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be9618de | 1 | /* vms.c -- Write out a VAX/VMS object file |
8e86815b | 2 | Copyright (C) 1987, 1988, 1992, 1994, 1995 Free Software Foundation, Inc. |
be9618de KR |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GAS; see the file COPYING. If not, write to | |
a2a5a4fa | 18 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
be9618de KR |
19 | |
20 | /* Written by David L. Kashtan */ | |
21 | /* Modified by Eric Youngdale to write VMS debug records for program | |
22 | variables */ | |
4b18b7cd KR |
23 | |
24 | /* Want all of obj-vms.h (as obj-format.h, via targ-env.h, via as.h). */ | |
25 | #define WANT_VMS_OBJ_DEFS | |
26 | ||
be9618de | 27 | #include "as.h" |
db4e0f90 | 28 | #include "config.h" |
be9618de KR |
29 | #include "subsegs.h" |
30 | #include "obstack.h" | |
31 | ||
32 | /* What we do if there is a goof. */ | |
33 | #define error as_fatal | |
34 | ||
b9419dd2 | 35 | #ifdef VMS /* These are of no use if we are cross assembling. */ |
be9618de KR |
36 | #include <fab.h> /* Define File Access Block */ |
37 | #include <nam.h> /* Define NAM Block */ | |
38 | #include <xab.h> /* Define XAB - all different types*/ | |
8e86815b | 39 | extern int sys$open(), sys$close(), sys$asctim(); |
be9618de | 40 | #endif |
4b18b7cd | 41 | |
be9618de KR |
42 | /* |
43 | * Version string of the compiler that produced the code we are | |
44 | * assembling. (And this assembler, if we do not have compiler info.) | |
45 | */ | |
be9618de KR |
46 | char *compiler_version_string; |
47 | ||
def66e24 | 48 | extern int flag_hash_long_names; /* -+ */ |
4b18b7cd | 49 | extern int flag_one; /* -1; compatibility with gcc 1.x */ |
def66e24 DM |
50 | extern int flag_show_after_trunc; /* -H */ |
51 | extern int flag_no_hash_mixed_case; /* -h NUM */ | |
52 | ||
be9618de KR |
53 | /* Flag that determines how we map names. This takes several values, and |
54 | * is set with the -h switch. A value of zero implies names should be | |
55 | * upper case, and the presence of the -h switch inhibits the case hack. | |
56 | * No -h switch at all sets vms_name_mapping to 0, and allows case hacking. | |
57 | * A value of 2 (set with -h2) implies names should be | |
58 | * all lower case, with no case hack. A value of 3 (set with -h3) implies | |
59 | * that case should be preserved. */ | |
60 | ||
61 | /* If the -+ switch is given, then the hash is appended to any name that is | |
4b18b7cd | 62 | * longer than 31 characters, regardless of the setting of the -h switch. |
be9618de KR |
63 | */ |
64 | ||
65 | char vms_name_mapping = 0; | |
66 | ||
be9618de KR |
67 | static symbolS *Entry_Point_Symbol = 0; /* Pointer to "_main" */ |
68 | ||
69 | /* | |
70 | * We augment the "gas" symbol structure with this | |
71 | */ | |
72 | struct VMS_Symbol | |
73 | { | |
74 | struct VMS_Symbol *Next; | |
4b18b7cd | 75 | symbolS *Symbol; |
be9618de KR |
76 | int Size; |
77 | int Psect_Index; | |
78 | int Psect_Offset; | |
79 | }; | |
4b18b7cd | 80 | |
be9618de KR |
81 | struct VMS_Symbol *VMS_Symbols = 0; |
82 | ||
83 | /* We need this to keep track of the various input files, so that we can | |
84 | * give the debugger the correct source line. | |
85 | */ | |
86 | ||
87 | struct input_file | |
88 | { | |
89 | struct input_file *next; | |
90 | struct input_file *same_file_fpnt; | |
91 | int file_number; | |
92 | int max_line; | |
93 | int min_line; | |
94 | int offset; | |
95 | char flag; | |
96 | char *name; | |
97 | symbolS *spnt; | |
98 | }; | |
99 | ||
100 | static struct input_file *file_root = (struct input_file *) NULL; | |
101 | ||
102 | ||
5700b874 KR |
103 | /* |
104 | * Styles of PSECTS (program sections) that we generate; just shorthand | |
105 | * to avoid lists of section attributes. Used by VMS_Psect_Spec(). | |
106 | */ | |
107 | enum ps_type | |
108 | { | |
109 | ps_TEXT, ps_DATA, ps_COMMON, ps_CONST | |
110 | }; | |
111 | ||
be9618de KR |
112 | /* |
113 | * This enum is used to keep track of the various types of variables that | |
114 | * may be present. | |
115 | */ | |
116 | ||
117 | enum advanced_type | |
118 | { | |
494a6c05 | 119 | BASIC, POINTER, ARRAY, ENUM, STRUCT, UNION, FUNCTION, VOID, ALIAS, UNKNOWN |
be9618de KR |
120 | }; |
121 | ||
122 | /* | |
123 | * This structure contains the information from the stabs directives, and the | |
124 | * information is filled in by VMS_typedef_parse. Everything that is needed | |
125 | * to generate the debugging record for a given symbol is present here. | |
126 | * This could be done more efficiently, using nested struct/unions, but for now | |
127 | * I am happy that it works. | |
128 | */ | |
129 | struct VMS_DBG_Symbol | |
130 | { | |
131 | struct VMS_DBG_Symbol *next; | |
54f10da0 KR |
132 | /* description of what this is */ |
133 | enum advanced_type advanced; | |
134 | /* this record is for this type */ | |
135 | int dbx_type; | |
136 | /* For advanced types this is the type referred to. I.e., the type | |
137 | a pointer points to, or the type of object that makes up an | |
138 | array. */ | |
139 | int type2; | |
140 | /* Use this type when generating a variable def */ | |
141 | int VMS_type; | |
142 | /* used for arrays - this will be present for all */ | |
143 | int index_min; | |
144 | /* entries, but will be meaningless for non-arrays */ | |
145 | int index_max; | |
146 | /* Size in bytes of the data type. For an array, this is the size | |
147 | of one element in the array */ | |
148 | int data_size; | |
149 | /* Number of the structure/union/enum - used for ref */ | |
150 | int struc_numb; | |
be9618de KR |
151 | }; |
152 | ||
b003a2d9 KR |
153 | #define SYMTYPLST_SIZE (1<<4) /* 16; must be power of two */ |
154 | #define SYMTYP_HASH(x) ((unsigned)(x) & (SYMTYPLST_SIZE-1)) | |
155 | struct VMS_DBG_Symbol *VMS_Symbol_type_list[SYMTYPLST_SIZE]; | |
be9618de KR |
156 | |
157 | /* | |
158 | * We need this structure to keep track of forward references to | |
159 | * struct/union/enum that have not been defined yet. When they are ultimately | |
160 | * defined, then we can go back and generate the TIR commands to make a back | |
161 | * reference. | |
162 | */ | |
163 | ||
164 | struct forward_ref | |
165 | { | |
166 | struct forward_ref *next; | |
167 | int dbx_type; | |
168 | int struc_numb; | |
169 | char resolved; | |
170 | }; | |
171 | ||
4b18b7cd | 172 | struct forward_ref *f_ref_root = (struct forward_ref *) NULL; |
be9618de KR |
173 | |
174 | /* | |
175 | * This routine is used to compare the names of certain types to various | |
176 | * fixed types that are known by the debugger. | |
177 | */ | |
4b18b7cd | 178 | #define type_check(X) !strcmp (symbol_name, X) |
be9618de KR |
179 | |
180 | /* | |
181 | * This variable is used to keep track of the name of the symbol we are | |
182 | * working on while we are parsing the stabs directives. | |
183 | */ | |
f2224fe2 | 184 | static const char *symbol_name; |
be9618de KR |
185 | |
186 | /* We use this counter to assign numbers to all of the structures, unions | |
187 | * and enums that we define. When we actually declare a variable to the | |
188 | * debugger, we can simply do it by number, rather than describing the | |
189 | * whole thing each time. | |
190 | */ | |
191 | ||
192 | static structure_count = 0; | |
193 | ||
494a6c05 KR |
194 | /* This variable is used to indicate that we are making the last attempt to |
195 | parse the stabs, and that we should define as much as we can, and ignore | |
196 | the rest */ | |
197 | ||
198 | static int final_pass; | |
199 | ||
be9618de KR |
200 | /* This variable is used to keep track of the current structure number |
201 | * for a given variable. If this is < 0, that means that the structure | |
202 | * has not yet been defined to the debugger. This is still cool, since | |
203 | * the VMS object language has ways of fixing things up after the fact, | |
204 | * so we just make a note of this, and generate fixups at the end. | |
205 | */ | |
206 | static int struct_number; | |
207 | ||
a9918088 KR |
208 | /* This is used to distinguish between D_float and G_float for telling |
209 | the debugger about doubles. gcc outputs the same .stabs regardless | |
210 | of whether -mg is used to select alternate doubles. */ | |
211 | ||
212 | static int vax_g_doubles = 0; | |
213 | ||
d5263ab4 KR |
214 | /* Local symbol references (used to handle N_ABS symbols; gcc does not |
215 | generate those, but they're possible with hand-coded assembler input) | |
216 | are always made relative to some particular environment. If the current | |
217 | input has any such symbols, then we expect this to get incremented | |
218 | exactly once and end up having all of them be in environment #0. */ | |
219 | ||
220 | static int Current_Environment = -1; | |
221 | ||
be9618de KR |
222 | |
223 | /* | |
224 | * Variable descriptors are used tell the debugger the data types of certain | |
225 | * more complicated variables (basically anything involving a structure, | |
226 | * union, enum, array or pointer). Some non-pointer variables of the | |
227 | * basic types that the debugger knows about do not require a variable | |
228 | * descriptor. | |
229 | * | |
230 | * Since it is impossible to have a variable descriptor longer than 128 | |
231 | * bytes by virtue of the way that the VMS object language is set up, | |
232 | * it makes not sense to make the arrays any longer than this, or worrying | |
233 | * about dynamic sizing of the array. | |
234 | * | |
235 | * These are the arrays and counters that we use to build a variable | |
236 | * descriptor. | |
237 | */ | |
238 | ||
239 | #define MAX_DEBUG_RECORD 128 | |
240 | static char Local[MAX_DEBUG_RECORD]; /* buffer for variable descriptor */ | |
241 | static char Asuffix[MAX_DEBUG_RECORD]; /* buffer for array descriptor */ | |
242 | static int Lpnt; /* index into Local */ | |
243 | static int Apoint; /* index into Asuffix */ | |
244 | static char overflow; /* flag to indicate we have written too much*/ | |
245 | static int total_len; /* used to calculate the total length of variable | |
246 | descriptor plus array descriptor - used for len byte*/ | |
247 | ||
248 | /* Flag if we have told user about finding global constants in the text | |
249 | section. */ | |
3c650d09 | 250 | static int gave_compiler_message = 0; |
be9618de | 251 | |
be9618de KR |
252 | |
253 | /* | |
254 | * Global data (Object records limited to 512 bytes by VAX-11 "C" runtime) | |
255 | */ | |
256 | static int VMS_Object_File_FD; /* File Descriptor for object file */ | |
257 | static char Object_Record_Buffer[512]; /* Buffer for object file records */ | |
258 | static int Object_Record_Offset;/* Offset to end of data */ | |
259 | static int Current_Object_Record_Type; /* Type of record in above */ | |
260 | ||
494a6c05 KR |
261 | /* |
262 | * Macros for moving data around. Must work on big-endian systems. | |
263 | */ | |
b9419dd2 | 264 | #ifdef VMS /* These are more efficient for VMS->VMS systems */ |
494a6c05 KR |
265 | #define COPY_LONG(dest,val) {*(long *) dest = val; } |
266 | #define COPY_SHORT(dest,val) {*(short *) dest = val; } | |
267 | #else | |
268 | #define COPY_LONG(dest,val) { md_number_to_chars(dest, val, 4); } | |
269 | #define COPY_SHORT(dest,val) { md_number_to_chars(dest, val, 2); } | |
