Commit | Line | Data |
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252b5132 | 1 | /* vms.c -- Write out a VAX/VMS object file |
1a5447b8 | 2 | Copyright 1987, 1988, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2001 |
bf514e21 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | /* Written by David L. Kashtan */ | |
23 | /* Modified by Eric Youngdale to write VMS debug records for program | |
24 | variables */ | |
25 | ||
26 | /* Want all of obj-vms.h (as obj-format.h, via targ-env.h, via as.h). */ | |
27 | #define WANT_VMS_OBJ_DEFS | |
28 | ||
29 | #include "as.h" | |
30 | #include "config.h" | |
3882b010 | 31 | #include "safe-ctype.h" |
252b5132 RH |
32 | #include "subsegs.h" |
33 | #include "obstack.h" | |
34 | ||
bf514e21 | 35 | /* What we do if there is a goof. */ |
252b5132 RH |
36 | #define error as_fatal |
37 | ||
bf514e21 | 38 | #ifdef VMS /* These are of no use if we are cross assembling. */ |
252b5132 RH |
39 | #include <fab.h> /* Define File Access Block */ |
40 | #include <nam.h> /* Define NAM Block */ | |
41 | #include <xab.h> /* Define XAB - all different types*/ | |
42 | extern int sys$open(), sys$close(), sys$asctim(); | |
43 | #endif | |
44 | ||
45 | /* | |
46 | * Version string of the compiler that produced the code we are | |
47 | * assembling. (And this assembler, if we do not have compiler info.) | |
48 | */ | |
49 | char *compiler_version_string; | |
50 | ||
51 | extern int flag_hash_long_names; /* -+ */ | |
52 | extern int flag_one; /* -1; compatibility with gcc 1.x */ | |
53 | extern int flag_show_after_trunc; /* -H */ | |
54 | extern int flag_no_hash_mixed_case; /* -h NUM */ | |
55 | ||
56 | /* Flag that determines how we map names. This takes several values, and | |
57 | * is set with the -h switch. A value of zero implies names should be | |
58 | * upper case, and the presence of the -h switch inhibits the case hack. | |
59 | * No -h switch at all sets vms_name_mapping to 0, and allows case hacking. | |
60 | * A value of 2 (set with -h2) implies names should be | |
61 | * all lower case, with no case hack. A value of 3 (set with -h3) implies | |
62 | * that case should be preserved. */ | |
63 | ||
64 | /* If the -+ switch is given, then the hash is appended to any name that is | |
65 | * longer than 31 characters, regardless of the setting of the -h switch. | |
66 | */ | |
67 | ||
68 | char vms_name_mapping = 0; | |
69 | ||
70 | static symbolS *Entry_Point_Symbol = 0; /* Pointer to "_main" */ | |
71 | ||
72 | /* | |
73 | * We augment the "gas" symbol structure with this | |
74 | */ | |
75 | struct VMS_Symbol | |
76 | { | |
77 | struct VMS_Symbol *Next; | |
78 | symbolS *Symbol; | |
79 | int Size; | |
80 | int Psect_Index; | |
81 | int Psect_Offset; | |
82 | }; | |
83 | ||
84 | struct VMS_Symbol *VMS_Symbols = 0; | |
85 | struct VMS_Symbol *Ctors_Symbols = 0; | |
86 | struct VMS_Symbol *Dtors_Symbols = 0; | |
87 | ||
88 | /* We need this to keep track of the various input files, so that we can | |
89 | * give the debugger the correct source line. | |
90 | */ | |
91 | ||
92 | struct input_file | |
93 | { | |
94 | struct input_file *next; | |
95 | struct input_file *same_file_fpnt; | |
96 | int file_number; | |
97 | int max_line; | |
98 | int min_line; | |
99 | int offset; | |
100 | char flag; | |
101 | char *name; | |
102 | symbolS *spnt; | |
103 | }; | |
104 | ||
105 | static struct input_file *file_root = (struct input_file *) NULL; | |
106 | ||
252b5132 RH |
107 | /* |
108 | * Styles of PSECTS (program sections) that we generate; just shorthand | |
109 | * to avoid lists of section attributes. Used by VMS_Psect_Spec(). | |
110 | */ | |
111 | enum ps_type | |
112 | { | |
113 | ps_TEXT, ps_DATA, ps_COMMON, ps_CONST, ps_CTORS, ps_DTORS | |
114 | }; | |
115 | ||
116 | /* | |
117 | * This enum is used to keep track of the various types of variables that | |
118 | * may be present. | |
119 | */ | |
120 | ||
121 | enum advanced_type | |
122 | { | |
123 | BASIC, POINTER, ARRAY, ENUM, STRUCT, UNION, FUNCTION, VOID, ALIAS, UNKNOWN | |
124 | }; | |
125 | ||
126 | /* | |
127 | * This structure contains the information from the stabs directives, and the | |
128 | * information is filled in by VMS_typedef_parse. Everything that is needed | |
129 | * to generate the debugging record for a given symbol is present here. | |
130 | * This could be done more efficiently, using nested struct/unions, but for now | |
131 | * I am happy that it works. | |
132 | */ | |
133 | struct VMS_DBG_Symbol | |
134 | { | |
135 | struct VMS_DBG_Symbol *next; | |
136 | /* description of what this is */ | |
137 | enum advanced_type advanced; | |
138 | /* this record is for this type */ | |
139 | int dbx_type; | |
140 | /* For advanced types this is the type referred to. I.e., the type | |
141 | a pointer points to, or the type of object that makes up an | |
142 | array. */ | |
143 | int type2; | |
144 | /* Use this type when generating a variable def */ | |
145 | int VMS_type; | |
146 | /* used for arrays - this will be present for all */ | |
147 | int index_min; | |
148 | /* entries, but will be meaningless for non-arrays */ | |
149 | int index_max; | |
150 | /* Size in bytes of the data type. For an array, this is the size | |
151 | of one element in the array */ | |
152 | int data_size; | |
153 | /* Number of the structure/union/enum - used for ref */ | |
154 | int struc_numb; | |
155 | }; | |
156 | ||
157 | #define SYMTYPLST_SIZE (1<<4) /* 16; must be power of two */ | |
814f6641 | 158 | #define SYMTYP_HASH(x) ((unsigned) (x) & (SYMTYPLST_SIZE-1)) |
252b5132 RH |
159 | struct VMS_DBG_Symbol *VMS_Symbol_type_list[SYMTYPLST_SIZE]; |
160 | ||
161 | /* | |
162 | * We need this structure to keep track of forward references to | |
163 | * struct/union/enum that have not been defined yet. When they are ultimately | |
164 | * defined, then we can go back and generate the TIR commands to make a back | |
165 | * reference. | |
166 | */ | |
167 | ||
168 | struct forward_ref | |
169 | { | |
170 | struct forward_ref *next; | |
171 | int dbx_type; | |
172 | int struc_numb; | |
173 | char resolved; | |
174 | }; | |
175 | ||
176 | struct forward_ref *f_ref_root = (struct forward_ref *) NULL; | |
177 | ||
178 | /* | |
179 | * This routine is used to compare the names of certain types to various | |
180 | * fixed types that are known by the debugger. | |
181 | */ | |
182 | #define type_check(X) !strcmp (symbol_name, X) | |
183 | ||
184 | /* | |
185 | * This variable is used to keep track of the name of the symbol we are | |
186 | * working on while we are parsing the stabs directives. | |
187 | */ | |
188 | static const char *symbol_name; | |
189 | ||
190 | /* We use this counter to assign numbers to all of the structures, unions | |
191 | * and enums that we define. When we actually declare a variable to the | |
192 | * debugger, we can simply do it by number, rather than describing the | |
193 | * whole thing each time. | |
194 | */ | |
195 | ||
196 | static structure_count = 0; | |
197 | ||
198 | /* This variable is used to indicate that we are making the last attempt to | |
199 | parse the stabs, and that we should define as much as we can, and ignore | |
200 | the rest */ | |
201 | ||
202 | static int final_pass; | |
203 | ||
204 | /* This variable is used to keep track of the current structure number | |
205 | * for a given variable. If this is < 0, that means that the structure | |
206 | * has not yet been defined to the debugger. This is still cool, since | |
207 | * the VMS object language has ways of fixing things up after the fact, | |
208 | * so we just make a note of this, and generate fixups at the end. | |
209 | */ | |
210 | static int struct_number; | |
211 | ||
212 | /* This is used to distinguish between D_float and G_float for telling | |
213 | the debugger about doubles. gcc outputs the same .stabs regardless | |
214 | of whether -mg is used to select alternate doubles. */ | |
215 | ||
216 | static int vax_g_doubles = 0; | |
217 | ||
218 | /* Local symbol references (used to handle N_ABS symbols; gcc does not | |
219 | generate those, but they're possible with hand-coded assembler input) | |
220 | are always made relative to some particular environment. If the current | |
221 | input has any such symbols, then we expect this to get incremented | |
222 | exactly once and end up having all of them be in environment #0. */ | |
223 | ||
224 | static int Current_Environment = -1; | |
225 | ||
226 | /* Every object file must specify an module name, which is also used by | |
227 | traceback records. Set in Write_VMS_MHD_Records(). */ | |
228 | ||
229 | static char Module_Name[255+1]; | |
230 | ||
231 | /* | |
232 | * Variable descriptors are used tell the debugger the data types of certain | |
233 | * more complicated variables (basically anything involving a structure, | |
234 | * union, enum, array or pointer). Some non-pointer variables of the | |
235 | * basic types that the debugger knows about do not require a variable | |
236 | * descriptor. | |
237 | * | |
238 | * Since it is impossible to have a variable descriptor longer than 128 | |
239 | * bytes by virtue of the way that the VMS object language is set up, | |
240 | * it makes not sense to make the arrays any longer than this, or worrying | |
241 | * about dynamic sizing of the array. | |
242 | * | |
243 | * These are the arrays and counters that we use to build a variable | |
244 | * descriptor. | |
245 | */ | |
246 | ||
247 | #define MAX_DEBUG_RECORD 128 | |
248 | static char Local[MAX_DEBUG_RECORD]; /* buffer for variable descriptor */ | |
249 | static char Asuffix[MAX_DEBUG_RECORD]; /* buffer for array descriptor */ | |
250 | static int Lpnt; /* index into Local */ | |
251 | static int Apoint; /* index into Asuffix */ | |
252 | static char overflow; /* flag to indicate we have written too much*/ | |
253 | static int total_len; /* used to calculate the total length of variable | |
254 | descriptor plus array descriptor - used for len byte*/ | |
255 | ||
256 | /* Flag if we have told user about finding global constants in the text | |
bf514e21 | 257 | section. */ |
252b5132 RH |
258 | static int gave_compiler_message = 0; |
259 | ||
252b5132 RH |
260 | /* |
261 | * Global data (Object records limited to 512 bytes by VAX-11 "C" runtime) | |
262 | */ | |
263 | static int VMS_Object_File_FD; /* File Descriptor for object file */ | |
264 | static char Object_Record_Buffer[512]; /* Buffer for object file records */ | |
265 | static int Object_Record_Offset;/* Offset to end of data */ | |
266 | static int Current_Object_Record_Type; /* Type of record in above */ | |
267 | ||
268 | /* | |
269 | * Macros for moving data around. Must work on big-endian systems. | |
270 | */ | |
271 | #ifdef VMS /* These are more efficient for VMS->VMS systems */ | |
814f6641 KH |
272 | #define COPY_LONG(dest,val) ( *(long *) (dest) = (val) ) |
273 | #define COPY_SHORT(dest,val) ( *(short *) (dest) = (val) ) | |
252b5132 RH |
274 | #else |
275 | #define COPY_LONG(dest,val) md_number_to_chars ((dest), (val), 4) | |
276 | #define COPY_SHORT(dest,val) md_number_to_chars ((dest), (val), 2) | |
277 | #endif | |
278 | /* | |
279 | * Macros for placing data into the object record buffer. | |
280 | */ | |
281 | #define PUT_LONG(val) \ | |
282 | ( COPY_LONG (&Object_Record_Buffer[Object_Record_Offset], (val)), \ | |
283 | Object_Record_Offset += 4 ) | |
284 | ||
285 | #define PUT_SHORT(val) \ | |
286 | ( COPY_SHORT (&Object_Record_Buffer[Object_Record_Offset], (val)), \ | |
287 | Object_Record_Offset += 2 ) | |
288 | ||
289 | #define PUT_CHAR(val) ( Object_Record_Buffer[Object_Record_Offset++] = (val) ) | |
290 | ||
291 | #define PUT_COUNTED_STRING(cp) do { \ | |
292 | register const char *p = (cp); \ | |
293 | PUT_CHAR ((char) strlen (p)); \ | |
294 | while (*p) PUT_CHAR (*p++); } while (0) | |
295 | ||
296 | /* | |
297 | * Macro for determining if a Name has psect attributes attached | |
298 | * to it. | |
299 | */ | |
300 | #define PSECT_ATTRIBUTES_STRING "$$PsectAttributes_" | |
301 | #define PSECT_ATTRIBUTES_STRING_LENGTH 18 | |
302 | ||
303 | #define HAS_PSECT_ATTRIBUTES(Name) \ | |
304 | (strncmp ((*Name == '_' ? Name + 1 : Name), \ | |
305 | PSECT_ATTRIBUTES_STRING, \ | |
306 | PSECT_ATTRIBUTES_STRING_LENGTH) == 0) | |
307 | \f | |
308 | ||
309 | /* in: segT out: N_TYPE bits */ | |
310 | const short seg_N_TYPE[] = | |
311 | { | |
312 | N_ABS, | |
313 | N_TEXT, | |
314 | N_DATA, | |
315 | N_BSS, | |
316 | N_UNDF, /* unknown */ | |
317 | N_UNDF, /* error */ | |
318 | N_UNDF, /* expression */ | |
319 | N_UNDF, /* debug */ | |
320 | N_UNDF, /* ntv */ | |
321 | N_UNDF, /* ptv */ | |
322 | N_REGISTER, /* register */ | |
323 | }; | |
324 | ||
325 | const segT N_TYPE_seg[N_TYPE + 2] = | |
326 | { /* N_TYPE == 0x1E = 32-2 */ | |
327 | SEG_UNKNOWN, /* N_UNDF == 0 */ | |
328 | SEG_GOOF, | |
329 | SEG_ABSOLUTE, /* N_ABS == 2 */ | |
330 | SEG_GOOF, | |
331 | SEG_TEXT, /* N_TEXT == 4 */ | |
332 | SEG_GOOF, | |
333 | SEG_DATA, /* N_DATA == 6 */ | |
334 | SEG_GOOF, | |
335 | SEG_BSS, /* N_BSS == 8 */ | |
336 | SEG_GOOF, | |
337 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
338 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
339 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
340 | SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */ | |
341 | SEG_GOOF, | |
342 | }; | |
343 | \f | |
344 | ||
345 | /* Local support routines which return a value. */ | |
346 | ||
347 | static struct input_file *find_file PARAMS ((symbolS *)); | |
348 | static struct VMS_DBG_Symbol *find_symbol PARAMS ((int)); | |
349 | static symbolS *Define_Routine PARAMS ((symbolS *,int,symbolS *,int)); | |
350 | ||
351 | static char *cvt_integer PARAMS ((char *,int *)); | |
352 | static char *fix_name PARAMS ((char *)); | |
353 | static char *get_struct_name PARAMS ((char *)); | |
354 | ||
355 | static offsetT VMS_Initialized_Data_Size PARAMS ((symbolS *,unsigned)); | |
356 | ||
357 | static int VMS_TBT_Source_File PARAMS ((char *,int)); | |
358 | static int gen1 PARAMS ((struct VMS_DBG_Symbol *,int)); | |
359 | static int forward_reference PARAMS ((char *)); | |
360 | static int final_forward_reference PARAMS ((struct VMS_DBG_Symbol *)); | |
361 | static int VMS_typedef_parse PARAMS ((char *)); | |
362 | static int hash_string PARAMS ((const char *)); | |
363 | static int VMS_Psect_Spec PARAMS ((const char *,int,enum ps_type, | |
364 | struct VMS_Symbol *)); | |
365 | ||
366 | /* Local support routines which don't directly return any value. */ | |
367 | ||
368 | static void s_const PARAMS ((int)); | |
369 | static void Create_VMS_Object_File PARAMS ((void)); | |
370 | static void Flush_VMS_Object_Record_Buffer PARAMS ((void)); | |
371 | static void Set_VMS_Object_File_Record PARAMS ((int)); | |
372 | static void Close_VMS_Object_File PARAMS ((void)); | |
373 | static void vms_tir_stack_psect PARAMS ((int,int,int)); | |
374 | static void VMS_Store_Immediate_Data PARAMS ((const char *,int,int)); | |
375 | static void VMS_Set_Data PARAMS ((int,int,int,int)); | |
376 | static void VMS_Store_Struct PARAMS ((int)); | |
377 | static void VMS_Def_Struct PARAMS ((int)); | |
378 | static void VMS_Set_Struct PARAMS ((int)); | |
379 | static void VMS_TBT_Module_Begin PARAMS ((void)); | |
380 | static void VMS_TBT_Module_End PARAMS ((void)); | |
381 | static void VMS_TBT_Routine_Begin PARAMS ((symbolS *,int)); | |
382 | static void VMS_TBT_Routine_End PARAMS ((int,symbolS *)); | |
383 | static void VMS_TBT_Block_Begin PARAMS ((symbolS *,int,char *)); | |
384 | static void VMS_TBT_Block_End PARAMS ((valueT)); | |
385 | static void VMS_TBT_Line_PC_Correlation PARAMS ((int,int,int,int)); | |
386 | static void VMS_TBT_Source_Lines PARAMS ((int,int,int)); | |
387 | static void fpush PARAMS ((int,int)); | |
388 | static void rpush PARAMS ((int,int)); | |
389 | static void array_suffix PARAMS ((struct VMS_DBG_Symbol *)); | |
390 | static void new_forward_ref PARAMS ((int)); | |
391 | static void generate_suffix PARAMS ((struct VMS_DBG_Symbol *,int)); | |
392 | static void bitfield_suffix PARAMS ((struct VMS_DBG_Symbol *,int)); | |
393 | static void setup_basic_type PARAMS ((struct VMS_DBG_Symbol *)); | |
394 | static void VMS_DBG_record PARAMS ((struct VMS_DBG_Symbol *,int,int,char *)); | |
395 | static void VMS_local_stab_Parse PARAMS ((symbolS *)); | |
396 | static void VMS_stab_parse PARAMS ((symbolS *,int,int,int,int)); | |
397 | static void VMS_GSYM_Parse PARAMS ((symbolS *,int)); | |
398 | static void VMS_LCSYM_Parse PARAMS ((symbolS *,int)); | |
399 | static void VMS_STSYM_Parse PARAMS ((symbolS *,int)); | |
400 | static void VMS_RSYM_Parse PARAMS ((symbolS *,symbolS *,int)); | |
401 | static void VMS_LSYM_Parse PARAMS ((void)); | |
402 | static void Define_Local_Symbols PARAMS ((symbolS *,symbolS *,symbolS *,int)); | |
403 | static void Write_VMS_MHD_Records PARAMS ((void)); | |
404 | static void Write_VMS_EOM_Record PARAMS ((int,valueT)); | |
405 | static void VMS_Case_Hack_Symbol PARAMS ((const char *,char *)); | |
406 | static void VMS_Modify_Psect_Attributes PARAMS ((const char *,int *)); | |
407 | static void VMS_Global_Symbol_Spec PARAMS ((const char *,int,int,int)); | |
408 | static void VMS_Local_Environment_Setup PARAMS ((const char *)); | |
409 | static void VMS_Emit_Globalvalues PARAMS ((unsigned,unsigned,char *)); | |
410 | static void VMS_Procedure_Entry_Pt PARAMS ((char *,int,int,int)); | |
411 | static void VMS_Set_Psect PARAMS ((int,int,int)); | |
412 | static void VMS_Store_Repeated_Data PARAMS ((int,char *,int,int)); | |
413 | static void VMS_Store_PIC_Symbol_Reference PARAMS ((symbolS *,int, | |
414 | int,int,int,int)); | |
415 | static void VMS_Fix_Indirect_Reference PARAMS ((int,int,fragS *,fragS *)); | |
416 | ||
417 | /* Support code which used to be inline within vms_write_object_file. */ | |
418 | static void vms_fixup_text_section PARAMS ((unsigned,struct frag *,struct frag *)); | |
419 | static void synthesize_data_segment PARAMS ((unsigned,unsigned,struct frag *)); | |
420 | static void vms_fixup_data_section PARAMS ((unsigned,unsigned)); | |
421 | static void global_symbol_directory PARAMS ((unsigned,unsigned)); | |
422 | static void local_symbols_DST PARAMS ((symbolS *,symbolS *)); | |
423 | static void vms_build_DST PARAMS ((unsigned)); | |
424 | static void vms_fixup_xtors_section PARAMS ((struct VMS_Symbol *, int)); | |
425 | \f | |
426 | ||
427 | /* The following code defines the special types of pseudo-ops that we | |
428 | use with VMS. */ | |
429 | ||
430 | unsigned char const_flag = IN_DEFAULT_SECTION; | |
431 | ||
432 | static void | |
433 | s_const (arg) | |
434 | int arg; /* 3rd field from obj_pseudo_table[]; not needed here */ | |
435 | { | |
436 | /* Since we don't need `arg', use it as our scratch variable so that | |
437 | we won't get any "not used" warnings about it. */ | |
438 | arg = get_absolute_expression (); | |
439 | subseg_set (SEG_DATA, (subsegT) arg); | |
440 | const_flag = 1; | |
441 | demand_empty_rest_of_line (); | |
442 | } | |
443 | ||
444 | const pseudo_typeS obj_pseudo_table[] = | |
445 | { | |
446 | {"const", s_const, 0}, | |
447 | {0, 0, 0}, | |
448 | }; /* obj_pseudo_table */ | |
449 | ||
252b5132 RH |
450 | /* Routine to perform RESOLVE_SYMBOL_REDEFINITION(). */ |
451 | ||
452 | int | |
453 | vms_resolve_symbol_redef (sym) | |
454 | symbolS *sym; | |
455 | { | |
456 | /* | |
457 | * If the new symbol is .comm AND it has a size of zero, | |
458 | * we ignore it (i.e. the old symbol overrides it) | |
459 | */ | |
460 | if (SEGMENT_TO_SYMBOL_TYPE ((int) now_seg) == (N_UNDF | N_EXT) | |
461 | && frag_now_fix () == 0) | |
462 | { | |
463 | as_warn (_("compiler emitted zero-size common symbol `%s' already defined"), | |
464 | S_GET_NAME (sym)); | |
465 | return 1; | |
466 | } | |
467 | /* | |
468 | * If the old symbol is .comm and it has a size of zero, | |
469 | * we override it with the new symbol value. | |
470 | */ | |
471 | if (S_IS_EXTERNAL (sym) && S_IS_DEFINED (sym) && S_GET_VALUE (sym) == 0) | |
472 | { | |
473 | as_warn (_("compiler redefined zero-size common symbol `%s'"), | |
474 | S_GET_NAME (sym)); | |
475 | sym->sy_frag = frag_now; | |
476 | S_SET_OTHER (sym, const_flag); | |
477 | S_SET_VALUE (sym, frag_now_fix ()); | |
478 | /* Keep N_EXT bit. */ | |
479 | sym->sy_symbol.n_type |= SEGMENT_TO_SYMBOL_TYPE ((int) now_seg); | |
480 | return 1; | |
481 | } | |
482 | ||
483 | return 0; | |
484 | } | |
485 | ||
252b5132 RH |
486 | /* `tc_frob_label' handler for colon(symbols.c), used to examine the |
487 | dummy label(s) gcc inserts at the beginning of each file it generates. | |
488 | gcc 1.x put "gcc_compiled."; gcc 2.x (as of 2.7) puts "gcc2_compiled." | |
489 | and "__gnu_language_<name>" and possibly "__vax_<type>_doubles". */ | |
490 | ||
491 | void | |
492 | vms_check_for_special_label (symbolP) | |
493 | symbolS *symbolP; | |
494 | { | |
495 | /* Special labels only occur prior to explicit section directives. */ | |
496 | if ((const_flag & IN_DEFAULT_SECTION) != 0) | |
497 | { | |
498 | char *sym_name = S_GET_NAME (symbolP); | |
499 | ||
500 | if (*sym_name == '_') | |
501 | ++sym_name; | |
502 | ||
503 | if (!strcmp (sym_name, "__vax_g_doubles")) | |
504 | vax_g_doubles = 1; | |
505 | #if 0 /* not necessary */ | |
506 | else if (!strcmp (sym_name, "__vax_d_doubles")) | |
507 | vax_g_doubles = 0; | |
508 | #endif | |
509 | #if 0 /* these are potential alternatives to tc-vax.c's md_parse_options() */ | |
510 | else if (!strcmp (sym_name, "gcc_compiled.")) | |
511 | flag_one = 1; | |
512 | else if (!strcmp (sym_name, "__gnu_language_cplusplus")) | |
513 | flag_hash_long_names = 1; | |
514 | #endif | |
515 | } | |
516 | return; | |
517 | } | |
518 | ||
252b5132 RH |
519 | void |
520 | obj_read_begin_hook () | |
521 | { | |
522 | return; | |
523 | } | |
524 | ||
252b5132 RH |
525 | void |
526 | obj_crawl_symbol_chain (headers) | |
527 | object_headers *headers; | |
528 | { | |
529 | symbolS *symbolP; | |
530 | symbolS **symbolPP; | |
531 | int symbol_number = 0; | |
532 | ||
bf514e21 | 533 | symbolPP = &symbol_rootP; /* -> last symbol chain link. */ |
252b5132 RH |
534 | while ((symbolP = *symbolPP) != NULL) |
535 | { | |
6386f3a7 | 536 | resolve_symbol_value (symbolP); |
252b5132 RH |
537 | |
538 | /* OK, here is how we decide which symbols go out into the | |
539 | brave new symtab. Symbols that do are: | |
540 | ||
541 | * symbols with no name (stabd's?) | |
542 | * symbols with debug info in their N_TYPE | |
543 | * symbols with \1 as their 3rd character (numeric labels) | |
544 | * "local labels" needed for PIC fixups | |
545 | ||
546 | Symbols that don't are: | |
547 | * symbols that are registers | |
548 | ||
549 | All other symbols are output. We complain if a deleted | |
550 | symbol was marked external. */ | |
551 | ||
552 | if (!S_IS_REGISTER (symbolP)) | |
553 | { | |
554 | symbolP->sy_number = symbol_number++; | |
555 | symbolP->sy_name_offset = 0; | |
606ab118 | 556 | symbolPP = &symbolP->sy_next; |
252b5132 RH |
557 | } |
558 | else | |
559 | { | |
560 | if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP)) | |
561 | { | |
562 | as_bad (_("Local symbol %s never defined"), S_GET_NAME (symbolP)); | |
bf514e21 | 563 | } /* oops. */ |
252b5132 RH |
564 | |
565 | /* Unhook it from the chain. */ | |
566 | *symbolPP = symbol_next (symbolP); | |
567 | } /* if this symbol should be in the output */ | |
568 | ||
569 | } /* for each symbol */ | |
570 | ||
571 | H_SET_STRING_SIZE (headers, string_byte_count); | |
572 | H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number); | |
573 | } /* obj_crawl_symbol_chain() */ | |
574 | \f | |
575 | ||
576 | /****** VMS OBJECT FILE HACKING ROUTINES *******/ | |
577 | ||
252b5132 RH |
578 | /* Create the VMS object file. */ |
579 | ||
580 | static void | |
581 | Create_VMS_Object_File () | |
582 | { | |
583 | #if defined(eunice) || !defined(VMS) | |
584 | VMS_Object_File_FD = creat (out_file_name, 0777, "var"); | |
585 | #else /* eunice */ | |
586 | VMS_Object_File_FD = creat (out_file_name, 0, "rfm=var", | |
587 | "ctx=bin", "mbc=16", "deq=64", "fop=tef", | |
588 | "shr=nil"); | |
589 | #endif /* eunice */ | |
590 | /* Deal with errors. */ | |
591 | if (VMS_Object_File_FD < 0) | |
592 | as_fatal (_("Couldn't create VMS object file \"%s\""), out_file_name); | |
593 | /* Initialize object file hacking variables. */ | |
594 | Object_Record_Offset = 0; | |
595 | Current_Object_Record_Type = -1; | |
596 | } | |
597 | ||
252b5132 RH |
598 | /* Flush the object record buffer to the object file. */ |
599 | ||
600 | static void | |
601 | Flush_VMS_Object_Record_Buffer () | |
602 | { | |
603 | /* If the buffer is empty, there's nothing to do. */ | |
604 | if (Object_Record_Offset == 0) | |
605 | return; | |
606 | ||
bf514e21 | 607 | #ifndef VMS /* For cross-assembly purposes. */ |
252b5132 RH |
608 | { |
609 | char RecLen[2]; | |
610 | ||
611 | /* "Variable-length record" files have a two byte length field | |
612 | prepended to each record. It's normally out-of-band, and native | |
613 | VMS output will insert it automatically for this type of file. | |
614 | When cross-assembling, we must write it explicitly. */ | |
615 | md_number_to_chars (RecLen, Object_Record_Offset, 2); | |
616 | if (write (VMS_Object_File_FD, RecLen, 2) != 2) | |
617 | error (_("I/O error writing VMS object file (length prefix)")); | |
618 | /* We also need to force the actual record to be an even number of | |
619 | bytes. For native output, that's automatic; when cross-assembling, | |
620 | pad with a NUL byte if length is odd. Do so _after_ writing the | |
621 | pre-padded length. Since our buffer is defined with even size, | |
622 | an odd offset implies that it has some room left. */ | |
623 | if ((Object_Record_Offset & 1) != 0) | |
624 | Object_Record_Buffer[Object_Record_Offset++] = '\0'; | |
625 | } | |
626 | #endif /* not VMS */ | |
627 | ||
628 | /* Write the data to the file. */ | |
629 | if (write (VMS_Object_File_FD, Object_Record_Buffer, Object_Record_Offset) | |
630 | != Object_Record_Offset) | |
631 | error (_("I/O error writing VMS object file")); | |
632 | ||
633 | /* The buffer is now empty. */ | |
634 | Object_Record_Offset = 0; | |
635 | } | |
636 | ||
252b5132 RH |
637 | /* Declare a particular type of object file record. */ |
638 | ||
639 | static void | |
640 | Set_VMS_Object_File_Record (Type) | |
641 | int Type; | |
642 | { | |
643 | /* If the type matches, we are done. */ | |
644 | if (Type == Current_Object_Record_Type) | |
645 | return; | |
646 | /* Otherwise: flush the buffer. */ | |
647 | Flush_VMS_Object_Record_Buffer (); | |
648 | /* Remember the new type. */ | |
649 | Current_Object_Record_Type = Type; | |
650 | } | |
651 | ||
252b5132 RH |
652 | /* Close the VMS Object file. */ |
653 | ||
654 | static void | |
655 | Close_VMS_Object_File () | |
656 | { | |
657 | /* Flush (should never be necessary) and reset saved record-type context. */ | |
658 | Set_VMS_Object_File_Record (-1); | |
659 | ||
bf514e21 | 660 | #ifndef VMS /* For cross-assembly purposes. */ |
252b5132 RH |
661 | { |
662 | char RecLen[2]; | |
663 | int minus_one = -1; | |
664 | ||
665 | /* Write a 2 byte record-length field of -1 into the file, which | |
666 | means end-of-block when read, hence end-of-file when occurring | |
667 | in the file's last block. It is only needed for variable-length | |
668 | record files transferred to VMS as fixed-length record files | |
669 | (typical for binary FTP; NFS shouldn't need it, but it won't hurt). */ | |
670 | md_number_to_chars (RecLen, minus_one, 2); | |
671 | write (VMS_Object_File_FD, RecLen, 2); | |
672 | } | |
673 | #else | |
674 | /* When written on a VMS system, the file header (cf inode) will record | |
675 | the actual end-of-file position and no inline marker is needed. */ | |
676 | #endif | |
677 | ||
678 | close (VMS_Object_File_FD); | |
679 | } | |
680 | \f | |
681 | ||
682 | /****** Text Information and Relocation routines ******/ | |
683 | ||
252b5132 RH |
684 | /* Stack Psect base followed by signed, varying-sized offset. |
685 | Common to several object records. */ | |
686 | ||
687 | static void | |
688 | vms_tir_stack_psect (Psect_Index, Offset, Force) | |
689 | int Psect_Index; | |
690 | int Offset; | |
691 | int Force; | |
692 | { | |
693 | int psect_width, offset_width; | |
694 | ||
695 | psect_width = ((unsigned) Psect_Index > 255) ? 2 : 1; | |
696 | offset_width = (Force || Offset > 32767 || Offset < -32768) ? 4 | |
697 | : (Offset > 127 || Offset < -128) ? 2 : 1; | |
698 | #define Sta_P(p,o) (((o)<<1) | ((p)-1)) | |
699 | /* byte or word psect; byte, word, or longword offset */ | |
700 | switch (Sta_P(psect_width,offset_width)) | |
701 | { | |
702 | case Sta_P(1,1): PUT_CHAR (TIR_S_C_STA_PB); | |
814f6641 | 703 | PUT_CHAR ((char) (unsigned char) Psect_Index); |
252b5132 RH |
704 | PUT_CHAR ((char) Offset); |
705 | break; | |
706 | case Sta_P(1,2): PUT_CHAR (TIR_S_C_STA_PW); | |
814f6641 | 707 | PUT_CHAR ((char) (unsigned char) Psect_Index); |
252b5132 RH |
708 | PUT_SHORT (Offset); |
709 | break; | |
710 | case Sta_P(1,4): PUT_CHAR (TIR_S_C_STA_PL); | |
814f6641 | 711 | PUT_CHAR ((char) (unsigned char) Psect_Index); |
252b5132 RH |
712 | PUT_LONG (Offset); |
713 | break; | |
714 | case Sta_P(2,1): PUT_CHAR (TIR_S_C_STA_WPB); | |
715 | PUT_SHORT (Psect_Index); | |
716 | PUT_CHAR ((char) Offset); | |
717 | break; | |
718 | case Sta_P(2,2): PUT_CHAR (TIR_S_C_STA_WPW); | |
719 | PUT_SHORT (Psect_Index); | |
720 | PUT_SHORT (Offset); | |
721 | break; | |
722 | case Sta_P(2,4): PUT_CHAR (TIR_S_C_STA_WPL); | |
723 | PUT_SHORT (Psect_Index); | |
724 | PUT_LONG (Offset); | |
725 | break; | |
726 | } | |
727 | #undef Sta_P | |
728 | } | |
729 | ||
252b5132 RH |
730 | /* Store immediate data in current Psect. */ |
731 | ||
732 | static void | |
733 | VMS_Store_Immediate_Data (Pointer, Size, Record_Type) | |
734 | const char *Pointer; | |
735 | int Size; | |
736 | int Record_Type; | |
737 | { | |
738 | register int i; | |
739 | ||
740 | Set_VMS_Object_File_Record (Record_Type); | |
741 | /* We can only store as most 128 bytes at a time due to the way that | |
742 | TIR commands are encoded. */ | |
743 | while (Size > 0) | |
744 | { | |
745 | i = (Size > 128) ? 128 : Size; | |
746 | Size -= i; | |
747 | /* If we cannot accommodate this record, flush the buffer. */ | |
748 | if ((Object_Record_Offset + i + 1) >= sizeof Object_Record_Buffer) | |
749 | Flush_VMS_Object_Record_Buffer (); | |
750 | /* If the buffer is empty we must insert record type. */ | |
751 | if (Object_Record_Offset == 0) | |
752 | PUT_CHAR (Record_Type); | |
753 | /* Store the count. The Store Immediate TIR command is implied by | |
754 | a negative command byte, and the length of the immediate data | |
755 | is abs(command_byte). So, we write the negated length value. */ | |
756 | PUT_CHAR ((char) (-i & 0xff)); | |
757 | /* Now store the data. */ | |
758 | while (--i >= 0) | |
759 | PUT_CHAR (*Pointer++); | |
760 | } | |
761 | /* Flush the buffer if it is more than 75% full. */ | |
762 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
763 | Flush_VMS_Object_Record_Buffer (); | |
764 | } | |
765 | ||
252b5132 RH |
766 | /* Make a data reference. */ |
767 | ||
768 | static void | |
769 | VMS_Set_Data (Psect_Index, Offset, Record_Type, Force) | |
770 | int Psect_Index; | |
771 | int Offset; | |
772 | int Record_Type; | |
773 | int Force; | |
774 | { | |
775 | Set_VMS_Object_File_Record (Record_Type); | |
776 | /* If the buffer is empty we must insert the record type. */ | |
777 | if (Object_Record_Offset == 0) | |
778 | PUT_CHAR (Record_Type); | |
779 | /* Stack the Psect base with its offset. */ | |
780 | vms_tir_stack_psect (Psect_Index, Offset, Force); | |
781 | /* Set relocation base. */ | |
782 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
783 | /* Flush the buffer if it is more than 75% full. */ | |
784 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
785 | Flush_VMS_Object_Record_Buffer (); | |
786 | } | |
787 | ||
252b5132 RH |
788 | /* Make a debugger reference to a struct, union or enum. */ |
789 | ||
790 | static void | |
791 | VMS_Store_Struct (Struct_Index) | |
792 | int Struct_Index; | |
793 | { | |
794 | /* We are writing a debug record. */ | |
795 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
796 | /* If the buffer is empty we must insert the record type. */ | |
797 | if (Object_Record_Offset == 0) | |
798 | PUT_CHAR (OBJ_S_C_DBG); | |
799 | PUT_CHAR (TIR_S_C_STA_UW); | |
800 | PUT_SHORT (Struct_Index); | |
801 | PUT_CHAR (TIR_S_C_CTL_STKDL); | |
802 | PUT_CHAR (TIR_S_C_STO_L); | |
803 | /* Flush the buffer if it is more than 75% full. */ | |
804 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
805 | Flush_VMS_Object_Record_Buffer (); | |
806 | } | |
807 | ||
252b5132 RH |
808 | /* Make a debugger reference to partially define a struct, union or enum. */ |
809 | ||
810 | static void | |
811 | VMS_Def_Struct (Struct_Index) | |
812 | int Struct_Index; | |
813 | { | |
814 | /* We are writing a debug record. */ | |
815 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
816 | /* If the buffer is empty we must insert the record type. */ | |
817 | if (Object_Record_Offset == 0) | |
818 | PUT_CHAR (OBJ_S_C_DBG); | |
819 | PUT_CHAR (TIR_S_C_STA_UW); | |
820 | PUT_SHORT (Struct_Index); | |
821 | PUT_CHAR (TIR_S_C_CTL_DFLOC); | |
822 | /* Flush the buffer if it is more than 75% full. */ | |
823 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
824 | Flush_VMS_Object_Record_Buffer (); | |
825 | } | |
826 | ||
827 | static void | |
828 | VMS_Set_Struct (Struct_Index) | |
829 | int Struct_Index; | |
830 | { /* see previous functions for comments */ | |
831 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
832 | if (Object_Record_Offset == 0) | |
833 | PUT_CHAR (OBJ_S_C_DBG); | |
834 | PUT_CHAR (TIR_S_C_STA_UW); | |
835 | PUT_SHORT (Struct_Index); | |
836 | PUT_CHAR (TIR_S_C_CTL_STLOC); | |
837 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
838 | Flush_VMS_Object_Record_Buffer (); | |
839 | } | |
840 | \f | |
841 | ||
842 | /****** Traceback Information routines ******/ | |
843 | ||
252b5132 RH |
844 | /* Write the Traceback Module Begin record. */ |
845 | ||
846 | static void | |
847 | VMS_TBT_Module_Begin () | |
848 | { | |
849 | register char *cp, *cp1; | |
850 | int Size; | |
851 | char Local[256]; | |
852 | ||
853 | /* Arrange to store the data locally (leave room for size byte). */ | |
854 | cp = &Local[1]; | |
855 | /* Begin module. */ | |
856 | *cp++ = DST_S_C_MODBEG; | |
857 | *cp++ = 0; /* flags; not used */ | |
858 | /* | |
859 | * Language type == "C" | |
860 | * | |
861 | * (FIXME: this should be based on the input...) | |
862 | */ | |
863 | COPY_LONG (cp, DST_S_C_C); | |
864 | cp += 4; | |
865 | /* Store the module name. */ | |
866 | *cp++ = (char) strlen (Module_Name); | |
867 | cp1 = Module_Name; | |
868 | while (*cp1) | |
869 | *cp++ = *cp1++; | |
870 | /* Now we can store the record size. */ | |
871 | Size = (cp - Local); | |
872 | Local[0] = Size - 1; | |
873 | /* Put it into the object record. */ | |
874 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); | |
875 | } | |
876 | ||
252b5132 RH |
877 | /* Write the Traceback Module End record. */ |
878 | ||
879 | static void | |
880 | VMS_TBT_Module_End () | |
881 | { | |
882 | char Local[2]; | |
883 | ||
884 | /* End module. */ | |
885 | Local[0] = 1; | |
886 | Local[1] = DST_S_C_MODEND; | |
887 | /* Put it into the object record. */ | |
888 | VMS_Store_Immediate_Data (Local, 2, OBJ_S_C_TBT); | |
889 | } | |
890 | ||
252b5132 RH |
891 | /* Write a Traceback Routine Begin record. */ |
892 | ||
893 | static void | |
894 | VMS_TBT_Routine_Begin (symbolP, Psect) | |
895 | symbolS *symbolP; | |
896 | int Psect; | |
897 | { | |
898 | register char *cp, *cp1; | |
899 | char *Name; | |
900 | int Offset; | |
901 | int Size; | |
902 | char Local[512]; | |
903 | ||
904 | /* Strip the leading "_" from the name. */ | |
905 | Name = S_GET_NAME (symbolP); | |
906 | if (*Name == '_') | |
907 | Name++; | |
908 | /* Get the text psect offset. */ | |
909 | Offset = S_GET_VALUE (symbolP); | |
910 | /* Set the record size. */ | |
911 | Size = 1 + 1 + 4 + 1 + strlen (Name); | |
912 | Local[0] = Size; | |
913 | /* DST type "routine begin". */ | |
914 | Local[1] = DST_S_C_RTNBEG; | |
915 | /* Uses CallS/CallG. */ | |
916 | Local[2] = 0; | |
917 | /* Store the data so far. */ | |
918 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); | |
919 | /* Make sure we are still generating a OBJ_S_C_TBT record. */ | |
920 | if (Object_Record_Offset == 0) | |
921 | PUT_CHAR (OBJ_S_C_TBT); | |
922 | /* Stack the address. */ | |
923 | vms_tir_stack_psect (Psect, Offset, 0); | |
924 | /* Store the data reference. */ | |
925 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
926 | /* Store the counted string as data. */ | |
927 | cp = Local; | |
928 | cp1 = Name; | |
929 | Size = strlen (cp1) + 1; | |
930 | *cp++ = Size - 1; | |
931 | while (*cp1) | |
932 | *cp++ = *cp1++; | |
933 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); | |
934 | } | |
935 | ||
252b5132 RH |
936 | /* Write a Traceback Routine End record. |
937 | ||
938 | We *must* search the symbol table to find the next routine, since the | |
939 | assember has a way of reassembling the symbol table OUT OF ORDER Thus | |
940 | the next routine in the symbol list is not necessarily the next one in | |
941 | memory. For debugging to work correctly we must know the size of the | |
942 | routine. */ | |
943 | ||
944 | static void | |
945 | VMS_TBT_Routine_End (Max_Size, sp) | |
946 | int Max_Size; | |
947 | symbolS *sp; | |
948 | { | |
949 | symbolS *symbolP; | |
950 | int Size = 0x7fffffff; | |
951 | char Local[16]; | |
952 | valueT sym_value, sp_value = S_GET_VALUE (sp); | |
953 | ||
954 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
955 | { | |
956 | if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) | |
957 | { | |
958 | if (*S_GET_NAME (symbolP) == 'L') | |
959 | continue; | |
960 | sym_value = S_GET_VALUE (symbolP); | |
961 | if (sym_value > sp_value && sym_value < Size) | |
962 | Size = sym_value; | |
963 | ||
964 | /* | |
965 | * Dummy labels like "gcc_compiled." should no longer reach here. | |
966 | */ | |
967 | #if 0 | |
968 | else | |
969 | /* check if gcc_compiled. has size of zero */ | |
970 | if (sym_value == sp_value && | |
971 | sp != symbolP && | |
972 | (!strcmp (S_GET_NAME (sp), "gcc_compiled.") || | |
973 | !strcmp (S_GET_NAME (sp), "gcc2_compiled."))) | |
974 | Size = sym_value; | |
975 | #endif | |
976 | } | |
977 | } | |
978 | if (Size == 0x7fffffff) | |
979 | Size = Max_Size; | |
980 | Size -= sp_value; /* and get the size of the routine */ | |
981 | /* Record Size. */ | |
982 | Local[0] = 6; | |
983 | /* DST type is "routine end". */ | |
984 | Local[1] = DST_S_C_RTNEND; | |
985 | Local[2] = 0; /* unused */ | |
986 | /* Size of routine. */ | |
987 | COPY_LONG (&Local[3], Size); | |
988 | /* Store the record. */ | |
989 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); | |
990 | } | |
991 | ||
252b5132 RH |
992 | /* Write a Traceback Block Begin record. */ |
993 | ||
994 | static void | |
995 | VMS_TBT_Block_Begin (symbolP, Psect, Name) | |
996 | symbolS *symbolP; | |
997 | int Psect; | |
998 | char *Name; | |
999 | { | |
1000 | register char *cp, *cp1; | |
1001 | int Offset; | |
1002 | int Size; | |
1003 | char Local[512]; | |
1004 | ||
1005 | /* Set the record size. */ | |
1006 | Size = 1 + 1 + 4 + 1 + strlen (Name); | |
1007 | Local[0] = Size; | |
1008 | /* DST type is "begin block"; we simulate with a phony routine. */ | |
1009 | Local[1] = DST_S_C_BLKBEG; | |
1010 | /* Uses CallS/CallG. */ | |
1011 | Local[2] = 0; | |
1012 | /* Store the data so far. */ | |
1013 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_DBG); | |
1014 | /* Make sure we are still generating a debug record. */ | |
1015 | if (Object_Record_Offset == 0) | |
1016 | PUT_CHAR (OBJ_S_C_DBG); | |
1017 | /* Now get the symbol address. */ | |
1018 | PUT_CHAR (TIR_S_C_STA_WPL); | |
1019 | PUT_SHORT (Psect); | |
1020 | /* Get the text psect offset. */ | |
1021 | Offset = S_GET_VALUE (symbolP); | |
1022 | PUT_LONG (Offset); | |
1023 | /* Store the data reference. */ | |
1024 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
1025 | /* Store the counted string as data. */ | |
1026 | cp = Local; | |
1027 | cp1 = Name; | |
1028 | Size = strlen (cp1) + 1; | |
1029 | *cp++ = Size - 1; | |
1030 | while (*cp1) | |
1031 | *cp++ = *cp1++; | |
1032 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_DBG); | |
1033 | } | |
1034 | ||
252b5132 RH |
1035 | /* Write a Traceback Block End record. */ |
1036 | ||
1037 | static void | |
1038 | VMS_TBT_Block_End (Size) | |
1039 | valueT Size; | |
1040 | { | |
1041 | char Local[16]; | |
1042 | ||
1043 | Local[0] = 6; /* record length */ | |
1044 | /* DST type is "block end"; simulate with a phony end routine. */ | |
1045 | Local[1] = DST_S_C_BLKEND; | |
1046 | Local[2] = 0; /* unused, must be zero */ | |
1047 | COPY_LONG (&Local[3], Size); | |
1048 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_DBG); | |
1049 | } | |
1050 | \f | |
1051 | ||
1052 | /* Write a Line number <-> Program Counter correlation record. */ | |
1053 | ||
1054 | static void | |
1055 | VMS_TBT_Line_PC_Correlation (Line_Number, Offset, Psect, Do_Delta) | |
1056 | int Line_Number; | |
1057 | int Offset; | |
1058 | int Psect; | |
1059 | int Do_Delta; | |
1060 | { | |
1061 | register char *cp; | |
1062 | char Local[64]; | |
1063 | ||
1064 | if (Do_Delta == 0) | |
1065 | { | |
1066 | /* | |
1067 | * If not delta, set our PC/Line number correlation. | |
1068 | */ | |
1069 | cp = &Local[1]; /* Put size in Local[0] later. */ | |
1070 | /* DST type is "Line Number/PC correlation". */ | |
1071 | *cp++ = DST_S_C_LINE_NUM; | |
1072 | /* Set Line number. */ | |
1073 | if (Line_Number - 1 <= 255) | |
1074 | { | |
1075 | *cp++ = DST_S_C_SET_LINUM_B; | |
1076 | *cp++ = (char) (Line_Number - 1); | |
1077 | } | |
1078 | else if (Line_Number - 1 <= 65535) | |
1079 | { | |
1080 | *cp++ = DST_S_C_SET_LINE_NUM; | |
1081 | COPY_SHORT (cp, Line_Number - 1), cp += 2; | |
1082 | } | |
1083 | else | |
1084 | { | |
1085 | *cp++ = DST_S_C_SET_LINUM_L; | |
1086 | COPY_LONG (cp, Line_Number - 1), cp += 4; | |
1087 | } | |
1088 | /* Set PC. */ | |
1089 | *cp++ = DST_S_C_SET_ABS_PC; | |
1090 | /* Store size now that we know it, then output the data. */ | |
1091 | Local[0] = cp - &Local[1]; | |
1092 | /* Account for the space that TIR_S_C_STO_PIDR will use for the PC. */ | |
1093 | Local[0] += 4; /* size includes length of another longword */ | |
1094 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1095 | /* Make sure we are still generating a OBJ_S_C_TBT record. */ | |
1096 | if (Object_Record_Offset == 0) | |
1097 | PUT_CHAR (OBJ_S_C_TBT); | |
1098 | vms_tir_stack_psect (Psect, Offset, 0); | |
1099 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
1100 | /* Do a PC offset of 0 to register the line number. */ | |
1101 | Local[0] = 2; | |
1102 | Local[1] = DST_S_C_LINE_NUM; | |
1103 | Local[2] = 0; /* Increment PC by 0 and register line # */ | |
1104 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); | |
1105 | } | |
1106 | else | |
1107 | { | |
1108 | if (Do_Delta < 0) | |
1109 | { | |
1110 | /* | |
1111 | * When delta is negative, terminate the line numbers. | |
1112 | */ | |
1113 | Local[0] = 1 + 1 + 4; | |
1114 | Local[1] = DST_S_C_LINE_NUM; | |
1115 | Local[2] = DST_S_C_TERM_L; | |
1116 | COPY_LONG (&Local[3], Offset); | |
1117 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); | |
1118 | return; | |
1119 | } | |
1120 | /* | |
1121 | * Do a PC/Line delta. | |
1122 | */ | |
1123 | cp = &Local[1]; | |
1124 | *cp++ = DST_S_C_LINE_NUM; | |
1125 | if (Line_Number > 1) | |
1126 | { | |
1127 | /* We need to increment the line number. */ | |
1128 | if (Line_Number - 1 <= 255) | |
1129 | { | |
1130 | *cp++ = DST_S_C_INCR_LINUM; | |
1131 | *cp++ = Line_Number - 1; | |
1132 | } | |
1133 | else if (Line_Number - 1 <= 65535) | |
1134 | { | |
1135 | *cp++ = DST_S_C_INCR_LINUM_W; | |
1136 | COPY_SHORT (cp, Line_Number - 1), cp += 2; | |
1137 | } | |
1138 | else | |
1139 | { | |
1140 | *cp++ = DST_S_C_INCR_LINUM_L; | |
1141 | COPY_LONG (cp, Line_Number - 1), cp += 4; | |
1142 | } | |
1143 | } | |
1144 | /* | |
1145 | * Increment the PC | |
1146 | */ | |
1147 | if (Offset <= 128) | |
1148 | { | |
1149 | /* Small offsets are encoded as negative numbers, rather than the | |
1150 | usual non-negative type code followed by another data field. */ | |
1151 | *cp++ = (char) -Offset; | |
1152 | } | |
1153 | else if (Offset <= 65535) | |
1154 | { | |
1155 | *cp++ = DST_S_C_DELTA_PC_W; | |
1156 | COPY_SHORT (cp, Offset), cp += 2; | |
1157 | } | |
1158 | else | |
1159 | { | |
1160 | *cp++ = DST_S_C_DELTA_PC_L; | |
1161 | COPY_LONG (cp, Offset), cp += 4; | |
1162 | } | |
1163 | /* Set size now that be know it, then output the data. */ | |
1164 | Local[0] = cp - &Local[1]; | |
1165 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1166 | } | |
1167 | } | |
1168 | \f | |
1169 | ||
1170 | /* Describe a source file to the debugger. */ | |
1171 | ||
1172 | static int | |
1173 | VMS_TBT_Source_File (Filename, ID_Number) | |
1174 | char *Filename; | |
1175 | int ID_Number; | |
1176 | { | |
1177 | register char *cp; | |
1178 | int len, rfo, ffb, ebk; | |
1179 | char cdt[8]; | |
1180 | char Local[512]; | |
1181 | #ifdef VMS /* Used for native assembly */ | |
1182 | unsigned Status; | |
1183 | struct FAB fab; /* RMS file access block */ | |
1184 | struct NAM nam; /* file name information */ | |
1185 | struct XABDAT xabdat; /* date+time fields */ | |
1186 | struct XABFHC xabfhc; /* file header characteristics */ | |
1187 | char resultant_string_buffer[255 + 1]; | |
1188 | ||
1189 | /* | |
1190 | * Set up RMS structures: | |
1191 | */ | |
1192 | /* FAB -- file access block */ | |
1193 | memset ((char *) &fab, 0, sizeof fab); | |
1194 | fab.fab$b_bid = FAB$C_BID; | |
1195 | fab.fab$b_bln = (unsigned char) sizeof fab; | |
1196 | fab.fab$l_fna = Filename; | |
1197 | fab.fab$b_fns = (unsigned char) strlen (Filename); | |
1198 | fab.fab$l_nam = (char *) &nam; | |
1199 | fab.fab$l_xab = (char *) &xabdat; | |
1200 | /* NAM -- file name block */ | |
1201 | memset ((char *) &nam, 0, sizeof nam); | |
1202 | nam.nam$b_bid = NAM$C_BID; | |
1203 | nam.nam$b_bln = (unsigned char) sizeof nam; | |
1204 | nam.nam$l_rsa = resultant_string_buffer; | |
1205 | nam.nam$b_rss = (unsigned char) (sizeof resultant_string_buffer - 1); | |
1206 | /* XABs -- extended attributes blocks */ | |
1207 | memset ((char *) &xabdat, 0, sizeof xabdat); | |
1208 | xabdat.xab$b_cod = XAB$C_DAT; | |
1209 | xabdat.xab$b_bln = (unsigned char) sizeof xabdat; | |
1210 | xabdat.xab$l_nxt = (char *) &xabfhc; | |
1211 | memset ((char *) &xabfhc, 0, sizeof xabfhc); | |
1212 | xabfhc.xab$b_cod = XAB$C_FHC; | |
1213 | xabfhc.xab$b_bln = (unsigned char) sizeof xabfhc; | |
1214 | xabfhc.xab$l_nxt = 0; | |
1215 | /* | |
1216 | * Get the file information | |
1217 | */ | |
1218 | Status = sys$open (&fab); | |
1219 | if (!(Status & 1)) | |
1220 | { | |
1221 | as_tsktsk (_("Couldn't find source file \"%s\", status=%%X%x"), | |
1222 | Filename, Status); | |
1223 | return 0; | |
1224 | } | |
1225 | sys$close (&fab); | |
1226 | /* Now extract fields of interest. */ | |
1227 | memcpy (cdt, (char *) &xabdat.xab$q_cdt, 8); /* creation date */ | |
1228 | ebk = xabfhc.xab$l_ebk; /* end-of-file block */ | |
1229 | ffb = xabfhc.xab$w_ffb; /* first free byte of last block */ | |
1230 | rfo = xabfhc.xab$b_rfo; /* record format */ | |
1231 | len = nam.nam$b_rsl; /* length of Filename */ | |
1232 | resultant_string_buffer[len] = '\0'; | |
1233 | Filename = resultant_string_buffer; /* full filename */ | |
1234 | #else /* Cross-assembly */ | |
1235 | /* [Perhaps we ought to use actual values derived from stat() here?] */ | |
1236 | memset (cdt, 0, 8); /* null VMS quadword binary time */ | |
1237 | ebk = ffb = rfo = 0; | |
1238 | len = strlen (Filename); | |
1239 | if (len > 255) /* a single byte is used as count prefix */ | |
1240 | { | |
1241 | Filename += (len - 255); /* tail end is more significant */ | |
1242 | len = 255; | |
1243 | } | |
1244 | #endif /* VMS */ | |
1245 | ||
1246 | cp = &Local[1]; /* fill in record length later */ | |
1247 | *cp++ = DST_S_C_SOURCE; /* DST type is "source file" */ | |
1248 | *cp++ = DST_S_C_SRC_FORMFEED; /* formfeeds count as source records */ | |
1249 | *cp++ = DST_S_C_SRC_DECLFILE; /* declare source file */ | |
1250 | know (cp == &Local[4]); | |
1251 | *cp++ = 0; /* fill in this length below */ | |
1252 | *cp++ = 0; /* flags; must be zero */ | |
1253 | COPY_SHORT (cp, ID_Number), cp += 2; /* file ID number */ | |
1254 | memcpy (cp, cdt, 8), cp += 8; /* creation date+time */ | |
1255 | COPY_LONG (cp, ebk), cp += 4; /* end-of-file block */ | |
1256 | COPY_SHORT (cp, ffb), cp += 2; /* first free byte of last block */ | |
1257 | *cp++ = (char) rfo; /* RMS record format */ | |
1258 | /* Filename. */ | |
1259 | *cp++ = (char) len; | |
1260 | while (--len >= 0) | |