270 | #endif | |
be9618de KR |
271 | /* |
272 | * Macros for placing data into the object record buffer | |
273 | */ | |
be9618de | 274 | #define PUT_LONG(val) \ |
3c650d09 | 275 | { COPY_LONG(&Object_Record_Buffer[Object_Record_Offset], val); \ |
be9618de KR |
276 | Object_Record_Offset += 4; } |
277 | ||
278 | #define PUT_SHORT(val) \ | |
3c650d09 | 279 | { COPY_SHORT(&Object_Record_Buffer[Object_Record_Offset], val); \ |
be9618de KR |
280 | Object_Record_Offset += 2; } |
281 | ||
282 | #define PUT_CHAR(val) Object_Record_Buffer[Object_Record_Offset++] = val | |
283 | ||
284 | #define PUT_COUNTED_STRING(cp) {\ | |
f2224fe2 | 285 | register const char *p = cp; \ |
be9618de KR |
286 | PUT_CHAR(strlen(p)); \ |
287 | while (*p) PUT_CHAR(*p++);} | |
288 | ||
289 | /* | |
290 | * Macro for determining if a Name has psect attributes attached | |
291 | * to it. | |
292 | */ | |
293 | #define PSECT_ATTRIBUTES_STRING "$$PsectAttributes_" | |
294 | #define PSECT_ATTRIBUTES_STRING_LENGTH 18 | |
295 | ||
296 | #define HAS_PSECT_ATTRIBUTES(Name) \ | |
297 | (strncmp((Name[0] == '_' ? Name + 1 : Name), \ | |
298 | PSECT_ATTRIBUTES_STRING, \ | |
299 | PSECT_ATTRIBUTES_STRING_LENGTH) == 0) | |
300 | \f | |
301 | ||
302 | /* in: segT out: N_TYPE bits */ | |
303 | const short seg_N_TYPE[] = | |
304 | { | |
305 | N_ABS, | |
306 | N_TEXT, | |
307 | N_DATA, | |
308 | N_BSS, | |
309 | N_UNDF, /* unknown */ | |
be9618de | 310 | N_UNDF, /* error */ |
5ac34ac3 | 311 | N_UNDF, /* expression */ |
be9618de KR |
312 | N_UNDF, /* debug */ |
313 | N_UNDF, /* ntv */ | |
314 | N_UNDF, /* ptv */ | |
315 | N_REGISTER, /* register */ | |
316 | }; | |
317 | ||
318 | const segT N_TYPE_seg[N_TYPE + 2] = | |
319 | { /* N_TYPE == 0x1E = 32-2 */ | |
320 | SEG_UNKNOWN, /* N_UNDF == 0 */ | |
321 | SEG_GOOF, | |
322 | SEG_ABSOLUTE, /* N_ABS == 2 */ | |
323 | SEG_GOOF, | |
324 | SEG_TEXT, /* N_TEXT == 4 */ | |
325 | SEG_GOOF, | |
326 | SEG_DATA, /* N_DATA == 6 */ | |
327 | SEG_GOOF, | |
328 | SEG_BSS, /* N_BSS == 8 */ | |
329 | SEG_GOOF, | |
330 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
331 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
332 | SEG_GOOF, SEG_GOOF, SEG_GOOF, SEG_GOOF, | |
333 | SEG_REGISTER, /* dummy N_REGISTER for regs = 30 */ | |
334 | SEG_GOOF, | |
335 | }; | |
336 | \f | |
337 | ||
4b18b7cd KR |
338 | /* Local support routines which return a value. */ |
339 | ||
340 | static struct input_file *find_file PARAMS ((symbolS *)); | |
341 | static struct VMS_DBG_Symbol *find_symbol PARAMS ((int)); | |
4596bc7a | 342 | static symbolS *Define_Routine PARAMS ((symbolS *,int,symbolS *,int)); |
4b18b7cd KR |
343 | |
344 | static char *cvt_integer PARAMS ((char *,int *)); | |
345 | static char *fix_name PARAMS ((char *)); | |
346 | static char *get_struct_name PARAMS ((char *)); | |
347 | ||
348 | static int VMS_TBT_Source_File PARAMS ((char *,int)); | |
349 | static int gen1 PARAMS ((struct VMS_DBG_Symbol *,int)); | |
350 | static int forward_reference PARAMS ((char *)); | |
351 | static int final_forward_reference PARAMS ((struct VMS_DBG_Symbol *)); | |
352 | static int VMS_typedef_parse PARAMS ((char *)); | |
353 | static int hash_string PARAMS ((const char *)); | |
5700b874 | 354 | static int VMS_Psect_Spec PARAMS ((const char *,int,enum ps_type, |
4b18b7cd KR |
355 | struct VMS_Symbol *)); |
356 | static int VMS_Initialized_Data_Size PARAMS ((symbolS *,int)); | |
357 | ||
358 | /* Local support routines which don't directly return any value. */ | |
359 | ||
360 | static void s_const PARAMS ((int)); | |
361 | static void Create_VMS_Object_File PARAMS ((void)); | |
362 | static void Flush_VMS_Object_Record_Buffer PARAMS ((void)); | |
363 | static void Set_VMS_Object_File_Record PARAMS ((int)); | |
364 | static void Close_VMS_Object_File PARAMS ((void)); | |
365 | static void vms_tir_stack_psect PARAMS ((int,int,int)); | |
366 | static void VMS_Store_Immediate_Data PARAMS ((const char *,int,int)); | |
367 | static void VMS_Set_Data PARAMS ((int,int,int,int)); | |
368 | static void VMS_Store_Struct PARAMS ((int)); | |
369 | static void VMS_Def_Struct PARAMS ((int)); | |
370 | static void VMS_Set_Struct PARAMS ((int)); | |
371 | static void VMS_TBT_Module_Begin PARAMS ((void)); | |
372 | static void VMS_TBT_Module_End PARAMS ((void)); | |
373 | static void VMS_TBT_Routine_Begin PARAMS ((symbolS *,int)); | |
374 | static void VMS_TBT_Routine_End PARAMS ((int,symbolS *)); | |
375 | static void VMS_TBT_Block_Begin PARAMS ((symbolS *,int,char *)); | |
4596bc7a | 376 | static void VMS_TBT_Block_End PARAMS ((valueT)); |
4b18b7cd KR |
377 | static void VMS_TBT_Line_PC_Correlation PARAMS ((int,int,int,int)); |
378 | static void VMS_TBT_Source_Lines PARAMS ((int,int,int)); | |
379 | static void fpush PARAMS ((int,int)); | |
380 | static void rpush PARAMS ((int,int)); | |
381 | static void array_suffix PARAMS ((struct VMS_DBG_Symbol *)); | |
382 | static void new_forward_ref PARAMS ((int)); | |
383 | static void generate_suffix PARAMS ((struct VMS_DBG_Symbol *,int)); | |
384 | static void bitfield_suffix PARAMS ((struct VMS_DBG_Symbol *,int)); | |
385 | static void setup_basic_type PARAMS ((struct VMS_DBG_Symbol *)); | |
386 | static void VMS_DBG_record PARAMS ((struct VMS_DBG_Symbol *,int,int,char *)); | |
387 | static void VMS_local_stab_Parse PARAMS ((symbolS *)); | |
388 | static void VMS_stab_parse PARAMS ((symbolS *,int,int,int,int)); | |
389 | static void VMS_GSYM_Parse PARAMS ((symbolS *,int)); | |
390 | static void VMS_LCSYM_Parse PARAMS ((symbolS *,int)); | |
391 | static void VMS_STSYM_Parse PARAMS ((symbolS *,int)); | |
392 | static void VMS_RSYM_Parse PARAMS ((symbolS *,symbolS *,int)); | |
393 | static void VMS_LSYM_Parse PARAMS ((void)); | |
4596bc7a | 394 | static void Define_Local_Symbols PARAMS ((symbolS *,symbolS *,symbolS *,int)); |
4b18b7cd KR |
395 | static void Write_VMS_MHD_Records PARAMS ((void)); |
396 | static void Write_VMS_EOM_Record PARAMS ((int,int)); | |
397 | static void VMS_Case_Hack_Symbol PARAMS ((const char *,char *)); | |
398 | static void VMS_Modify_Psect_Attributes PARAMS ((const char *,int *)); | |
399 | static void VMS_Global_Symbol_Spec PARAMS ((const char *,int,int,int)); | |
400 | static void VMS_Local_Environment_Setup PARAMS ((const char *)); | |
401 | static void VMS_Emit_Globalvalues PARAMS ((unsigned,unsigned,char *)); | |
402 | static void VMS_Procedure_Entry_Pt PARAMS ((char *,int,int,int)); | |
403 | static void VMS_Set_Psect PARAMS ((int,int,int)); | |
404 | static void VMS_Store_Repeated_Data PARAMS ((int,char *,int,int)); | |
405 | static void VMS_Store_PIC_Symbol_Reference PARAMS ((symbolS *,int, | |
406 | int,int,int,int)); | |
407 | static void VMS_Fix_Indirect_Reference PARAMS ((int,int,fragS *,fragS *)); | |
0b415077 KR |
408 | |
409 | /* Support code which used to be inline within vms_write_object_file. */ | |
410 | static void vms_fixup_text_section PARAMS ((unsigned,struct frag *,struct frag *)); | |
411 | static void synthesize_data_segment PARAMS ((unsigned,unsigned,struct frag *)); | |
412 | static void vms_fixup_data_section PARAMS ((unsigned,unsigned)); | |
413 | static void global_symbol_directory PARAMS ((unsigned,unsigned)); | |
414 | static void local_symbols_DST PARAMS ((symbolS *,symbolS *)); | |
415 | static void vms_build_DST PARAMS ((unsigned)); | |
4b18b7cd KR |
416 | \f |
417 | ||
be9618de KR |
418 | /* The following code defines the special types of pseudo-ops that we |
419 | * use with VMS. | |
420 | */ | |
421 | ||
5700b874 | 422 | unsigned char const_flag = IN_DEFAULT_SECTION; |
be9618de | 423 | |
4b18b7cd KR |
424 | static void |
425 | s_const (arg) | |
426 | int arg; /* 3rd field from obj_pseudo_table[]; not needed here */ | |
be9618de | 427 | { |
4b18b7cd KR |
428 | /* Since we don't need `arg', use it as our scratch variable so that |
429 | we won't get any "not used" warnings about it. */ | |
430 | arg = get_absolute_expression (); | |
431 | subseg_set (SEG_DATA, (subsegT) arg); | |
be9618de KR |
432 | const_flag = 1; |
433 | demand_empty_rest_of_line (); | |
434 | } | |
435 | ||
be9618de KR |
436 | const pseudo_typeS obj_pseudo_table[] = |
437 | { | |
be9618de KR |
438 | {"const", s_const, 0}, |
439 | {0, 0, 0}, | |
be9618de KR |
440 | }; /* obj_pseudo_table */ |
441 | ||
db4e0f90 KR |
442 | int |
443 | vms_resolve_symbol_redef (sym) | |
444 | symbolS *sym; | |
445 | { | |
446 | /* | |
447 | * If the new symbol is .comm AND it has a size of zero, | |
448 | * we ignore it (i.e. the old symbol overrides it) | |
449 | */ | |
87e48495 KR |
450 | if (SEGMENT_TO_SYMBOL_TYPE ((int) now_seg) == (N_UNDF | N_EXT) |
451 | && frag_now_fix () == 0) | |
db4e0f90 KR |
452 | { |
453 | as_warn ("compiler emitted zero-size common symbol `%s' already defined", | |
454 | S_GET_NAME (sym)); | |
455 | return 1; | |
456 | } | |
457 | /* | |
458 | * If the old symbol is .comm and it has a size of zero, | |
459 | * we override it with the new symbol value. | |
460 | */ | |
461 | if (S_IS_EXTERNAL(sym) && S_IS_DEFINED(sym) | |
462 | && (S_GET_VALUE(sym) == 0)) | |
463 | { | |
464 | as_warn ("compiler redefined zero-size common symbol `%s'", | |
465 | S_GET_NAME (sym)); | |
466 | sym->sy_frag = frag_now; | |
a9918088 | 467 | S_SET_OTHER(sym, const_flag); |
87e48495 | 468 | S_SET_VALUE(sym, frag_now_fix ()); |
db4e0f90 KR |
469 | /* Keep N_EXT bit. */ |
470 | sym->sy_symbol.n_type |= SEGMENT_TO_SYMBOL_TYPE((int) now_seg); | |
471 | return 1; | |
472 | } | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
a9918088 KR |
477 | /* `tc_frob_label' handler for colon(symbols.c), used to examine the |
478 | dummy label(s) gcc inserts at the beginning of each file it generates. | |
479 | gcc 1.x put "gcc_compiled."; gcc 2.x (as of 2.6) puts "gcc2_compiled." | |
480 | and "__gnu_language_<name>" and possibly "__vax_<type>_doubles". */ | |
481 | ||
482 | void | |
483 | vms_check_for_special_label (symbolP) | |
484 | symbolS *symbolP; | |
485 | { | |
486 | /* Special labels only occur prior to explicit section directives. */ | |
487 | if ((const_flag & IN_DEFAULT_SECTION) != 0) | |
488 | { | |
489 | char *sym_name = S_GET_NAME(symbolP); | |
490 | ||
491 | if (*sym_name == '_') | |
492 | ++sym_name; | |
493 | ||
494 | if (!strcmp (sym_name, "__vax_g_doubles")) | |
495 | vax_g_doubles = 1; | |
496 | #if 0 /* not necessary */ | |
497 | else if (!strcmp (sym_name, "__vax_d_doubles")) | |
498 | vax_g_doubles = 0; | |
499 | #endif | |
500 | #if 0 /* these are potential alternatives to tc-vax.c's md_parse_options() */ | |
501 | else if (!strcmp (sym_name, "gcc_compiled.")) | |
502 | flag_one = 1; | |
503 | else if (!strcmp (sym_name, "__gnu_language_cplusplus")) | |
504 | flag_hash_long_names = 1; | |
505 | #endif | |
506 | } | |
507 | return; | |
508 | } | |
db4e0f90 | 509 | |
be9618de KR |
510 | void |
511 | obj_read_begin_hook () | |
512 | { | |
8e86815b | 513 | return; |
c999fd9f | 514 | } |
be9618de | 515 | |
58abad7d | 516 | void |
be9618de KR |
517 | obj_crawl_symbol_chain (headers) |
518 | object_headers *headers; | |
519 | { | |
520 | symbolS *symbolP; | |
521 | symbolS **symbolPP; | |
58abad7d | 522 | int symbol_number = 0; |
be9618de | 523 | |
58abad7d KR |
524 | symbolPP = &symbol_rootP; /* -> last symbol chain link. */ |