1261 | *cp++ = *Filename++; | |
1262 | /* Library module name (none). */ | |
1263 | *cp++ = 0; | |
1264 | /* Now that size is known, fill it in and write out the record. */ | |
bf514e21 | 1265 | Local[4] = cp - &Local[5]; /* source file declaration size */ |
252b5132 RH |
1266 | Local[0] = cp - &Local[1]; /* TBT record size */ |
1267 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1268 | return 1; | |
1269 | } | |
1270 | ||
252b5132 RH |
1271 | /* Traceback information is described in terms of lines from compiler |
1272 | listing files, not lines from source files. We need to set up the | |
1273 | correlation between listing line numbers and source line numbers. | |
1274 | Since gcc's .stabn directives refer to the source lines, we just | |
1275 | need to describe a one-to-one correspondence. */ | |
1276 | ||
1277 | static void | |
1278 | VMS_TBT_Source_Lines (ID_Number, Starting_Line_Number, Number_Of_Lines) | |
1279 | int ID_Number; | |
1280 | int Starting_Line_Number; | |
1281 | int Number_Of_Lines; | |
1282 | { | |
1283 | char *cp; | |
1284 | int chunk_limit; | |
bf514e21 | 1285 | char Local[128]; /* room enough to describe 1310700 lines... */ |
252b5132 RH |
1286 | |
1287 | cp = &Local[1]; /* Put size in Local[0] later. */ | |
1288 | *cp++ = DST_S_C_SOURCE; /* DST type is "source file". */ | |
1289 | *cp++ = DST_S_C_SRC_SETFILE; /* Set Source File. */ | |
1290 | COPY_SHORT (cp, ID_Number), cp += 2; /* File ID Number. */ | |
1291 | /* Set record number and define lines. Since no longword form of | |
1292 | SRC_DEFLINES is available, we need to be able to cope with any huge | |
1293 | files a chunk at a time. It doesn't matter for tracebacks, since | |
1294 | unspecified lines are mapped one-to-one and work out right, but it | |
1295 | does matter within the debugger. Without this explicit mapping, | |
1296 | it will complain about lines not existing in the module. */ | |
1297 | chunk_limit = (sizeof Local - 5) / 6; | |
1298 | if (Number_Of_Lines > 65535 * chunk_limit) /* avoid buffer overflow */ | |
1299 | Number_Of_Lines = 65535 * chunk_limit; | |
1300 | while (Number_Of_Lines > 65535) | |
1301 | { | |
1302 | *cp++ = DST_S_C_SRC_SETREC_L; | |
1303 | COPY_LONG (cp, Starting_Line_Number), cp += 4; | |
1304 | *cp++ = DST_S_C_SRC_DEFLINES_W; | |
1305 | COPY_SHORT (cp, 65535), cp += 2; | |
1306 | Starting_Line_Number += 65535; | |
1307 | Number_Of_Lines -= 65535; | |
1308 | } | |
1309 | /* Set record number and define lines, normal case. */ | |
1310 | if (Starting_Line_Number <= 65535) | |
1311 | { | |
1312 | *cp++ = DST_S_C_SRC_SETREC_W; | |
1313 | COPY_SHORT (cp, Starting_Line_Number), cp += 2; | |
1314 | } | |
1315 | else | |
1316 | { | |
1317 | *cp++ = DST_S_C_SRC_SETREC_L; | |
1318 | COPY_LONG (cp, Starting_Line_Number), cp += 4; | |
1319 | } | |
1320 | *cp++ = DST_S_C_SRC_DEFLINES_W; | |
1321 | COPY_SHORT (cp, Number_Of_Lines), cp += 2; | |
1322 | /* Set size now that be know it, then output the data. */ | |
1323 | Local[0] = cp - &Local[1]; | |
1324 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1325 | } | |
1326 | \f | |
1327 | ||
1328 | /****** Debugger Information support routines ******/ | |
1329 | ||
252b5132 RH |
1330 | /* This routine locates a file in the list of files. If an entry does |
1331 | not exist, one is created. For include files, a new entry is always | |
1332 | created such that inline functions can be properly debugged. */ | |
1333 | ||
1334 | static struct input_file * | |
1335 | find_file (sp) | |
1336 | symbolS *sp; | |
1337 | { | |
1338 | struct input_file *same_file = 0; | |
1339 | struct input_file *fpnt, *last = 0; | |
1340 | char *sp_name; | |
1341 | ||
1342 | for (fpnt = file_root; fpnt; fpnt = fpnt->next) | |
1343 | { | |
1344 | if (fpnt->spnt == sp) | |
1345 | return fpnt; | |
1346 | last = fpnt; | |
1347 | } | |
1348 | sp_name = S_GET_NAME (sp); | |
1349 | for (fpnt = file_root; fpnt; fpnt = fpnt->next) | |
1350 | { | |
1351 | if (strcmp (sp_name, fpnt->name) == 0) | |
1352 | { | |
1353 | if (fpnt->flag == 1) | |
1354 | return fpnt; | |
1355 | same_file = fpnt; | |
1356 | break; | |
1357 | } | |
1358 | } | |
1359 | fpnt = (struct input_file *) xmalloc (sizeof (struct input_file)); | |
1360 | if (!file_root) | |
1361 | file_root = fpnt; | |
1362 | else | |
1363 | last->next = fpnt; | |
1364 | fpnt->next = 0; | |
1365 | fpnt->name = sp_name; | |
1366 | fpnt->min_line = 0x7fffffff; | |
1367 | fpnt->max_line = 0; | |
1368 | fpnt->offset = 0; | |
1369 | fpnt->flag = 0; | |
1370 | fpnt->file_number = 0; | |
1371 | fpnt->spnt = sp; | |
1372 | fpnt->same_file_fpnt = same_file; | |
1373 | return fpnt; | |
1374 | } | |
1375 | ||
252b5132 RH |
1376 | /* This routine converts a number string into an integer, and stops when |
1377 | it sees an invalid character. The return value is the address of the | |
1378 | character just past the last character read. No error is generated. */ | |
1379 | ||
1380 | static char * | |
1381 | cvt_integer (str, rtn) | |
1382 | char *str; | |
1383 | int *rtn; | |
1384 | { | |
1385 | int ival = 0, sgn = 1; | |
1386 | ||
1387 | if (*str == '-') | |
1388 | sgn = -1, ++str; | |
1389 | while (*str >= '0' && *str <= '9') | |
1390 | ival = 10 * ival + *str++ - '0'; | |
1391 | *rtn = sgn * ival; | |
1392 | return str; | |
1393 | } | |
1394 | \f | |
1395 | ||
1396 | /* | |
1397 | * The following functions and definitions are used to generate object | |
1398 | * records that will describe program variables to the VMS debugger. | |
1399 | * | |
1400 | * This file contains many of the routines needed to output debugging info | |
1401 | * into the object file that the VMS debugger needs to understand symbols. | |
1402 | * These routines are called very late in the assembly process, and thus | |
1403 | * we can be fairly lax about changing things, since the GSD and the TIR | |
1404 | * sections have already been output. | |
1405 | */ | |
1406 | ||
252b5132 RH |
1407 | /* This routine fixes the names that are generated by C++, ".this" is a good |
1408 | example. The period does not work for the debugger, since it looks like | |
1409 | the syntax for a structure element, and thus it gets mightily confused. | |
1410 | ||
1411 | We also use this to strip the PsectAttribute hack from the name before we | |
1412 | write a debugger record. */ | |
1413 | ||
1414 | static char * | |
1415 | fix_name (pnt) | |
1416 | char *pnt; | |
1417 | { | |
1418 | char *pnt1; | |
1419 | ||
1420 | /* Kill any leading "_". */ | |
1421 | if (*pnt == '_') | |
1422 | pnt++; | |
1423 | ||
1424 | /* Is there a Psect Attribute to skip?? */ | |
1425 | if (HAS_PSECT_ATTRIBUTES (pnt)) | |
1426 | { | |
1427 | /* Yes: Skip it. */ | |
1428 | pnt += PSECT_ATTRIBUTES_STRING_LENGTH; | |
1429 | while (*pnt) | |
1430 | { | |
1431 | if ((pnt[0] == '$') && (pnt[1] == '$')) | |
1432 | { | |
1433 | pnt += 2; | |
1434 | break; | |
1435 | } | |
1436 | pnt++; | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | /* Here we fix the .this -> $this conversion. */ | |
1441 | for (pnt1 = pnt; *pnt1 != 0; pnt1++) | |
1442 | if (*pnt1 == '.') | |
1443 | *pnt1 = '$'; | |
1444 | ||
1445 | return pnt; | |
1446 | } | |
1447 | ||
252b5132 RH |
1448 | /* When defining a structure, this routine is called to find the name of |
1449 | the actual structure. It is assumed that str points to the equal sign | |
1450 | in the definition, and it moves backward until it finds the start of the | |
1451 | name. If it finds a 0, then it knows that this structure def is in the | |
1452 | outermost level, and thus symbol_name points to the symbol name. */ | |
1453 | ||
1454 | static char * | |
1455 | get_struct_name (str) | |
1456 | char *str; | |
1457 | { | |
1458 | char *pnt; | |
1459 | pnt = str; | |
1460 | while ((*pnt != ':') && (*pnt != '\0')) | |
1461 | pnt--; | |
1462 | if (*pnt == '\0') | |
1463 | return (char *) symbol_name; | |
1464 | *pnt-- = '\0'; | |
1465 | while ((*pnt != ';') && (*pnt != '=')) | |
1466 | pnt--; | |
1467 | if (*pnt == ';') | |
1468 | return pnt + 1; | |
1469 | while ((*pnt < '0') || (*pnt > '9')) | |
1470 | pnt++; | |
1471 | while ((*pnt >= '0') && (*pnt <= '9')) | |
1472 | pnt++; | |
1473 | return pnt; | |
1474 | } | |
1475 | ||
252b5132 RH |
1476 | /* Search symbol list for type number dbx_type. |
1477 | Return a pointer to struct. */ | |
1478 | ||
1479 | static struct VMS_DBG_Symbol * | |
1480 | find_symbol (dbx_type) | |
1481 | int dbx_type; | |
1482 | { | |
1483 | struct VMS_DBG_Symbol *spnt; | |
1484 | ||
1485 | spnt = VMS_Symbol_type_list[SYMTYP_HASH (dbx_type)]; | |
1486 | while (spnt) | |
1487 | { | |
1488 | if (spnt->dbx_type == dbx_type) | |
1489 | break; | |
1490 | spnt = spnt->next; | |
1491 | } | |
1492 | if (!spnt || spnt->advanced != ALIAS) | |
1493 | return spnt; | |
1494 | return find_symbol (spnt->type2); | |
1495 | } | |
1496 | ||
252b5132 RH |
1497 | #if 0 /* obsolete */ |
1498 | /* this routine puts info into either Local or Asuffix, depending on the sign | |
1499 | * of size. The reason is that it is easier to build the variable descriptor | |
1500 | * backwards, while the array descriptor is best built forwards. In the end | |
1501 | * they get put together, if there is not a struct/union/enum along the way | |
1502 | */ | |
1503 | static void | |
1504 | push (value, size1) | |
1505 | int value, size1; | |
1506 | { | |
1507 | if (size1 < 0) | |
1508 | { | |
1509 | size1 = -size1; | |
1510 | if (Lpnt < size1) | |
1511 | { | |
1512 | overflow = 1; | |
1513 | Lpnt = 1; | |
1514 | return; | |
1515 | } | |
1516 | Lpnt -= size1; | |
1517 | md_number_to_chars (&Local[Lpnt + 1], value, size1); | |
1518 | } | |
1519 | else | |
1520 | { | |
1521 | if (Apoint + size1 >= MAX_DEBUG_RECORD) | |
1522 | { | |
1523 | overflow = 1; | |
1524 | Apoint = MAX_DEBUG_RECORD - 1; | |
1525 | return; | |
1526 | } | |
1527 | md_number_to_chars (&Asuffix[Apoint], value, size1); | |
1528 | Apoint += size1; | |
1529 | } | |
1530 | } | |
1531 | #endif | |
1532 | ||
252b5132 RH |
1533 | static void |
1534 | fpush (value, size) | |
1535 | int value, size; | |
1536 | { | |
1537 | if (Apoint + size >= MAX_DEBUG_RECORD) | |
1538 | { | |
1539 | overflow = 1; | |
1540 | Apoint = MAX_DEBUG_RECORD - 1; | |
1541 | return; | |
1542 | } | |
1543 | if (size == 1) | |
1544 | Asuffix[Apoint++] = (char) value; | |
1545 | else | |
1546 | { | |
1547 | md_number_to_chars (&Asuffix[Apoint], value, size); | |
1548 | Apoint += size; | |
1549 | } | |
1550 | } | |
1551 | ||
1552 | static void | |
1553 | rpush (value, size) | |
1554 | int value, size; | |
1555 | { | |
1556 | if (Lpnt < size) | |
1557 | { | |
1558 | overflow = 1; | |
1559 | Lpnt = 1; | |
1560 | return; | |
1561 | } | |
1562 | if (size == 1) | |
1563 | Local[Lpnt--] = (char) value; | |
1564 | else | |
1565 | { | |
1566 | Lpnt -= size; | |
1567 | md_number_to_chars (&Local[Lpnt + 1], value, size); | |
1568 | } | |
1569 | } | |
1570 | ||
252b5132 RH |
1571 | /* This routine generates the array descriptor for a given array. */ |
1572 | ||
1573 | static void | |
1574 | array_suffix (spnt2) | |
1575 | struct VMS_DBG_Symbol *spnt2; | |
1576 | { | |
1577 | struct VMS_DBG_Symbol *spnt; | |
1578 | struct VMS_DBG_Symbol *spnt1; | |
1579 | int rank; | |
1580 | int total_size; | |
1581 | ||
1582 | rank = 0; | |
1583 | spnt = spnt2; | |
1584 | while (spnt->advanced != ARRAY) | |
1585 | { | |
1586 | spnt = find_symbol (spnt->type2); | |
1587 | if (!spnt) | |
1588 | return; | |
1589 | } | |
1590 | spnt1 = spnt; | |
1591 | total_size = 1; | |
1592 | while (spnt1->advanced == ARRAY) | |
1593 | { | |
1594 | rank++; | |
1595 | total_size *= (spnt1->index_max - spnt1->index_min + 1); | |
1596 | spnt1 = find_symbol (spnt1->type2); | |
1597 | } | |
1598 | total_size = total_size * spnt1->data_size; | |
1599 | fpush (spnt1->data_size, 2); /* element size */ | |
1600 | if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
1601 | fpush (0, 1); | |
1602 | else | |
1603 | fpush (spnt1->VMS_type, 1); /* element type */ | |
1604 | fpush (DSC_K_CLASS_A, 1); /* descriptor class */ | |
1605 | fpush (0, 4); /* base address */ | |
1606 | fpush (0, 1); /* scale factor -- not applicable */ | |
1607 | fpush (0, 1); /* digit count -- not applicable */ | |
1608 | fpush (0xc0, 1); /* flags: multiplier block & bounds present */ | |
1609 | fpush (rank, 1); /* number of dimensions */ | |
1610 | fpush (total_size, 4); | |
1611 | fpush (0, 4); /* pointer to element [0][0]...[0] */ | |
1612 | spnt1 = spnt; | |
1613 | while (spnt1->advanced == ARRAY) | |
1614 | { | |
1615 | fpush (spnt1->index_max - spnt1->index_min + 1, 4); | |
1616 | spnt1 = find_symbol (spnt1->type2); | |
1617 | } | |
1618 | spnt1 = spnt; | |
1619 | while (spnt1->advanced == ARRAY) | |
1620 | { | |
1621 | fpush (spnt1->index_min, 4); | |
1622 | fpush (spnt1->index_max, 4); | |
1623 | spnt1 = find_symbol (spnt1->type2); | |
1624 | } | |
1625 | } | |
1626 | ||
252b5132 RH |
1627 | /* This routine generates the start of a variable descriptor based upon |
1628 | a struct/union/enum that has yet to be defined. We define this spot as | |
1629 | a new location, and save four bytes for the address. When the struct is | |
1630 | finally defined, then we can go back and plug in the correct address. */ | |
1631 | ||
1632 | static void | |
1633 | new_forward_ref (dbx_type) | |
1634 | int dbx_type; | |
1635 | { | |
1636 | struct forward_ref *fpnt; | |
1637 | fpnt = (struct forward_ref *) xmalloc (sizeof (struct forward_ref)); | |
1638 | fpnt->next = f_ref_root; | |
1639 | f_ref_root = fpnt; | |
1640 | fpnt->dbx_type = dbx_type; | |
1641 | fpnt->struc_numb = ++structure_count; | |
1642 | fpnt->resolved = 'N'; | |
1643 | rpush (DST_K_TS_IND, 1); /* indirect type specification */ | |
1644 | total_len = 5; | |
1645 | rpush (total_len, 2); | |
1646 | struct_number = -fpnt->struc_numb; | |
1647 | } | |
1648 | ||
252b5132 RH |
1649 | /* This routine generates the variable descriptor used to describe non-basic |
1650 | variables. It calls itself recursively until it gets to the bottom of it | |
1651 | all, and then builds the descriptor backwards. It is easiest to do it | |
1652 | this way since we must periodically write length bytes, and it is easiest | |
1653 | if we know the value when it is time to write it. */ | |
1654 | ||
1655 | static int | |
1656 | gen1 (spnt, array_suffix_len) | |
1657 | struct VMS_DBG_Symbol *spnt; | |
1658 | int array_suffix_len; | |
1659 | { | |
1660 | struct VMS_DBG_Symbol *spnt1; | |
1661 | int i; | |
1662 | ||
1663 | switch (spnt->advanced) | |
1664 | { | |
1665 | case VOID: | |
1666 | rpush (DBG_S_C_VOID, 1); | |
1667 | total_len += 1; | |
1668 | rpush (total_len, 2); | |
1669 | return 0; | |
1670 | case BASIC: | |
1671 | case FUNCTION: | |
1672 | if (array_suffix_len == 0) | |
1673 | { | |
1674 | rpush (spnt->VMS_type, 1); | |
1675 | rpush (DBG_S_C_BASIC, 1); | |
1676 | total_len = 2; | |
1677 | rpush (total_len, 2); | |
1678 | return 1; | |
1679 | } | |
1680 | rpush (0, 4); | |
1681 | rpush (DST_K_VFLAGS_DSC, 1); | |
1682 | rpush (DST_K_TS_DSC, 1); /* descriptor type specification */ | |
1683 | total_len = -2; | |
1684 | return 1; | |
1685 | case STRUCT: | |
1686 | case UNION: | |
1687 | case ENUM: | |
1688 | struct_number = spnt->struc_numb; | |
1689 | if (struct_number < 0) | |
1690 | { | |
1691 | new_forward_ref (spnt->dbx_type); | |
1692 | return 1; | |
1693 | } | |
1694 | rpush (DBG_S_C_STRUCT, 1); | |
1695 | total_len = 5; | |
1696 | rpush (total_len, 2); | |
1697 | return 1; | |
1698 | case POINTER: | |
1699 | spnt1 = find_symbol (spnt->type2); | |
1700 | i = 1; | |
1701 | if (!spnt1) | |
1702 | new_forward_ref (spnt->type2); | |
1703 | else | |
1704 | i = gen1 (spnt1, 0); | |
1705 | if (i) | |
1706 | { /* (*void) is a special case, do not put pointer suffix */ | |
1707 | rpush (DBG_S_C_POINTER, 1); | |
1708 | total_len += 3; | |
1709 | rpush (total_len, 2); | |
1710 | } | |
1711 | return 1; | |
1712 | case ARRAY: | |
1713 | spnt1 = spnt; | |
1714 | while (spnt1->advanced == ARRAY) | |
1715 | { | |
1716 | spnt1 = find_symbol (spnt1->type2); | |
1717 | if (!spnt1) | |
1718 | { | |
1719 | as_tsktsk (_("debugger forward reference error, dbx type %d"), | |
1720 | spnt->type2); | |
1721 | return 0; | |
1722 | } | |
1723 | } | |
1724 | /* It is too late to generate forward references, so the user gets a message. | |
1725 | * This should only happen on a compiler error */ | |
1726 | (void) gen1 (spnt1, 1); | |
1727 | i = Apoint; | |
1728 | array_suffix (spnt); | |
1729 | array_suffix_len = Apoint - i; | |
1730 | switch (spnt1->advanced) | |
1731 | { | |
1732 | case BASIC: | |
1733 | case FUNCTION: | |
1734 | break; | |
1735 | default: | |
1736 | rpush (0, 2); | |
1737 | total_len += 2; | |
1738 | rpush (total_len, 2); | |
1739 | rpush (DST_K_VFLAGS_DSC, 1); | |
1740 | rpush (1, 1); /* flags: element value spec included */ | |
1741 | rpush (1, 1); /* one dimension */ | |
1742 | rpush (DBG_S_C_COMPLEX_ARRAY, 1); | |
1743 | } | |
1744 | total_len += array_suffix_len + 8; | |
1745 | rpush (total_len, 2); | |
1746 | break; | |
1747 | default: /* lint suppression */ | |
1748 | break; | |
1749 | } | |
1750 | return 0; | |
1751 | } | |
1752 | ||
252b5132 RH |
1753 | /* This generates a suffix for a variable. If it is not a defined type yet, |
1754 | then dbx_type contains the type we are expecting so we can generate a | |
1755 | forward reference. This calls gen1 to build most of the descriptor, and | |
1756 | then it puts the icing on at the end. It then dumps whatever is needed | |
1757 | to get a complete descriptor (i.e. struct reference, array suffix). */ | |
1758 | ||
1759 | static void | |
1760 | generate_suffix (spnt, dbx_type) | |
1761 | struct VMS_DBG_Symbol *spnt; | |
1762 | int dbx_type; | |
1763 | { | |
1764 | static const char pvoid[6] = { | |
1765 | 5, /* record.length == 5 */ | |
1766 | DST_K_TYPSPEC, /* record.type == 1 (type specification) */ | |
1767 | 0, /* name.length == 0, no name follows */ | |
1768 | 1, 0, /* type.length == 1 {2 bytes, little endian} */ | |
1769 | DBG_S_C_VOID /* type.type == 5 (pointer to unspecified) */ | |
1770 | }; | |
1771 | int i; | |
1772 | ||
1773 | Apoint = 0; | |
1774 | Lpnt = MAX_DEBUG_RECORD - 1; | |
1775 | total_len = 0; | |
1776 | struct_number = 0; | |
1777 | overflow = 0; | |
1778 | if (!spnt) | |
1779 | new_forward_ref (dbx_type); | |
1780 | else | |
1781 | { | |
1782 | if (spnt->VMS_type != DBG_S_C_ADVANCED_TYPE) | |
1783 | return; /* no suffix needed */ | |
1784 | gen1 (spnt, 0); | |
1785 | } | |
1786 | rpush (0, 1); /* no name (len==0) */ | |
1787 | rpush (DST_K_TYPSPEC, 1); | |
1788 | total_len += 4; | |
1789 | rpush (total_len, 1); | |
1790 | /* If the variable descriptor overflows the record, output a descriptor | |
1791 | for a pointer to void. */ | |
1792 | if ((total_len >= MAX_DEBUG_RECORD) || overflow) | |
1793 | { | |
1794 | as_warn (_("Variable descriptor %d too complicated. Defined as `void *'."), | |
1795 | spnt->dbx_type); | |
1796 | VMS_Store_Immediate_Data (pvoid, 6, OBJ_S_C_DBG); | |
1797 | return; | |
1798 | } | |
1799 | i = 0; | |
1800 | while (Lpnt < MAX_DEBUG_RECORD - 1) | |
1801 | Local[i++] = Local[++Lpnt]; | |
1802 | Lpnt = i; | |
1803 | /* we use this for reference to structure that has already been defined */ | |
1804 | if (struct_number > 0) | |
1805 | { | |
1806 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1807 | Lpnt = 0; | |
1808 | VMS_Store_Struct (struct_number); | |
1809 | } | |
1810 | /* We use this for a forward reference to a structure that has yet to | |
1811 | be defined. We store four bytes of zero to make room for the actual | |
1812 | address once it is known. */ | |
1813 | if (struct_number < 0) | |
1814 | { | |
1815 | struct_number = -struct_number; | |
1816 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1817 | Lpnt = 0; | |
1818 | VMS_Def_Struct (struct_number); | |
1819 | COPY_LONG (&Local[Lpnt], 0L); | |
1820 | Lpnt += 4; | |
1821 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1822 | Lpnt = 0; | |
1823 | } | |
1824 | i = 0; | |
1825 | while (i < Apoint) | |
1826 | Local[Lpnt++] = Asuffix[i++]; | |
1827 | if (Lpnt != 0) | |
1828 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1829 | Lpnt = 0; | |
1830 | } | |
1831 | ||
252b5132 RH |
1832 | /* "novel length" type doesn't work for simple atomic types */ |
1833 | #define USE_BITSTRING_DESCRIPTOR(t) ((t)->advanced == BASIC) | |
1834 | #undef SETUP_BASIC_TYPES | |
1835 | ||
1836 | /* This routine generates a type description for a bitfield. */ | |
1837 | ||
1838 | static void | |
1839 | bitfield_suffix (spnt, width) | |
1840 | struct VMS_DBG_Symbol *spnt; | |
1841 | int width; | |
1842 | { | |
1843 | Local[Lpnt++] = 13; /* rec.len==13 */ | |
1844 | Local[Lpnt++] = DST_K_TYPSPEC; /* a type specification record */ | |
1845 | Local[Lpnt++] = 0; /* not named */ | |
1846 | COPY_SHORT (&Local[Lpnt], 9); /* typ.len==9 */ | |
1847 | Lpnt += 2; | |
1848 | Local[Lpnt++] = DST_K_TS_NOV_LENG; /* This type is a "novel length" | |
1849 | incarnation of some other type. */ | |
1850 | COPY_LONG (&Local[Lpnt], width); /* size in bits == novel length */ | |
1851 | Lpnt += 4; | |
1852 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1853 | Lpnt = 0; | |
1854 | /* assert( spnt->struc_numb > 0 ); */ | |
1855 | VMS_Store_Struct (spnt->struc_numb); /* output 4 more bytes */ | |
1856 | } | |
1857 | ||
252b5132 RH |
1858 | /* Formally define a builtin type, so that it can serve as the target of |
1859 | an indirect reference. It makes bitfield_suffix() easier by avoiding | |
1860 | the need to use a forward reference for the first occurrence of each | |
1861 | type used in a bitfield. */ | |
1862 | ||
1863 | static void | |
1864 | setup_basic_type (spnt) | |
1865 | struct VMS_DBG_Symbol *spnt; | |
1866 | { | |
1867 | #ifdef SETUP_BASIC_TYPES | |
1868 | /* This would be very useful if "novel length" fields actually worked | |
1869 | with basic types like they do with enumerated types. However, | |
1870 | they do not, so this isn't worth doing just so that you can use | |
1871 | EXAMINE/TYPE=(__long_long_int) instead of EXAMINE/QUAD. */ | |
1872 | char *p; | |
1873 | #ifndef SETUP_SYNONYM_TYPES | |
1874 | /* This determines whether compatible things like `int' and `long int' | |
1875 | ought to have distinct type records rather than sharing one. */ | |
1876 | struct VMS_DBG_Symbol *spnt2; | |
1877 | ||
1878 | /* first check whether this type has already been seen by another name */ | |
1879 | for (spnt2 = VMS_Symbol_type_list[SYMTYP_HASH (spnt->VMS_type)]; | |
1880 | spnt2; | |
1881 | spnt2 = spnt2->next) | |
1882 | if (spnt2 != spnt && spnt2->VMS_type == spnt->VMS_type) | |
1883 | { | |
1884 | spnt->struc_numb = spnt2->struc_numb; | |
1885 | return; | |
1886 | } | |
1887 | #endif | |
1888 | ||
1889 | /* `structure number' doesn't really mean `structure'; it means an index | |
1890 | into a linker maintained set of saved locations which can be referenced | |
1891 | again later. */ | |
1892 | spnt->struc_numb = ++structure_count; | |
1893 | VMS_Def_Struct (spnt->struc_numb); /* remember where this type lives */ | |
1894 | /* define the simple scalar type */ | |
1895 | Local[Lpnt++] = 6 + strlen (symbol_name) + 2; /* rec.len */ | |
1896 | Local[Lpnt++] = DST_K_TYPSPEC; /* rec.typ==type specification */ | |
1897 | Local[Lpnt++] = strlen (symbol_name) + 2; | |
1898 | Local[Lpnt++] = '_'; /* prefix name with "__" */ | |
1899 | Local[Lpnt++] = '_'; | |
1900 | for (p = symbol_name; *p; p++) | |
1901 | Local[Lpnt++] = *p == ' ' ? '_' : *p; | |
1902 | COPY_SHORT (&Local[Lpnt], 2); /* typ.len==2 */ | |
1903 | Lpnt += 2; | |
1904 | Local[Lpnt++] = DST_K_TS_ATOM; /* typ.kind is simple type */ | |
1905 | Local[Lpnt++] = spnt->VMS_type; /* typ.type */ | |
1906 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
1907 | Lpnt = 0; | |
1908 | #endif /* SETUP_BASIC_TYPES */ | |
1909 | return; | |
1910 | } | |
1911 | ||
252b5132 RH |
1912 | /* This routine generates a symbol definition for a C symbol for the debugger. |
1913 | It takes a psect and offset for global symbols; if psect < 0, then this is | |
1914 | a local variable and the offset is relative to FP. In this case it can | |
1915 | be either a variable (Offset < 0) or a parameter (Offset > 0). */ | |
1916 | ||
1917 | static void | |
1918 | VMS_DBG_record (spnt, Psect, Offset, Name) | |
1919 | struct VMS_DBG_Symbol *spnt; | |
1920 | int Psect; | |
1921 | int Offset; | |
1922 | char *Name; | |
1923 | { | |
1924 | char *Name_pnt; | |
1925 | int len; | |
1926 | int i = 0; | |
1927 | ||
1928 | /* if there are bad characters in name, convert them */ | |
1929 | Name_pnt = fix_name (Name); | |