525 | while ((symbolP = *symbolPP) != NULL) | |
be9618de | 526 | { |
58abad7d KR |
527 | resolve_symbol_value (symbolP); |
528 | ||
529 | /* OK, here is how we decide which symbols go out into the | |
530 | brave new symtab. Symbols that do are: | |
531 | ||
532 | * symbols with no name (stabd's?) | |
533 | * symbols with debug info in their N_TYPE | |
534 | * symbols with \1 as their 3rd character (numeric labels) | |
535 | * "local labels" needed for PIC fixups | |
536 | ||
537 | Symbols that don't are: | |
538 | * symbols that are registers | |
539 | ||
540 | All other symbols are output. We complain if a deleted | |
541 | symbol was marked external. */ | |
542 | ||
543 | if (!S_IS_REGISTER (symbolP)) | |
be9618de | 544 | { |
58abad7d KR |
545 | symbolP->sy_number = symbol_number++; |
546 | symbolP->sy_name_offset = 0; | |
547 | symbolPP = &(symbol_next (symbolP)); | |
548 | } | |
549 | else | |
550 | { | |
551 | if (S_IS_EXTERNAL (symbolP) || !S_IS_DEFINED (symbolP)) | |
be9618de | 552 | { |
58abad7d KR |
553 | as_bad ("Local symbol %s never defined", S_GET_NAME (symbolP)); |
554 | } /* oops. */ | |
be9618de | 555 | |
58abad7d KR |
556 | /* Unhook it from the chain. */ |
557 | *symbolPP = symbol_next (symbolP); | |
558 | } /* if this symbol should be in the output */ | |
be9618de | 559 | |
58abad7d KR |
560 | } /* for each symbol */ |
561 | ||
562 | H_SET_STRING_SIZE (headers, string_byte_count); | |
563 | H_SET_SYMBOL_TABLE_SIZE (headers, symbol_number); | |
be9618de KR |
564 | } /* obj_crawl_symbol_chain() */ |
565 | \f | |
566 | ||
567 | /****** VMS OBJECT FILE HACKING ROUTINES *******/ | |
568 | ||
569 | ||
570 | /* | |
571 | * Create the VMS object file | |
572 | */ | |
8e86815b | 573 | static void |
be9618de KR |
574 | Create_VMS_Object_File () |
575 | { | |
b9419dd2 | 576 | #if defined(eunice) || !defined(VMS) |
be9618de KR |
577 | VMS_Object_File_FD = creat (out_file_name, 0777, "var"); |
578 | #else /* eunice */ | |
579 | VMS_Object_File_FD = creat (out_file_name, 0, "rfm=var", | |
580 | "mbc=16", "deq=64", "fop=tef", "shr=nil"); | |
581 | #endif /* eunice */ | |
582 | /* | |
583 | * Deal with errors | |
584 | */ | |
585 | if (VMS_Object_File_FD < 0) | |
703139a8 | 586 | as_fatal ("Couldn't create VMS object file \"%s\"", out_file_name); |
be9618de KR |
587 | /* |
588 | * Initialize object file hacking variables | |
589 | */ | |
590 | Object_Record_Offset = 0; | |
591 | Current_Object_Record_Type = -1; | |
592 | } | |
593 | \f | |
594 | ||
595 | /* | |
596 | * Flush the object record buffer to the object file | |
597 | */ | |
8e86815b | 598 | static void |
be9618de KR |
599 | Flush_VMS_Object_Record_Buffer () |
600 | { | |
601 | int i; | |
8e86815b | 602 | #ifndef VMS |
be9618de | 603 | short int zero; |
494a6c05 | 604 | int RecLen; |
8e86815b KR |
605 | #endif |
606 | ||
be9618de KR |
607 | /* |
608 | * If the buffer is empty, we are done | |
609 | */ | |
610 | if (Object_Record_Offset == 0) | |
611 | return; | |
612 | /* | |
613 | * Write the data to the file | |
614 | */ | |
b9419dd2 | 615 | #ifndef VMS /* For cross-assembly purposes. */ |
494a6c05 KR |
616 | md_number_to_chars((char *) &RecLen, Object_Record_Offset, 2); |
617 | i = write (VMS_Object_File_FD, &RecLen, 2); | |
b9419dd2 | 618 | #endif /* not VMS */ |
be9618de KR |
619 | i = write (VMS_Object_File_FD, |
620 | Object_Record_Buffer, | |
621 | Object_Record_Offset); | |
622 | if (i != Object_Record_Offset) | |
623 | error ("I/O error writing VMS object file"); | |
b9419dd2 | 624 | #ifndef VMS /* When cross-assembling, we need to pad the record to an even |
be9618de KR |
625 | number of bytes. */ |
626 | /* pad it if needed */ | |
627 | zero = 0; | |
8e86815b | 628 | if ((Object_Record_Offset & 1) != 0) |
be9618de | 629 | write (VMS_Object_File_FD, &zero, 1); |
b9419dd2 | 630 | #endif /* not VMS */ |
be9618de KR |
631 | /* |
632 | * The buffer is now empty | |
633 | */ | |
634 | Object_Record_Offset = 0; | |
635 | } | |
636 | \f | |
637 | ||
638 | /* | |
639 | * Declare a particular type of object file record | |
640 | */ | |
8e86815b | 641 | static void |
be9618de KR |
642 | Set_VMS_Object_File_Record (Type) |
643 | int Type; | |
644 | { | |
645 | /* | |
646 | * If the type matches, we are done | |
647 | */ | |
648 | if (Type == Current_Object_Record_Type) | |
649 | return; | |
650 | /* | |
651 | * Otherwise: flush the buffer | |
652 | */ | |
653 | Flush_VMS_Object_Record_Buffer (); | |
654 | /* | |
655 | * Set the new type | |
656 | */ | |
657 | Current_Object_Record_Type = Type; | |
658 | } | |
659 | \f | |
660 | ||
661 | ||
662 | /* | |
663 | * Close the VMS Object file | |
664 | */ | |
8e86815b | 665 | static void |
be9618de KR |
666 | Close_VMS_Object_File () |
667 | { | |
b9419dd2 | 668 | #ifndef VMS /* For cross-assembly purposes. */ |
8e86815b KR |
669 | short int m_one = -1; |
670 | ||
671 | /* Write a record-length field of 0xffff into the file, which means | |
672 | end-of-file when read later. It is only needed for variable-length | |
673 | record files transferred to VMS as fixed-length record files | |
674 | (typical for binary ftp). */ | |
be9618de | 675 | write (VMS_Object_File_FD, &m_one, 2); |
8e86815b KR |
676 | #else |
677 | /* When written on a VMS system, the file header (cf inode) will record | |
678 | the actual end-of-file position and no inline marker is needed. */ | |
679 | #endif | |
680 | ||
be9618de KR |
681 | close (VMS_Object_File_FD); |
682 | } | |
683 | \f | |
684 | ||
b003a2d9 KR |
685 | /* |
686 | * Stack Psect base followed by signed, varying-sized offset. | |
687 | * Common to several object records. | |
688 | */ | |
689 | static void | |
690 | vms_tir_stack_psect (Psect_Index, Offset, Force) | |
691 | int Psect_Index; | |
692 | int Offset; | |
693 | int Force; | |
694 | { | |
695 | int psect_width, offset_width; | |
696 | ||
697 | psect_width = ((unsigned) Psect_Index > 255) ? 2 : 1; | |
698 | offset_width = (Force || Offset > 32767 || Offset < -32768) ? 4 | |
699 | : (Offset > 127 || Offset < -128) ? 2 : 1; | |
700 | #define Sta_P(p,o) (((o)<<1) | ((p)-1)) | |
3c650d09 | 701 | /* byte or word psect; byte, word, or longword offset */ |
b003a2d9 KR |
702 | switch (Sta_P(psect_width,offset_width)) |
703 | { | |
704 | case Sta_P(1,1): PUT_CHAR (TIR_S_C_STA_PB); | |
705 | PUT_CHAR ((char)(unsigned char) Psect_Index); | |
706 | PUT_CHAR ((char) Offset); | |
707 | break; | |
708 | case Sta_P(1,2): PUT_CHAR (TIR_S_C_STA_PW); | |
709 | PUT_CHAR ((char)(unsigned char) Psect_Index); | |
710 | PUT_SHORT (Offset); | |
711 | break; | |
712 | case Sta_P(1,4): PUT_CHAR (TIR_S_C_STA_PL); | |
713 | PUT_CHAR ((char)(unsigned char) Psect_Index); | |
714 | PUT_LONG (Offset); | |
715 | break; | |
716 | case Sta_P(2,1): PUT_CHAR (TIR_S_C_STA_WPB); | |
717 | PUT_SHORT (Psect_Index); | |
718 | PUT_CHAR ((char) Offset); | |
719 | break; | |
720 | case Sta_P(2,2): PUT_CHAR (TIR_S_C_STA_WPW); | |
721 | PUT_SHORT (Psect_Index); | |
722 | PUT_SHORT (Offset); | |
723 | break; | |
724 | case Sta_P(2,4): PUT_CHAR (TIR_S_C_STA_WPL); | |
725 | PUT_SHORT (Psect_Index); | |
726 | PUT_LONG (Offset); | |
727 | break; | |
728 | } | |
729 | #undef Sta_P | |
730 | } | |
731 | ||
be9618de KR |
732 | /* |
733 | * Store immediate data in current Psect | |
734 | */ | |
8e86815b | 735 | static void |
be9618de | 736 | VMS_Store_Immediate_Data (Pointer, Size, Record_Type) |
4b18b7cd | 737 | const char *Pointer; |
be9618de KR |
738 | int Size; |
739 | int Record_Type; | |
740 | { | |
741 | register int i; | |
742 | ||
743 | /* | |
744 | * We are writing a "Record_Type" record | |
745 | */ | |
746 | Set_VMS_Object_File_Record (Record_Type); | |
747 | /* | |
748 | * We can only store 128 bytes at a time | |
749 | */ | |
750 | while (Size > 0) | |
751 | { | |
752 | /* | |
753 | * Store a maximum of 128 bytes | |
754 | */ | |
755 | i = (Size > 128) ? 128 : Size; | |
756 | Size -= i; | |
757 | /* | |
758 | * If we cannot accommodate this record, flush the | |
759 | * buffer. | |
760 | */ | |
3c650d09 | 761 | if ((Object_Record_Offset + i + 1) >= sizeof (Object_Record_Buffer)) |
be9618de KR |
762 | Flush_VMS_Object_Record_Buffer (); |
763 | /* | |
764 | * If the buffer is empty we must insert record type | |
765 | */ | |
766 | if (Object_Record_Offset == 0) | |
767 | PUT_CHAR (Record_Type); | |
768 | /* | |
769 | * Store the count | |
770 | */ | |
771 | PUT_CHAR (-i & 0xff); | |
772 | /* | |
773 | * Store the data | |
774 | */ | |
775 | while (--i >= 0) | |
776 | PUT_CHAR (*Pointer++); | |
be9618de | 777 | } |
3c650d09 KR |
778 | /* |
779 | * Flush the buffer if it is more than 75% full. | |
780 | */ | |
781 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
782 | Flush_VMS_Object_Record_Buffer (); | |
be9618de KR |
783 | } |
784 | ||
785 | /* | |
786 | * Make a data reference | |
787 | */ | |
8e86815b | 788 | static void |
be9618de KR |
789 | VMS_Set_Data (Psect_Index, Offset, Record_Type, Force) |
790 | int Psect_Index; | |
791 | int Offset; | |
792 | int Record_Type; | |
793 | int Force; | |
794 | { | |
795 | /* | |
796 | * We are writing a "Record_Type" record | |
797 | */ | |
798 | Set_VMS_Object_File_Record (Record_Type); | |
799 | /* | |
800 | * If the buffer is empty we must insert the record type | |
801 | */ | |
802 | if (Object_Record_Offset == 0) | |
803 | PUT_CHAR (Record_Type); | |
804 | /* | |
b003a2d9 | 805 | * Stack the Psect base with its offset |
be9618de | 806 | */ |
b003a2d9 | 807 | vms_tir_stack_psect (Psect_Index, Offset, Force); |
be9618de KR |
808 | /* |
809 | * Set relocation base | |
810 | */ | |
811 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
812 | /* | |
813 | * Flush the buffer if it is more than 75% full | |
814 | */ | |
3c650d09 | 815 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
816 | Flush_VMS_Object_Record_Buffer (); |
817 | } | |
818 | ||
819 | /* | |
820 | * Make a debugger reference to a struct, union or enum. | |
821 | */ | |
8e86815b | 822 | static void |
db4e0f90 KR |
823 | VMS_Store_Struct (Struct_Index) |
824 | int Struct_Index; | |
be9618de KR |
825 | { |
826 | /* | |
827 | * We are writing a "OBJ_S_C_DBG" record | |
828 | */ | |
829 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
830 | /* | |
831 | * If the buffer is empty we must insert the record type | |
832 | */ | |
833 | if (Object_Record_Offset == 0) | |
834 | PUT_CHAR (OBJ_S_C_DBG); | |
835 | PUT_CHAR (TIR_S_C_STA_UW); | |
836 | PUT_SHORT (Struct_Index); | |
837 | PUT_CHAR (TIR_S_C_CTL_STKDL); | |
838 | PUT_CHAR (TIR_S_C_STO_L); | |
839 | /* | |
840 | * Flush the buffer if it is more than 75% full | |
841 | */ | |
3c650d09 | 842 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
843 | Flush_VMS_Object_Record_Buffer (); |
844 | } | |
845 | ||
846 | /* | |
847 | * Make a debugger reference to partially define a struct, union or enum. | |
848 | */ | |
8e86815b | 849 | static void |
db4e0f90 KR |
850 | VMS_Def_Struct (Struct_Index) |
851 | int Struct_Index; | |
be9618de KR |
852 | { |
853 | /* | |
854 | * We are writing a "OBJ_S_C_DBG" record | |
855 | */ | |
856 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
857 | /* | |
858 | * If the buffer is empty we must insert the record type | |
859 | */ | |
860 | if (Object_Record_Offset == 0) | |
861 | PUT_CHAR (OBJ_S_C_DBG); | |
862 | PUT_CHAR (TIR_S_C_STA_UW); | |
863 | PUT_SHORT (Struct_Index); | |
864 | PUT_CHAR (TIR_S_C_CTL_DFLOC); | |
865 | /* | |
866 | * Flush the buffer if it is more than 75% full | |
867 | */ | |
3c650d09 | 868 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
869 | Flush_VMS_Object_Record_Buffer (); |
870 | } | |
871 | ||
8e86815b | 872 | static void |
db4e0f90 KR |
873 | VMS_Set_Struct (Struct_Index) |
874 | int Struct_Index; | |
be9618de KR |
875 | { /* see previous functions for comments */ |
876 | Set_VMS_Object_File_Record (OBJ_S_C_DBG); | |
877 | if (Object_Record_Offset == 0) | |
878 | PUT_CHAR (OBJ_S_C_DBG); | |
879 | PUT_CHAR (TIR_S_C_STA_UW); | |
880 | PUT_SHORT (Struct_Index); | |
881 | PUT_CHAR (TIR_S_C_CTL_STLOC); | |
3c650d09 | 882 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
883 | Flush_VMS_Object_Record_Buffer (); |
884 | } | |
885 | \f | |
886 | /* | |
887 | * Write the Traceback Module Begin record | |
888 | */ | |
8e86815b | 889 | static void |
be9618de KR |
890 | VMS_TBT_Module_Begin () |
891 | { | |
892 | register char *cp, *cp1; | |
893 | int Size; | |
894 | char Module_Name[256]; | |
895 | char Local[256]; | |
896 | ||
897 | /* | |
898 | * Get module name (the FILENAME part of the object file) | |
899 | */ | |
900 | cp = out_file_name; | |
901 | cp1 = Module_Name; | |
902 | while (*cp) | |
903 | { | |
904 | if ((*cp == ']') || (*cp == '>') || | |
905 | (*cp == ':') || (*cp == '/')) | |
906 | { | |
907 | cp1 = Module_Name; | |
908 | cp++; | |
909 | continue; | |
910 | } | |
911 | *cp1++ = islower (*cp) ? toupper (*cp++) : *cp++; | |
912 | } | |
913 | *cp1 = 0; | |
914 | /* | |
915 | * Limit it to 31 characters | |
916 | */ | |
917 | while (--cp1 >= Module_Name) | |
918 | if (*cp1 == '.') | |
919 | *cp1 = 0; | |
920 | if (strlen (Module_Name) > 31) | |
921 | { | |
def66e24 | 922 | if (flag_hash_long_names) |
703139a8 | 923 | as_tsktsk ("Module name truncated: %s", Module_Name); |
be9618de KR |
924 | Module_Name[31] = 0; |
925 | } | |
926 | /* | |
927 | * Arrange to store the data locally (leave room for size byte) | |
928 | */ | |
929 | cp = Local + 1; | |
930 | /* | |
931 | * Begin module | |
932 | */ | |
933 | *cp++ = DST_S_C_MODBEG; | |
934 | /* | |
935 | * Unused | |
936 | */ | |
937 | *cp++ = 0; | |
938 | /* | |
939 | * Language type == "C" | |
940 | */ | |
494a6c05 | 941 | COPY_LONG (cp, DST_S_C_C); |
703139a8 | 942 | cp += 4; |
be9618de KR |
943 | /* |
944 | * Store the module name | |
945 | */ | |
946 | *cp++ = strlen (Module_Name); | |
947 | cp1 = Module_Name; | |
948 | while (*cp1) | |
949 | *cp++ = *cp1++; | |
950 | /* | |
951 | * Now we can store the record size | |
952 | */ | |
953 | Size = (cp - Local); | |
954 | Local[0] = Size - 1; | |
955 | /* | |
956 | * Put it into the object record | |
957 | */ | |
958 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); | |
959 | } | |
960 | \f | |
961 | ||
962 | /* | |
963 | * Write the Traceback Module End record | |
964 | */ | |
8e86815b | 965 | static void |
be9618de KR |
966 | VMS_TBT_Module_End () |
967 | { | |
968 | char Local[2]; | |
969 | ||
970 | /* | |
971 | * End module | |
972 | */ | |
973 | Local[0] = 1; | |
974 | Local[1] = DST_S_C_MODEND; | |
975 | /* | |
976 | * Put it into the object record | |
977 | */ | |
978 | VMS_Store_Immediate_Data (Local, 2, OBJ_S_C_TBT); | |
979 | } | |
980 | \f | |
981 | ||
982 | /* | |
983 | * Write the Traceback Routine Begin record | |
984 | */ | |
8e86815b | 985 | static void |
be9618de | 986 | VMS_TBT_Routine_Begin (symbolP, Psect) |
4b18b7cd | 987 | symbolS *symbolP; |
be9618de KR |
988 | int Psect; |
989 | { | |
990 | register char *cp, *cp1; | |
991 | char *Name; | |
992 | int Offset; | |
993 | int Size; | |
994 | char Local[512]; | |
995 | ||
996 | /* | |
997 | * Strip the leading "_" from the name | |
998 | */ | |
999 | Name = S_GET_NAME (symbolP); | |
1000 | if (*Name == '_') | |
1001 | Name++; | |
1002 | /* | |
1003 | * Get the text psect offset | |
1004 | */ | |
1005 | Offset = S_GET_VALUE (symbolP); | |
1006 | /* | |
1007 | * Calculate the record size | |
1008 | */ | |
1009 | Size = 1 + 1 + 4 + 1 + strlen (Name); | |
1010 | /* | |
1011 | * Record Size | |
1012 | */ | |
1013 | Local[0] = Size; | |
1014 | /* | |
1015 | * Begin Routine | |
1016 | */ | |
1017 | Local[1] = DST_S_C_RTNBEG; | |
1018 | /* | |
1019 | * Uses CallS/CallG | |
1020 | */ | |
1021 | Local[2] = 0; | |
1022 | /* | |
1023 | * Store the data so far | |
1024 | */ | |
1025 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); | |
1026 | /* | |
1027 | * Make sure we are still generating a OBJ_S_C_TBT record | |
1028 | */ | |
1029 | if (Object_Record_Offset == 0) | |
1030 | PUT_CHAR (OBJ_S_C_TBT); | |
1031 | /* | |
b003a2d9 | 1032 | * Stack the address |
be9618de | 1033 | */ |
b003a2d9 | 1034 | vms_tir_stack_psect (Psect, Offset, 0); |
be9618de KR |
1035 | /* |
1036 | * Store the data reference | |
1037 | */ | |
1038 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
1039 | /* | |
1040 | * Store the counted string as data | |
1041 | */ | |
1042 | cp = Local; | |
1043 | cp1 = Name; | |
1044 | Size = strlen (cp1) + 1; | |
1045 | *cp++ = Size - 1; | |
1046 | while (*cp1) | |
1047 | *cp++ = *cp1++; | |
1048 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_TBT); | |
1049 | } | |
1050 | \f | |
1051 | ||
1052 | /* | |
1053 | * Write the Traceback Routine End record | |
1054 | * We *must* search the symbol table to find the next routine, since | |
1055 | * the assember has a way of reassembling the symbol table OUT OF ORDER | |
1056 | * Thus the next routine in the symbol list is not necessarily the | |
1057 | * next one in memory. For debugging to work correctly we must know the | |
1058 | * size of the routine. | |
1059 | */ | |
8e86815b | 1060 | static void |
be9618de KR |
1061 | VMS_TBT_Routine_End (Max_Size, sp) |
1062 | int Max_Size; | |
1063 | symbolS *sp; | |
1064 | { | |
1065 | symbolS *symbolP; | |
1066 | int Size = 0x7fffffff; | |
1067 | char Local[16]; | |
a9918088 | 1068 | valueT sym_value, sp_value = S_GET_VALUE (sp); |
be9618de KR |
1069 | |
1070 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
1071 | { | |
1072 | if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) | |
1073 | { | |
1074 | if (*S_GET_NAME (symbolP) == 'L') | |
1075 | continue; | |
a9918088 KR |
1076 | sym_value = S_GET_VALUE (symbolP); |
1077 | if (sym_value > sp_value && sym_value < Size) | |
1078 | Size = sym_value; | |
1079 | ||
1080 | /* | |
1081 | * Dummy labels like "gcc_compiled." should no longer reach here. | |
1082 | */ | |
1083 | #if 0 | |
1084 | else | |
be9618de | 1085 | /* check if gcc_compiled. has size of zero */ |
a9918088 | 1086 | if (sym_value == sp_value && |
be9618de KR |
1087 | sp != symbolP && |
1088 | (!strcmp (S_GET_NAME (sp), "gcc_compiled.") || | |
1089 | !strcmp (S_GET_NAME (sp), "gcc2_compiled."))) | |
a9918088 KR |
1090 | Size = sym_value; |
1091 | #endif | |
c06e55d9 KR |
1092 | } |
1093 | } | |
be9618de KR |
1094 | if (Size == 0x7fffffff) |
1095 | Size = Max_Size; | |
a9918088 | 1096 | Size -= sp_value; /* and get the size of the routine */ |
be9618de KR |
1097 | /* |
1098 | * Record Size | |
1099 | */ | |
1100 | Local[0] = 6; | |
1101 | /* | |
1102 | * End of Routine | |
1103 | */ | |
1104 | Local[1] = DST_S_C_RTNEND; | |
1105 | /* | |
1106 | * Unused | |
1107 | */ | |
1108 | Local[2] = 0; | |
1109 | /* | |
1110 | * Size of routine | |
1111 | */ | |
494a6c05 | 1112 | COPY_LONG (&Local[3], Size); |
be9618de KR |
1113 | /* |
1114 | * Store the record | |
1115 | */ | |
1116 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); | |
1117 | } | |
1118 | ||
1119 | /* | |
1120 | * Write the Traceback Block End record | |
1121 | */ | |
8e86815b | 1122 | static void |
be9618de | 1123 | VMS_TBT_Block_Begin (symbolP, Psect, Name) |
4b18b7cd | 1124 | symbolS *symbolP; |
be9618de KR |
1125 | int Psect; |
1126 | char *Name; | |
1127 | { | |
1128 | register char *cp, *cp1; | |
1129 | int Offset; | |
1130 | int Size; | |
1131 | char Local[512]; | |
1132 | /* | |
1133 | * Begin block | |
1134 | */ | |
1135 | Size = 1 + 1 + 4 + 1 + strlen (Name); | |
1136 | /* | |
1137 | * Record Size | |
1138 | */ | |
1139 | Local[0] = Size; | |
1140 | /* | |
1141 | * Begin Block - We simulate with a phony routine | |
1142 | */ | |
1143 | Local[1] = DST_S_C_BLKBEG; | |
1144 | /* | |
1145 | * Uses CallS/CallG | |
1146 | */ | |
1147 | Local[2] = 0; | |
1148 | /* | |
1149 | * Store the data so far | |
1150 | */ | |
1151 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_DBG); | |
1152 | /* | |
1153 | * Make sure we are still generating a OBJ_S_C_DBG record | |
1154 | */ | |
1155 | if (Object_Record_Offset == 0) | |
1156 | PUT_CHAR (OBJ_S_C_DBG); | |
1157 | /* | |
1158 | * Now get the symbol address | |
1159 | */ | |
1160 | PUT_CHAR (TIR_S_C_STA_WPL); | |
1161 | PUT_SHORT (Psect); | |
1162 | /* | |
1163 | * Get the text psect offset | |
1164 | */ | |
1165 | Offset = S_GET_VALUE (symbolP); | |
1166 | PUT_LONG (Offset); | |
1167 | /* | |
1168 | * Store the data reference | |
1169 | */ | |
1170 | PUT_CHAR (TIR_S_C_STO_PIDR); | |
1171 | /* | |
1172 | * Store the counted string as data | |
1173 | */ | |
1174 | cp = Local; | |
1175 | cp1 = Name; | |
1176 | Size = strlen (cp1) + 1; | |
1177 | *cp++ = Size - 1; | |
1178 | while (*cp1) | |
1179 | *cp++ = *cp1++; | |
1180 | VMS_Store_Immediate_Data (Local, Size, OBJ_S_C_DBG); | |
1181 | } | |
1182 | \f | |
1183 | ||
1184 | /* | |
1185 | * Write the Traceback Block End record | |
1186 | */ | |
8e86815b | 1187 | static void |
db4e0f90 | 1188 | VMS_TBT_Block_End (Size) |
4596bc7a | 1189 | valueT Size; |
be9618de KR |
1190 | { |
1191 | char Local[16]; | |
1192 | ||
1193 | /* | |
1194 | * End block - simulate with a phony end routine | |
1195 | */ | |
1196 | Local[0] = 6; | |
1197 | Local[1] = DST_S_C_BLKEND; | |
3c650d09 | 1198 | Local[2] = 0; /* unused, must be zero */ |
494a6c05 | 1199 | COPY_LONG (&Local[3], Size); |
be9618de KR |
1200 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_DBG); |
1201 | } | |
1202 | \f | |
1203 | ||
1204 | ||
1205 | /* | |
1206 | * Write a Line number / PC correlation record | |
1207 | */ | |
8e86815b | 1208 | static void |
be9618de KR |
1209 | VMS_TBT_Line_PC_Correlation (Line_Number, Offset, Psect, Do_Delta) |
1210 | int Line_Number; | |
1211 | int Offset; | |
1212 | int Psect; | |
1213 | int Do_Delta; | |
1214 | { | |
1215 | register char *cp; | |
1216 | char Local[64]; | |
1217 | ||
1218 | /* | |
1219 | * If not delta, set our PC/Line number correlation | |
1220 | */ | |
1221 | if (Do_Delta == 0) | |
1222 | { | |
1223 | /* | |
1224 | * Size | |
1225 | */ | |
1226 | Local[0] = 1 + 1 + 2 + 1 + 4; | |
1227 | /* | |
1228 | * Line Number/PC correlation | |
1229 | */ | |
1230 | Local[1] = DST_S_C_LINE_NUM; | |
1231 | /* | |
1232 | * Set Line number | |
1233 | */ | |
1234 | Local[2] = DST_S_C_SET_LINE_NUM; | |
494a6c05 | 1235 | COPY_SHORT (&Local[3], Line_Number - 1); |
be9618de KR |
1236 | /* |
1237 | * Set PC | |
1238 | */ | |
1239 | Local[5] = DST_S_C_SET_ABS_PC; | |
1240 | VMS_Store_Immediate_Data (Local, 6, OBJ_S_C_TBT); | |
1241 | /* | |
1242 | * Make sure we are still generating a OBJ_S_C_TBT record | |
1243 | */ | |
1244 | if (Object_Record_Offset == 0) | |
1245 | PUT_CHAR (OBJ_S_C_TBT); | |