1930 | ||
1931 | len = strlen (Name_pnt); | |
1932 | if (Psect < 0) | |
1933 | { /* this is a local variable, referenced to SP */ | |
1934 | Local[i++] = 7 + len; | |
1935 | Local[i++] = spnt->VMS_type; | |
1936 | Local[i++] = (Offset > 0) ? DBG_C_FUNCTION_PARAM : DBG_C_LOCAL_SYM; | |
1937 | COPY_LONG (&Local[i], Offset); | |
1938 | i += 4; | |
1939 | } | |
1940 | else | |
1941 | { | |
1942 | Local[i++] = 7 + len; | |
1943 | Local[i++] = spnt->VMS_type; | |
1944 | Local[i++] = DST_K_VALKIND_ADDR; | |
1945 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
1946 | i = 0; | |
1947 | VMS_Set_Data (Psect, Offset, OBJ_S_C_DBG, 0); | |
1948 | } | |
1949 | Local[i++] = len; | |
1950 | while (*Name_pnt != '\0') | |
1951 | Local[i++] = *Name_pnt++; | |
1952 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
1953 | if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
1954 | generate_suffix (spnt, 0); | |
1955 | } | |
1956 | ||
252b5132 RH |
1957 | /* This routine parses the stabs entries in order to make the definition |
1958 | for the debugger of local symbols and function parameters. */ | |
1959 | ||
1960 | static void | |
1961 | VMS_local_stab_Parse (sp) | |
1962 | symbolS *sp; | |
1963 | { | |
1964 | struct VMS_DBG_Symbol *spnt; | |
1965 | char *pnt; | |
1966 | char *pnt1; | |
1967 | char *str; | |
1968 | int dbx_type; | |
1969 | ||
1970 | dbx_type = 0; | |
1971 | str = S_GET_NAME (sp); | |
1972 | pnt = (char *) strchr (str, ':'); | |
1973 | if (!pnt) | |
1974 | return; /* no colon present */ | |
1975 | pnt1 = pnt++; /* save this for later, and skip colon */ | |
1976 | if (*pnt == 'c') | |
1977 | return; /* ignore static constants */ | |
1978 | ||
1979 | /* there is one little catch that we must be aware of. Sometimes function | |
1980 | * parameters are optimized into registers, and the compiler, in its infiite | |
1981 | * wisdom outputs stabs records for *both*. In general we want to use the | |
1982 | * register if it is present, so we must search the rest of the symbols for | |
1983 | * this function to see if this parameter is assigned to a register. | |
1984 | */ | |
1985 | { | |
1986 | symbolS *sp1; | |
1987 | char *str1; | |
1988 | char *pnt2; | |
1989 | ||
1990 | if (*pnt == 'p') | |
1991 | { | |
1992 | for (sp1 = symbol_next (sp); sp1; sp1 = symbol_next (sp1)) | |
1993 | { | |
1994 | if (!S_IS_DEBUG (sp1)) | |
1995 | continue; | |
1996 | if (S_GET_RAW_TYPE (sp1) == N_FUN) | |
1997 | { | |
1998 | pnt2 = (char *) strchr (S_GET_NAME (sp1), ':') + 1; | |
1999 | if (*pnt2 == 'F' || *pnt2 == 'f') | |
2000 | break; | |
2001 | } | |
2002 | if (S_GET_RAW_TYPE (sp1) != N_RSYM) | |
2003 | continue; | |
2004 | str1 = S_GET_NAME (sp1); /* and get the name */ | |
2005 | pnt2 = str; | |
2006 | while (*pnt2 != ':') | |
2007 | { | |
2008 | if (*pnt2 != *str1) | |
2009 | break; | |
2010 | pnt2++; | |
2011 | str1++; | |
2012 | } | |
2013 | if (*str1 == ':' && *pnt2 == ':') | |
bc0d738a | 2014 | return; /* They are the same! Let's skip this one. */ |
252b5132 RH |
2015 | } /* for */ |
2016 | pnt++; /* skip p in case no register */ | |
2017 | } /* if */ | |
2018 | } /* p block */ | |
2019 | ||
2020 | pnt = cvt_integer (pnt, &dbx_type); | |
2021 | spnt = find_symbol (dbx_type); | |
2022 | if (!spnt) | |
2023 | return; /*Dunno what this is*/ | |
2024 | *pnt1 = '\0'; | |
2025 | VMS_DBG_record (spnt, -1, S_GET_VALUE (sp), str); | |
2026 | *pnt1 = ':'; /* and restore the string */ | |
2027 | return; | |
2028 | } | |
2029 | ||
252b5132 RH |
2030 | /* This routine parses a stabs entry to find the information required |
2031 | to define a variable. It is used for global and static variables. | |
2032 | Basically we need to know the address of the symbol. With older | |
2033 | versions of the compiler, const symbols are treated differently, in | |
2034 | that if they are global they are written into the text psect. The | |
2035 | global symbol entry for such a const is actually written as a program | |
2036 | entry point (Yuk!!), so if we cannot find a symbol in the list of | |
2037 | psects, we must search the entry points as well. static consts are | |
2038 | even harder, since they are never assigned a memory address. The | |
2039 | compiler passes a stab to tell us the value, but I am not sure what | |
2040 | to do with it. */ | |
2041 | ||
2042 | static void | |
2043 | VMS_stab_parse (sp, expected_type, type1, type2, Text_Psect) | |
2044 | symbolS *sp; | |
2045 | int expected_type; /* char */ | |
2046 | int type1, type2, Text_Psect; | |
2047 | { | |
2048 | char *pnt; | |
2049 | char *pnt1; | |
2050 | char *str; | |
2051 | symbolS *sp1; | |
2052 | struct VMS_DBG_Symbol *spnt; | |
2053 | struct VMS_Symbol *vsp; | |
2054 | int dbx_type; | |
2055 | ||
2056 | dbx_type = 0; | |
2057 | str = S_GET_NAME (sp); | |
2058 | pnt = (char *) strchr (str, ':'); | |
2059 | if (!pnt) | |
2060 | return; /* no colon present */ | |
2061 | pnt1 = pnt; /* save this for later*/ | |
2062 | pnt++; | |
2063 | if (*pnt == expected_type) | |
2064 | { | |
2065 | pnt = cvt_integer (pnt + 1, &dbx_type); | |
2066 | spnt = find_symbol (dbx_type); | |
2067 | if (!spnt) | |
2068 | return; /*Dunno what this is*/ | |
2069 | /* | |
2070 | * Now we need to search the symbol table to find the psect and | |
2071 | * offset for this variable. | |
2072 | */ | |
2073 | *pnt1 = '\0'; | |
2074 | vsp = VMS_Symbols; | |
2075 | while (vsp) | |
2076 | { | |
2077 | pnt = S_GET_NAME (vsp->Symbol); | |
2078 | if (pnt && *pnt++ == '_' | |
2079 | /* make sure name is the same and symbol type matches */ | |
2080 | && strcmp (pnt, str) == 0 | |
2081 | && (S_GET_RAW_TYPE (vsp->Symbol) == type1 | |
2082 | || S_GET_RAW_TYPE (vsp->Symbol) == type2)) | |
2083 | break; | |
2084 | vsp = vsp->Next; | |
2085 | } | |
2086 | if (vsp) | |
2087 | { | |
2088 | VMS_DBG_record (spnt, vsp->Psect_Index, vsp->Psect_Offset, str); | |
2089 | *pnt1 = ':'; /* and restore the string */ | |
2090 | return; | |
2091 | } | |
2092 | /* The symbol was not in the symbol list, but it may be an | |
2093 | "entry point" if it was a constant. */ | |
2094 | for (sp1 = symbol_rootP; sp1; sp1 = symbol_next (sp1)) | |
2095 | { | |
2096 | /* | |
2097 | * Dispatch on STAB type | |
2098 | */ | |
2099 | if (S_IS_DEBUG (sp1) || (S_GET_TYPE (sp1) != N_TEXT)) | |
2100 | continue; | |
2101 | pnt = S_GET_NAME (sp1); | |
2102 | if (*pnt == '_') | |
2103 | pnt++; | |
2104 | if (strcmp (pnt, str) == 0) | |
2105 | { | |
2106 | if (!gave_compiler_message && expected_type == 'G') | |
2107 | { | |
2108 | char *long_const_msg = _("\ | |
2109 | ***Warning - the assembly code generated by the compiler has placed \n\ | |
2110 | global constant(s) in the text psect. These will not be available to \n\ | |
2111 | other modules, since this is not the correct way to handle this. You \n\ | |
2112 | have two options: 1) get a patched compiler that does not put global \n\ | |
2113 | constants in the text psect, or 2) remove the 'const' keyword from \n\ | |
2114 | definitions of global variables in your source module(s). Don't say \n\ | |
2115 | I didn't warn you! \n"); | |
2116 | ||
2117 | as_tsktsk (long_const_msg); | |
2118 | gave_compiler_message = 1; | |
2119 | } | |
2120 | VMS_DBG_record (spnt, | |
2121 | Text_Psect, | |
2122 | S_GET_VALUE (sp1), | |
2123 | str); | |
2124 | *pnt1 = ':'; | |
2125 | /* fool assembler to not output this as a routine in the TBT */ | |
2126 | pnt1 = S_GET_NAME (sp1); | |
2127 | *pnt1 = 'L'; | |
2128 | S_SET_NAME (sp1, pnt1); | |
2129 | return; | |
2130 | } | |
2131 | } | |
2132 | } | |
2133 | *pnt1 = ':'; /* and restore the string */ | |
2134 | return; | |
2135 | } | |
2136 | ||
252b5132 RH |
2137 | /* Simpler interfaces into VMS_stab_parse(). */ |
2138 | ||
2139 | static void | |
2140 | VMS_GSYM_Parse (sp, Text_Psect) | |
2141 | symbolS *sp; | |
2142 | int Text_Psect; | |
2143 | { /* Global variables */ | |
2144 | VMS_stab_parse (sp, 'G', (N_UNDF | N_EXT), (N_DATA | N_EXT), Text_Psect); | |
2145 | } | |
2146 | ||
2147 | static void | |
2148 | VMS_LCSYM_Parse (sp, Text_Psect) | |
2149 | symbolS *sp; | |
2150 | int Text_Psect; | |
2151 | { /* Static symbols - uninitialized */ | |
2152 | VMS_stab_parse (sp, 'S', N_BSS, -1, Text_Psect); | |
2153 | } | |
2154 | ||
2155 | static void | |
2156 | VMS_STSYM_Parse (sp, Text_Psect) | |
2157 | symbolS *sp; | |
2158 | int Text_Psect; | |
2159 | { /* Static symbols - initialized */ | |
2160 | VMS_stab_parse (sp, 'S', N_DATA, -1, Text_Psect); | |
2161 | } | |
2162 | ||
252b5132 RH |
2163 | /* For register symbols, we must figure out what range of addresses |
2164 | within the psect are valid. We will use the brackets in the stab | |
2165 | directives to give us guidance as to the PC range that this variable | |
2166 | is in scope. I am still not completely comfortable with this but | |
2167 | as I learn more, I seem to get a better handle on what is going on. | |
2168 | Caveat Emptor. */ | |
2169 | ||
2170 | static void | |
2171 | VMS_RSYM_Parse (sp, Current_Routine, Text_Psect) | |
2172 | symbolS *sp, *Current_Routine; | |
2173 | int Text_Psect; | |
2174 | { | |
2175 | symbolS *symbolP; | |
2176 | struct VMS_DBG_Symbol *spnt; | |
2177 | char *pnt; | |
2178 | char *pnt1; | |
2179 | char *str; | |
2180 | int dbx_type; | |
2181 | int len; | |
2182 | int i = 0; | |
2183 | int bcnt = 0; | |
2184 | int Min_Offset = -1; /* min PC of validity */ | |
2185 | int Max_Offset = 0; /* max PC of validity */ | |
2186 | ||
2187 | for (symbolP = sp; symbolP; symbolP = symbol_next (symbolP)) | |
2188 | { | |
2189 | /* | |
2190 | * Dispatch on STAB type | |
2191 | */ | |
2192 | switch (S_GET_RAW_TYPE (symbolP)) | |
2193 | { | |
2194 | case N_LBRAC: | |
2195 | if (bcnt++ == 0) | |
2196 | Min_Offset = S_GET_VALUE (symbolP); | |
2197 | break; | |
2198 | case N_RBRAC: | |
2199 | if (--bcnt == 0) | |
2200 | Max_Offset = S_GET_VALUE (symbolP) - 1; | |
2201 | break; | |
2202 | } | |
2203 | if ((Min_Offset != -1) && (bcnt == 0)) | |
2204 | break; | |
2205 | if (S_GET_RAW_TYPE (symbolP) == N_FUN) | |
2206 | { | |
2207 | pnt = (char *) strchr (S_GET_NAME (symbolP), ':') + 1; | |
2208 | if (*pnt == 'F' || *pnt == 'f') break; | |
2209 | } | |
2210 | } | |
2211 | ||
2212 | /* Check to see that the addresses were defined. If not, then there | |
2213 | were no brackets in the function, and we must try to search for | |
2214 | the next function. Since functions can be in any order, we should | |
2215 | search all of the symbol list to find the correct ending address. */ | |
2216 | if (Min_Offset == -1) | |
2217 | { | |
2218 | int Max_Source_Offset; | |
2219 | int This_Offset; | |
2220 | ||
2221 | Min_Offset = S_GET_VALUE (sp); | |
2222 | Max_Source_Offset = Min_Offset; /* just in case no N_SLINEs found */ | |
2223 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
2224 | switch (S_GET_RAW_TYPE (symbolP)) | |
2225 | { | |
2226 | case N_TEXT | N_EXT: | |
2227 | This_Offset = S_GET_VALUE (symbolP); | |
2228 | if (This_Offset > Min_Offset && This_Offset < Max_Offset) | |
2229 | Max_Offset = This_Offset; | |
2230 | break; | |
2231 | case N_SLINE: | |
2232 | This_Offset = S_GET_VALUE (symbolP); | |
2233 | if (This_Offset > Max_Source_Offset) | |
2234 | Max_Source_Offset = This_Offset; | |
2235 | break; | |
2236 | } | |
2237 | /* If this is the last routine, then we use the PC of the last source | |
2238 | line as a marker of the max PC for which this reg is valid. */ | |
2239 | if (Max_Offset == 0x7fffffff) | |
2240 | Max_Offset = Max_Source_Offset; | |
2241 | } | |
2242 | ||
2243 | dbx_type = 0; | |
2244 | str = S_GET_NAME (sp); | |
2245 | if ((pnt = (char *) strchr (str, ':')) == 0) | |
2246 | return; /* no colon present */ | |
2247 | pnt1 = pnt; /* save this for later*/ | |
2248 | pnt++; | |
2249 | if (*pnt != 'r') | |
2250 | return; | |
2251 | pnt = cvt_integer (pnt + 1, &dbx_type); | |
2252 | spnt = find_symbol (dbx_type); | |
2253 | if (!spnt) | |
2254 | return; /*Dunno what this is yet*/ | |
2255 | *pnt1 = '\0'; | |
2256 | pnt = fix_name (S_GET_NAME (sp)); /* if there are bad characters in name, convert them */ | |
2257 | len = strlen (pnt); | |
2258 | Local[i++] = 25 + len; | |
2259 | Local[i++] = spnt->VMS_type; | |
2260 | Local[i++] = DST_K_VFLAGS_TVS; /* trailing value specified */ | |
2261 | COPY_LONG (&Local[i], 1 + len); /* relative offset, beyond name */ | |
2262 | i += 4; | |
2263 | Local[i++] = len; /* name length (ascic prefix) */ | |
2264 | while (*pnt != '\0') | |
2265 | Local[i++] = *pnt++; | |
2266 | Local[i++] = DST_K_VS_FOLLOWS; /* value specification follows */ | |
2267 | COPY_SHORT (&Local[i], 15); /* length of rest of record */ | |
2268 | i += 2; | |
2269 | Local[i++] = DST_K_VS_ALLOC_SPLIT; /* split lifetime */ | |
2270 | Local[i++] = 1; /* one binding follows */ | |
2271 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2272 | i = 0; | |
2273 | VMS_Set_Data (Text_Psect, Min_Offset, OBJ_S_C_DBG, 1); | |
2274 | VMS_Set_Data (Text_Psect, Max_Offset, OBJ_S_C_DBG, 1); | |
2275 | Local[i++] = DST_K_VALKIND_REG; /* nested value spec */ | |
2276 | COPY_LONG (&Local[i], S_GET_VALUE (sp)); | |
2277 | i += 4; | |
2278 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2279 | *pnt1 = ':'; | |
2280 | if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2281 | generate_suffix (spnt, 0); | |
2282 | } | |
2283 | ||
252b5132 RH |
2284 | /* This function examines a structure definition, checking all of the elements |
2285 | to make sure that all of them are fully defined. The only thing that we | |
2286 | kick out are arrays of undefined structs, since we do not know how big | |
2287 | they are. All others we can handle with a normal forward reference. */ | |
2288 | ||
2289 | static int | |
2290 | forward_reference (pnt) | |
2291 | char *pnt; | |
2292 | { | |
2293 | struct VMS_DBG_Symbol *spnt, *spnt1; | |
2294 | int i; | |
2295 | ||
2296 | pnt = cvt_integer (pnt + 1, &i); | |
2297 | if (*pnt == ';') | |
2298 | return 0; /* no forward references */ | |
2299 | do | |
2300 | { | |
2301 | pnt = (char *) strchr (pnt, ':'); | |
2302 | pnt = cvt_integer (pnt + 1, &i); | |
2303 | spnt = find_symbol (i); | |
2304 | while (spnt && (spnt->advanced == POINTER || spnt->advanced == ARRAY)) | |
2305 | { | |
2306 | spnt1 = find_symbol (spnt->type2); | |
2307 | if (spnt->advanced == ARRAY && !spnt1) | |
2308 | return 1; | |
2309 | spnt = spnt1; | |
2310 | } | |
2311 | pnt = cvt_integer (pnt + 1, &i); | |
2312 | pnt = cvt_integer (pnt + 1, &i); | |
2313 | } while (*++pnt != ';'); | |
2314 | return 0; /* no forward refences found */ | |
2315 | } | |
2316 | ||
252b5132 RH |
2317 | /* Used to check a single element of a structure on the final pass. */ |
2318 | ||
2319 | static int | |
2320 | final_forward_reference (spnt) | |
2321 | struct VMS_DBG_Symbol *spnt; | |
2322 | { | |
2323 | struct VMS_DBG_Symbol *spnt1; | |
2324 | ||
2325 | while (spnt && (spnt->advanced == POINTER || spnt->advanced == ARRAY)) | |
2326 | { | |
2327 | spnt1 = find_symbol (spnt->type2); | |
2328 | if (spnt->advanced == ARRAY && !spnt1) | |
2329 | return 1; | |
2330 | spnt = spnt1; | |
2331 | } | |
2332 | return 0; /* no forward refences found */ | |
2333 | } | |
2334 | ||
252b5132 RH |
2335 | /* This routine parses the stabs directives to find any definitions of dbx |
2336 | type numbers. It makes a note of all of them, creating a structure | |
2337 | element of VMS_DBG_Symbol that describes it. This also generates the | |
2338 | info for the debugger that describes the struct/union/enum, so that | |
2339 | further references to these data types will be by number | |
2340 | ||
2341 | We have to process pointers right away, since there can be references | |
2342 | to them later in the same stabs directive. We cannot have forward | |
2343 | references to pointers, (but we can have a forward reference to a | |
2344 | pointer to a structure/enum/union) and this is why we process them | |
2345 | immediately. After we process the pointer, then we search for defs | |
2346 | that are nested even deeper. | |
2347 | ||
2348 | 8/15/92: We have to process arrays right away too, because there can | |
2349 | be multiple references to identical array types in one structure | |
2350 | definition, and only the first one has the definition. */ | |
2351 | ||
2352 | static int | |
2353 | VMS_typedef_parse (str) | |
2354 | char *str; | |
2355 | { | |
2356 | char *pnt; | |
2357 | char *pnt1; | |
2358 | const char *pnt2; | |
2359 | int i; | |
2360 | int dtype; | |
2361 | struct forward_ref *fpnt; | |
2362 | int i1, i2, i3, len; | |
2363 | struct VMS_DBG_Symbol *spnt; | |
2364 | struct VMS_DBG_Symbol *spnt1; | |
2365 | ||
2366 | /* check for any nested def's */ | |
2367 | pnt = (char *) strchr (str + 1, '='); | |
2368 | if (pnt && str[1] != '*' && (str[1] != 'a' || str[2] != 'r') | |
2369 | && VMS_typedef_parse (pnt) == 1) | |
2370 | return 1; | |
2371 | /* now find dbx_type of entry */ | |
2372 | pnt = str - 1; | |
2373 | if (*pnt == 'c') | |
2374 | { /* check for static constants */ | |
2375 | *str = '\0'; /* for now we ignore them */ | |
2376 | return 0; | |
2377 | } | |
2378 | while ((*pnt <= '9') && (*pnt >= '0')) | |
2379 | pnt--; | |
2380 | pnt++; /* and get back to the number */ | |
2381 | cvt_integer (pnt, &i1); | |
2382 | spnt = find_symbol (i1); | |
2383 | /* first see if this has been defined already, due to forward reference */ | |
2384 | if (!spnt) | |
2385 | { | |
2386 | i2 = SYMTYP_HASH (i1); | |
2387 | spnt = (struct VMS_DBG_Symbol *) xmalloc (sizeof (struct VMS_DBG_Symbol)); | |
2388 | spnt->next = VMS_Symbol_type_list[i2]; | |
2389 | VMS_Symbol_type_list[i2] = spnt; | |
2390 | spnt->dbx_type = i1; /* and save the type */ | |
2391 | spnt->type2 = spnt->VMS_type = spnt->data_size = 0; | |
2392 | spnt->index_min = spnt->index_max = spnt->struc_numb = 0; | |
2393 | } | |
2394 | /* | |
2395 | * For structs and unions, do a partial parse, otherwise we sometimes get | |
2396 | * circular definitions that are impossible to resolve. We read enough | |
2397 | * info so that any reference to this type has enough info to be resolved. | |
2398 | */ | |
2399 | pnt = str + 1; /* point to character past equal sign */ | |
2400 | if (*pnt >= '0' && *pnt <= '9') | |
2401 | { | |
2402 | if (type_check ("void")) | |
2403 | { /* this is the void symbol */ | |
2404 | *str = '\0'; | |
2405 | spnt->advanced = VOID; | |
2406 | return 0; | |
2407 | } | |
2408 | if (type_check ("unknown type")) | |
2409 | { | |
2410 | *str = '\0'; | |
2411 | spnt->advanced = UNKNOWN; | |
2412 | return 0; | |
2413 | } | |
2414 | pnt1 = cvt_integer (pnt, &i1); | |
2415 | if (i1 != spnt->dbx_type) | |
2416 | { | |
2417 | spnt->advanced = ALIAS; | |
2418 | spnt->type2 = i1; | |
2419 | strcpy (str, pnt1); | |
2420 | return 0; | |
2421 | } | |
2422 | as_tsktsk (_("debugginer output: %d is an unknown untyped variable."), | |
2423 | spnt->dbx_type); | |
2424 | return 1; /* do not know what this is */ | |
2425 | } | |
2426 | ||
2427 | pnt = str + 1; /* point to character past equal sign */ | |
2428 | switch (*pnt) | |
2429 | { | |
2430 | case 'r': | |
2431 | spnt->advanced = BASIC; | |
2432 | if (type_check ("int")) | |
2433 | { | |
2434 | spnt->VMS_type = DBG_S_C_SLINT; | |
2435 | spnt->data_size = 4; | |
2436 | } | |
2437 | else if (type_check ("long int")) | |
2438 | { | |
2439 | spnt->VMS_type = DBG_S_C_SLINT; | |
2440 | spnt->data_size = 4; | |
2441 | } | |
2442 | else if (type_check ("unsigned int")) | |
2443 | { | |
2444 | spnt->VMS_type = DBG_S_C_ULINT; | |
2445 | spnt->data_size = 4; | |
2446 | } | |
2447 | else if (type_check ("long unsigned int")) | |
2448 | { | |
2449 | spnt->VMS_type = DBG_S_C_ULINT; | |
2450 | spnt->data_size = 4; | |
2451 | } | |
2452 | else if (type_check ("short int")) | |
2453 | { | |
2454 | spnt->VMS_type = DBG_S_C_SSINT; | |
2455 | spnt->data_size = 2; | |
2456 | } | |
2457 | else if (type_check ("short unsigned int")) | |
2458 | { | |
2459 | spnt->VMS_type = DBG_S_C_USINT; | |
2460 | spnt->data_size = 2; | |
2461 | } | |
2462 | else if (type_check ("char")) | |
2463 | { | |
2464 | spnt->VMS_type = DBG_S_C_SCHAR; | |
2465 | spnt->data_size = 1; | |
2466 | } | |
2467 | else if (type_check ("signed char")) | |
2468 | { | |
2469 | spnt->VMS_type = DBG_S_C_SCHAR; | |
2470 | spnt->data_size = 1; | |
2471 | } | |
2472 | else if (type_check ("unsigned char")) | |
2473 | { | |
2474 | spnt->VMS_type = DBG_S_C_UCHAR; | |
2475 | spnt->data_size = 1; | |
2476 | } | |
2477 | else if (type_check ("float")) | |
2478 | { | |
2479 | spnt->VMS_type = DBG_S_C_REAL4; | |
2480 | spnt->data_size = 4; | |
2481 | } | |
2482 | else if (type_check ("double")) | |
2483 | { | |
2484 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; | |
2485 | spnt->data_size = 8; | |
2486 | } | |
2487 | else if (type_check ("long double")) | |
2488 | { | |
2489 | /* same as double, at least for now */ | |
2490 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; | |
2491 | spnt->data_size = 8; | |
2492 | } | |
2493 | else if (type_check ("long long int")) | |
2494 | { | |
2495 | spnt->VMS_type = DBG_S_C_SQUAD; /* signed quadword */ | |
2496 | spnt->data_size = 8; | |
2497 | } | |
2498 | else if (type_check ("long long unsigned int")) | |
2499 | { | |
2500 | spnt->VMS_type = DBG_S_C_UQUAD; /* unsigned quadword */ | |
2501 | spnt->data_size = 8; | |
2502 | } | |
2503 | else if (type_check ("complex float")) | |
2504 | { | |
2505 | spnt->VMS_type = DBG_S_C_COMPLX4; | |
2506 | spnt->data_size = 2 * 4; | |
2507 | } | |
2508 | else if (type_check ("complex double")) | |
2509 | { | |
2510 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; | |
2511 | spnt->data_size = 2 * 8; | |
2512 | } | |
2513 | else if (type_check ("complex long double")) | |
2514 | { | |
2515 | /* same as complex double, at least for now */ | |
2516 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; | |
2517 | spnt->data_size = 2 * 8; | |
2518 | } | |
2519 | else | |
2520 | { | |
2521 | /* [pr] | |
2522 | * Shouldn't get here, but if we do, something | |
2523 | * more substantial ought to be done... | |
2524 | */ | |
2525 | spnt->VMS_type = 0; | |
2526 | spnt->data_size = 0; | |
2527 | } | |
2528 | if (spnt->VMS_type != 0) | |
2529 | setup_basic_type (spnt); | |
2530 | pnt1 = (char *) strchr (str, ';') + 1; | |
2531 | break; | |
2532 | case 's': | |
2533 | case 'u': | |
2534 | spnt->advanced = (*pnt == 's') ? STRUCT : UNION; | |
2535 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2536 | pnt1 = cvt_integer (pnt + 1, &spnt->data_size); | |
2537 | if (!final_pass && forward_reference (pnt)) | |
2538 | { | |
2539 | spnt->struc_numb = -1; | |
2540 | return 1; | |
2541 | } | |
2542 | spnt->struc_numb = ++structure_count; | |
2543 | pnt1--; | |
2544 | pnt = get_struct_name (str); | |
2545 | VMS_Def_Struct (spnt->struc_numb); | |
2546 | i = 0; | |
2547 | for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) | |
2548 | if (fpnt->dbx_type == spnt->dbx_type) | |
2549 | { | |
2550 | fpnt->resolved = 'Y'; | |
2551 | VMS_Set_Struct (fpnt->struc_numb); | |
2552 | VMS_Store_Struct (spnt->struc_numb); | |
2553 | i++; | |
2554 | } | |
2555 | if (i > 0) | |
2556 | VMS_Set_Struct (spnt->struc_numb); | |
2557 | i = 0; | |
2558 | Local[i++] = 11 + strlen (pnt); | |
2559 | Local[i++] = DBG_S_C_STRUCT_START; | |
2560 | Local[i++] = DST_K_VFLAGS_NOVAL; /* structure definition only */ | |
2561 | COPY_LONG (&Local[i], 0L); /* hence value is unused */ | |
2562 | i += 4; | |
2563 | Local[i++] = strlen (pnt); | |
2564 | pnt2 = pnt; | |
2565 | while (*pnt2 != '\0') | |
2566 | Local[i++] = *pnt2++; | |
2567 | i2 = spnt->data_size * 8; /* number of bits */ | |
2568 | COPY_LONG (&Local[i], i2); | |
2569 | i += 4; | |
2570 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2571 | i = 0; | |
2572 | if (pnt != symbol_name) | |
2573 | { | |
2574 | pnt += strlen (pnt); | |
2575 | *pnt = ':'; | |
2576 | } /* replace colon for later */ | |
2577 | while (*++pnt1 != ';') | |
2578 | { | |
2579 | pnt = (char *) strchr (pnt1, ':'); | |
2580 | *pnt = '\0'; | |
2581 | pnt2 = pnt1; | |
2582 | pnt1 = cvt_integer (pnt + 1, &dtype); | |
2583 | pnt1 = cvt_integer (pnt1 + 1, &i2); | |
2584 | pnt1 = cvt_integer (pnt1 + 1, &i3); | |
2585 | spnt1 = find_symbol (dtype); | |
2586 | len = strlen (pnt2); | |
2587 | if (spnt1 && (spnt1->advanced == BASIC || spnt1->advanced == ENUM) | |
2588 | && ((i3 != spnt1->data_size * 8) || (i2 % 8 != 0))) | |
2589 | { /* bitfield */ | |
2590 | if (USE_BITSTRING_DESCRIPTOR (spnt1)) | |
2591 | { | |
2592 | /* This uses a type descriptor, which doesn't work if | |
2593 | the enclosing structure has been placed in a register. | |