b003a2d9 | 1246 | vms_tir_stack_psect (Psect, Offset, 0); |
be9618de KR |
1247 | PUT_CHAR (TIR_S_C_STO_PIDR); |
1248 | /* | |
1249 | * Do a PC offset of 0 to register the line number | |
1250 | */ | |
1251 | Local[0] = 2; | |
1252 | Local[1] = DST_S_C_LINE_NUM; | |
1253 | Local[2] = 0; /* Increment PC by 0 and register line # */ | |
1254 | VMS_Store_Immediate_Data (Local, 3, OBJ_S_C_TBT); | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | /* | |
1259 | * If Delta is negative, terminate the line numbers | |
1260 | */ | |
1261 | if (Do_Delta < 0) | |
1262 | { | |
1263 | Local[0] = 1 + 1 + 4; | |
1264 | Local[1] = DST_S_C_LINE_NUM; | |
1265 | Local[2] = DST_S_C_TERM_L; | |
494a6c05 | 1266 | COPY_LONG (&Local[3], Offset); |
be9618de KR |
1267 | VMS_Store_Immediate_Data (Local, 7, OBJ_S_C_TBT); |
1268 | /* | |
1269 | * Done | |
1270 | */ | |
1271 | return; | |
1272 | } | |
1273 | /* | |
1274 | * Do a PC/Line delta | |
1275 | */ | |
1276 | cp = Local + 1; | |
1277 | *cp++ = DST_S_C_LINE_NUM; | |
1278 | if (Line_Number > 1) | |
1279 | { | |
1280 | /* | |
1281 | * We need to increment the line number | |
1282 | */ | |
1283 | if (Line_Number - 1 <= 255) | |
1284 | { | |
1285 | *cp++ = DST_S_C_INCR_LINUM; | |
1286 | *cp++ = Line_Number - 1; | |
1287 | } | |
1288 | else | |
1289 | { | |
1290 | *cp++ = DST_S_C_INCR_LINUM_W; | |
494a6c05 | 1291 | COPY_SHORT (cp, Line_Number - 1); |
703139a8 | 1292 | cp += 2; |
be9618de KR |
1293 | } |
1294 | } | |
1295 | /* | |
1296 | * Increment the PC | |
1297 | */ | |
1298 | if (Offset <= 128) | |
1299 | { | |
1300 | *cp++ = -Offset; | |
1301 | } | |
1302 | else | |
1303 | { | |
1304 | if (Offset < 0x10000) | |
1305 | { | |
1306 | *cp++ = DST_S_C_DELTA_PC_W; | |
494a6c05 | 1307 | COPY_SHORT (cp, Offset); |
703139a8 | 1308 | cp += 2; |
be9618de KR |
1309 | } |
1310 | else | |
1311 | { | |
1312 | *cp++ = DST_S_C_DELTA_PC_L; | |
494a6c05 | 1313 | COPY_LONG (cp, Offset); |
703139a8 | 1314 | cp += 4; |
be9618de KR |
1315 | } |
1316 | } | |
1317 | Local[0] = cp - (Local + 1); | |
1318 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1319 | } | |
1320 | } | |
1321 | \f | |
1322 | ||
1323 | /* | |
1324 | * Describe a source file to the debugger | |
1325 | */ | |
8e86815b | 1326 | static int |
be9618de KR |
1327 | VMS_TBT_Source_File (Filename, ID_Number) |
1328 | char *Filename; | |
1329 | int ID_Number; | |
1330 | { | |
1331 | register char *cp, *cp1; | |
1332 | int Status, i; | |
1333 | char Local[512]; | |
b9419dd2 | 1334 | #ifndef VMS /* Used for cross-assembly */ |
be9618de | 1335 | i = strlen (Filename); |
b9419dd2 | 1336 | #else /* VMS */ |
be9618de KR |
1337 | static struct FAB Fab; |
1338 | static struct NAM Nam; | |
1339 | static struct XABDAT Date_Xab; | |
1340 | static struct XABFHC File_Header_Xab; | |
1341 | char Es_String[255], Rs_String[255]; | |
1342 | ||
1343 | /* | |
1344 | * Setup the Fab | |
1345 | */ | |
1346 | Fab.fab$b_bid = FAB$C_BID; | |
1347 | Fab.fab$b_bln = sizeof (Fab); | |
1348 | Fab.fab$l_nam = (&Nam); | |
1349 | Fab.fab$l_xab = (char *) &Date_Xab; | |
1350 | /* | |
1351 | * Setup the Nam block so we can find out the FULL name | |
1352 | * of the source file. | |
1353 | */ | |
1354 | Nam.nam$b_bid = NAM$C_BID; | |
1355 | Nam.nam$b_bln = sizeof (Nam); | |
1356 | Nam.nam$l_rsa = Rs_String; | |
1357 | Nam.nam$b_rss = sizeof (Rs_String); | |
1358 | Nam.nam$l_esa = Es_String; | |
1359 | Nam.nam$b_ess = sizeof (Es_String); | |
1360 | /* | |
1361 | * Setup the Date and File Header Xabs | |
1362 | */ | |
1363 | Date_Xab.xab$b_cod = XAB$C_DAT; | |
1364 | Date_Xab.xab$b_bln = sizeof (Date_Xab); | |
1365 | Date_Xab.xab$l_nxt = (char *) &File_Header_Xab; | |
1366 | File_Header_Xab.xab$b_cod = XAB$C_FHC; | |
1367 | File_Header_Xab.xab$b_bln = sizeof (File_Header_Xab); | |
1368 | /* | |
1369 | * Get the file information | |
1370 | */ | |
1371 | Fab.fab$l_fna = Filename; | |
1372 | Fab.fab$b_fns = strlen (Filename); | |
1373 | Status = sys$open (&Fab); | |
1374 | if (!(Status & 1)) | |
1375 | { | |
703139a8 KR |
1376 | as_tsktsk ("Couldn't find source file \"%s\", status=%%X%x", |
1377 | Filename, Status); | |
be9618de KR |
1378 | return (0); |
1379 | } | |
1380 | sys$close (&Fab); | |
1381 | /* | |
1382 | * Calculate the size of the resultant string | |
1383 | */ | |
1384 | i = Nam.nam$b_rsl; | |
b9419dd2 | 1385 | #endif /* VMS */ |
be9618de KR |
1386 | /* |
1387 | * Size of record | |
1388 | */ | |
1389 | Local[0] = 1 + 1 + 1 + 1 + 1 + 2 + 8 + 4 + 2 + 1 + 1 + i + 1; | |
1390 | /* | |
1391 | * Source declaration | |
1392 | */ | |
1393 | Local[1] = DST_S_C_SOURCE; | |
1394 | /* | |
1395 | * Make formfeeds count as source records | |
1396 | */ | |
1397 | Local[2] = DST_S_C_SRC_FORMFEED; | |
1398 | /* | |
1399 | * Declare source file | |
1400 | */ | |
1401 | Local[3] = DST_S_C_SRC_DECLFILE; | |
1402 | Local[4] = 1 + 2 + 8 + 4 + 2 + 1 + 1 + i + 1; | |
1403 | cp = Local + 5; | |
1404 | /* | |
1405 | * Flags | |
1406 | */ | |
1407 | *cp++ = 0; | |
1408 | /* | |
1409 | * File ID | |
1410 | */ | |
494a6c05 | 1411 | COPY_SHORT (cp, ID_Number); |
703139a8 | 1412 | cp += 2; |
b9419dd2 | 1413 | #ifndef VMS |
be9618de KR |
1414 | /* |
1415 | * Creation Date. Unknown, so we fill with zeroes. | |
1416 | */ | |
703139a8 KR |
1417 | COPY_LONG (cp, 0); |
1418 | cp += 4; | |
1419 | COPY_LONG (cp, 0); | |
1420 | cp += 4; | |
be9618de KR |
1421 | /* |
1422 | * End of file block | |
1423 | */ | |
703139a8 KR |
1424 | COPY_LONG (cp, 0); |
1425 | cp += 4; | |
be9618de KR |
1426 | /* |
1427 | * First free byte | |
1428 | */ | |
703139a8 KR |
1429 | COPY_SHORT (cp, 0); |
1430 | cp += 2; | |
be9618de KR |
1431 | /* |
1432 | * Record format | |
1433 | */ | |
1434 | *cp++ = 0; | |
1435 | /* | |
1436 | * Filename | |
1437 | */ | |
1438 | *cp++ = i; | |
1439 | cp1 = Filename; | |
1440 | #else /* Use this code when assembling for VMS on a VMS system */ | |
1441 | /* | |
1442 | * Creation Date | |
1443 | */ | |
703139a8 KR |
1444 | memcpy (cp, (char *) &Date_Xab.xab$q_cdt, 8); |
1445 | cp += 8; | |
be9618de KR |
1446 | /* |
1447 | * End of file block | |
1448 | */ | |
703139a8 KR |
1449 | COPY_LONG (cp, File_Header_Xab.xab$l_ebk); |
1450 | cp += 4; | |
be9618de KR |
1451 | /* |
1452 | * First free byte | |
1453 | */ | |
703139a8 KR |
1454 | COPY_SHORT (cp, File_Header_Xab.xab$w_ffb); |
1455 | cp += 2; | |
be9618de KR |
1456 | /* |
1457 | * Record format | |
1458 | */ | |
1459 | *cp++ = File_Header_Xab.xab$b_rfo; | |
1460 | /* | |
1461 | * Filename | |
1462 | */ | |
1463 | *cp++ = i; | |
1464 | cp1 = Rs_String; | |
b9419dd2 | 1465 | #endif /* VMS */ |
be9618de KR |
1466 | while (--i >= 0) |
1467 | *cp++ = *cp1++; | |
1468 | /* | |
1469 | * Library module name (none) | |
1470 | */ | |
1471 | *cp++ = 0; | |
1472 | /* | |
1473 | * Done | |
1474 | */ | |
1475 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1476 | return 1; | |
1477 | } | |
1478 | \f | |
1479 | ||
1480 | /* | |
1481 | * Give the number of source lines to the debugger | |
1482 | */ | |
8e86815b | 1483 | static void |
be9618de KR |
1484 | VMS_TBT_Source_Lines (ID_Number, Starting_Line_Number, Number_Of_Lines) |
1485 | int ID_Number; | |
1486 | int Starting_Line_Number; | |
1487 | int Number_Of_Lines; | |
1488 | { | |
8e86815b | 1489 | char *cp; |
be9618de KR |
1490 | char Local[16]; |
1491 | ||
1492 | /* | |
1493 | * Size of record | |
1494 | */ | |
1495 | Local[0] = 1 + 1 + 2 + 1 + 4 + 1 + 2; | |
1496 | /* | |
1497 | * Source declaration | |
1498 | */ | |
1499 | Local[1] = DST_S_C_SOURCE; | |
1500 | /* | |
1501 | * Set Source File | |
1502 | */ | |
1503 | cp = Local + 2; | |
1504 | *cp++ = DST_S_C_SRC_SETFILE; | |
1505 | /* | |
1506 | * File ID Number | |
1507 | */ | |
494a6c05 | 1508 | COPY_SHORT (cp, ID_Number); |
703139a8 | 1509 | cp += 2; |
be9618de KR |
1510 | /* |
1511 | * Set record number | |
1512 | */ | |
1513 | *cp++ = DST_S_C_SRC_SETREC_L; | |
494a6c05 | 1514 | COPY_LONG (cp, Starting_Line_Number); |
703139a8 | 1515 | cp += 4; |
be9618de KR |
1516 | /* |
1517 | * Define lines | |
1518 | */ | |
1519 | *cp++ = DST_S_C_SRC_DEFLINES_W; | |
494a6c05 | 1520 | COPY_SHORT (cp, Number_Of_Lines); |
703139a8 | 1521 | cp += 2; |
be9618de KR |
1522 | /* |
1523 | * Done | |
1524 | */ | |
1525 | VMS_Store_Immediate_Data (Local, cp - Local, OBJ_S_C_TBT); | |
1526 | } | |
1527 | \f | |
1528 | ||
1529 | ||
3c650d09 KR |
1530 | /* |
1531 | * This routine locates a file in the list of files. If an entry does not | |
be9618de | 1532 | * exist, one is created. For include files, a new entry is always created |
3c650d09 KR |
1533 | * such that inline functions can be properly debugged. |
1534 | */ | |
be9618de KR |
1535 | static struct input_file * |
1536 | find_file (sp) | |
1537 | symbolS *sp; | |
1538 | { | |
3c650d09 KR |
1539 | struct input_file *same_file = 0; |
1540 | struct input_file *fpnt, *last = 0; | |
1541 | char *sp_name; | |
1542 | ||
be9618de KR |
1543 | for (fpnt = file_root; fpnt; fpnt = fpnt->next) |
1544 | { | |
be9618de KR |
1545 | if (fpnt->spnt == sp) |
1546 | return fpnt; | |
3c650d09 | 1547 | last = fpnt; |
c06e55d9 | 1548 | } |
3c650d09 | 1549 | sp_name = S_GET_NAME (sp); |
be9618de KR |
1550 | for (fpnt = file_root; fpnt; fpnt = fpnt->next) |
1551 | { | |
3c650d09 | 1552 | if (strcmp (sp_name, fpnt->name) == 0) |
be9618de KR |
1553 | { |
1554 | if (fpnt->flag == 1) | |
1555 | return fpnt; | |
1556 | same_file = fpnt; | |
1557 | break; | |
c06e55d9 KR |
1558 | } |
1559 | } | |
1560 | fpnt = (struct input_file *) xmalloc (sizeof (struct input_file)); | |
3c650d09 | 1561 | if (!file_root) |
be9618de KR |
1562 | file_root = fpnt; |
1563 | else | |
3c650d09 KR |
1564 | last->next = fpnt; |
1565 | fpnt->next = 0; | |
1566 | fpnt->name = sp_name; | |
be9618de KR |
1567 | fpnt->min_line = 0x7fffffff; |
1568 | fpnt->max_line = 0; | |
1569 | fpnt->offset = 0; | |
1570 | fpnt->flag = 0; | |
1571 | fpnt->file_number = 0; | |
1572 | fpnt->spnt = sp; | |
1573 | fpnt->same_file_fpnt = same_file; | |
1574 | return fpnt; | |
1575 | } | |
1576 | \f | |
1577 | /* | |
1578 | * The following functions and definitions are used to generate object records | |
1579 | * that will describe program variables to the VMS debugger. | |
1580 | * | |
1581 | * This file contains many of the routines needed to output debugging info into | |
1582 | * the object file that the VMS debugger needs to understand symbols. These | |
1583 | * routines are called very late in the assembly process, and thus we can be | |
1584 | * fairly lax about changing things, since the GSD and the TIR sections have | |
1585 | * already been output. | |
1586 | */ | |
1587 | ||
1588 | ||
1589 | /* This routine converts a number string into an integer, and stops when it | |
a9918088 | 1590 | * sees an invalid character. The return value is the address of the character |
be9618de KR |
1591 | * just past the last character read. No error is generated. |
1592 | */ | |
1593 | static char * | |
1594 | cvt_integer (str, rtn) | |
1595 | char *str; | |
1596 | int *rtn; | |
1597 | { | |
1598 | int ival, neg; | |
1599 | neg = *str == '-' ? ++str, -1 : 1; | |
a9918088 | 1600 | ival = 0; |
be9618de KR |
1601 | while ((*str <= '9') && (*str >= '0')) |
1602 | ival = 10 * ival + *str++ - '0'; | |
1603 | *rtn = neg * ival; | |
1604 | return str; | |
1605 | } | |
1606 | ||