2594 | Also, enum bitfields degenerate to simple integers. */ | |
2595 | int unsigned_type = (spnt1->VMS_type == DBG_S_C_ULINT | |
2596 | || spnt1->VMS_type == DBG_S_C_USINT | |
2597 | || spnt1->VMS_type == DBG_S_C_UCHAR | |
2598 | || spnt1->VMS_type == DBG_S_C_UQUAD | |
2599 | || spnt1->advanced == ENUM); /* (approximate) */ | |
2600 | Apoint = 0; | |
2601 | fpush (19 + len, 1); | |
2602 | fpush (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); | |
2603 | fpush (DST_K_VFLAGS_DSC, 1); /* specified by descriptor */ | |
2604 | fpush (1 + len, 4); /* relative offset to descriptor */ | |
2605 | fpush (len, 1); /* length byte (ascic prefix) */ | |
2606 | while (*pnt2 != '\0') /* name bytes */ | |
2607 | fpush (*pnt2++, 1); | |
2608 | fpush (i3, 2); /* dsc length == size of bitfield */ | |
2609 | /* dsc type == un?signed bitfield */ | |
2610 | fpush (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); | |
2611 | fpush (DSC_K_CLASS_UBS, 1); /* dsc class == unaligned bitstring */ | |
2612 | fpush (0x00, 4); /* dsc pointer == zeroes */ | |
2613 | fpush (i2, 4); /* start position */ | |
2614 | VMS_Store_Immediate_Data (Asuffix, Apoint, OBJ_S_C_DBG); | |
2615 | Apoint = 0; | |
2616 | } | |
2617 | else | |
2618 | { | |
2619 | /* Use a "novel length" type specification, which works | |
2620 | right for register structures and for enum bitfields | |
2621 | but results in larger object modules. */ | |
2622 | Local[i++] = 7 + len; | |
2623 | Local[i++] = DBG_S_C_ADVANCED_TYPE; /* type spec follows */ | |
2624 | Local[i++] = DBG_S_C_STRUCT_ITEM; /* value is a bit offset */ | |
2625 | COPY_LONG (&Local[i], i2); /* bit offset */ | |
2626 | i += 4; | |
2627 | Local[i++] = strlen (pnt2); | |
2628 | while (*pnt2 != '\0') | |
2629 | Local[i++] = *pnt2++; | |
2630 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2631 | i = 0; | |
2632 | bitfield_suffix (spnt1, i3); | |
2633 | } | |
2634 | } | |
2635 | else | |
2636 | { /* not a bitfield */ | |
2637 | /* check if this is a forward reference */ | |
2638 | if (final_pass && final_forward_reference (spnt1)) | |
2639 | { | |
2640 | as_tsktsk (_("debugger output: structure element `%s' has undefined type"), | |
2641 | pnt2); | |
2642 | continue; | |
2643 | } | |
2644 | Local[i++] = 7 + len; | |
2645 | Local[i++] = spnt1 ? spnt1->VMS_type : DBG_S_C_ADVANCED_TYPE; | |
2646 | Local[i++] = DBG_S_C_STRUCT_ITEM; | |
2647 | COPY_LONG (&Local[i], i2); /* bit offset */ | |
2648 | i += 4; | |
2649 | Local[i++] = strlen (pnt2); | |
2650 | while (*pnt2 != '\0') | |
2651 | Local[i++] = *pnt2++; | |
2652 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2653 | i = 0; | |
2654 | if (!spnt1) | |
2655 | generate_suffix (spnt1, dtype); | |
2656 | else if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2657 | generate_suffix (spnt1, 0); | |
2658 | } | |
2659 | } | |
2660 | pnt1++; | |
2661 | Local[i++] = 0x01; /* length byte */ | |
2662 | Local[i++] = DBG_S_C_STRUCT_END; | |
2663 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2664 | i = 0; | |
2665 | break; | |
2666 | case 'e': | |
2667 | spnt->advanced = ENUM; | |
2668 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2669 | spnt->struc_numb = ++structure_count; | |
2670 | spnt->data_size = 4; | |
2671 | VMS_Def_Struct (spnt->struc_numb); | |
2672 | i = 0; | |
2673 | for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) | |
2674 | if (fpnt->dbx_type == spnt->dbx_type) | |
2675 | { | |
2676 | fpnt->resolved = 'Y'; | |
2677 | VMS_Set_Struct (fpnt->struc_numb); | |
2678 | VMS_Store_Struct (spnt->struc_numb); | |
2679 | i++; | |
2680 | } | |
2681 | if (i > 0) | |
2682 | VMS_Set_Struct (spnt->struc_numb); | |
2683 | i = 0; | |
2684 | len = strlen (symbol_name); | |
2685 | Local[i++] = 3 + len; | |
2686 | Local[i++] = DBG_S_C_ENUM_START; | |
2687 | Local[i++] = 4 * 8; /* enum values are 32 bits */ | |
2688 | Local[i++] = len; | |
2689 | pnt2 = symbol_name; | |
2690 | while (*pnt2 != '\0') | |
2691 | Local[i++] = *pnt2++; | |
2692 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2693 | i = 0; | |
2694 | while (*++pnt != ';') | |
2695 | { | |
2696 | pnt1 = (char *) strchr (pnt, ':'); | |
2697 | *pnt1++ = '\0'; | |
2698 | pnt1 = cvt_integer (pnt1, &i1); | |
2699 | len = strlen (pnt); | |
2700 | Local[i++] = 7 + len; | |
2701 | Local[i++] = DBG_S_C_ENUM_ITEM; | |
2702 | Local[i++] = DST_K_VALKIND_LITERAL; | |
2703 | COPY_LONG (&Local[i], i1); | |
2704 | i += 4; | |
2705 | Local[i++] = len; | |
2706 | pnt2 = pnt; | |
2707 | while (*pnt != '\0') | |
2708 | Local[i++] = *pnt++; | |
2709 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2710 | i = 0; | |
2711 | pnt = pnt1; /* Skip final semicolon */ | |
2712 | } | |
2713 | Local[i++] = 0x01; /* len byte */ | |
2714 | Local[i++] = DBG_S_C_ENUM_END; | |
2715 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2716 | i = 0; | |
2717 | pnt1 = pnt + 1; | |
2718 | break; | |
2719 | case 'a': | |
2720 | spnt->advanced = ARRAY; | |
2721 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2722 | pnt = (char *) strchr (pnt, ';'); | |
2723 | if (!pnt) | |
2724 | return 1; | |
2725 | pnt1 = cvt_integer (pnt + 1, &spnt->index_min); | |
2726 | pnt1 = cvt_integer (pnt1 + 1, &spnt->index_max); | |
2727 | pnt1 = cvt_integer (pnt1 + 1, &spnt->type2); | |
2728 | pnt = (char *) strchr (str + 1, '='); | |
2729 | if (pnt && VMS_typedef_parse (pnt) == 1) | |
2730 | return 1; | |
2731 | break; | |
2732 | case 'f': | |
2733 | spnt->advanced = FUNCTION; | |
2734 | spnt->VMS_type = DBG_S_C_FUNCTION_ADDR; | |
2735 | /* this masquerades as a basic type*/ | |
2736 | spnt->data_size = 4; | |
2737 | pnt1 = cvt_integer (pnt + 1, &spnt->type2); | |
2738 | break; | |
2739 | case '*': | |
2740 | spnt->advanced = POINTER; | |
2741 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2742 | spnt->data_size = 4; | |
2743 | pnt1 = cvt_integer (pnt + 1, &spnt->type2); | |
2744 | pnt = (char *) strchr (str + 1, '='); | |
2745 | if (pnt && VMS_typedef_parse (pnt) == 1) | |
2746 | return 1; | |
2747 | break; | |
2748 | default: | |
2749 | spnt->advanced = UNKNOWN; | |
2750 | spnt->VMS_type = 0; | |
2751 | as_tsktsk (_("debugger output: %d is an unknown type of variable."), | |
2752 | spnt->dbx_type); | |
2753 | return 1; /* unable to decipher */ | |
2754 | } | |
2755 | /* This removes the evidence of the definition so that the outer levels | |
2756 | of parsing do not have to worry about it. */ | |
2757 | pnt = str; | |
2758 | while (*pnt1 != '\0') | |
2759 | *pnt++ = *pnt1++; | |
2760 | *pnt = '\0'; | |
2761 | return 0; | |
2762 | } | |
2763 | ||
252b5132 RH |
2764 | /* This is the root routine that parses the stabs entries for definitions. |
2765 | it calls VMS_typedef_parse, which can in turn call itself. We need to | |
2766 | be careful, since sometimes there are forward references to other symbol | |
2767 | types, and these cannot be resolved until we have completed the parse. | |
2768 | ||
2769 | Also check and see if we are using continuation stabs, if we are, then | |
2770 | paste together the entire contents of the stab before we pass it to | |
2771 | VMS_typedef_parse. */ | |
2772 | ||
2773 | static void | |
2774 | VMS_LSYM_Parse () | |
2775 | { | |
2776 | char *pnt; | |
2777 | char *pnt1; | |
2778 | char *pnt2; | |
2779 | char *str; | |
2780 | char *parse_buffer = 0; | |
2781 | char fixit[10]; | |
2782 | int incomplete, pass, incom1; | |
2783 | struct forward_ref *fpnt; | |
2784 | symbolS *sp; | |
2785 | ||
2786 | pass = 0; | |
2787 | final_pass = 0; | |
2788 | incomplete = 0; | |
2789 | do | |
2790 | { | |
2791 | incom1 = incomplete; | |
2792 | incomplete = 0; | |
2793 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
2794 | { | |
2795 | /* | |
2796 | * Deal with STAB symbols | |
2797 | */ | |
2798 | if (S_IS_DEBUG (sp)) | |
2799 | { | |
2800 | /* | |
2801 | * Dispatch on STAB type | |
2802 | */ | |
2803 | switch (S_GET_RAW_TYPE (sp)) | |
2804 | { | |
2805 | case N_GSYM: | |
2806 | case N_LCSYM: | |
2807 | case N_STSYM: | |
2808 | case N_PSYM: | |
2809 | case N_RSYM: | |
2810 | case N_LSYM: | |
2811 | case N_FUN: /*sometimes these contain typedefs*/ | |
2812 | str = S_GET_NAME (sp); | |
2813 | symbol_name = str; | |
2814 | pnt = str + strlen (str) - 1; | |
2815 | if (*pnt == '?') /* Continuation stab. */ | |
2816 | { | |
2817 | symbolS *spnext; | |
2818 | int tlen = 0; | |
2819 | ||
2820 | spnext = sp; | |
2821 | do { | |
2822 | tlen += strlen (str) - 1; | |
2823 | spnext = symbol_next (spnext); | |
2824 | str = S_GET_NAME (spnext); | |
2825 | pnt = str + strlen (str) - 1; | |
2826 | } while (*pnt == '?'); | |
2827 | tlen += strlen (str); | |
2828 | parse_buffer = (char *) xmalloc (tlen + 1); | |
2829 | strcpy (parse_buffer, S_GET_NAME (sp)); | |
2830 | pnt2 = parse_buffer + strlen (parse_buffer) - 1; | |
2831 | *pnt2 = '\0'; | |
2832 | spnext = sp; | |
2833 | do { | |
2834 | spnext = symbol_next (spnext); | |
2835 | str = S_GET_NAME (spnext); | |
2836 | strcat (pnt2, str); | |
2837 | pnt2 += strlen (str) - 1; | |
2838 | *str = '\0'; /* Erase this string */ | |
2839 | /* S_SET_NAME (spnext, str); */ | |
2840 | if (*pnt2 != '?') break; | |
2841 | *pnt2 = '\0'; | |
2842 | } while (1); | |
2843 | str = parse_buffer; | |
2844 | symbol_name = str; | |
2845 | } | |
2846 | if ((pnt = (char *) strchr (str, ':')) != 0) | |
2847 | { | |
2848 | *pnt = '\0'; | |
2849 | pnt1 = pnt + 1; | |
2850 | if ((pnt2 = (char *) strchr (pnt1, '=')) != 0) | |
2851 | incomplete += VMS_typedef_parse (pnt2); | |
2852 | if (parse_buffer) | |
2853 | { | |
2854 | /* At this point the parse buffer should just | |
2855 | contain name:nn. If it does not, then we | |
2856 | are in real trouble. Anyway, this is always | |
2857 | shorter than the original line. */ | |
2858 | pnt2 = S_GET_NAME (sp); | |
2859 | strcpy (pnt2, parse_buffer); | |
2860 | /* S_SET_NAME (sp, pnt2); */ | |
2861 | free (parse_buffer), parse_buffer = 0; | |
2862 | } | |
2863 | *pnt = ':'; /* put back colon to restore dbx_type */ | |
2864 | } | |
2865 | break; | |
2866 | } /*switch*/ | |
2867 | } /* if */ | |
2868 | } /*for*/ | |
2869 | pass++; | |
2870 | /* | |
2871 | * Make one last pass, if needed, and define whatever we can | |
2872 | * that is left. | |
2873 | */ | |
2874 | if (final_pass == 0 && incomplete == incom1) | |
2875 | { | |
2876 | final_pass = 1; | |
2877 | incom1++; /* Force one last pass through */ | |
2878 | } | |
2879 | } while (incomplete != 0 && incomplete != incom1); | |
2880 | /* repeat until all refs resolved if possible */ | |
2881 | /* if (pass > 1) printf (" Required %d passes\n", pass); */ | |
2882 | if (incomplete != 0) | |
2883 | { | |
2884 | as_tsktsk (_("debugger output: Unable to resolve %d circular references."), | |
2885 | incomplete); | |
2886 | } | |
2887 | fpnt = f_ref_root; | |
2888 | symbol_name = "\0"; | |
2889 | while (fpnt) | |
2890 | { | |
2891 | if (fpnt->resolved != 'Y') | |
2892 | { | |
2893 | if (find_symbol (fpnt->dbx_type)) | |
2894 | { | |
2895 | as_tsktsk (_("debugger forward reference error, dbx type %d"), | |
2896 | fpnt->dbx_type); | |
2897 | break; | |
2898 | } | |
2899 | fixit[0] = 0; | |
2900 | sprintf (&fixit[1], "%d=s4;", fpnt->dbx_type); | |
2901 | pnt2 = (char *) strchr (&fixit[1], '='); | |
2902 | VMS_typedef_parse (pnt2); | |
2903 | } | |
2904 | fpnt = fpnt->next; | |
2905 | } | |
2906 | } | |
2907 | ||
252b5132 RH |
2908 | static void |
2909 | Define_Local_Symbols (s0P, s2P, Current_Routine, Text_Psect) | |
2910 | symbolS *s0P, *s2P; | |
2911 | symbolS *Current_Routine; | |
2912 | int Text_Psect; | |
2913 | { | |
2914 | symbolS *s1P; /* each symbol from s0P .. s2P (exclusive) */ | |
2915 | ||
2916 | for (s1P = symbol_next (s0P); s1P != s2P; s1P = symbol_next (s1P)) | |
2917 | { | |
2918 | if (!s1P) | |
2919 | break; /* and return */ | |
2920 | if (S_GET_RAW_TYPE (s1P) == N_FUN) | |
2921 | { | |
2922 | char *pnt = (char *) strchr (S_GET_NAME (s1P), ':') + 1; | |
2923 | if (*pnt == 'F' || *pnt == 'f') break; | |
2924 | } | |
2925 | if (!S_IS_DEBUG (s1P)) | |
2926 | continue; | |
2927 | /* | |
2928 | * Dispatch on STAB type | |
2929 | */ | |
2930 | switch (S_GET_RAW_TYPE (s1P)) | |
2931 | { | |
2932 | default: | |
2933 | continue; /* not left or right brace */ | |
2934 | ||
2935 | case N_LSYM: | |
2936 | case N_PSYM: | |
2937 | VMS_local_stab_Parse (s1P); | |
2938 | break; | |
2939 | ||
2940 | case N_RSYM: | |
2941 | VMS_RSYM_Parse (s1P, Current_Routine, Text_Psect); | |
2942 | break; | |
2943 | } /*switch*/ | |
2944 | } /* for */ | |
2945 | } | |
2946 | ||
252b5132 RH |
2947 | /* This function crawls the symbol chain searching for local symbols that |
2948 | need to be described to the debugger. When we enter a new scope with | |
2949 | a "{", it creates a new "block", which helps the debugger keep track | |
2950 | of which scope we are currently in. */ | |
2951 | ||
2952 | static symbolS * | |
2953 | Define_Routine (s0P, Level, Current_Routine, Text_Psect) | |
2954 | symbolS *s0P; | |
2955 | int Level; | |
2956 | symbolS *Current_Routine; | |
2957 | int Text_Psect; | |
2958 | { | |
2959 | symbolS *s1P; | |
2960 | valueT Offset; | |
2961 | int rcount = 0; | |
2962 | ||
2963 | for (s1P = symbol_next (s0P); s1P != 0; s1P = symbol_next (s1P)) | |
2964 | { | |
2965 | if (S_GET_RAW_TYPE (s1P) == N_FUN) | |
2966 | { | |
2967 | char *pnt = (char *) strchr (S_GET_NAME (s1P), ':') + 1; | |
2968 | if (*pnt == 'F' || *pnt == 'f') break; | |
2969 | } | |
2970 | if (!S_IS_DEBUG (s1P)) | |
2971 | continue; | |
2972 | /* | |
2973 | * Dispatch on STAB type | |
2974 | */ | |
2975 | switch (S_GET_RAW_TYPE (s1P)) | |
2976 | { | |
2977 | default: | |
2978 | continue; /* not left or right brace */ | |
2979 | ||
2980 | case N_LBRAC: | |
2981 | if (Level != 0) | |
2982 | { | |
2983 | char str[10]; | |
2984 | sprintf (str, "$%d", rcount++); | |
2985 | VMS_TBT_Block_Begin (s1P, Text_Psect, str); | |
2986 | } | |
2987 | Offset = S_GET_VALUE (s1P); /* side-effect: fully resolve symbol */ | |
2988 | Define_Local_Symbols (s0P, s1P, Current_Routine, Text_Psect); | |
2989 | s1P = Define_Routine (s1P, Level + 1, Current_Routine, Text_Psect); | |
2990 | if (Level != 0) | |
2991 | VMS_TBT_Block_End (S_GET_VALUE (s1P) - Offset); | |
2992 | s0P = s1P; | |
2993 | break; | |
2994 | ||
2995 | case N_RBRAC: | |
2996 | return s1P; | |
2997 | } /*switch*/ | |
2998 | } /* for */ | |
2999 | ||
3000 | /* We end up here if there were no brackets in this function. | |
3001 | Define everything. */ | |
3002 | Define_Local_Symbols (s0P, (symbolS *)0, Current_Routine, Text_Psect); | |
3003 | return s1P; | |
3004 | } | |
3005 | \f | |
3006 | ||
3007 | #ifndef VMS | |
3008 | #include <sys/types.h> | |
3009 | #include <time.h> | |
3010 | static void get_VMS_time_on_unix PARAMS ((char *)); | |
3011 | ||
3012 | /* Manufacture a VMS-like time string on a Unix based system. */ | |
3013 | static void | |
3014 | get_VMS_time_on_unix (Now) | |
3015 | char *Now; | |
3016 | { | |
3017 | char *pnt; | |
3018 | time_t timeb; | |
3019 | ||
3020 | time (&timeb); | |
3021 | pnt = ctime (&timeb); | |
3022 | pnt[3] = 0; | |
3023 | pnt[7] = 0; | |
3024 | pnt[10] = 0; | |
3025 | pnt[16] = 0; | |
3026 | pnt[24] = 0; | |
3027 | sprintf (Now, "%2s-%3s-%s %s", pnt + 8, pnt + 4, pnt + 20, pnt + 11); | |
3028 | } | |
3029 | #endif /* not VMS */ | |
3030 | ||
252b5132 RH |
3031 | /* Write the MHD (Module Header) records. */ |
3032 | ||
3033 | static void | |
3034 | Write_VMS_MHD_Records () | |
3035 | { | |
3036 | register const char *cp; | |
3037 | register char *cp1; | |
3038 | register int i; | |
3039 | #ifdef VMS | |
3040 | struct { unsigned short len, mbz; char *ptr; } Descriptor; | |
3041 | #endif | |
3042 | char Now[17+1]; | |
3043 | ||
3044 | /* We are writing a module header record. */ | |
3045 | Set_VMS_Object_File_Record (OBJ_S_C_HDR); | |
3046 | /* | |
3047 | * *************************** | |
3048 | * *MAIN MODULE HEADER RECORD* | |
3049 | * *************************** | |
3050 | */ | |
3051 | /* Store record type and header type. */ | |
3052 | PUT_CHAR (OBJ_S_C_HDR); | |
3053 | PUT_CHAR (MHD_S_C_MHD); | |
3054 | /* Structure level is 0. */ | |
3055 | PUT_CHAR (OBJ_S_C_STRLVL); | |
3056 | /* Maximum record size is size of the object record buffer. */ | |
3057 | PUT_SHORT (sizeof (Object_Record_Buffer)); | |
3058 | ||
3059 | /* | |
3060 | * FIXME: module name and version should be user | |
3061 | * specifiable via `.ident' and/or `#pragma ident'. | |
3062 | */ | |
3063 | ||
3064 | /* Get module name (the FILENAME part of the object file). */ | |
3065 | cp = out_file_name; | |
3066 | cp1 = Module_Name; | |
3067 | while (*cp) | |
3068 | { | |
3069 | if (*cp == ']' || *cp == '>' || *cp == ':' || *cp == '/') | |
3070 | { | |
3071 | cp1 = Module_Name; | |
3072 | cp++; | |
3073 | continue; | |
3074 | } | |
3882b010 | 3075 | *cp1++ = TOUPPER (*cp++); |
252b5132 RH |
3076 | } |
3077 | *cp1 = '\0'; | |
3078 | ||
3079 | /* Limit it to 31 characters and store in the object record. */ | |
3080 | while (--cp1 >= Module_Name) | |
3081 | if (*cp1 == '.') | |
3082 | *cp1 = '\0'; | |
3083 | if (strlen (Module_Name) > 31) | |
3084 | { | |
3085 | if (flag_hash_long_names) | |
3086 | as_tsktsk (_("Module name truncated: %s\n"), Module_Name); | |
3087 | Module_Name[31] = '\0'; | |
3088 | } | |
3089 | PUT_COUNTED_STRING (Module_Name); | |
3090 | /* Module Version is "V1.0". */ | |
3091 | PUT_COUNTED_STRING ("V1.0"); | |
3092 | /* Creation time is "now" (17 chars of time string): "dd-MMM-yyyy hh:mm". */ | |
3093 | #ifndef VMS | |
3094 | get_VMS_time_on_unix (Now); | |
3095 | #else /* VMS */ | |
3096 | Descriptor.len = sizeof Now - 1; | |
3097 | Descriptor.mbz = 0; /* type & class unspecified */ | |
3098 | Descriptor.ptr = Now; | |
3099 | (void) sys$asctim ((unsigned short *)0, &Descriptor, (long *)0, 0); | |
3100 | #endif /* VMS */ | |
3101 | for (i = 0; i < 17; i++) | |
3102 | PUT_CHAR (Now[i]); | |
3103 | /* Patch time is "never" (17 zeros). */ | |
3104 | for (i = 0; i < 17; i++) | |
3105 | PUT_CHAR (0); | |
3106 | /* Force this to be a separate output record. */ | |
3107 | Flush_VMS_Object_Record_Buffer (); | |
3108 | ||
3109 | /* | |
3110 | * ************************* | |
3111 | * *LANGUAGE PROCESSOR NAME* | |
3112 | * ************************* | |
3113 | */ | |
3114 | /* Store record type and header type. */ | |
3115 | PUT_CHAR (OBJ_S_C_HDR); | |
3116 | PUT_CHAR (MHD_S_C_LNM); | |
3117 | /* | |
3118 | * Store language processor name and version (not a counted string!). | |
3119 | * | |
3120 | * This is normally supplied by the gcc driver for the command line | |
3121 | * which invokes gas. If absent, we fall back to gas's version. | |
3122 | */ | |
3123 | cp = compiler_version_string; | |
3124 | if (cp == 0) | |
3125 | { | |
3126 | cp = "GNU AS V"; | |
3127 | while (*cp) | |
3128 | PUT_CHAR (*cp++); | |
3129 | cp = VERSION; | |
3130 | } | |
3131 | while (*cp >= ' ') | |
3132 | PUT_CHAR (*cp++); | |
3133 | /* Force this to be a separate output record. */ | |
3134 | Flush_VMS_Object_Record_Buffer (); | |
3135 | } | |
3136 | ||
252b5132 RH |
3137 | /* Write the EOM (End Of Module) record. */ |
3138 | ||
3139 | static void | |
3140 | Write_VMS_EOM_Record (Psect, Offset) | |
3141 | int Psect; | |
3142 | valueT Offset; | |
3143 | { | |
3144 | /* | |
3145 | * We are writing an end-of-module record | |
3146 | * (this assumes that the entry point will always be in a psect | |
3147 | * represented by a single byte, which is the case for code in | |
3148 | * Text_Psect==0) | |
3149 | */ | |
3150 | Set_VMS_Object_File_Record (OBJ_S_C_EOM); | |
3151 | PUT_CHAR (OBJ_S_C_EOM); /* Record type. */ | |
bf514e21 | 3152 | PUT_CHAR (0); /* Error severity level (we ignore it). */ |
252b5132 RH |
3153 | /* |
3154 | * Store the entry point, if it exists | |
3155 | */ | |
3156 | if (Psect >= 0) | |
3157 | { | |
3158 | PUT_CHAR (Psect); | |
3159 | PUT_LONG (Offset); | |
3160 | } | |
3161 | /* Flush the record; this will be our final output. */ | |
3162 | Flush_VMS_Object_Record_Buffer (); | |
3163 | } | |
3164 | \f | |
3165 | ||
3166 | /* this hash routine borrowed from GNU-EMACS, and strengthened slightly ERY*/ | |
3167 | ||
3168 | static int | |
3169 | hash_string (ptr) | |
3170 | const char *ptr; | |
3171 | { | |
3172 | register const unsigned char *p = (unsigned char *) ptr; | |
3173 | register const unsigned char *end = p + strlen (ptr); | |
3174 | register unsigned char c; | |
3175 | register int hash = 0; | |
3176 | ||
3177 | while (p != end) | |
3178 | { | |
3179 | c = *p++; | |
3180 | hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); | |
3181 | } | |
3182 | return hash; | |
3183 | } | |
3184 | ||
3185 | /* | |
3186 | * Generate a Case-Hacked VMS symbol name (limited to 31 chars) | |
3187 | */ | |
3188 | static void | |
3189 | VMS_Case_Hack_Symbol (In, Out) | |
3190 | register const char *In; | |
3191 | register char *Out; | |
3192 | { | |
3193 | long int init; | |
3194 | long int result; | |
3195 | char *pnt = 0; | |
3196 | char *new_name; | |
3197 | const char *old_name; | |
3198 | register int i; | |
3199 | int destructor = 0; /*hack to allow for case sens in a destructor*/ | |
3200 | int truncate = 0; | |
3201 | int Case_Hack_Bits = 0; | |
3202 | int Saw_Dollar = 0; | |
3203 | static char Hex_Table[16] = | |
3204 | {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; | |
3205 | ||
3206 | /* | |
3207 | * Kill any leading "_" | |
3208 | */ | |
3209 | if ((In[0] == '_') && ((In[1] > '9') || (In[1] < '0'))) | |
3210 | In++; | |
3211 | ||
3212 | new_name = Out; /* save this for later*/ | |
3213 | ||
3214 | #if barfoo /* Dead code */ | |
3215 | if ((In[0] == '_') && (In[1] == '$') && (In[2] == '_')) | |
3216 | destructor = 1; | |
3217 | #endif | |
3218 | ||
3219 | /* We may need to truncate the symbol, save the hash for later*/ | |
3220 | result = (strlen (In) > 23) ? hash_string (In) : 0; | |
3221 | /* | |
3222 | * Is there a Psect Attribute to skip?? | |
3223 | */ | |
3224 | if (HAS_PSECT_ATTRIBUTES (In)) | |
3225 | { | |
3226 | /* | |
3227 | * Yes: Skip it | |
3228 | */ | |
3229 | In += PSECT_ATTRIBUTES_STRING_LENGTH; | |
3230 | while (*In) | |
3231 | { | |
3232 | if ((In[0] == '$') && (In[1] == '$')) | |
3233 | { | |
3234 | In += 2; | |
3235 | break; | |
3236 | } | |
3237 | In++; | |
3238 | } | |
3239 | } | |
3240 | ||
3241 | old_name = In; | |
3242 | /* if (strlen (In) > 31 && flag_hash_long_names) | |
3243 | as_tsktsk ("Symbol name truncated: %s\n", In); */ | |
3244 | /* | |
3245 | * Do the case conversion | |
3246 | */ | |
3247 | i = 23; /* Maximum of 23 chars */ | |
3248 | while (*In && (--i >= 0)) | |
3249 | { | |
3250 | Case_Hack_Bits <<= 1; | |
3251 | if (*In == '$') | |
3252 | Saw_Dollar = 1; | |
3253 | if ((destructor == 1) && (i == 21)) | |
3254 | Saw_Dollar = 0; | |
3255 | switch (vms_name_mapping) | |
3256 | { | |
3257 | case 0: | |
3882b010 | 3258 | if (ISUPPER (*In)) { |
252b5132 RH |
3259 | *Out++ = *In++; |
3260 | Case_Hack_Bits |= 1; | |
3261 | } else { | |
3882b010 | 3262 | *Out++ = TOUPPER (*In++); |
252b5132 RH |
3263 | } |
3264 | break; | |
3265 | case 3: *Out++ = *In++; | |
3266 | break; | |
3267 | case 2: | |
3882b010 | 3268 | if (ISLOWER (*In)) { |
252b5132 RH |
3269 | *Out++ = *In++; |
3270 | } else { | |
3882b010 | 3271 | *Out++ = TOLOWER (*In++); |
252b5132 RH |
3272 | } |
3273 | break; | |
3274 | } | |
3275 | } | |
3276 | /* | |
3277 | * If we saw a dollar sign, we don't do case hacking | |
3278 | */ | |
3279 | if (flag_no_hash_mixed_case || Saw_Dollar) | |
3280 | Case_Hack_Bits = 0; | |
3281 | ||
3282 | /* | |
3283 | * If we have more than 23 characters and everything is lowercase | |
3284 | * we can insert the full 31 characters | |
3285 | */ | |
3286 | if (*In) | |
3287 | { | |
3288 | /* | |
3289 | * We have more than 23 characters | |
3290 | * If we must add the case hack, then we have truncated the str | |
3291 | */ | |
3292 | pnt = Out; | |
3293 | truncate = 1; | |
3294 | if (Case_Hack_Bits == 0) | |
3295 | { | |
3296 | /* | |
3297 | * And so far they are all lower case: | |
3298 | * Check up to 8 more characters | |
3299 | * and ensure that they are lowercase | |
3300 | */ | |
3301 | for (i = 0; (In[i] != 0) && (i < 8); i++) | |
3882b010 | 3302 | if (ISUPPER (In[i]) && !Saw_Dollar && !flag_no_hash_mixed_case) |
252b5132 RH |
3303 | break; |
3304 | ||
3305 | if (In[i] == 0) | |
3306 | truncate = 0; | |
3307 | ||
3308 | if ((i == 8) || (In[i] == 0)) | |
3309 | { | |
3310 | /* | |
3311 | * They are: Copy up to 31 characters | |
3312 | * to the output string | |
3313 | */ | |
3314 | i = 8; | |
3315 | while ((--i >= 0) && (*In)) | |
3316 | switch (vms_name_mapping){ | |
3882b010 | 3317 | case 0: *Out++ = TOUPPER (*In++); |