1607 | /* this routine fixes the names that are generated by C++, ".this" is a good | |
1608 | * example. The period does not work for the debugger, since it looks like | |
1609 | * the syntax for a structure element, and thus it gets mightily confused | |
1610 | * | |
1611 | * We also use this to strip the PsectAttribute hack from the name before we | |
1612 | * write a debugger record */ | |
1613 | ||
1614 | static char * | |
1615 | fix_name (pnt) | |
1616 | char *pnt; | |
1617 | { | |
1618 | char *pnt1; | |
1619 | /* | |
1620 | * Kill any leading "_" | |
1621 | */ | |
1622 | if (*pnt == '_') | |
1623 | pnt++; | |
1624 | /* | |
1625 | * Is there a Psect Attribute to skip?? | |
1626 | */ | |
1627 | if (HAS_PSECT_ATTRIBUTES (pnt)) | |
1628 | { | |
1629 | /* | |
1630 | * Yes: Skip it | |
1631 | */ | |
1632 | pnt += PSECT_ATTRIBUTES_STRING_LENGTH; | |
1633 | while (*pnt) | |
1634 | { | |
1635 | if ((pnt[0] == '$') && (pnt[1] == '$')) | |
1636 | { | |
1637 | pnt += 2; | |
1638 | break; | |
1639 | } | |
1640 | pnt++; | |
1641 | } | |
1642 | } | |
1643 | /* Here we fix the .this -> $this conversion */ | |
1644 | for (pnt1 = pnt; *pnt1 != 0; pnt1++) | |
1645 | { | |
1646 | if (*pnt1 == '.') | |
1647 | *pnt1 = '$'; | |
c06e55d9 | 1648 | } |
be9618de KR |
1649 | return pnt; |
1650 | } | |
1651 | ||
1652 | /* When defining a structure, this routine is called to find the name of | |
1653 | * the actual structure. It is assumed that str points to the equal sign | |
1654 | * in the definition, and it moves backward until it finds the start of the | |
1655 | * name. If it finds a 0, then it knows that this structure def is in the | |
1656 | * outermost level, and thus symbol_name points to the symbol name. | |
1657 | */ | |
1658 | static char * | |
1659 | get_struct_name (str) | |
1660 | char *str; | |
1661 | { | |
1662 | char *pnt; | |
1663 | pnt = str; | |
1664 | while ((*pnt != ':') && (*pnt != '\0')) | |
1665 | pnt--; | |
1666 | if (*pnt == '\0') | |
f2224fe2 | 1667 | return (char *) symbol_name; |
be9618de KR |
1668 | *pnt-- = '\0'; |
1669 | while ((*pnt != ';') && (*pnt != '=')) | |
1670 | pnt--; | |
1671 | if (*pnt == ';') | |
1672 | return pnt + 1; | |
1673 | while ((*pnt < '0') || (*pnt > '9')) | |
1674 | pnt++; | |
1675 | while ((*pnt >= '0') && (*pnt <= '9')) | |
1676 | pnt++; | |
1677 | return pnt; | |
1678 | } | |
1679 | ||
1680 | /* search symbol list for type number dbx_type. Return a pointer to struct */ | |
1681 | static struct VMS_DBG_Symbol * | |
1682 | find_symbol (dbx_type) | |
1683 | int dbx_type; | |
1684 | { | |
1685 | struct VMS_DBG_Symbol *spnt; | |
0509f064 | 1686 | |
b003a2d9 | 1687 | spnt = VMS_Symbol_type_list[SYMTYP_HASH(dbx_type)]; |
be9618de KR |
1688 | while (spnt != (struct VMS_DBG_Symbol *) NULL) |
1689 | { | |
1690 | if (spnt->dbx_type == dbx_type) | |
1691 | break; | |
1692 | spnt = spnt->next; | |
c06e55d9 | 1693 | } |
0509f064 KR |
1694 | if (!spnt || spnt->advanced != ALIAS) |
1695 | return spnt; | |
1696 | return find_symbol(spnt->type2); | |
be9618de KR |
1697 | } |
1698 | ||
1699 | ||
0509f064 | 1700 | #if 0 /* obsolete */ |
be9618de KR |
1701 | /* this routine puts info into either Local or Asuffix, depending on the sign |
1702 | * of size. The reason is that it is easier to build the variable descriptor | |
1703 | * backwards, while the array descriptor is best built forwards. In the end | |
1704 | * they get put together, if there is not a struct/union/enum along the way | |
1705 | */ | |
8e86815b KR |
1706 | static void |
1707 | push (value, size1) | |
1708 | int value, size1; | |
be9618de | 1709 | { |
8e86815b | 1710 | if (size1 < 0) |
be9618de | 1711 | { |
8e86815b | 1712 | size1 = -size1; |
494a6c05 KR |
1713 | if (Lpnt < size1) |
1714 | { | |
1715 | overflow = 1; | |
1716 | Lpnt = 1; | |
1717 | return; | |
c06e55d9 | 1718 | } |
494a6c05 KR |
1719 | Lpnt -= size1; |
1720 | md_number_to_chars (&Local[Lpnt + 1], value, size1); | |
1721 | } | |
be9618de | 1722 | else |
494a6c05 KR |
1723 | { |
1724 | if (Apoint + size1 >= MAX_DEBUG_RECORD) | |
1725 | { | |
1726 | overflow = 1; | |
1727 | Apoint = MAX_DEBUG_RECORD - 1; | |
1728 | return; | |
c06e55d9 | 1729 | } |
494a6c05 KR |
1730 | md_number_to_chars (&Asuffix[Apoint], value, size1); |
1731 | Apoint += size1; | |
c06e55d9 | 1732 | } |
be9618de | 1733 | } |
0509f064 KR |
1734 | #endif |
1735 | ||
1736 | ||
1737 | static void | |
1738 | fpush (value, size) | |
1739 | int value, size; | |
1740 | { | |
1741 | if (Apoint + size >= MAX_DEBUG_RECORD) | |
1742 | { | |
1743 | overflow = 1; | |
1744 | Apoint = MAX_DEBUG_RECORD - 1; | |
1745 | return; | |
1746 | } | |
1747 | if (size == 1) | |
1748 | Asuffix[Apoint++] = (char) value; | |
1749 | else | |
1750 | { | |
1751 | md_number_to_chars (&Asuffix[Apoint], value, size); | |
1752 | Apoint += size; | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | static void | |
1757 | rpush (value, size) | |
1758 | int value, size; | |
1759 | { | |
1760 | if (Lpnt < size) | |
1761 | { | |
1762 | overflow = 1; | |
1763 | Lpnt = 1; | |
1764 | return; | |
1765 | } | |
1766 | if (size == 1) | |
1767 | Local[Lpnt--] = (char) value; | |
1768 | else | |
1769 | { | |
1770 | Lpnt -= size; | |
1771 | md_number_to_chars (&Local[Lpnt + 1], value, size); | |
1772 | } | |
1773 | } | |
be9618de KR |
1774 | |
1775 | /* this routine generates the array descriptor for a given array */ | |
8e86815b | 1776 | static void |
be9618de KR |
1777 | array_suffix (spnt2) |
1778 | struct VMS_DBG_Symbol *spnt2; | |
1779 | { | |
1780 | struct VMS_DBG_Symbol *spnt; | |
1781 | struct VMS_DBG_Symbol *spnt1; | |
1782 | int rank; | |
1783 | int total_size; | |
8e86815b | 1784 | |
be9618de KR |
1785 | rank = 0; |
1786 | spnt = spnt2; | |
1787 | while (spnt->advanced != ARRAY) | |
1788 | { | |
1789 | spnt = find_symbol (spnt->type2); | |
1790 | if (spnt == (struct VMS_DBG_Symbol *) NULL) | |
1791 | return; | |
c06e55d9 | 1792 | } |
be9618de | 1793 | spnt1 = spnt; |
be9618de KR |
1794 | total_size = 1; |
1795 | while (spnt1->advanced == ARRAY) | |
1796 | { | |
1797 | rank++; | |
1798 | total_size *= (spnt1->index_max - spnt1->index_min + 1); | |
1799 | spnt1 = find_symbol (spnt1->type2); | |
c06e55d9 | 1800 | } |
be9618de | 1801 | total_size = total_size * spnt1->data_size; |
0509f064 | 1802 | fpush (spnt1->data_size, 2); /* element size */ |
c06e55d9 | 1803 | if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) |
0509f064 | 1804 | fpush (0, 1); |
be9618de | 1805 | else |
0509f064 KR |
1806 | fpush (spnt1->VMS_type, 1); /* element type */ |
1807 | fpush (DSC_K_CLASS_A, 1); /* descriptor class */ | |
1808 | fpush (0, 4); /* base address */ | |
1809 | fpush (0, 1); /* scale factor -- not applicable */ | |
1810 | fpush (0, 1); /* digit count -- not applicable */ | |
1811 | fpush (0xc0, 1); /* flags: multiplier block & bounds present */ | |
1812 | fpush (rank, 1); /* number of dimensions */ | |
1813 | fpush (total_size, 4); | |
1814 | fpush (0, 4); /* pointer to element [0][0]...[0] */ | |
be9618de KR |
1815 | spnt1 = spnt; |
1816 | while (spnt1->advanced == ARRAY) | |
1817 | { | |
0509f064 | 1818 | fpush (spnt1->index_max - spnt1->index_min + 1, 4); |
be9618de | 1819 | spnt1 = find_symbol (spnt1->type2); |
c06e55d9 | 1820 | } |
be9618de KR |
1821 | spnt1 = spnt; |
1822 | while (spnt1->advanced == ARRAY) | |
1823 | { | |
0509f064 KR |
1824 | fpush (spnt1->index_min, 4); |
1825 | fpush (spnt1->index_max, 4); | |
be9618de | 1826 | spnt1 = find_symbol (spnt1->type2); |
c06e55d9 | 1827 | } |
be9618de KR |
1828 | } |
1829 | ||
1830 | /* this routine generates the start of a variable descriptor based upon | |
1831 | * a struct/union/enum that has yet to be defined. We define this spot as | |
1832 | * a new location, and save four bytes for the address. When the struct is | |
a9918088 | 1833 | * finally defined, then we can go back and plug in the correct address. |
be9618de | 1834 | */ |
8e86815b | 1835 | static void |
be9618de KR |
1836 | new_forward_ref (dbx_type) |
1837 | int dbx_type; | |
1838 | { | |
1839 | struct forward_ref *fpnt; | |
c06e55d9 | 1840 | fpnt = (struct forward_ref *) xmalloc (sizeof (struct forward_ref)); |
be9618de KR |
1841 | fpnt->next = f_ref_root; |
1842 | f_ref_root = fpnt; | |
1843 | fpnt->dbx_type = dbx_type; | |
1844 | fpnt->struc_numb = ++structure_count; | |
1845 | fpnt->resolved = 'N'; | |
0509f064 | 1846 | rpush (DST_K_TS_IND, 1); /* indirect type specification */ |
be9618de | 1847 | total_len = 5; |
0509f064 | 1848 | rpush (total_len, 2); |
be9618de KR |
1849 | struct_number = -fpnt->struc_numb; |
1850 | } | |
1851 | ||
1852 | /* this routine generates the variable descriptor used to describe non-basic | |
1853 | * variables. It calls itself recursively until it gets to the bottom of it | |
1854 | * all, and then builds the descriptor backwards. It is easiest to do it this | |
1855 | *way since we must periodically write length bytes, and it is easiest if we know | |
1856 | *the value when it is time to write it. | |
1857 | */ | |
1858 | static int | |
1859 | gen1 (spnt, array_suffix_len) | |
1860 | struct VMS_DBG_Symbol *spnt; | |
1861 | int array_suffix_len; | |
1862 | { | |
1863 | struct VMS_DBG_Symbol *spnt1; | |
1864 | int i; | |
8e86815b | 1865 | |
be9618de KR |
1866 | switch (spnt->advanced) |
1867 | { | |
1868 | case VOID: | |
0509f064 | 1869 | rpush (DBG_S_C_VOID, 1); |
be9618de | 1870 | total_len += 1; |
0509f064 | 1871 | rpush (total_len, 2); |
be9618de KR |
1872 | return 0; |
1873 | case BASIC: | |
1874 | case FUNCTION: | |
1875 | if (array_suffix_len == 0) | |
1876 | { | |
0509f064 KR |
1877 | rpush (spnt->VMS_type, 1); |
1878 | rpush (DBG_S_C_BASIC, 1); | |
be9618de | 1879 | total_len = 2; |
0509f064 | 1880 | rpush (total_len, 2); |
be9618de | 1881 | return 1; |
c06e55d9 | 1882 | } |
0509f064 KR |
1883 | rpush (0, 4); |
1884 | rpush (DST_K_VFLAGS_DSC, 1); | |
1885 | rpush (DST_K_TS_DSC, 1); /* descriptor type specification */ | |
be9618de KR |
1886 | total_len = -2; |
1887 | return 1; | |
1888 | case STRUCT: | |
1889 | case UNION: | |
1890 | case ENUM: | |
1891 | struct_number = spnt->struc_numb; | |
1892 | if (struct_number < 0) | |
1893 | { | |
1894 | new_forward_ref (spnt->dbx_type); | |
1895 | return 1; | |
1896 | } | |
0509f064 | 1897 | rpush (DBG_S_C_STRUCT, 1); |
be9618de | 1898 | total_len = 5; |
0509f064 | 1899 | rpush (total_len, 2); |
be9618de KR |
1900 | return 1; |
1901 | case POINTER: | |
1902 | spnt1 = find_symbol (spnt->type2); | |
1903 | i = 1; | |
a9918088 | 1904 | if (!spnt1) |
be9618de KR |
1905 | new_forward_ref (spnt->type2); |
1906 | else | |
1907 | i = gen1 (spnt1, 0); | |
1908 | if (i) | |
3c650d09 | 1909 | { /* (*void) is a special case, do not put pointer suffix */ |
0509f064 | 1910 | rpush (DBG_S_C_POINTER, 1); |
be9618de | 1911 | total_len += 3; |
0509f064 | 1912 | rpush (total_len, 2); |
c06e55d9 | 1913 | } |
be9618de KR |
1914 | return 1; |
1915 | case ARRAY: | |
1916 | spnt1 = spnt; | |
1917 | while (spnt1->advanced == ARRAY) | |
1918 | { | |
1919 | spnt1 = find_symbol (spnt1->type2); | |
a9918088 | 1920 | if (!spnt1) |
be9618de | 1921 | { |
703139a8 KR |
1922 | as_tsktsk ("debugger forward reference error, dbx type %d", |
1923 | spnt->type2); | |
8e86815b | 1924 | return 0; |
be9618de | 1925 | } |
c06e55d9 | 1926 | } |