252b5132 RH |
3318 | break; |
3319 | case 3: *Out++ = *In++; | |
3320 | break; | |
3882b010 | 3321 | case 2: *Out++ = TOLOWER (*In++); |
252b5132 RH |
3322 | break; |
3323 | } | |
3324 | } | |
3325 | } | |
3326 | } | |
3327 | /* | |
3328 | * If there were any uppercase characters in the name we | |
3329 | * take on the case hacking string | |
3330 | */ | |
3331 | ||
3332 | /* Old behavior for regular GNU-C compiler */ | |
3333 | if (!flag_hash_long_names) | |
3334 | truncate = 0; | |
3335 | if ((Case_Hack_Bits != 0) || (truncate == 1)) | |
3336 | { | |
3337 | if (truncate == 0) | |
3338 | { | |
3339 | *Out++ = '_'; | |
3340 | for (i = 0; i < 6; i++) | |
3341 | { | |
3342 | *Out++ = Hex_Table[Case_Hack_Bits & 0xf]; | |
3343 | Case_Hack_Bits >>= 4; | |
3344 | } | |
3345 | *Out++ = 'X'; | |
3346 | } | |
3347 | else | |
3348 | { | |
3349 | Out = pnt; /*Cut back to 23 characters maximum */ | |
3350 | *Out++ = '_'; | |
3351 | for (i = 0; i < 7; i++) | |
3352 | { | |
3353 | init = result & 0x01f; | |
3354 | *Out++ = (init < 10) ? ('0' + init) : ('A' + init - 10); | |
3355 | result = result >> 5; | |
3356 | } | |
3357 | } | |
3358 | } /*Case Hack */ | |
3359 | /* | |
3360 | * Done | |
3361 | */ | |
3362 | *Out = 0; | |
3363 | if (truncate == 1 && flag_hash_long_names && flag_show_after_trunc) | |
3364 | as_tsktsk (_("Symbol %s replaced by %s\n"), old_name, new_name); | |
3365 | } | |
3366 | \f | |
3367 | ||
3368 | /* | |
3369 | * Scan a symbol name for a psect attribute specification | |
3370 | */ | |
3371 | #define GLOBALSYMBOL_BIT 0x10000 | |
3372 | #define GLOBALVALUE_BIT 0x20000 | |
3373 | ||
252b5132 RH |
3374 | static void |
3375 | VMS_Modify_Psect_Attributes (Name, Attribute_Pointer) | |
3376 | const char *Name; | |
3377 | int *Attribute_Pointer; | |
3378 | { | |
3379 | register int i; | |
3380 | register const char *cp; | |
3381 | int Negate; | |
3382 | static const struct | |
3383 | { | |
3384 | const char *Name; | |
3385 | int Value; | |
3386 | } Attributes[] = | |
3387 | { | |
3388 | {"PIC", GPS_S_M_PIC}, | |
3389 | {"LIB", GPS_S_M_LIB}, | |
3390 | {"OVR", GPS_S_M_OVR}, | |
3391 | {"REL", GPS_S_M_REL}, | |
3392 | {"GBL", GPS_S_M_GBL}, | |
3393 | {"SHR", GPS_S_M_SHR}, | |
3394 | {"EXE", GPS_S_M_EXE}, | |
3395 | {"RD", GPS_S_M_RD}, | |
3396 | {"WRT", GPS_S_M_WRT}, | |
3397 | {"VEC", GPS_S_M_VEC}, | |
3398 | {"GLOBALSYMBOL", GLOBALSYMBOL_BIT}, | |
3399 | {"GLOBALVALUE", GLOBALVALUE_BIT}, | |
3400 | {0, 0} | |
3401 | }; | |
3402 | ||
3403 | /* | |
3404 | * Kill leading "_" | |
3405 | */ | |
3406 | if (*Name == '_') | |
3407 | Name++; | |
3408 | /* | |
3409 | * Check for a PSECT attribute list | |
3410 | */ | |
3411 | if (!HAS_PSECT_ATTRIBUTES (Name)) | |
3412 | return; /* If not, return */ | |
3413 | /* | |
3414 | * Skip the attribute list indicator | |
3415 | */ | |
3416 | Name += PSECT_ATTRIBUTES_STRING_LENGTH; | |
3417 | /* | |
3418 | * Process the attributes ("_" separated, "$" terminated) | |
3419 | */ | |
3420 | while (*Name != '$') | |
3421 | { | |
3422 | /* | |
3423 | * Assume not negating | |
3424 | */ | |
3425 | Negate = 0; | |
3426 | /* | |
3427 | * Check for "NO" | |
3428 | */ | |
3429 | if ((Name[0] == 'N') && (Name[1] == 'O')) | |
3430 | { | |
3431 | /* | |
3432 | * We are negating (and skip the NO) | |
3433 | */ | |
3434 | Negate = 1; | |
3435 | Name += 2; | |
3436 | } | |
3437 | /* | |
3438 | * Find the token delimiter | |
3439 | */ | |
3440 | cp = Name; | |
3441 | while (*cp && (*cp != '_') && (*cp != '$')) | |
3442 | cp++; | |
3443 | /* | |
3444 | * Look for the token in the attribute list | |
3445 | */ | |
3446 | for (i = 0; Attributes[i].Name; i++) | |
3447 | { | |
3448 | /* | |
3449 | * If the strings match, set/clear the attr. | |
3450 | */ | |
3451 | if (strncmp (Name, Attributes[i].Name, cp - Name) == 0) | |
3452 | { | |
3453 | /* | |
3454 | * Set or clear | |
3455 | */ | |
3456 | if (Negate) | |
3457 | *Attribute_Pointer &= | |
3458 | ~Attributes[i].Value; | |
3459 | else | |
3460 | *Attribute_Pointer |= | |
3461 | Attributes[i].Value; | |
3462 | /* | |
3463 | * Done | |
3464 | */ | |
3465 | break; | |
3466 | } | |
3467 | } | |
3468 | /* | |
3469 | * Now skip the attribute | |
3470 | */ | |
3471 | Name = cp; | |
3472 | if (*Name == '_') | |
3473 | Name++; | |
3474 | } | |
3475 | } | |
3476 | \f | |
3477 | ||
3478 | #define GBLSYM_REF 0 | |
3479 | #define GBLSYM_DEF 1 | |
3480 | #define GBLSYM_VAL 2 | |
bf514e21 | 3481 | #define GBLSYM_LCL 4 /* not GBL after all... */ |
252b5132 RH |
3482 | #define GBLSYM_WEAK 8 |
3483 | ||
3484 | /* | |
3485 | * Define a global symbol (or possibly a local one). | |
3486 | */ | |
3487 | static void | |
3488 | VMS_Global_Symbol_Spec (Name, Psect_Number, Psect_Offset, Flags) | |
3489 | const char *Name; | |
3490 | int Psect_Number; | |
3491 | int Psect_Offset; | |
3492 | int Flags; | |
3493 | { | |
3494 | char Local[32]; | |
3495 | ||
3496 | /* | |
3497 | * We are writing a GSD record | |
3498 | */ | |
3499 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3500 | /* | |
3501 | * If the buffer is empty we must insert the GSD record type | |
3502 | */ | |
3503 | if (Object_Record_Offset == 0) | |
3504 | PUT_CHAR (OBJ_S_C_GSD); | |
3505 | /* | |
3506 | * We are writing a Global (or local) symbol definition subrecord. | |
3507 | */ | |
3508 | PUT_CHAR ((Flags & GBLSYM_LCL) != 0 ? GSD_S_C_LSY : | |
3509 | ((unsigned) Psect_Number <= 255) ? GSD_S_C_SYM : GSD_S_C_SYMW); | |
3510 | /* | |
3511 | * Data type is undefined | |
3512 | */ | |
3513 | PUT_CHAR (0); | |
3514 | /* | |
3515 | * Switch on Definition/Reference | |
3516 | */ | |
3517 | if ((Flags & GBLSYM_DEF) == 0) | |
3518 | { | |
3519 | /* | |
3520 | * Reference | |
3521 | */ | |
3522 | PUT_SHORT (((Flags & GBLSYM_VAL) == 0) ? GSY_S_M_REL : 0); | |
3523 | if ((Flags & GBLSYM_LCL) != 0) /* local symbols have extra field */ | |
3524 | PUT_SHORT (Current_Environment); | |
3525 | } | |
3526 | else | |
3527 | { | |
3528 | int sym_flags; | |
3529 | ||
3530 | /* | |
3531 | * Definition | |
3532 | *[ assert (LSY_S_M_DEF == GSY_S_M_DEF && LSY_S_M_REL == GSY_S_M_REL); ] | |
3533 | */ | |
3534 | sym_flags = GSY_S_M_DEF; | |
3535 | if (Flags & GBLSYM_WEAK) | |
3536 | sym_flags |= GSY_S_M_WEAK; | |
3537 | if ((Flags & GBLSYM_VAL) == 0) | |
3538 | sym_flags |= GSY_S_M_REL; | |
3539 | PUT_SHORT (sym_flags); | |
3540 | if ((Flags & GBLSYM_LCL) != 0) /* local symbols have extra field */ | |
3541 | PUT_SHORT (Current_Environment); | |
3542 | /* | |
3543 | * Psect Number | |
3544 | */ | |
3545 | if ((Flags & GBLSYM_LCL) == 0 && (unsigned) Psect_Number <= 255) | |
3546 | PUT_CHAR (Psect_Number); | |
3547 | else | |
3548 | PUT_SHORT (Psect_Number); | |
3549 | /* | |
3550 | * Offset | |
3551 | */ | |
3552 | PUT_LONG (Psect_Offset); | |
3553 | } | |
3554 | /* | |
3555 | * Finally, the global symbol name | |
3556 | */ | |
3557 | VMS_Case_Hack_Symbol (Name, Local); | |
3558 | PUT_COUNTED_STRING (Local); | |
3559 | /* | |
3560 | * Flush the buffer if it is more than 75% full | |
3561 | */ | |
3562 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3563 | Flush_VMS_Object_Record_Buffer (); | |
3564 | } | |
3565 | ||
3566 | /* | |
3567 | * Define an environment to support local symbol references. | |
3568 | * This is just to mollify the linker; we don't actually do | |
3569 | * anything useful with it. | |
3570 | */ | |
3571 | static void | |
3572 | VMS_Local_Environment_Setup (Env_Name) | |
3573 | const char *Env_Name; | |
3574 | { | |
3575 | /* We are writing a GSD record. */ | |
3576 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3577 | /* If the buffer is empty we must insert the GSD record type. */ | |
3578 | if (Object_Record_Offset == 0) | |
3579 | PUT_CHAR (OBJ_S_C_GSD); | |
3580 | /* We are writing an ENV subrecord. */ | |
3581 | PUT_CHAR (GSD_S_C_ENV); | |
3582 | ||
3583 | ++Current_Environment; /* index of environment being defined */ | |
3584 | ||
3585 | /* ENV$W_FLAGS: we are defining the next environment. It's not nested. */ | |
3586 | PUT_SHORT (ENV_S_M_DEF); | |
3587 | /* ENV$W_ENVINDX: index is always 0 for non-nested definitions. */ | |
3588 | PUT_SHORT (0); | |
3589 | ||
3590 | /* ENV$B_NAMLNG + ENV$T_NAME: environment name in ASCIC format. */ | |
3591 | if (!Env_Name) Env_Name = ""; | |
3592 | PUT_COUNTED_STRING ((char *)Env_Name); | |
3593 | ||
3594 | /* Flush the buffer if it is more than 75% full. */ | |
3595 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3596 | Flush_VMS_Object_Record_Buffer (); | |
3597 | } | |
3598 | \f | |
3599 | ||
3600 | /* | |
3601 | * Define a psect | |
3602 | */ | |
3603 | static int | |
3604 | VMS_Psect_Spec (Name, Size, Type, vsp) | |
3605 | const char *Name; | |
3606 | int Size; | |
3607 | enum ps_type Type; | |
3608 | struct VMS_Symbol *vsp; | |
3609 | { | |
3610 | char Local[32]; | |
3611 | int Psect_Attributes; | |
3612 | ||
3613 | /* | |
3614 | * Generate the appropriate PSECT flags given the PSECT type | |
3615 | */ | |
3616 | switch (Type) | |
3617 | { | |
3618 | case ps_TEXT: | |
bf514e21 | 3619 | /* Text psects are PIC,noOVR,REL,noGBL,SHR,EXE,RD,noWRT. */ |
252b5132 RH |
3620 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE |
3621 | |GPS_S_M_RD); | |
3622 | break; | |
3623 | case ps_DATA: | |
bf514e21 | 3624 | /* Data psects are PIC,noOVR,REL,noGBL,noSHR,noEXE,RD,WRT. */ |
252b5132 RH |
3625 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT); |
3626 | break; | |
3627 | case ps_COMMON: | |
bf514e21 | 3628 | /* Common block psects are: PIC,OVR,REL,GBL,noSHR,noEXE,RD,WRT. */ |
252b5132 RH |
3629 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL |
3630 | |GPS_S_M_RD|GPS_S_M_WRT); | |
3631 | break; | |
3632 | case ps_CONST: | |
bf514e21 | 3633 | /* Const data psects are: PIC,OVR,REL,GBL,noSHR,noEXE,RD,noWRT. */ |
252b5132 RH |
3634 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL |
3635 | |GPS_S_M_RD); | |
3636 | break; | |
3637 | case ps_CTORS: | |
bf514e21 | 3638 | /* Ctor psects are PIC,noOVR,REL,GBL,noSHR,noEXE,RD,noWRT. */ |
252b5132 RH |
3639 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD); |
3640 | break; | |
3641 | case ps_DTORS: | |
bf514e21 | 3642 | /* Dtor psects are PIC,noOVR,REL,GBL,noSHR,noEXE,RD,noWRT. */ |
252b5132 RH |
3643 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_GBL|GPS_S_M_RD); |
3644 | break; | |
3645 | default: | |
3646 | /* impossible */ | |
3647 | error (_("Unknown VMS psect type (%ld)"), (long) Type); | |
3648 | break; | |
3649 | } | |
3650 | /* | |
3651 | * Modify the psect attributes according to any attribute string | |
3652 | */ | |
3653 | if (vsp && S_GET_TYPE (vsp->Symbol) == N_ABS) | |
3654 | Psect_Attributes |= GLOBALVALUE_BIT; | |
3655 | else if (HAS_PSECT_ATTRIBUTES (Name)) | |
3656 | VMS_Modify_Psect_Attributes (Name, &Psect_Attributes); | |
3657 | /* | |
3658 | * Check for globalref/def/val. | |
3659 | */ | |
3660 | if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) | |
3661 | { | |
3662 | /* | |
3663 | * globalvalue symbols were generated before. This code | |
3664 | * prevents unsightly psect buildup, and makes sure that | |
3665 | * fixup references are emitted correctly. | |
3666 | */ | |
3667 | vsp->Psect_Index = -1; /* to catch errors */ | |
3668 | S_SET_TYPE (vsp->Symbol, N_UNDF); /* make refs work */ | |
3669 | return 1; /* decrement psect counter */ | |
3670 | } | |
3671 | ||
3672 | if ((Psect_Attributes & GLOBALSYMBOL_BIT) != 0) | |
3673 | { | |
3674 | switch (S_GET_RAW_TYPE (vsp->Symbol)) | |
3675 | { | |
3676 | case N_UNDF | N_EXT: | |
3677 | VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, | |
3678 | vsp->Psect_Offset, GBLSYM_REF); | |
3679 | vsp->Psect_Index = -1; | |
3680 | S_SET_TYPE (vsp->Symbol, N_UNDF); | |
3681 | return 1; /* return and indicate no psect */ | |
3682 | case N_DATA | N_EXT: | |
3683 | VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, | |
3684 | vsp->Psect_Offset, GBLSYM_DEF); | |
3685 | /* In this case we still generate the psect */ | |
3686 | break; | |
3687 | default: | |
3688 | as_fatal (_("Globalsymbol attribute for symbol %s was unexpected."), | |
3689 | Name); | |
3690 | break; | |
3691 | } /* switch */ | |
3692 | } | |
3693 | ||
3694 | Psect_Attributes &= 0xffff; /* clear out the globalref/def stuff */ | |
3695 | /* | |
3696 | * We are writing a GSD record | |
3697 | */ | |
3698 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3699 | /* | |
3700 | * If the buffer is empty we must insert the GSD record type | |
3701 | */ | |
3702 | if (Object_Record_Offset == 0) | |
3703 | PUT_CHAR (OBJ_S_C_GSD); | |
3704 | /* | |
3705 | * We are writing a PSECT definition subrecord | |
3706 | */ | |
3707 | PUT_CHAR (GSD_S_C_PSC); | |
3708 | /* | |
3709 | * Psects are always LONGWORD aligned | |
3710 | */ | |
3711 | PUT_CHAR (2); | |
3712 | /* | |
3713 | * Specify the psect attributes | |
3714 | */ | |
3715 | PUT_SHORT (Psect_Attributes); | |
3716 | /* | |
3717 | * Specify the allocation | |
3718 | */ | |
3719 | PUT_LONG (Size); | |
3720 | /* | |
3721 | * Finally, the psect name | |
3722 | */ | |
3723 | VMS_Case_Hack_Symbol (Name, Local); | |
3724 | PUT_COUNTED_STRING (Local); | |
3725 | /* | |
3726 | * Flush the buffer if it is more than 75% full | |
3727 | */ | |
3728 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3729 | Flush_VMS_Object_Record_Buffer (); | |
3730 | return 0; | |
3731 | } | |
3732 | \f | |
3733 | ||
3734 | /* Given the pointer to a symbol we calculate how big the data at the | |
3735 | symbol is. We do this by looking for the next symbol (local or global) | |
3736 | which will indicate the start of another datum. */ | |
3737 | ||
3738 | static offsetT | |
3739 | VMS_Initialized_Data_Size (s0P, End_Of_Data) | |
3740 | register symbolS *s0P; | |
3741 | unsigned End_Of_Data; | |
3742 | { | |
3743 | symbolS *s1P; | |
3744 | valueT s0P_val = S_GET_VALUE (s0P), s1P_val, | |
3745 | nearest_val = (valueT) End_Of_Data; | |
3746 | ||
3747 | /* Find the nearest symbol what follows this one. */ | |
3748 | for (s1P = symbol_rootP; s1P; s1P = symbol_next (s1P)) | |
3749 | { | |
3750 | /* The data type must match. */ | |
3751 | if (S_GET_TYPE (s1P) != N_DATA) | |
3752 | continue; | |
3753 | s1P_val = S_GET_VALUE (s1P); | |
3754 | if (s1P_val > s0P_val && s1P_val < nearest_val) | |
3755 | nearest_val = s1P_val; | |
3756 | } | |
3757 | /* Calculate its size. */ | |
3758 | return (offsetT) (nearest_val - s0P_val); | |
3759 | } | |
3760 | ||
252b5132 RH |
3761 | /* Check symbol names for the Psect hack with a globalvalue, and then |
3762 | generate globalvalues for those that have it. */ | |
3763 | ||
3764 | static void | |
3765 | VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment) | |
3766 | unsigned text_siz; | |
3767 | unsigned data_siz; | |
3768 | char *Data_Segment; | |
3769 | { | |
3770 | register symbolS *sp; | |
3771 | char *stripped_name, *Name; | |
3772 | int Size; | |
3773 | int Psect_Attributes; | |
3774 | int globalvalue; | |
3775 | int typ, abstyp; | |
3776 | ||
3777 | /* | |
3778 | * Scan the symbol table for globalvalues, and emit def/ref when | |
3779 | * required. These will be caught again later and converted to | |
3780 | * N_UNDF | |
3781 | */ | |
3782 | for (sp = symbol_rootP; sp; sp = sp->sy_next) | |
3783 | { | |
3784 | typ = S_GET_RAW_TYPE (sp); | |
3785 | abstyp = ((typ & ~N_EXT) == N_ABS); | |
3786 | /* | |
3787 | * See if this is something we want to look at. | |
3788 | */ | |
3789 | if (!abstyp && | |
3790 | typ != (N_DATA | N_EXT) && | |
3791 | typ != (N_UNDF | N_EXT)) | |
3792 | continue; | |
3793 | /* | |
3794 | * See if this has globalvalue specification. | |
3795 | */ | |
3796 | Name = S_GET_NAME (sp); | |
3797 | ||
3798 | if (abstyp) | |
3799 | { | |
3800 | stripped_name = 0; | |
3801 | Psect_Attributes = GLOBALVALUE_BIT; | |
3802 | } | |
3803 | else if (HAS_PSECT_ATTRIBUTES (Name)) | |
3804 | { | |
3805 | stripped_name = (char *) xmalloc (strlen (Name) + 1); | |
3806 | strcpy (stripped_name, Name); | |
3807 | Psect_Attributes = 0; | |
3808 | VMS_Modify_Psect_Attributes (stripped_name, &Psect_Attributes); | |
3809 | } | |
3810 | else | |
3811 | continue; | |
3812 | ||
3813 | if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) | |
3814 | { | |
3815 | switch (typ) | |
3816 | { | |
3817 | case N_ABS: | |
3818 | /* Local symbol references will want | |
3819 | to have an environment defined. */ | |
3820 | if (Current_Environment < 0) | |
3821 | VMS_Local_Environment_Setup (".N_ABS"); | |
3822 | VMS_Global_Symbol_Spec (Name, 0, | |
3823 | S_GET_VALUE (sp), | |
3824 | GBLSYM_DEF|GBLSYM_VAL|GBLSYM_LCL); | |
3825 | break; | |
3826 | case N_ABS | N_EXT: | |
3827 | VMS_Global_Symbol_Spec (Name, 0, | |
3828 | S_GET_VALUE (sp), | |
3829 | GBLSYM_DEF|GBLSYM_VAL); | |
3830 | break; | |
3831 | case N_UNDF | N_EXT: | |
3832 | VMS_Global_Symbol_Spec (stripped_name, 0, 0, GBLSYM_VAL); | |
3833 | break; | |
3834 | case N_DATA | N_EXT: | |
3835 | Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); | |
3836 | if (Size > 4) | |
3837 | error (_("Invalid data type for globalvalue")); | |
bf514e21 | 3838 | globalvalue = md_chars_to_number (Data_Segment + |
252b5132 RH |
3839 | S_GET_VALUE (sp) - text_siz , Size); |
3840 | /* Three times for good luck. The linker seems to get confused | |
3841 | if there are fewer than three */ | |
3842 | VMS_Global_Symbol_Spec (stripped_name, 0, 0, GBLSYM_VAL); | |
3843 | VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, | |
3844 | GBLSYM_DEF|GBLSYM_VAL); | |
3845 | VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, | |
3846 | GBLSYM_DEF|GBLSYM_VAL); | |
3847 | break; | |
3848 | default: | |
3849 | as_warn (_("Invalid globalvalue of %s"), stripped_name); | |
3850 | break; | |
3851 | } /* switch */ | |
3852 | } /* if */ | |
3853 | if (stripped_name) free (stripped_name); /* clean up */ | |
3854 | } /* for */ | |
3855 | ||
3856 | } | |
3857 | \f | |
3858 | ||
3859 | /* | |
3860 | * Define a procedure entry pt/mask | |
3861 | */ | |
3862 | static void | |
3863 | VMS_Procedure_Entry_Pt (Name, Psect_Number, Psect_Offset, Entry_Mask) | |
3864 | char *Name; | |
3865 | int Psect_Number; | |
3866 | int Psect_Offset; | |
3867 | int Entry_Mask; | |
3868 | { | |
3869 | char Local[32]; | |
3870 | ||
3871 | /* | |
3872 | * We are writing a GSD record | |
3873 | */ | |
3874 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3875 | /* | |
3876 | * If the buffer is empty we must insert the GSD record type | |
3877 | */ | |
3878 | if (Object_Record_Offset == 0) | |
3879 | PUT_CHAR (OBJ_S_C_GSD); | |
3880 | /* | |
3881 | * We are writing a Procedure Entry Pt/Mask subrecord | |
3882 | */ | |
3883 | PUT_CHAR (((unsigned) Psect_Number <= 255) ? GSD_S_C_EPM : GSD_S_C_EPMW); | |
3884 | /* | |
3885 | * Data type is undefined | |
3886 | */ | |
3887 | PUT_CHAR (0); | |
3888 | /* | |
3889 | * Flags = "RELOCATABLE" and "DEFINED" | |
3890 | */ | |
3891 | PUT_SHORT (GSY_S_M_DEF | GSY_S_M_REL); | |
3892 | /* | |
3893 | * Psect Number | |
3894 | */ | |
3895 | if ((unsigned) Psect_Number <= 255) | |
3896 | PUT_CHAR (Psect_Number); | |
3897 | else | |
3898 | PUT_SHORT (Psect_Number); | |
3899 | /* | |
3900 | * Offset | |
3901 | */ | |
3902 | PUT_LONG (Psect_Offset); | |
3903 | /* | |
3904 | * Entry mask | |
3905 | */ | |
3906 | PUT_SHORT (Entry_Mask); | |
3907 | /* | |
3908 | * Finally, the global symbol name | |
3909 | */ | |
3910 | VMS_Case_Hack_Symbol (Name, Local); | |
3911 | PUT_COUNTED_STRING (Local); | |
3912 | /* | |
3913 | * Flush the buffer if it is more than 75% full | |
3914 | */ | |
3915 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3916 | Flush_VMS_Object_Record_Buffer (); | |
3917 | } | |
3918 | \f | |
3919 | ||
3920 | /* | |
3921 | * Set the current location counter to a particular Psect and Offset | |
3922 | */ | |
3923 | static void | |
3924 | VMS_Set_Psect (Psect_Index, Offset, Record_Type) | |
3925 | int Psect_Index; | |
3926 | int Offset; | |
3927 | int Record_Type; | |
3928 | { | |
3929 | /* | |
3930 | * We are writing a "Record_Type" record | |
3931 | */ | |
3932 | Set_VMS_Object_File_Record (Record_Type); | |
3933 | /* | |
3934 | * If the buffer is empty we must insert the record type | |
3935 | */ | |
3936 | if (Object_Record_Offset == 0) | |
3937 | PUT_CHAR (Record_Type); | |
3938 | /* | |
3939 | * Stack the Psect base + Offset | |
3940 | */ | |
3941 | vms_tir_stack_psect (Psect_Index, Offset, 0); | |
3942 | /* | |
3943 | * Set relocation base | |
3944 | */ | |
3945 | PUT_CHAR (TIR_S_C_CTL_SETRB); | |
3946 | /* | |
3947 | * Flush the buffer if it is more than 75% full | |
3948 | */ | |
3949 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
3950 | Flush_VMS_Object_Record_Buffer (); | |
3951 | } | |
3952 | \f | |
3953 | ||
3954 | /* | |
3955 | * Store repeated immediate data in current Psect | |
3956 | */ | |
3957 | static void | |
3958 | VMS_Store_Repeated_Data (Repeat_Count, Pointer, Size, Record_Type) | |
3959 | int Repeat_Count; | |
3960 | register char *Pointer; | |
3961 | int Size; | |
3962 | int Record_Type; | |
3963 | { | |
3964 | ||
3965 | /* | |
3966 | * Ignore zero bytes/words/longwords | |
3967 | */ | |
3968 | switch (Size) | |
3969 | { | |
3970 | case 4: | |
3971 | if (Pointer[3] != 0 || Pointer[2] != 0) break; | |
3972 | /* else FALLTHRU */ | |
3973 | case 2: | |
3974 | if (Pointer[1] != 0) break; | |
3975 | /* else FALLTHRU */ | |
3976 | case 1: | |
3977 | if (Pointer[0] != 0) break; | |
3978 | /* zero value */ | |
3979 | return; | |
3980 | default: | |
3981 | break; | |
3982 | } | |
3983 | /* | |
3984 | * If the data is too big for a TIR_S_C_STO_RIVB sub-record | |
3985 | * then we do it manually | |
3986 | */ | |
3987 | if (Size > 255) | |
3988 | { | |
3989 | while (--Repeat_Count >= 0) | |
3990 | VMS_Store_Immediate_Data (Pointer, Size, Record_Type); | |
3991 | return; | |
3992 | } | |
3993 | /* | |
3994 | * We are writing a "Record_Type" record | |
3995 | */ | |
3996 | Set_VMS_Object_File_Record (Record_Type); | |
3997 | /* | |
3998 | * If the buffer is empty we must insert record type | |
3999 | */ | |
4000 | if (Object_Record_Offset == 0) | |
4001 | PUT_CHAR (Record_Type); | |
4002 | /* | |
4003 | * Stack the repeat count | |
4004 | */ | |
4005 | PUT_CHAR (TIR_S_C_STA_LW); | |
4006 | PUT_LONG (Repeat_Count); | |
4007 | /* | |
4008 | * And now the command and its data | |
4009 | */ | |
4010 | PUT_CHAR (TIR_S_C_STO_RIVB); | |
4011 | PUT_CHAR (Size); | |
4012 | while (--Size >= 0) | |
4013 | PUT_CHAR (*Pointer++); | |
4014 | /* | |
4015 | * Flush the buffer if it is more than 75% full | |
4016 | */ | |
4017 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4018 | Flush_VMS_Object_Record_Buffer (); | |
4019 | } | |
4020 | \f | |
4021 | ||
4022 | /* | |
4023 | * Store a Position Independent Reference | |
4024 | */ | |
4025 | static void | |
4026 | VMS_Store_PIC_Symbol_Reference (Symbol, Offset, PC_Relative, | |
4027 | Psect, Psect_Offset, Record_Type) | |
4028 | symbolS *Symbol; | |
4029 | int Offset; | |
4030 | int PC_Relative; | |
4031 | int Psect; | |
4032 | int Psect_Offset; | |
4033 | int Record_Type; | |
4034 | { | |
4035 | register struct VMS_Symbol *vsp = Symbol->sy_obj; | |
4036 | char Local[32]; | |
4037 | int local_sym = 0; | |
4038 | ||
4039 | /* | |
4040 | * We are writing a "Record_Type" record | |
4041 | */ | |
4042 | Set_VMS_Object_File_Record (Record_Type); | |
4043 | /* | |
4044 | * If the buffer is empty we must insert record type | |
4045 | */ | |
4046 | if (Object_Record_Offset == 0) | |
4047 | PUT_CHAR (Record_Type); | |
4048 | /* | |
4049 | * Set to the appropriate offset in the Psect. | |
4050 | * For a Code reference we need to fix the operand | |
4051 | * specifier as well, so back up 1 byte; | |
4052 | * for a Data reference we just store HERE. | |
4053 | */ | |
4054 | VMS_Set_Psect (Psect, | |
4055 | PC_Relative ? Psect_Offset - 1 : Psect_Offset, | |
4056 | Record_Type); | |
4057 | /* | |
4058 | * Make sure we are still generating a "Record Type" record | |
4059 | */ | |
4060 | if (Object_Record_Offset == 0) | |
4061 | PUT_CHAR (Record_Type); | |
4062 | /* | |
4063 | * Dispatch on symbol type (so we can stack its value) | |
4064 | */ | |
4065 | switch (S_GET_RAW_TYPE (Symbol)) | |
4066 | { | |
4067 | /* | |
4068 | * Global symbol | |
4069 | */ | |
4070 | case N_ABS: | |
4071 | local_sym = 1; | |
4072 | /*FALLTHRU*/ | |
4073 | case N_ABS | N_EXT: | |
4074 | #ifdef NOT_VAX_11_C_COMPATIBLE | |
4075 | case N_UNDF | N_EXT: | |
4076 | case N_DATA | N_EXT: | |
4077 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4078 | case N_UNDF: | |
4079 | case N_TEXT | N_EXT: | |
4080 | /* | |
4081 | * Get the symbol name (case hacked) | |
4082 | */ | |
4083 | VMS_Case_Hack_Symbol (S_GET_NAME (Symbol), Local); | |
4084 | /* | |
4085 | * Stack the global symbol value | |
4086 | */ | |
4087 | if (!local_sym) | |
4088 | { | |
4089 | PUT_CHAR (TIR_S_C_STA_GBL); | |
4090 | } | |
4091 | else | |
4092 | { | |
4093 | /* Local symbols have an extra field. */ | |
4094 | PUT_CHAR (TIR_S_C_STA_LSY); | |
4095 | PUT_SHORT (Current_Environment); | |
4096 | } | |
4097 | PUT_COUNTED_STRING (Local); | |
4098 | if (Offset) | |
4099 | { | |
4100 | /* | |
4101 | * Stack the longword offset | |
4102 | */ | |
4103 | PUT_CHAR (TIR_S_C_STA_LW); | |
4104 | PUT_LONG (Offset); | |
4105 | /* | |
4106 | * Add the two, leaving the result on the stack | |
4107 | */ | |
4108 | PUT_CHAR (TIR_S_C_OPR_ADD); | |
4109 | } | |
4110 | break; | |
4111 | /* | |
4112 | * Uninitialized local data | |
4113 | */ | |
4114 | case N_BSS: | |
4115 | /* | |
4116 | * Stack the Psect (+offset) | |
4117 | */ | |
4118 | vms_tir_stack_psect (vsp->Psect_Index, | |
4119 | vsp->Psect_Offset + Offset, | |
4120 | 0); | |
4121 | break; | |
4122 | /* | |
4123 | * Local text | |
4124 | */ | |
4125 | case N_TEXT: | |
4126 | /* | |
4127 | * Stack the Psect (+offset) | |
4128 | */ | |
4129 | vms_tir_stack_psect (vsp->Psect_Index, | |
4130 | S_GET_VALUE (Symbol) + Offset, | |
4131 | 0); | |
4132 | break; | |
4133 | /* | |
4134 | * Initialized local or global data | |
4135 | */ | |
4136 | case N_DATA: | |
4137 | #ifndef NOT_VAX_11_C_COMPATIBLE | |
4138 | case N_UNDF | N_EXT: | |
4139 | case N_DATA | N_EXT: | |
4140 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4141 | /* | |
4142 | * Stack the Psect (+offset) | |
4143 | */ | |
4144 | vms_tir_stack_psect (vsp->Psect_Index, | |
4145 | vsp->Psect_Offset + Offset, | |
4146 | 0); | |
4147 | break; | |
4148 | } | |
4149 | /* | |
4150 | * Store either a code or data reference | |
4151 | */ | |
4152 | PUT_CHAR (PC_Relative ? TIR_S_C_STO_PICR : TIR_S_C_STO_PIDR); | |
4153 | /* | |
4154 | * Flush the buffer if it is more than 75% full | |
4155 | */ | |
4156 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4157 | Flush_VMS_Object_Record_Buffer (); | |
4158 | } | |
4159 | \f | |
4160 | ||
4161 | /* | |
4162 | * Check in the text area for an indirect pc-relative reference | |
4163 | * and fix it up with addressing mode 0xff [PC indirect] | |
4164 | * | |
4165 | * THIS SHOULD BE REPLACED BY THE USE OF TIR_S_C_STO_PIRR IN THE | |
4166 | * PIC CODE GENERATING FIXUP ROUTINE. | |
4167 | */ | |
4168 | static void | |
4169 | VMS_Fix_Indirect_Reference (Text_Psect, Offset, fragP, text_frag_root) | |
4170 | int Text_Psect; | |
4171 | int Offset; | |
4172 | register fragS *fragP; | |
4173 | fragS *text_frag_root; | |
4174 | { | |
4175 | /* | |
4176 | * The addressing mode byte is 1 byte before the address | |
4177 | */ | |
4178 | Offset--; | |
4179 | /* | |
4180 | * Is it in THIS frag?? | |
4181 | */ | |
4182 | if ((Offset < fragP->fr_address) || | |
4183 | (Offset >= (fragP->fr_address + fragP->fr_fix))) | |
4184 | { | |
4185 | /* | |
4186 | * We need to search for the fragment containing this | |
4187 | * Offset | |
4188 | */ | |
4189 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
4190 | { | |
4191 | if ((Offset >= fragP->fr_address) && | |
4192 | (Offset < (fragP->fr_address + fragP->fr_fix))) | |
4193 | break; | |
4194 | } | |
4195 | /* | |
4196 | * If we couldn't find the frag, things are BAD!! | |
4197 | */ | |
4198 | if (fragP == 0) | |
4199 | error (_("Couldn't find fixup fragment when checking for indirect reference")); | |
4200 | } | |
4201 | /* | |
4202 | * Check for indirect PC relative addressing mode | |
4203 | */ | |
4204 | if (fragP->fr_literal[Offset - fragP->fr_address] == (char) 0xff) | |
4205 | { | |
4206 | static char Address_Mode = (char) 0xff; | |
4207 | ||
4208 | /* | |
4209 | * Yes: Store the indirect mode back into the image | |
4210 | * to fix up the damage done by STO_PICR | |
4211 | */ | |
4212 | VMS_Set_Psect (Text_Psect, Offset, OBJ_S_C_TIR); | |
4213 | VMS_Store_Immediate_Data (&Address_Mode, 1, OBJ_S_C_TIR); | |
4214 | } | |
4215 | } | |
4216 | \f | |
4217 | ||
4218 | /* | |
4219 | * If the procedure "main()" exists we have to add the instruction | |
4220 | * "jsb c$main_args" at the beginning to be compatible with VAX-11 "C". | |
4221 | * | |
4222 | * FIXME: the macro name `HACK_DEC_C_STARTUP' should be renamed | |
4223 | * to `HACK_VAXCRTL_STARTUP' because Digital's compiler | |
4224 | * named "DEC C" uses run-time library "DECC$SHR", but this | |
4225 | * startup code is for "VAXCRTL", the library for Digital's | |
4226 | * older "VAX C". Also, this extra code isn't needed for | |
4227 | * supporting gcc because it already generates the VAXCRTL | |
4228 | * startup call when compiling main(). The reference to | |
4229 | * `flag_hash_long_names' looks very suspicious too; | |
4230 | * probably an old-style command line option was inadvertently | |
4231 | * overloaded here, then blindly converted into the new one. | |
4232 | */ | |
4233 | void | |
4234 | vms_check_for_main () | |
4235 | { | |
4236 | register symbolS *symbolP; | |
4237 | #ifdef HACK_DEC_C_STARTUP /* JF */ | |
4238 | register struct frchain *frchainP; | |
4239 | register fragS *fragP; | |
4240 | register fragS **prev_fragPP; | |
4241 | register struct fix *fixP; | |
4242 | register fragS *New_Frag; | |
4243 | int i; | |
4244 | #endif /* HACK_DEC_C_STARTUP */ | |
4245 | ||
4246 | symbolP = (symbolS *) symbol_find ("_main"); | |
4247 | if (symbolP && !S_IS_DEBUG (symbolP) && | |
4248 | S_IS_EXTERNAL (symbolP) && (S_GET_TYPE (symbolP) == N_TEXT)) | |
4249 | { | |
4250 | #ifdef HACK_DEC_C_STARTUP | |
4251 | if (!flag_hash_long_names) | |
4252 | { | |
4253 | #endif | |
4254 | /* | |
4255 | * Remember the entry point symbol | |
4256 | */ | |
4257 | Entry_Point_Symbol = symbolP; | |
4258 | #ifdef HACK_DEC_C_STARTUP | |
4259 | } | |
4260 | else | |
4261 | { | |
4262 | /* | |
4263 | * Scan all the fragment chains for the one with "_main" | |
4264 | * (Actually we know the fragment from the symbol, but we need | |
4265 | * the previous fragment so we can change its pointer) | |
4266 | */ | |
4267 | frchainP = frchain_root; | |
4268 | while (frchainP) | |
4269 | { | |
4270 | /* | |
4271 | * Scan all the fragments in this chain, remembering | |
4272 | * the "previous fragment" | |
4273 | */ | |
4274 | prev_fragPP = &frchainP->frch_root; | |
4275 | fragP = frchainP->frch_root; | |
4276 | while (fragP && (fragP != frchainP->frch_last)) | |
4277 | { | |
4278 | /* | |
4279 | * Is this the fragment? | |
4280 | */ | |
4281 | if (fragP == symbolP->sy_frag) | |
4282 | { | |
4283 | /* | |
4284 | * Yes: Modify the fragment by replacing | |
4285 | * it with a new fragment. | |
4286 | */ | |
4287 | New_Frag = (fragS *) | |
4288 | xmalloc (sizeof (*New_Frag) + | |
4289 | fragP->fr_fix + | |
4290 | fragP->fr_var + | |
4291 | 5); | |
4292 | /* | |
4293 | * The fragments are the same except | |
4294 | * that the "fixed" area is larger | |
4295 | */ | |
4296 | *New_Frag = *fragP; | |
4297 | New_Frag->fr_fix += 6; | |
4298 | /* | |
4299 | * Copy the literal data opening a hole | |
4300 | * 2 bytes after "_main" (i.e. just after | |
4301 | * the entry mask). Into which we place | |
4302 | * the JSB instruction. | |
4303 | */ | |
4304 | New_Frag->fr_literal[0] = fragP->fr_literal[0]; | |
4305 | New_Frag->fr_literal[1] = fragP->fr_literal[1]; | |
4306 | New_Frag->fr_literal[2] = 0x16; /* Jsb */ | |
4307 | New_Frag->fr_literal[3] = 0xef; | |
4308 | New_Frag->fr_literal[4] = 0; | |
4309 | New_Frag->fr_literal[5] = 0; | |
4310 | New_Frag->fr_literal[6] = 0; | |
4311 | New_Frag->fr_literal[7] = 0; | |
4312 | for (i = 2; i < fragP->fr_fix + fragP->fr_var; i++) | |
4313 | New_Frag->fr_literal[i + 6] = | |
4314 | fragP->fr_literal[i]; | |
4315 | /* | |
4316 | * Now replace the old fragment with the | |
4317 | * newly generated one. | |
4318 | */ | |
4319 | *prev_fragPP = New_Frag; | |
4320 | /* | |
4321 | * Remember the entry point symbol | |
4322 | */ | |
4323 | Entry_Point_Symbol = symbolP; | |
4324 | /* | |
4325 | * Scan the text area fixup structures | |
4326 | * as offsets in the fragment may have | |
4327 | * changed | |
4328 | */ | |
4329 | for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) | |
4330 | { | |
4331 | /* | |
4332 | * Look for references to this | |
4333 | * fragment. | |
4334 | */ | |
4335 | if (fixP->fx_frag == fragP) | |
4336 | { | |
4337 | /* | |
4338 | * Change the fragment | |
4339 | * pointer | |
4340 | */ | |
4341 | fixP->fx_frag = New_Frag; | |
4342 | /* | |
4343 | * If the offset is after | |
4344 | * the entry mask we need | |
4345 | * to account for the JSB | |
4346 | * instruction we just | |
4347 | * inserted. | |
4348 | */ | |
4349 | if (fixP->fx_where >= 2) | |
4350 | fixP->fx_where += 6; | |
4351 | } | |
4352 | } | |
4353 | /* | |
4354 | * Scan the symbols as offsets in the | |
4355 | * fragment may have changed | |
4356 | */ | |
4357 | for (symbolP = symbol_rootP; | |
4358 | symbolP; | |
4359 | symbolP = symbol_next (symbolP)) | |
4360 | { | |
4361 | /* | |
4362 | * Look for references to this | |
4363 | * fragment. | |
4364 | */ | |
4365 | if (symbolP->sy_frag == fragP) | |
4366 | { | |
4367 | /* | |
4368 | * Change the fragment | |
4369 | * pointer | |
4370 | */ | |
4371 | symbolP->sy_frag = New_Frag; | |
4372 | /* | |
4373 | * If the offset is after | |
4374 | * the entry mask we need | |
4375 | * to account for the JSB | |
4376 | * instruction we just | |
4377 | * inserted. | |
4378 | */ | |
4379 | if (S_GET_VALUE (symbolP) >= 2) | |
4380 | S_SET_VALUE (symbolP, | |
4381 | S_GET_VALUE (symbolP) + 6); | |
4382 | } | |
4383 | } | |
4384 | /* | |
4385 | * Make a symbol reference to | |
4386 | * "_c$main_args" so we can get | |
4387 | * its address inserted into the | |
4388 | * JSB instruction. | |
4389 | */ | |
4390 | symbolP = (symbolS *) xmalloc (sizeof (*symbolP)); | |
4391 | S_SET_NAME (symbolP, "_C$MAIN_ARGS"); | |
4392 | S_SET_TYPE (symbolP, N_UNDF); | |
4393 | S_SET_OTHER (symbolP, 0); | |
4394 | S_SET_DESC (symbolP, 0); | |
4395 | S_SET_VALUE (symbolP, 0); | |
4396 | symbolP->sy_name_offset = 0; | |
4397 | symbolP->sy_number = 0; | |
4398 | symbolP->sy_obj = 0; | |
4399 | symbolP->sy_frag = New_Frag; | |
4400 | symbolP->sy_resolved = 0; | |
4401 | symbolP->sy_resolving = 0; | |
4402 | /* this actually inserts at the beginning of the list */ | |
4403 | symbol_append (symbol_rootP, symbolP, | |
4404 | &symbol_rootP, &symbol_lastP); | |
4405 | ||
4406 | symbol_rootP = symbolP; | |
4407 | /* | |
4408 | * Generate a text fixup structure | |
4409 | * to get "_c$main_args" stored into the | |
4410 | * JSB instruction. | |
4411 | */ | |
4412 | fixP = (struct fix *) xmalloc (sizeof (*fixP)); | |
4413 | fixP->fx_frag = New_Frag; | |
4414 | fixP->fx_where = 4; | |
4415 | fixP->fx_addsy = symbolP; | |
4416 | fixP->fx_subsy = 0; | |
4417 | fixP->fx_offset = 0; | |
4418 | fixP->fx_size = 4; | |
4419 | fixP->fx_pcrel = 1; | |
4420 | fixP->fx_next = text_fix_root; | |
4421 | text_fix_root = fixP; | |
4422 | /* | |
4423 | * Now make sure we exit from the loop | |
4424 | */ | |
4425 | frchainP = 0; | |
4426 | break; | |
4427 | } | |
4428 | /* | |
4429 | * Try the next fragment | |
4430 | */ | |
4431 | prev_fragPP = &fragP->fr_next; | |
4432 | fragP = fragP->fr_next; | |
4433 | } | |
4434 | /* | |
4435 | * Try the next fragment chain | |
4436 | */ | |
4437 | if (frchainP) | |
4438 | frchainP = frchainP->frch_next; | |
4439 | } | |
4440 | } | |
4441 | #endif /* HACK_DEC_C_STARTUP */ | |
4442 | } | |
4443 | } | |
4444 | \f | |
4445 | ||
4446 | /* | |
4447 | * Beginning of vms_write_object_file(). | |
4448 | */ | |
4449 | ||
4450 | static | |
4451 | struct vms_obj_state { | |
4452 | ||
4453 | /* Next program section index to use. */ | |
4454 | int psect_number; | |
4455 | ||
4456 | /* Psect index for code. Always ends up #0. */ | |
4457 | int text_psect; | |
4458 | ||
4459 | /* Psect index for initialized static variables. */ | |
4460 | int data_psect; | |
4461 | ||
4462 | /* Psect index for uninitialized static variables. */ | |
4463 | int bss_psect; | |
4464 | ||
4465 | /* Psect index for static constructors. */ | |
4466 | int ctors_psect; | |
4467 | ||
4468 | /* Psect index for static destructors. */ | |
4469 | int dtors_psect; | |
4470 | ||
4471 | /* Number of bytes used for local symbol data. */ | |
4472 | int local_initd_data_size; | |
4473 | ||
4474 | /* Dynamic buffer for initialized data. */ | |
4475 | char *data_segment; | |
4476 | ||
4477 | } vms_obj_state; | |
4478 | ||
4479 | #define Psect_Number vms_obj_state.psect_number | |
4480 | #define Text_Psect vms_obj_state.text_psect | |
4481 | #define Data_Psect vms_obj_state.data_psect | |
4482 | #define Bss_Psect vms_obj_state.bss_psect | |
4483 | #define Ctors_Psect vms_obj_state.ctors_psect | |
4484 | #define Dtors_Psect vms_obj_state.dtors_psect | |
4485 | #define Local_Initd_Data_Size vms_obj_state.local_initd_data_size | |
4486 | #define Data_Segment vms_obj_state.data_segment | |
4487 | ||
252b5132 RH |
4488 | #define IS_GXX_VTABLE(symP) (strncmp (S_GET_NAME (symP), "__vt.", 5) == 0) |
4489 | #define IS_GXX_XTOR(symP) (strncmp (S_GET_NAME (symP), "__GLOBAL_.", 10) == 0) | |
4490 | #define XTOR_SIZE 4 | |
4491 | \f | |
4492 | ||
4493 | /* Perform text segment fixups. */ | |
4494 | ||
4495 | static void | |
4496 | vms_fixup_text_section (text_siz, text_frag_root, data_frag_root) | |
4497 | unsigned text_siz; | |
4498 | struct frag *text_frag_root; | |
4499 | struct frag *data_frag_root; | |
4500 | { | |
4501 | register fragS *fragP; | |
4502 | register struct fix *fixP; | |
4503 | offsetT dif; | |
4504 | ||
4505 | /* Scan the text fragments. */ | |
4506 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
4507 | { | |
4508 | /* Stop if we get to the data fragments. */ | |
4509 | if (fragP == data_frag_root) | |
4510 | break; | |
4511 | /* Ignore fragments with no data. */ | |
4512 | if ((fragP->fr_fix == 0) && (fragP->fr_var == 0)) | |
4513 | continue; | |
4514 | /* Go the the appropriate offset in the Text Psect. */ | |
4515 | VMS_Set_Psect (Text_Psect, fragP->fr_address, OBJ_S_C_TIR); | |
4516 | /* Store the "fixed" part. */ | |
4517 | if (fragP->fr_fix) | |
4518 | VMS_Store_Immediate_Data (fragP->fr_literal, | |
4519 | fragP->fr_fix, | |
4520 | OBJ_S_C_TIR); | |
4521 | /* Store the "variable" part. */ | |
4522 | if (fragP->fr_var && fragP->fr_offset) | |
4523 | VMS_Store_Repeated_Data (fragP->fr_offset, | |
4524 | fragP->fr_literal + fragP->fr_fix, | |
4525 | fragP->fr_var, | |
4526 | OBJ_S_C_TIR); | |
4527 | } /* text frag loop */ | |
4528 | ||
4529 | /* | |
4530 | * Now we go through the text segment fixups and generate | |
4531 | * TIR records to fix up addresses within the Text Psect. | |
4532 | */ | |
4533 | for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) | |
4534 | { | |
4535 | /* We DO handle the case of "Symbol - Symbol" as | |
4536 | long as it is in the same segment. */ | |
4537 | if (fixP->fx_subsy && fixP->fx_addsy) | |
4538 | { | |
4539 | /* They need to be in the same segment. */ | |
4540 | if (S_GET_RAW_TYPE (fixP->fx_subsy) != | |
4541 | S_GET_RAW_TYPE (fixP->fx_addsy)) | |
4542 | error (_("Fixup data addsy and subsy don't have the same type")); | |
4543 | /* And they need to be in one that we can check the psect on. */ | |
4544 | if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && | |
4545 | (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) | |
4546 | error (_("Fixup data addsy and subsy don't have an appropriate type")); | |
4547 | /* This had better not be PC relative! */ | |
4548 | if (fixP->fx_pcrel) | |
4549 | error (_("Fixup data is erroneously \"pcrel\"")); | |
4550 | /* Subtract their values to get the difference. */ | |
4551 | dif = S_GET_VALUE (fixP->fx_addsy) - S_GET_VALUE (fixP->fx_subsy); | |
4552 | md_number_to_chars (Local, (valueT)dif, fixP->fx_size); | |
4553 | /* Now generate the fixup object records; | |
4554 | set the psect and store the data. */ | |
4555 | VMS_Set_Psect (Text_Psect, | |
4556 | fixP->fx_where + fixP->fx_frag->fr_address, | |
4557 | OBJ_S_C_TIR); | |
4558 | VMS_Store_Immediate_Data (Local, | |
4559 | fixP->fx_size, | |
4560 | OBJ_S_C_TIR); | |
4561 | continue; /* done with this fixup */ | |
4562 | } /* if fx_subsy && fx_addsy */ | |
4563 | /* Size will HAVE to be "long". */ | |
4564 | if (fixP->fx_size != 4) | |
4565 | error (_("Fixup datum is not a longword")); | |
4566 | /* Symbol must be "added" (if it is ever | |
4567 | subtracted we can fix this assumption). */ | |
4568 | if (fixP->fx_addsy == 0) | |
4569 | error (_("Fixup datum is not \"fixP->fx_addsy\"")); | |
4570 | /* Store the symbol value in a PIC fashion. */ | |
4571 | VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, | |
4572 | fixP->fx_offset, | |
4573 | fixP->fx_pcrel, | |
4574 | Text_Psect, | |
4575 | fixP->fx_where + fixP->fx_frag->fr_address, | |
4576 | OBJ_S_C_TIR); | |
4577 | /* | |
4578 | * Check for indirect address reference, which has to be fixed up | |
4579 | * (as the linker will screw it up with TIR_S_C_STO_PICR)... | |
4580 | */ | |
4581 | if (fixP->fx_pcrel) | |
4582 | VMS_Fix_Indirect_Reference (Text_Psect, | |
4583 | fixP->fx_where + fixP->fx_frag->fr_address, | |
4584 | fixP->fx_frag, | |
4585 | text_frag_root); | |
4586 | } /* text fix loop */ | |
4587 | } | |
4588 | \f | |
4589 | ||
4590 | /* Create a buffer holding the data segment. */ | |
4591 | ||
4592 | static void | |
4593 | synthesize_data_segment (data_siz, text_siz, data_frag_root) | |
4594 | unsigned data_siz, text_siz; | |
4595 | struct frag *data_frag_root; | |
4596 | { | |
4597 | register fragS *fragP; | |
4598 | char *fill_literal; | |
4599 | long fill_size, count, i; | |
4600 | ||
4601 | /* Allocate the data segment. */ | |
4602 | Data_Segment = (char *) xmalloc (data_siz); | |
4603 | /* Run through the data fragments, filling in the segment. */ | |
4604 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
4605 | { | |
4606 | i = fragP->fr_address - text_siz; | |
4607 | if (fragP->fr_fix) | |
4608 | memcpy (Data_Segment + i, fragP->fr_literal, fragP->fr_fix); | |
4609 | i += fragP->fr_fix; | |
4610 | ||
4611 | if ((fill_size = fragP->fr_var) != 0) | |
4612 | { | |
4613 | fill_literal = fragP->fr_literal + fragP->fr_fix; | |
4614 | for (count = fragP->fr_offset; count; count--) | |
4615 | { | |
4616 | memcpy (Data_Segment + i, fill_literal, fill_size); | |
4617 | i += fill_size; | |
4618 | } | |
4619 | } | |
4620 | } /* data frag loop */ | |
4621 | ||
4622 | return; | |
4623 | } | |
4624 | ||
252b5132 RH |
4625 | /* Perform data segment fixups. */ |
4626 | ||
4627 | static void | |
4628 | vms_fixup_data_section (data_siz, text_siz) | |
4629 | unsigned data_siz, text_siz; | |
4630 | { | |
4631 | register struct VMS_Symbol *vsp; | |
4632 | register struct fix *fixP; | |
4633 | register symbolS *sp; | |
4634 | addressT fr_address; | |
4635 | offsetT dif; | |
4636 | valueT val; | |
4637 | ||
4638 | /* Run through all the data symbols and store the data. */ | |
4639 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
4640 | { | |
4641 | /* Ignore anything other than data symbols. */ | |
4642 | if (S_GET_TYPE (vsp->Symbol) != N_DATA) | |
4643 | continue; | |
4644 | /* Set the Psect + Offset. */ | |
4645 | VMS_Set_Psect (vsp->Psect_Index, | |
4646 | vsp->Psect_Offset, | |
4647 | OBJ_S_C_TIR); | |
4648 | /* Store the data. */ | |
4649 | val = S_GET_VALUE (vsp->Symbol); | |
4650 | VMS_Store_Immediate_Data (Data_Segment + val - text_siz, | |
4651 | vsp->Size, | |
4652 | OBJ_S_C_TIR); | |
4653 | } /* N_DATA symbol loop */ | |
4654 | ||
4655 | /* | |
4656 | * Now we go through the data segment fixups and generate | |
4657 | * TIR records to fix up addresses within the Data Psects. | |
4658 | */ | |
4659 | for (fixP = data_fix_root; fixP; fixP = fixP->fx_next) | |
4660 | { | |
4661 | /* Find the symbol for the containing datum. */ | |
4662 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
4663 | { | |
4664 | /* Only bother with Data symbols. */ | |
4665 | sp = vsp->Symbol; | |
4666 | if (S_GET_TYPE (sp) != N_DATA) | |
4667 | continue; | |
4668 | /* Ignore symbol if After fixup. */ | |
4669 | val = S_GET_VALUE (sp); | |
4670 | fr_address = fixP->fx_frag->fr_address; | |
4671 | if (val > fixP->fx_where + fr_address) | |
4672 | continue; | |
4673 | /* See if the datum is here. */ | |
4674 | if (val + vsp->Size <= fixP->fx_where + fr_address) | |
4675 | continue; | |
4676 | /* We DO handle the case of "Symbol - Symbol" as | |
4677 | long as it is in the same segment. */ | |
4678 | if (fixP->fx_subsy && fixP->fx_addsy) | |
4679 | { | |
4680 | /* They need to be in the same segment. */ | |
4681 | if (S_GET_RAW_TYPE (fixP->fx_subsy) != | |
4682 | S_GET_RAW_TYPE (fixP->fx_addsy)) | |
4683 | error (_("Fixup data addsy and subsy don't have the same type")); | |
4684 | /* And they need to be in one that we can check the psect on. */ | |
4685 | if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && | |
4686 | (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) | |
4687 | error (_("Fixup data addsy and subsy don't have an appropriate type")); | |
4688 | /* This had better not be PC relative! */ | |
4689 | if (fixP->fx_pcrel) | |
4690 | error (_("Fixup data is erroneously \"pcrel\"")); | |
4691 | /* Subtract their values to get the difference. */ | |
4692 | dif = S_GET_VALUE (fixP->fx_addsy) - S_GET_VALUE (fixP->fx_subsy); | |
4693 | md_number_to_chars (Local, (valueT)dif, fixP->fx_size); | |
4694 | /* | |
4695 | * Now generate the fixup object records; | |
4696 | * set the psect and store the data. | |
4697 | */ | |
4698 | VMS_Set_Psect (vsp->Psect_Index, | |
4699 | fr_address + fixP->fx_where | |
4700 | - val + vsp->Psect_Offset, | |
4701 | OBJ_S_C_TIR); | |
4702 | VMS_Store_Immediate_Data (Local, | |
4703 | fixP->fx_size, | |
4704 | OBJ_S_C_TIR); | |
4705 | break; /* done with this fixup */ | |
4706 | } | |
4707 | /* Size will HAVE to be "long". */ | |
4708 | if (fixP->fx_size != 4) | |
4709 | error (_("Fixup datum is not a longword")); | |
4710 | /* Symbol must be "added" (if it is ever | |
4711 | subtracted we can fix this assumption). */ | |
4712 | if (fixP->fx_addsy == 0) | |
4713 | error (_("Fixup datum is not \"fixP->fx_addsy\"")); | |
4714 | /* Store the symbol value in a PIC fashion. */ | |
4715 | VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, | |
4716 | fixP->fx_offset, | |
4717 | fixP->fx_pcrel, | |
4718 | vsp->Psect_Index, | |
4719 | fr_address + fixP->fx_where | |
4720 | - val + vsp->Psect_Offset, | |
4721 | OBJ_S_C_TIR); | |
4722 | /* Done with this fixup. */ | |
4723 | break; | |
4724 | } /* vms_symbol loop */ | |
4725 | ||
4726 | } /* data fix loop */ | |
4727 | } | |
4728 | ||
4729 | /* Perform ctors/dtors segment fixups. */ | |
4730 | ||
4731 | static void | |
4732 | vms_fixup_xtors_section (symbols, sect_no) | |
4733 | struct VMS_Symbol *symbols; | |
4734 | int sect_no; | |
4735 | { | |
4736 | register struct VMS_Symbol *vsp; | |
4737 | ||
4738 | /* Run through all the symbols and store the data. */ | |
4739 | for (vsp = symbols; vsp; vsp = vsp->Next) | |
4740 | { | |
4741 | register symbolS *sp; | |
4742 | ||
4743 | /* Set relocation base. */ | |
4744 | VMS_Set_Psect (vsp->Psect_Index, vsp->Psect_Offset, OBJ_S_C_TIR); | |
4745 | ||
4746 | sp = vsp->Symbol; | |
4747 | /* Stack the Psect base with its offset. */ | |
4748 | VMS_Set_Data (Text_Psect, S_GET_VALUE (sp), OBJ_S_C_TIR, 0); | |
4749 | } | |
4750 | /* Flush the buffer if it is more than 75% full. */ | |
4751 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
4752 | Flush_VMS_Object_Record_Buffer (); | |
4753 | ||
4754 | return; | |
4755 | } | |
4756 | \f | |
4757 | ||
4758 | /* Define symbols for the linker. */ | |
4759 | ||
4760 | static void | |
4761 | global_symbol_directory (text_siz, data_siz) | |
4762 | unsigned text_siz, data_siz; | |
4763 | { | |
4764 | register fragS *fragP; | |
4765 | register symbolS *sp; | |
4766 | register struct VMS_Symbol *vsp; | |
4767 | int Globalref, define_as_global_symbol; | |
4768 | ||
4769 | #if 0 | |
4770 | /* The g++ compiler does not write out external references to | |
4771 | vtables correctly. Check for this and holler if we see it | |
4772 | happening. If that compiler bug is ever fixed we can remove | |
4773 | this. | |
4774 | ||
4775 | (Jun'95: gcc 2.7.0's cc1plus still exhibits this behavior.) | |
4776 | ||
4777 | This was reportedly fixed as of June 2, 1998. */ | |
4778 | ||
4779 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
4780 | if (S_GET_RAW_TYPE (sp) == N_UNDF && IS_GXX_VTABLE (sp)) | |
4781 | { | |