be9618de KR |
1927 | /* It is too late to generate forward references, so the user gets a message. |
1928 | * This should only happen on a compiler error */ | |
8e86815b | 1929 | (void) gen1 (spnt1, 1); |
be9618de KR |
1930 | i = Apoint; |
1931 | array_suffix (spnt); | |
1932 | array_suffix_len = Apoint - i; | |
1933 | switch (spnt1->advanced) | |
1934 | { | |
1935 | case BASIC: | |
1936 | case FUNCTION: | |
1937 | break; | |
1938 | default: | |
0509f064 | 1939 | rpush (0, 2); |
be9618de | 1940 | total_len += 2; |
0509f064 KR |
1941 | rpush (total_len, 2); |
1942 | rpush (DST_K_VFLAGS_DSC, 1); | |
1943 | rpush (1, 1); /* flags: element value spec included */ | |
1944 | rpush (1, 1); /* one dimension */ | |
1945 | rpush (DBG_S_C_COMPLEX_ARRAY, 1); | |
c06e55d9 | 1946 | } |
be9618de | 1947 | total_len += array_suffix_len + 8; |
0509f064 | 1948 | rpush (total_len, 2); |
8e86815b KR |
1949 | break; |
1950 | default: /* lint suppression */ | |
1951 | break; | |
c06e55d9 | 1952 | } |
8e86815b | 1953 | return 0; |
be9618de KR |
1954 | } |
1955 | ||
1956 | /* This generates a suffix for a variable. If it is not a defined type yet, | |
1957 | * then dbx_type contains the type we are expecting so we can generate a | |
1958 | * forward reference. This calls gen1 to build most of the descriptor, and | |
1959 | * then it puts the icing on at the end. It then dumps whatever is needed | |
1960 | * to get a complete descriptor (i.e. struct reference, array suffix ). | |
1961 | */ | |
8e86815b | 1962 | static void |
be9618de KR |
1963 | generate_suffix (spnt, dbx_type) |
1964 | struct VMS_DBG_Symbol *spnt; | |
1965 | int dbx_type; | |
1966 | { | |
4b18b7cd | 1967 | static const char pvoid[6] = { |
a9918088 KR |
1968 | 5, /* record.length == 5 */ |
1969 | DST_K_TYPSPEC, /* record.type == 1 (type specification) */ | |
1970 | 0, /* name.length == 0, no name follows */ | |
1971 | 1, 0, /* type.length == 1 {2 bytes, little endian} */ | |
1972 | DBG_S_C_VOID /* type.type == 5 (pointer to unspecified) */ | |
1973 | }; | |
be9618de | 1974 | int i; |
8e86815b | 1975 | |
be9618de KR |
1976 | Apoint = 0; |
1977 | Lpnt = MAX_DEBUG_RECORD - 1; | |
1978 | total_len = 0; | |
1979 | struct_number = 0; | |
1980 | overflow = 0; | |
a9918088 | 1981 | if (!spnt) |
be9618de KR |
1982 | new_forward_ref (dbx_type); |
1983 | else | |
1984 | { | |
c06e55d9 | 1985 | if (spnt->VMS_type != DBG_S_C_ADVANCED_TYPE) |
8e86815b | 1986 | return; /* no suffix needed */ |
be9618de | 1987 | gen1 (spnt, 0); |
c06e55d9 | 1988 | } |
0509f064 KR |
1989 | rpush (0, 1); /* no name (len==0) */ |
1990 | rpush (DST_K_TYPSPEC, 1); | |
be9618de | 1991 | total_len += 4; |
0509f064 | 1992 | rpush (total_len, 1); |
be9618de KR |
1993 | /* if the variable descriptor overflows the record, output a descriptor for |
1994 | * a pointer to void. | |
1995 | */ | |
1996 | if ((total_len >= MAX_DEBUG_RECORD) || overflow) | |
1997 | { | |
3c650d09 KR |
1998 | as_warn ("Variable descriptor %d too complicated. Defined as `void *'.", |
1999 | spnt->dbx_type); | |
be9618de KR |
2000 | VMS_Store_Immediate_Data (pvoid, 6, OBJ_S_C_DBG); |
2001 | return; | |
c06e55d9 | 2002 | } |
be9618de KR |
2003 | i = 0; |
2004 | while (Lpnt < MAX_DEBUG_RECORD - 1) | |
2005 | Local[i++] = Local[++Lpnt]; | |
2006 | Lpnt = i; | |
2007 | /* we use this for a reference to a structure that has already been defined */ | |
2008 | if (struct_number > 0) | |
2009 | { | |
2010 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
2011 | Lpnt = 0; | |
2012 | VMS_Store_Struct (struct_number); | |
c06e55d9 | 2013 | } |
3c650d09 KR |
2014 | /* We use this for a forward reference to a structure that has yet to be |
2015 | * defined. We store four bytes of zero to make room for the actual address | |
2016 | * once it is known. | |
2017 | */ | |
be9618de KR |
2018 | if (struct_number < 0) |
2019 | { | |
2020 | struct_number = -struct_number; | |
2021 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
2022 | Lpnt = 0; | |
2023 | VMS_Def_Struct (struct_number); | |
a9918088 KR |
2024 | COPY_LONG(&Local[Lpnt], 0L); |
2025 | Lpnt += 4; | |
be9618de KR |
2026 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); |
2027 | Lpnt = 0; | |
c06e55d9 | 2028 | } |
be9618de KR |
2029 | i = 0; |
2030 | while (i < Apoint) | |
2031 | Local[Lpnt++] = Asuffix[i++]; | |
2032 | if (Lpnt != 0) | |
2033 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
2034 | Lpnt = 0; | |
2035 | } | |
2036 | ||
a9918088 KR |
2037 | /* "novel length" type doesn't work for simple atomic types */ |
2038 | #define USE_BITSTRING_DESCRIPTOR(t) ((t)->advanced == BASIC) | |
2039 | #undef SETUP_BASIC_TYPES | |
2040 | ||
2041 | static void | |
2042 | bitfield_suffix (spnt, width) | |
2043 | struct VMS_DBG_Symbol *spnt; | |
2044 | int width; | |
2045 | { | |
2046 | Local[Lpnt++] = 13; /* rec.len==13 */ | |
2047 | Local[Lpnt++] = DST_K_TYPSPEC; /* a type specification record */ | |
2048 | Local[Lpnt++] = 0; /* not named */ | |
2049 | COPY_SHORT(&Local[Lpnt], 9); /* typ.len==9 */ | |
2050 | Lpnt += 2; | |
2051 | Local[Lpnt++] = DST_K_TS_NOV_LENG; /* This type is a "novel length" | |
2052 | incarnation of some other type. */ | |
2053 | COPY_LONG(&Local[Lpnt], width); /* size in bits == novel length */ | |
2054 | Lpnt += 4; | |
2055 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
2056 | Lpnt = 0; | |
2057 | /* assert( spnt->struc_numb > 0 ); */ | |
2058 | VMS_Store_Struct (spnt->struc_numb); /* output 4 more bytes */ | |
2059 | } | |
2060 | ||
2061 | /* Formally define a builtin type, so that it can serve as the target of | |
2062 | an indirect reference. It makes bitfield_suffix() easier by avoiding | |
2063 | the need to use a forward reference for the first occurrence of each | |
2064 | type used in a bitfield. */ | |
2065 | static void | |
2066 | setup_basic_type (spnt) | |
2067 | struct VMS_DBG_Symbol *spnt; | |
2068 | { | |
2069 | #ifdef SETUP_BASIC_TYPES | |
2070 | /* This would be very useful if "novel length" fields actually worked | |
2071 | with basic types like they do with enumerated types. However, | |
2072 | they do not, so this isn't worth doing just so that you can use | |
2073 | EXAMINE/TYPE=(__long_long_int) instead of EXAMINE/QUAD. */ | |
2074 | char *p; | |
2075 | #ifndef SETUP_SYNONYM_TYPES | |
2076 | /* This determines whether compatible things like `int' and `long int' | |
2077 | ought to have distinct type records rather than sharing one. */ | |
2078 | struct VMS_DBG_Symbol *spnt2; | |
2079 | ||
2080 | /* first check whether this type has already been seen by another name */ | |
b003a2d9 KR |
2081 | for (spnt2 = VMS_Symbol_type_list[SYMTYP_HASH(spnt->VMS_type)]; |
2082 | spnt2; | |
2083 | spnt2 = spnt2->next) | |
a9918088 KR |
2084 | if (spnt2 != spnt && spnt2->VMS_type == spnt->VMS_type) |
2085 | { | |
2086 | spnt->struc_numb = spnt2->struc_numb; | |
2087 | return; | |
2088 | } | |
2089 | #endif | |
2090 | ||
2091 | /* `structure number' doesn't really mean `structure'; it means an index | |
2092 | into a linker maintained set of saved locations which can be referenced | |
2093 | again later. */ | |
2094 | spnt->struc_numb = ++structure_count; | |
2095 | VMS_Def_Struct (spnt->struc_numb); /* remember where this type lives */ | |
2096 | /* define the simple scalar type */ | |
2097 | Local[Lpnt++] = 6 + strlen (symbol_name) + 2; /* rec.len */ | |
2098 | Local[Lpnt++] = DST_K_TYPSPEC; /* rec.typ==type specification */ | |
2099 | Local[Lpnt++] = strlen (symbol_name) + 2; | |
2100 | Local[Lpnt++] = '_'; /* prefix name with "__" */ | |
2101 | Local[Lpnt++] = '_'; | |
2102 | for (p = symbol_name; *p; p++) | |
2103 | Local[Lpnt++] = *p == ' ' ? '_' : *p; | |
2104 | COPY_SHORT(&Local[Lpnt], 2); /* typ.len==2 */ | |
2105 | Lpnt += 2; | |
2106 | Local[Lpnt++] = DST_K_TS_ATOM; /* typ.kind is simple type */ | |
2107 | Local[Lpnt++] = spnt->VMS_type; /* typ.type */ | |
2108 | VMS_Store_Immediate_Data (Local, Lpnt, OBJ_S_C_DBG); | |
2109 | Lpnt = 0; | |
2110 | #endif /* SETUP_BASIC_TYPES */ | |
3c650d09 | 2111 | return; |
a9918088 KR |
2112 | } |
2113 | ||
2114 | /* This routine generates a symbol definition for a C symbol for the debugger. | |
2115 | * It takes a psect and offset for global symbols; if psect < 0, then this is | |
be9618de KR |
2116 | * a local variable and the offset is relative to FP. In this case it can |
2117 | * be either a variable (Offset < 0) or a parameter (Offset > 0). | |
2118 | */ | |
8e86815b | 2119 | static void |
be9618de KR |
2120 | VMS_DBG_record (spnt, Psect, Offset, Name) |
2121 | struct VMS_DBG_Symbol *spnt; | |
2122 | int Psect; | |
2123 | int Offset; | |
2124 | char *Name; | |
2125 | { | |
be9618de | 2126 | char *Name_pnt; |
a9918088 | 2127 | int len; |
be9618de | 2128 | int i = 0; |
a9918088 | 2129 | |
8e86815b KR |
2130 | /* if there are bad characters in name, convert them */ |
2131 | Name_pnt = fix_name (Name); | |
2132 | ||
a9918088 | 2133 | len = strlen(Name_pnt); |
be9618de KR |
2134 | if (Psect < 0) |
2135 | { /* this is a local variable, referenced to SP */ | |
a9918088 | 2136 | Local[i++] = 7 + len; |
be9618de | 2137 | Local[i++] = spnt->VMS_type; |
a9918088 | 2138 | Local[i++] = (Offset > 0) ? DBG_C_FUNCTION_PARAM : DBG_C_LOCAL_SYM; |
494a6c05 KR |
2139 | COPY_LONG (&Local[i], Offset); |
2140 | i += 4; | |
be9618de KR |
2141 | } |
2142 | else | |
2143 | { | |
a9918088 | 2144 | Local[i++] = 7 + len; |
be9618de | 2145 | Local[i++] = spnt->VMS_type; |
a9918088 | 2146 | Local[i++] = DST_K_VALKIND_ADDR; |
be9618de KR |
2147 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2148 | i = 0; | |
2149 | VMS_Set_Data (Psect, Offset, OBJ_S_C_DBG, 0); | |
2150 | } | |
a9918088 | 2151 | Local[i++] = len; |
be9618de KR |
2152 | while (*Name_pnt != '\0') |
2153 | Local[i++] = *Name_pnt++; | |
2154 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2155 | if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2156 | generate_suffix (spnt, 0); | |
2157 | } | |
2158 | ||
2159 | ||
2160 | /* This routine parses the stabs entries in order to make the definition | |
2161 | * for the debugger of local symbols and function parameters | |
2162 | */ | |
8e86815b | 2163 | static void |
be9618de KR |
2164 | VMS_local_stab_Parse (sp) |
2165 | symbolS *sp; | |
2166 | { | |
2167 | char *pnt; | |
2168 | char *pnt1; | |
2169 | char *str; | |
2170 | struct VMS_DBG_Symbol *spnt; | |
be9618de | 2171 | int dbx_type; |
8e86815b | 2172 | |
be9618de KR |
2173 | dbx_type = 0; |
2174 | str = S_GET_NAME (sp); | |
2175 | pnt = (char *) strchr (str, ':'); | |
2176 | if (pnt == (char *) NULL) | |
2177 | return; /* no colon present */ | |
2178 | pnt1 = pnt++; /* save this for later, and skip colon */ | |
2179 | if (*pnt == 'c') | |
8e86815b KR |
2180 | return; /* ignore static constants */ |
2181 | ||
be9618de KR |
2182 | /* there is one little catch that we must be aware of. Sometimes function |
2183 | * parameters are optimized into registers, and the compiler, in its infiite | |
2184 | * wisdom outputs stabs records for *both*. In general we want to use the | |
2185 | * register if it is present, so we must search the rest of the symbols for | |
2186 | * this function to see if this parameter is assigned to a register. | |
2187 | */ | |
2188 | { | |
2189 | char *str1; | |
2190 | char *pnt2; | |
2191 | symbolS *sp1; | |