4782 | S_SET_TYPE (sp, N_UNDF | N_EXT); | |
4783 | S_SET_OTHER (sp, 1); | |
4784 | as_warn (_("g++ wrote an extern reference to `%s' as a routine.\nI will fix it, but I hope that it was note really a routine."), | |
4785 | S_GET_NAME (sp)); | |
4786 | } | |
4787 | #endif | |
4788 | ||
4789 | /* | |
4790 | * Now scan the symbols and emit the appropriate GSD records | |
4791 | */ | |
4792 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
4793 | { | |
4794 | define_as_global_symbol = 0; | |
4795 | vsp = 0; | |
4796 | /* Dispatch on symbol type. */ | |
4797 | switch (S_GET_RAW_TYPE (sp)) | |
4798 | { | |
4799 | ||
4800 | /* Global uninitialized data. */ | |
4801 | case N_UNDF | N_EXT: | |
4802 | /* Make a VMS data symbol entry. */ | |
4803 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4804 | vsp->Symbol = sp; | |
4805 | vsp->Size = S_GET_VALUE (sp); | |
4806 | vsp->Psect_Index = Psect_Number++; | |
4807 | vsp->Psect_Offset = 0; | |
4808 | vsp->Next = VMS_Symbols; | |
4809 | VMS_Symbols = vsp; | |
4810 | sp->sy_obj = vsp; | |
4811 | /* Make the psect for this data. */ | |
4812 | Globalref = VMS_Psect_Spec (S_GET_NAME (sp), | |
4813 | vsp->Size, | |
4814 | S_GET_OTHER (sp) ? ps_CONST : ps_COMMON, | |
4815 | vsp); | |
4816 | if (Globalref) | |
4817 | Psect_Number--; | |
4818 | #ifdef NOT_VAX_11_C_COMPATIBLE | |
4819 | define_as_global_symbol = 1; | |
4820 | #else | |
4821 | /* See if this is an external vtable. We want to help the | |
4822 | linker find these things in libraries, so we make a symbol | |
4823 | reference. This is not compatible with VAX-C usage for | |
4824 | variables, but since vtables are only used internally by | |
4825 | g++, we can get away with this hack. */ | |
4826 | define_as_global_symbol = IS_GXX_VTABLE (sp); | |
4827 | #endif | |
4828 | break; | |
4829 | ||
4830 | /* Local uninitialized data. */ | |
4831 | case N_BSS: | |
4832 | /* Make a VMS data symbol entry. */ | |
4833 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4834 | vsp->Symbol = sp; | |
4835 | vsp->Size = 0; | |
4836 | vsp->Psect_Index = Bss_Psect; | |
4837 | vsp->Psect_Offset = S_GET_VALUE (sp) - bss_address_frag.fr_address; | |
4838 | vsp->Next = VMS_Symbols; | |
4839 | VMS_Symbols = vsp; | |
4840 | sp->sy_obj = vsp; | |
4841 | break; | |
4842 | ||
4843 | /* Global initialized data. */ | |
4844 | case N_DATA | N_EXT: | |
4845 | /* Make a VMS data symbol entry. */ | |
4846 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4847 | vsp->Symbol = sp; | |
4848 | vsp->Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); | |
4849 | vsp->Psect_Index = Psect_Number++; | |
4850 | vsp->Psect_Offset = 0; | |
4851 | vsp->Next = VMS_Symbols; | |
4852 | VMS_Symbols = vsp; | |
4853 | sp->sy_obj = vsp; | |
4854 | /* Make its psect. */ | |
4855 | Globalref = VMS_Psect_Spec (S_GET_NAME (sp), | |
4856 | vsp->Size, | |
4857 | S_GET_OTHER (sp) ? ps_CONST : ps_COMMON, | |
4858 | vsp); | |
4859 | if (Globalref) | |
4860 | Psect_Number--; | |
4861 | #ifdef NOT_VAX_11_C_COMPATIBLE | |
4862 | define_as_global_symbol = 1; | |
4863 | #else | |
4864 | /* See N_UNDF|N_EXT above for explanation. */ | |
4865 | define_as_global_symbol = IS_GXX_VTABLE (sp); | |
4866 | #endif | |
4867 | break; | |
4868 | ||
4869 | /* Local initialized data. */ | |
4870 | case N_DATA: | |
4871 | { | |
4872 | char *sym_name = S_GET_NAME (sp); | |
4873 | ||
4874 | /* Always suppress local numeric labels. */ | |
4875 | if (sym_name && strcmp (sym_name, FAKE_LABEL_NAME) == 0) | |
4876 | break; | |
4877 | ||
4878 | /* Make a VMS data symbol entry. */ | |
4879 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4880 | vsp->Symbol = sp; | |
4881 | vsp->Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); | |
4882 | vsp->Psect_Index = Data_Psect; | |
4883 | vsp->Psect_Offset = Local_Initd_Data_Size; | |
4884 | Local_Initd_Data_Size += vsp->Size; | |
4885 | vsp->Next = VMS_Symbols; | |
4886 | VMS_Symbols = vsp; | |
4887 | sp->sy_obj = vsp; | |
4888 | } | |
4889 | break; | |
4890 | ||
4891 | /* Global Text definition. */ | |
4892 | case N_TEXT | N_EXT: | |
4893 | { | |
4894 | ||
4895 | if (IS_GXX_XTOR (sp)) | |
4896 | { | |
4897 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4898 | vsp->Symbol = sp; | |
4899 | vsp->Size = XTOR_SIZE; | |
4900 | sp->sy_obj = vsp; | |
4901 | switch ((S_GET_NAME (sp))[10]) | |
4902 | { | |
4903 | case 'I': | |
4904 | vsp->Psect_Index = Ctors_Psect; | |
4905 | vsp->Psect_Offset = (Ctors_Symbols==0)?0:(Ctors_Symbols->Psect_Offset+XTOR_SIZE); | |
4906 | vsp->Next = Ctors_Symbols; | |
4907 | Ctors_Symbols = vsp; | |
4908 | break; | |
4909 | case 'D': | |
4910 | vsp->Psect_Index = Dtors_Psect; | |
4911 | vsp->Psect_Offset = (Dtors_Symbols==0)?0:(Dtors_Symbols->Psect_Offset+XTOR_SIZE); | |
4912 | vsp->Next = Dtors_Symbols; | |
4913 | Dtors_Symbols = vsp; | |
4914 | break; | |
4915 | case 'G': | |
4916 | as_warn (_("Can't handle global xtors symbols yet.")); | |
4917 | break; | |
4918 | default: | |
4919 | as_warn (_("Unknown %s"), S_GET_NAME (sp)); | |
4920 | break; | |
4921 | } | |
4922 | } | |
4923 | else | |
4924 | { | |
4925 | unsigned short Entry_Mask; | |
4926 | ||
4927 | /* Get the entry mask. */ | |
4928 | fragP = sp->sy_frag; | |
4929 | /* First frag might be empty if we're generating listings. | |
4930 | So skip empty rs_fill frags. */ | |
4931 | while (fragP && fragP->fr_type == rs_fill && fragP->fr_fix == 0) | |
4932 | fragP = fragP->fr_next; | |
4933 | ||
4934 | /* If first frag doesn't contain the data, what do we do? | |
4935 | If it's possibly smaller than two bytes, that would | |
4936 | imply that the entry mask is not stored where we're | |
4937 | expecting it. | |
4938 | ||
4939 | If you can find a test case that triggers this, report | |
4940 | it (and tell me what the entry mask field ought to be), | |
4941 | and I'll try to fix it. KR */ | |
4942 | if (fragP->fr_fix < 2) | |
4943 | abort (); | |
4944 | ||
4945 | Entry_Mask = (fragP->fr_literal[0] & 0x00ff) | | |
4946 | ((fragP->fr_literal[1] & 0x00ff) << 8); | |
4947 | /* Define the procedure entry point. */ | |
4948 | VMS_Procedure_Entry_Pt (S_GET_NAME (sp), | |
4949 | Text_Psect, | |
4950 | S_GET_VALUE (sp), | |
4951 | Entry_Mask); | |
4952 | } | |
4953 | break; | |
4954 | } | |
4955 | ||
4956 | /* Local Text definition. */ | |
4957 | case N_TEXT: | |
4958 | /* Make a VMS data symbol entry. */ | |
4959 | if (Text_Psect != -1) | |
4960 | { | |
4961 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4962 | vsp->Symbol = sp; | |
4963 | vsp->Size = 0; | |
4964 | vsp->Psect_Index = Text_Psect; | |
4965 | vsp->Psect_Offset = S_GET_VALUE (sp); | |
4966 | vsp->Next = VMS_Symbols; | |
4967 | VMS_Symbols = vsp; | |
4968 | sp->sy_obj = vsp; | |
4969 | } | |
4970 | break; | |
4971 | ||
4972 | /* Global Reference. */ | |
4973 | case N_UNDF: | |
4974 | /* Make a GSD global symbol reference record. */ | |
4975 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
4976 | 0, | |
4977 | 0, | |
4978 | GBLSYM_REF); | |
4979 | break; | |
4980 | ||
4981 | /* Absolute symbol. */ | |
4982 | case N_ABS: | |
4983 | case N_ABS | N_EXT: | |
4984 | /* gcc doesn't generate these; | |
4985 | VMS_Emit_Globalvalue handles them though. */ | |
4986 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
4987 | vsp->Symbol = sp; | |
4988 | vsp->Size = 4; /* always assume 32 bits */ | |
4989 | vsp->Psect_Index = 0; | |
4990 | vsp->Psect_Offset = S_GET_VALUE (sp); | |
4991 | vsp->Next = VMS_Symbols; | |
4992 | VMS_Symbols = vsp; | |
4993 | sp->sy_obj = vsp; | |
4994 | break; | |
4995 | ||
4996 | /* Anything else. */ | |
4997 | default: | |
4998 | /* Ignore STAB symbols, including .stabs emitted by g++. */ | |
4999 | if (S_IS_DEBUG (sp) || (S_GET_TYPE (sp) == 22)) | |
5000 | break; | |
5001 | /* | |
5002 | * Error otherwise. | |
5003 | */ | |
5004 | as_tsktsk (_("unhandled stab type %d"), S_GET_TYPE (sp)); | |
5005 | break; | |
5006 | } | |
5007 | ||
5008 | /* Global symbols have different linkage than external variables. */ | |
5009 | if (define_as_global_symbol) | |
5010 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
5011 | vsp->Psect_Index, | |
5012 | 0, | |
5013 | GBLSYM_DEF); | |
5014 | } | |
5015 | ||
5016 | return; | |
5017 | } | |
5018 | \f | |
5019 | ||
5020 | /* Output debugger symbol table information for symbols which | |
5021 | are local to a specific routine. */ | |
5022 | ||
5023 | static void | |
5024 | local_symbols_DST (s0P, Current_Routine) | |
5025 | symbolS *s0P, *Current_Routine; | |
5026 | { | |
5027 | symbolS *s1P; | |
5028 | char *s0P_name, *pnt0, *pnt1; | |
5029 | ||
5030 | s0P_name = S_GET_NAME (s0P); | |
5031 | if (*s0P_name++ != '_') | |
5032 | return; | |
5033 | ||
5034 | for (s1P = Current_Routine; s1P; s1P = symbol_next (s1P)) | |
5035 | { | |
5036 | #if 0 /* redundant; RAW_TYPE != N_FUN suffices */ | |
5037 | if (!S_IS_DEBUG (s1P)) | |
5038 | continue; | |
5039 | #endif | |
5040 | if (S_GET_RAW_TYPE (s1P) != N_FUN) | |
5041 | continue; | |
5042 | pnt0 = s0P_name; | |
5043 | pnt1 = S_GET_NAME (s1P); | |
5044 | /* We assume the two strings are never exactly equal... */ | |
5045 | while (*pnt0++ == *pnt1++) | |
5046 | { | |
5047 | } | |
5048 | /* Found it if s0P name is exhausted and s1P name has ":F" or ":f" next. | |
5049 | Note: both pointers have advanced one past the non-matching char. */ | |
5050 | if ((*pnt1 == 'F' || *pnt1 == 'f') && *--pnt1 == ':' && *--pnt0 == '\0') | |
5051 | { | |
5052 | Define_Routine (s1P, 0, Current_Routine, Text_Psect); | |
5053 | return; | |
5054 | } | |
5055 | } | |
5056 | } | |
5057 | ||
252b5132 RH |
5058 | /* Construct and output the debug symbol table. */ |
5059 | ||
5060 | static void | |
5061 | vms_build_DST (text_siz) | |
5062 | unsigned text_siz; | |
5063 | { | |
5064 | register symbolS *symbolP; | |
5065 | symbolS *Current_Routine = 0; | |
5066 | struct input_file *Cur_File = 0; | |
5067 | offsetT Cur_Offset = -1; | |
5068 | int Cur_Line_Number = 0; | |
5069 | int File_Number = 0; | |
5070 | int Debugger_Offset = 0; | |
5071 | int file_available; | |
5072 | int dsc; | |
5073 | offsetT val; | |
5074 | ||
5075 | /* Write the Traceback Begin Module record. */ | |
5076 | VMS_TBT_Module_Begin (); | |
5077 | ||
5078 | /* | |
5079 | * Output debugging info for global variables and static variables | |
5080 | * that are not specific to one routine. We also need to examine | |
5081 | * all stabs directives, to find the definitions to all of the | |
5082 | * advanced data types, and this is done by VMS_LSYM_Parse. This | |
5083 | * needs to be done before any definitions are output to the object | |
5084 | * file, since there can be forward references in the stabs | |
5085 | * directives. When through with parsing, the text of the stabs | |
5086 | * directive is altered, with the definitions removed, so that later | |
5087 | * passes will see directives as they would be written if the type | |
5088 | * were already defined. | |
5089 | * | |
5090 | * We also look for files and include files, and make a list of | |
5091 | * them. We examine the source file numbers to establish the actual | |
5092 | * lines that code was generated from, and then generate offsets. | |
5093 | */ | |
5094 | VMS_LSYM_Parse (); | |
5095 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
5096 | { | |
5097 | /* Only deal with STAB symbols here. */ | |
5098 | if (!S_IS_DEBUG (symbolP)) | |
5099 | continue; | |
5100 | /* | |
5101 | * Dispatch on STAB type. | |
5102 | */ | |
5103 | switch (S_GET_RAW_TYPE (symbolP)) | |
5104 | { | |
5105 | case N_SLINE: | |
5106 | dsc = S_GET_DESC (symbolP); | |
5107 | if (dsc > Cur_File->max_line) | |
5108 | Cur_File->max_line = dsc; | |
5109 | if (dsc < Cur_File->min_line) | |
5110 | Cur_File->min_line = dsc; | |
5111 | break; | |
5112 | case N_SO: | |
5113 | Cur_File = find_file (symbolP); | |
5114 | Cur_File->flag = 1; | |
5115 | Cur_File->min_line = 1; | |
5116 | break; | |
5117 | case N_SOL: | |
5118 | Cur_File = find_file (symbolP); | |
5119 | break; | |
5120 | case N_GSYM: | |
5121 | VMS_GSYM_Parse (symbolP, Text_Psect); | |
5122 | break; | |
5123 | case N_LCSYM: | |
5124 | VMS_LCSYM_Parse (symbolP, Text_Psect); | |
5125 | break; | |
5126 | case N_FUN: /* For static constant symbols */ | |
5127 | case N_STSYM: | |
5128 | VMS_STSYM_Parse (symbolP, Text_Psect); | |
5129 | break; | |
5130 | default: | |
5131 | break; | |
5132 | } /* switch */ | |
5133 | } /* for */ | |
5134 | ||
5135 | /* | |
5136 | * Now we take a quick sweep through the files and assign offsets | |
5137 | * to each one. This will essentially be the starting line number to | |
5138 | * the debugger for each file. Output the info for the debugger to | |
5139 | * specify the files, and then tell it how many lines to use. | |
5140 | */ | |
5141 | for (Cur_File = file_root; Cur_File; Cur_File = Cur_File->next) | |
5142 | { | |
5143 | if (Cur_File->max_line == 0) | |
5144 | continue; | |
5145 | if ((strncmp (Cur_File->name, "GNU_GXX_INCLUDE:", 16) == 0) && | |
5146 | !flag_debug) | |
5147 | continue; | |
5148 | if ((strncmp (Cur_File->name, "GNU_CC_INCLUDE:", 15) == 0) && | |
5149 | !flag_debug) | |
5150 | continue; | |
5151 | /* show a few extra lines at the start of the region selected */ | |
5152 | if (Cur_File->min_line > 2) | |
5153 | Cur_File->min_line -= 2; | |
5154 | Cur_File->offset = Debugger_Offset - Cur_File->min_line + 1; | |
5155 | Debugger_Offset += Cur_File->max_line - Cur_File->min_line + 1; | |
5156 | if (Cur_File->same_file_fpnt) | |
5157 | { | |
5158 | Cur_File->file_number = Cur_File->same_file_fpnt->file_number; | |
5159 | } | |
5160 | else | |
5161 | { | |
5162 | Cur_File->file_number = ++File_Number; | |
5163 | file_available = VMS_TBT_Source_File (Cur_File->name, | |
5164 | Cur_File->file_number); | |
5165 | if (!file_available) | |
5166 | { | |
5167 | Cur_File->file_number = 0; | |
5168 | File_Number--; | |
5169 | continue; | |
5170 | } | |
5171 | } | |
5172 | VMS_TBT_Source_Lines (Cur_File->file_number, | |
5173 | Cur_File->min_line, | |
5174 | Cur_File->max_line - Cur_File->min_line + 1); | |
5175 | } /* for */ | |
5176 | Cur_File = (struct input_file *) NULL; | |
5177 | ||
5178 | /* | |
5179 | * Scan the symbols and write out the routines | |
5180 | * (this makes the assumption that symbols are in | |
5181 | * order of ascending text segment offset) | |
5182 | */ | |
5183 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
5184 | { | |
5185 | /* | |
5186 | * Deal with text symbols. | |
5187 | */ | |
5188 | if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) | |
5189 | { | |
5190 | /* | |
5191 | * Ignore symbols starting with "L", as they are local symbols. | |
5192 | */ | |
5193 | if (*S_GET_NAME (symbolP) == 'L') | |
5194 | continue; | |
5195 | /* | |
5196 | * If there is a routine start defined, terminate it. | |
5197 | */ | |
5198 | if (Current_Routine) | |
5199 | VMS_TBT_Routine_End (text_siz, Current_Routine); | |
5200 | ||
5201 | /* | |
5202 | * Check for & skip dummy labels like "gcc_compiled.". | |
5203 | * They're identified by the IN_DEFAULT_SECTION flag. | |
5204 | */ | |
5205 | if ((S_GET_OTHER (symbolP) & IN_DEFAULT_SECTION) != 0 && | |
5206 | S_GET_VALUE (symbolP) == 0) | |
5207 | continue; | |
5208 | /* | |
5209 | * Store the routine begin traceback info. | |
5210 | */ | |
5211 | VMS_TBT_Routine_Begin (symbolP, Text_Psect); | |
5212 | Current_Routine = symbolP; | |
5213 | /* | |
5214 | * Define symbols local to this routine. | |
5215 | */ | |
5216 | local_symbols_DST (symbolP, Current_Routine); | |
5217 | /* | |
5218 | * Done | |
5219 | */ | |
5220 | continue; | |
5221 | ||
5222 | } | |
5223 | /* | |
5224 | * Deal with STAB symbols. | |
5225 | */ | |
5226 | else if (S_IS_DEBUG (symbolP)) | |
5227 | { | |
5228 | /* | |
5229 | * Dispatch on STAB type. | |
5230 | */ | |
5231 | switch (S_GET_RAW_TYPE (symbolP)) | |
5232 | { | |
5233 | /* | |
5234 | * Line number | |
5235 | */ | |
5236 | case N_SLINE: | |
5237 | /* Offset the line into the correct portion of the file. */ | |
5238 | if (Cur_File->file_number == 0) | |
5239 | break; | |
5240 | val = S_GET_VALUE (symbolP); | |
5241 | /* Sometimes the same offset gets several source lines | |
5242 | assigned to it. We should be selective about which | |
5243 | lines we allow, we should prefer lines that are in | |
5244 | the main source file when debugging inline functions. */ | |
5245 | if (val == Cur_Offset && Cur_File->file_number != 1) | |
5246 | break; | |
5247 | ||
5248 | /* calculate actual debugger source line */ | |
5249 | dsc = S_GET_DESC (symbolP) + Cur_File->offset; | |
5250 | S_SET_DESC (symbolP, dsc); | |
5251 | /* | |
5252 | * Define PC/Line correlation. | |
5253 | */ | |
5254 | if (Cur_Offset == -1) | |
5255 | { | |
5256 | /* | |
5257 | * First N_SLINE; set up initial correlation. | |
5258 | */ | |
5259 | VMS_TBT_Line_PC_Correlation (dsc, | |
5260 | val, | |
5261 | Text_Psect, | |
5262 | 0); | |
5263 | } | |
5264 | else if ((dsc - Cur_Line_Number) <= 0) | |
5265 | { | |
5266 | /* | |
5267 | * Line delta is not +ve, we need to close the line and | |
5268 | * start a new PC/Line correlation. | |
5269 | */ | |
5270 | VMS_TBT_Line_PC_Correlation (0, | |
5271 | val - Cur_Offset, | |
5272 | 0, | |
5273 | -1); | |
5274 | VMS_TBT_Line_PC_Correlation (dsc, | |
5275 | val, | |
5276 | Text_Psect, | |
5277 | 0); | |
5278 | } | |
5279 | else | |
5280 | { | |
5281 | /* | |
5282 | * Line delta is +ve, all is well. | |
5283 | */ | |
5284 | VMS_TBT_Line_PC_Correlation (dsc - Cur_Line_Number, | |
5285 | val - Cur_Offset, | |
5286 | 0, | |
5287 | 1); | |
5288 | } | |
5289 | /* Update the current line/PC info. */ | |
5290 | Cur_Line_Number = dsc; | |
5291 | Cur_Offset = val; | |
5292 | break; | |
5293 | ||
5294 | /* | |
5295 | * Source file | |
5296 | */ | |
5297 | case N_SO: | |
5298 | /* Remember that we had a source file and emit | |
5299 | the source file debugger record. */ | |
5300 | Cur_File = find_file (symbolP); | |
5301 | break; | |
5302 | ||
5303 | case N_SOL: | |
5304 | /* We need to make sure that we are really in the actual | |
5305 | source file when we compute the maximum line number. | |
5306 | Otherwise the debugger gets really confused. */ | |
5307 | Cur_File = find_file (symbolP); | |
5308 | break; | |
5309 | ||
5310 | default: | |
5311 | break; | |
5312 | } /* switch */ | |
5313 | } /* if (IS_DEBUG) */ | |
5314 | } /* for */ | |
5315 | ||
5316 | /* | |
5317 | * If there is a routine start defined, terminate it | |
5318 | * (and the line numbers). | |
5319 | */ | |
5320 | if (Current_Routine) | |
5321 | { | |
5322 | /* Terminate the line numbers. */ | |
5323 | VMS_TBT_Line_PC_Correlation (0, | |
5324 | text_siz - S_GET_VALUE (Current_Routine), | |
5325 | 0, | |
5326 | -1); | |
5327 | /* Terminate the routine. */ | |
5328 | VMS_TBT_Routine_End (text_siz, Current_Routine); | |
5329 | } | |
5330 | ||
5331 | /* Write the Traceback End Module TBT record. */ | |
5332 | VMS_TBT_Module_End (); | |
5333 | } | |
5334 | \f | |
5335 | ||
5336 | /* Write a VAX/VMS object file (everything else has been done!). */ | |
5337 | ||
5338 | void | |
5339 | vms_write_object_file (text_siz, data_siz, bss_siz, text_frag_root, | |
5340 | data_frag_root) | |
5341 | unsigned text_siz; | |
5342 | unsigned data_siz; | |
5343 | unsigned bss_siz; | |
5344 | fragS *text_frag_root; | |
5345 | fragS *data_frag_root; | |
5346 | { | |
5347 | register struct VMS_Symbol *vsp; | |
5348 | ||
5349 | /* | |
5350 | * Initialize program section indices; values get updated later. | |
5351 | */ | |
5352 | Psect_Number = 0; /* next Psect Index to use */ | |
5353 | Text_Psect = -1; /* Text Psect Index */ | |
5354 | Data_Psect = -2; /* Data Psect Index JF: Was -1 */ | |
5355 | Bss_Psect = -3; /* Bss Psect Index JF: Was -1 */ | |
5356 | Ctors_Psect = -4; /* Ctors Psect Index */ | |
5357 | Dtors_Psect = -5; /* Dtors Psect Index */ | |
5358 | /* Initialize other state variables. */ | |
5359 | Data_Segment = 0; | |
5360 | Local_Initd_Data_Size = 0; | |
5361 | ||
5362 | /* | |
5363 | * Create the actual output file and populate it with required | |
5364 | * "module header" information. | |
5365 | */ | |
5366 | Create_VMS_Object_File (); | |
5367 | Write_VMS_MHD_Records (); | |
5368 | ||
5369 | /* | |
5370 | * Create the Data segment: | |
5371 | * | |
5372 | * Since this is REALLY hard to do any other way, | |
5373 | * we actually manufacture the data segment and | |
5374 | * then store the appropriate values out of it. | |
5375 | * We need to generate this early, so that globalvalues | |
5376 | * can be properly emitted. | |
5377 | */ | |
5378 | if (data_siz > 0) | |
5379 | synthesize_data_segment (data_siz, text_siz, data_frag_root); | |
5380 | ||
252b5132 RH |
5381 | /******* Global Symbol Directory *******/ |
5382 | ||
5383 | /* | |
5384 | * Emit globalvalues now. We must do this before the text psect is | |
5385 | * defined, or we will get linker warnings about multiply defined | |
5386 | * symbols. All of the globalvalues "reference" psect 0, although | |
5387 | * it really does not have anything to do with it. | |
5388 | */ | |
5389 | VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment); | |
5390 | /* | |
5391 | * Define the Text Psect | |
5392 | */ | |
5393 | Text_Psect = Psect_Number++; | |
5394 | VMS_Psect_Spec ("$code", text_siz, ps_TEXT, 0); | |
5395 | /* | |
5396 | * Define the BSS Psect | |
5397 | */ | |
5398 | if (bss_siz > 0) | |
5399 | { | |
5400 | Bss_Psect = Psect_Number++; | |
5401 | VMS_Psect_Spec ("$uninitialized_data", bss_siz, ps_DATA, 0); | |
5402 | } | |
5403 | /* | |
5404 | * Define symbols to the linker. | |
5405 | */ | |
5406 | global_symbol_directory (text_siz, data_siz); | |
5407 | /* | |
5408 | * Define the Data Psect | |
5409 | */ | |
5410 | if (data_siz > 0 && Local_Initd_Data_Size > 0) | |
5411 | { | |
5412 | Data_Psect = Psect_Number++; | |
5413 | VMS_Psect_Spec ("$data", Local_Initd_Data_Size, ps_DATA, 0); | |
5414 | /* | |
5415 | * Local initialized data (N_DATA) symbols need to be updated to the | |
5416 | * proper value of Data_Psect now that it's actually been defined. | |
5417 | * (A dummy value was used in global_symbol_directory() above.) | |
5418 | */ | |
5419 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
5420 | if (vsp->Psect_Index < 0 && S_GET_RAW_TYPE (vsp->Symbol) == N_DATA) | |
5421 | vsp->Psect_Index = Data_Psect; | |
5422 | } | |
5423 | ||
252b5132 RH |
5424 | if (Ctors_Symbols != 0) |
5425 | { | |
5426 | char *ps_name = "$ctors"; | |
5427 | Ctors_Psect = Psect_Number++; | |
5428 | VMS_Psect_Spec (ps_name, Ctors_Symbols->Psect_Offset + XTOR_SIZE, | |
5429 | ps_CTORS, 0); | |
5430 | VMS_Global_Symbol_Spec (ps_name, Ctors_Psect, | |
5431 | 0, GBLSYM_DEF|GBLSYM_WEAK); | |
5432 | for (vsp = Ctors_Symbols; vsp; vsp = vsp->Next) | |
5433 | vsp->Psect_Index = Ctors_Psect; | |
5434 | } | |
5435 | ||
5436 | if (Dtors_Symbols != 0) | |
5437 | { | |
5438 | char *ps_name = "$dtors"; | |
5439 | Dtors_Psect = Psect_Number++; | |
5440 | VMS_Psect_Spec (ps_name, Dtors_Symbols->Psect_Offset + XTOR_SIZE, | |
5441 | ps_DTORS, 0); | |
5442 | VMS_Global_Symbol_Spec (ps_name, Dtors_Psect, | |
5443 | 0, GBLSYM_DEF|GBLSYM_WEAK); | |
5444 | for (vsp = Dtors_Symbols; vsp; vsp = vsp->Next) | |
5445 | vsp->Psect_Index = Dtors_Psect; | |
5446 | } | |
5447 | ||
5448 | /******* Text Information and Relocation Records *******/ | |
5449 | ||
5450 | /* | |
5451 | * Write the text segment data | |
5452 | */ | |
5453 | if (text_siz > 0) | |
5454 | vms_fixup_text_section (text_siz, text_frag_root, data_frag_root); | |
5455 | /* | |
5456 | * Write the data segment data, then discard it. | |
5457 | */ | |
5458 | if (data_siz > 0) | |
5459 | { | |
5460 | vms_fixup_data_section (data_siz, text_siz); | |
5461 | free (Data_Segment), Data_Segment = 0; | |
5462 | } | |
5463 | ||
5464 | if (Ctors_Symbols != 0) | |
5465 | { | |
5466 | vms_fixup_xtors_section (Ctors_Symbols, Ctors_Psect); | |
5467 | } | |
5468 | ||
5469 | if (Dtors_Symbols != 0) | |
5470 | { | |
5471 | vms_fixup_xtors_section (Dtors_Symbols, Dtors_Psect); | |
5472 | } | |
5473 | ||
252b5132 RH |
5474 | /******* Debugger Symbol Table Records *******/ |
5475 | ||
5476 | vms_build_DST (text_siz); | |
5477 | ||
252b5132 RH |
5478 | /******* Wrap things up *******/ |
5479 | ||
5480 | /* | |
5481 | * Write the End Of Module record | |
5482 | */ | |
5483 | if (Entry_Point_Symbol) | |
5484 | Write_VMS_EOM_Record (Text_Psect, S_GET_VALUE (Entry_Point_Symbol)); | |
5485 | else | |
5486 | Write_VMS_EOM_Record (-1, (valueT) 0); | |
5487 | ||
5488 | /* | |
5489 | * All done, close the object file | |
5490 | */ | |
5491 | Close_VMS_Object_File (); | |
5492 | } |