2192 | if (*pnt == 'p') | |
2193 | { | |
2194 | for (sp1 = symbol_next (sp); sp1; sp1 = symbol_next (sp1)) | |
2195 | { | |
2196 | if (!S_IS_DEBUG (sp1)) | |
2197 | continue; | |
2198 | if (S_GET_RAW_TYPE (sp1) == N_FUN) | |
2199 | { | |
2200 | char * pnt3=(char*) strchr (S_GET_NAME (sp1), ':') + 1; | |
2201 | if (*pnt3 == 'F' || *pnt3 == 'f') break; | |
c06e55d9 | 2202 | } |
be9618de KR |
2203 | if (S_GET_RAW_TYPE (sp1) != N_RSYM) |
2204 | continue; | |
2205 | str1 = S_GET_NAME (sp1); /* and get the name */ | |
2206 | pnt2 = str; | |
2207 | while (*pnt2 != ':') | |
2208 | { | |
2209 | if (*pnt2 != *str1) | |
2210 | break; | |
2211 | pnt2++; | |
2212 | str1++; | |
c06e55d9 | 2213 | } |
be9618de KR |
2214 | if ((*str1 != ':') || (*pnt2 != ':')) |
2215 | continue; | |
2216 | return; /* they are the same! lets skip this one */ | |
c06e55d9 | 2217 | } /* for */ |
be9618de KR |
2218 | /* first find the dbx symbol type from list, and then find VMS type */ |
2219 | pnt++; /* skip p in case no register */ | |
c06e55d9 KR |
2220 | } /* if */ |
2221 | } /* p block */ | |
be9618de KR |
2222 | pnt = cvt_integer (pnt, &dbx_type); |
2223 | spnt = find_symbol (dbx_type); | |
a9918088 | 2224 | if (!spnt) |
8e86815b | 2225 | return; /*Dunno what this is*/ |
be9618de KR |
2226 | *pnt1 = '\0'; |
2227 | VMS_DBG_record (spnt, -1, S_GET_VALUE (sp), str); | |
2228 | *pnt1 = ':'; /* and restore the string */ | |
8e86815b | 2229 | return; |
be9618de KR |
2230 | } |
2231 | ||
2232 | /* This routine parses a stabs entry to find the information required to define | |
2233 | * a variable. It is used for global and static variables. | |
2234 | * Basically we need to know the address of the symbol. With older versions | |
2235 | * of the compiler, const symbols are | |
2236 | * treated differently, in that if they are global they are written into the | |
2237 | * text psect. The global symbol entry for such a const is actually written | |
2238 | * as a program entry point (Yuk!!), so if we cannot find a symbol in the list | |
2239 | * of psects, we must search the entry points as well. static consts are even | |
2240 | * harder, since they are never assigned a memory address. The compiler passes | |
2241 | * a stab to tell us the value, but I am not sure what to do with it. | |
2242 | */ | |
2243 | ||
8e86815b | 2244 | static void |
be9618de KR |
2245 | VMS_stab_parse (sp, expected_type, type1, type2, Text_Psect) |
2246 | symbolS *sp; | |
4b18b7cd | 2247 | int expected_type; /* char */ |
be9618de KR |
2248 | int type1, type2, Text_Psect; |
2249 | { | |
2250 | char *pnt; | |
2251 | char *pnt1; | |
2252 | char *str; | |
2253 | symbolS *sp1; | |
2254 | struct VMS_DBG_Symbol *spnt; | |
2255 | struct VMS_Symbol *vsp; | |
2256 | int dbx_type; | |
0509f064 | 2257 | |
be9618de KR |
2258 | dbx_type = 0; |
2259 | str = S_GET_NAME (sp); | |
2260 | pnt = (char *) strchr (str, ':'); | |
2261 | if (pnt == (char *) NULL) | |
2262 | return; /* no colon present */ | |
2263 | pnt1 = pnt; /* save this for later*/ | |
2264 | pnt++; | |
2265 | if (*pnt == expected_type) | |
2266 | { | |
2267 | pnt = cvt_integer (pnt + 1, &dbx_type); | |
2268 | spnt = find_symbol (dbx_type); | |
2269 | if (spnt == (struct VMS_DBG_Symbol *) NULL) | |
8e86815b | 2270 | return; /*Dunno what this is*/ |
be9618de KR |
2271 | /* now we need to search the symbol table to find the psect and offset for |
2272 | * this variable. | |
2273 | */ | |
2274 | *pnt1 = '\0'; | |
2275 | vsp = VMS_Symbols; | |
2276 | while (vsp != (struct VMS_Symbol *) NULL) | |
2277 | { | |
2278 | pnt = S_GET_NAME (vsp->Symbol); | |
2279 | if (pnt != (char *) NULL) | |
2280 | if (*pnt++ == '_') | |
2281 | /* make sure name is the same, and make sure correct symbol type */ | |
2282 | if ((strlen (pnt) == strlen (str)) && (strcmp (pnt, str) == 0) | |
2283 | && ((S_GET_RAW_TYPE (vsp->Symbol) == type1) || | |
2284 | (S_GET_RAW_TYPE (vsp->Symbol) == type2))) | |
2285 | break; | |
2286 | vsp = vsp->Next; | |
c06e55d9 | 2287 | } |
be9618de KR |
2288 | if (vsp != (struct VMS_Symbol *) NULL) |
2289 | { | |
2290 | VMS_DBG_record (spnt, vsp->Psect_Index, vsp->Psect_Offset, str); | |
2291 | *pnt1 = ':'; /* and restore the string */ | |
8e86815b | 2292 | return; |
c06e55d9 | 2293 | } |
be9618de KR |
2294 | /* the symbol was not in the symbol list, but it may be an "entry point" |
2295 | if it was a constant */ | |
2296 | for (sp1 = symbol_rootP; sp1; sp1 = symbol_next (sp1)) | |
2297 | { | |
2298 | /* | |
2299 | * Dispatch on STAB type | |
2300 | */ | |
2301 | if (S_IS_DEBUG (sp1) || (S_GET_TYPE (sp1) != N_TEXT)) | |
2302 | continue; | |
2303 | pnt = S_GET_NAME (sp1); | |
2304 | if (*pnt == '_') | |
2305 | pnt++; | |
2306 | if (strcmp (pnt, str) == 0) | |
2307 | { | |
2308 | if (!gave_compiler_message && expected_type == 'G') | |
2309 | { | |
3c650d09 KR |
2310 | static const char long_const_msg[] = "\ |
2311 | ***Warning - the assembly code generated by the compiler has placed \n\ | |
2312 | global constant(s) in the text psect. These will not be available to \n\ | |
2313 | other modules, since this is not the correct way to handle this. You \n\ | |
2314 | have two options: 1) get a patched compiler that does not put global \n\ | |
2315 | constants in the text psect, or 2) remove the 'const' keyword from \n\ | |
2316 | definitions of global variables in your source module(s). Don't say \n\ | |
2317 | I didn't warn you! \n"; | |
2318 | ||
2319 | as_tsktsk (long_const_msg); | |
be9618de | 2320 | gave_compiler_message = 1; |
c06e55d9 | 2321 | } |
be9618de KR |
2322 | VMS_DBG_record (spnt, |
2323 | Text_Psect, | |
2324 | S_GET_VALUE (sp1), | |
2325 | str); | |
2326 | *pnt1 = ':'; | |
2327 | *S_GET_NAME (sp1) = 'L'; | |
2328 | /* fool assembler to not output this | |
2329 | * as a routine in the TBT */ | |
8e86815b | 2330 | return; |
c06e55d9 KR |
2331 | } |
2332 | } | |
2333 | } | |
be9618de | 2334 | *pnt1 = ':'; /* and restore the string */ |
8e86815b | 2335 | return; |
be9618de KR |
2336 | } |
2337 | ||
8e86815b | 2338 | static void |
be9618de KR |
2339 | VMS_GSYM_Parse (sp, Text_Psect) |
2340 | symbolS *sp; | |
2341 | int Text_Psect; | |
2342 | { /* Global variables */ | |
2343 | VMS_stab_parse (sp, 'G', (N_UNDF | N_EXT), (N_DATA | N_EXT), Text_Psect); | |
2344 | } | |
2345 | ||
2346 | ||
8e86815b | 2347 | static void |
be9618de KR |
2348 | VMS_LCSYM_Parse (sp, Text_Psect) |
2349 | symbolS *sp; | |
2350 | int Text_Psect; | |
2351 | { /* Static symbols - uninitialized */ | |
2352 | VMS_stab_parse (sp, 'S', N_BSS, -1, Text_Psect); | |
2353 | } | |
2354 | ||
8e86815b | 2355 | static void |
be9618de KR |
2356 | VMS_STSYM_Parse (sp, Text_Psect) |
2357 | symbolS *sp; | |
2358 | int Text_Psect; | |
2359 | { /* Static symbols - initialized */ | |
2360 | VMS_stab_parse (sp, 'S', N_DATA, -1, Text_Psect); | |
2361 | } | |
2362 | ||
2363 | ||
2364 | /* for register symbols, we must figure out what range of addresses within the | |
2365 | * psect are valid. We will use the brackets in the stab directives to give us | |
2366 | * guidance as to the PC range that this variable is in scope. I am still not | |
2367 | * completely comfortable with this but as I learn more, I seem to get a better | |
2368 | * handle on what is going on. | |
2369 | * Caveat Emptor. | |
2370 | */ | |
8e86815b | 2371 | static void |
be9618de KR |
2372 | VMS_RSYM_Parse (sp, Current_Routine, Text_Psect) |
2373 | symbolS *sp, *Current_Routine; | |
2374 | int Text_Psect; | |
2375 | { | |
2376 | char *pnt; | |
2377 | char *pnt1; | |
2378 | char *str; | |
2379 | int dbx_type; | |
2380 | struct VMS_DBG_Symbol *spnt; | |
a9918088 | 2381 | int len; |
be9618de KR |
2382 | int i = 0; |
2383 | int bcnt = 0; | |
2384 | int Min_Offset = -1; /* min PC of validity */ | |
2385 | int Max_Offset = 0; /* max PC of validity */ | |
2386 | symbolS *symbolP; | |
a9918088 | 2387 | |
be9618de KR |
2388 | for (symbolP = sp; symbolP; symbolP = symbol_next (symbolP)) |
2389 | { | |
2390 | /* | |
2391 | * Dispatch on STAB type | |
2392 | */ | |
2393 | switch (S_GET_RAW_TYPE (symbolP)) | |
2394 | { | |
2395 | case N_LBRAC: | |
2396 | if (bcnt++ == 0) | |
2397 | Min_Offset = S_GET_VALUE (symbolP); | |
2398 | break; | |
2399 | case N_RBRAC: | |
2400 | if (--bcnt == 0) | |
b003a2d9 | 2401 | Max_Offset = S_GET_VALUE (symbolP) - 1; |
be9618de KR |
2402 | break; |
2403 | } | |
2404 | if ((Min_Offset != -1) && (bcnt == 0)) | |
2405 | break; | |
2406 | if (S_GET_RAW_TYPE (symbolP) == N_FUN) | |
2407 | { | |
2408 | pnt=(char*) strchr (S_GET_NAME (symbolP), ':') + 1; | |
2409 | if (*pnt == 'F' || *pnt == 'f') break; | |
c06e55d9 | 2410 | } |
be9618de | 2411 | } |
b003a2d9 KR |
2412 | |
2413 | /* Check to see that the addresses were defined. If not, then there were no | |
2414 | * brackets in the function, and we must try to search for the next function. | |
2415 | * Since functions can be in any order, we should search all of the symbol | |
2416 | * list to find the correct ending address. */ | |
be9618de KR |
2417 | if (Min_Offset == -1) |
2418 | { | |
2419 | int Max_Source_Offset; | |
2420 | int This_Offset; | |
2421 | Min_Offset = S_GET_VALUE (sp); | |
2422 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
2423 | { | |
2424 | /* | |
2425 | * Dispatch on STAB type | |
2426 | */ | |
be9618de KR |
2427 | switch (S_GET_RAW_TYPE (symbolP)) |
2428 | { | |
2429 | case N_TEXT | N_EXT: | |
b003a2d9 | 2430 | This_Offset = S_GET_VALUE (symbolP); |
be9618de KR |
2431 | if ((This_Offset > Min_Offset) && (This_Offset < Max_Offset)) |
2432 | Max_Offset = This_Offset; | |
2433 | break; | |
2434 | case N_SLINE: | |
b003a2d9 | 2435 | This_Offset = S_GET_VALUE (symbolP); |
be9618de KR |
2436 | if (This_Offset > Max_Source_Offset) |
2437 | Max_Source_Offset = This_Offset; | |
b003a2d9 | 2438 | break; |
be9618de KR |
2439 | } |
2440 | } | |
2441 | /* if this is the last routine, then we use the PC of the last source line | |
2442 | * as a marker of the max PC for which this reg is valid */ | |
2443 | if (Max_Offset == 0x7fffffff) | |
2444 | Max_Offset = Max_Source_Offset; | |
c06e55d9 | 2445 | } |
be9618de KR |
2446 | dbx_type = 0; |
2447 | str = S_GET_NAME (sp); | |
2448 | pnt = (char *) strchr (str, ':'); | |
2449 | if (pnt == (char *) NULL) | |
2450 | return; /* no colon present */ | |
2451 | pnt1 = pnt; /* save this for later*/ | |
2452 | pnt++; | |
2453 | if (*pnt != 'r') | |
8e86815b | 2454 | return; |
be9618de KR |
2455 | pnt = cvt_integer (pnt + 1, &dbx_type); |
2456 | spnt = find_symbol (dbx_type); | |
a9918088 | 2457 | if (!spnt) |
8e86815b | 2458 | return; /*Dunno what this is yet*/ |
be9618de KR |
2459 | *pnt1 = '\0'; |
2460 | pnt = fix_name (S_GET_NAME (sp)); /* if there are bad characters in name, convert them */ | |
a9918088 KR |
2461 | len = strlen(pnt); |
2462 | Local[i++] = 25 + len; | |
be9618de | 2463 | Local[i++] = spnt->VMS_type; |
a9918088 KR |
2464 | Local[i++] = DST_K_VFLAGS_TVS; /* trailing value specified */ |
2465 | COPY_LONG(&Local[i], 1 + len); /* relative offset, beyond name */ | |
2466 | i += 4; | |
2467 | Local[i++] = len; /* name length (ascic prefix) */ | |
be9618de KR |
2468 | while (*pnt != '\0') |
2469 | Local[i++] = *pnt++; | |
a9918088 KR |
2470 | Local[i++] = DST_K_VS_FOLLOWS; /* value specification follows */ |
2471 | COPY_SHORT(&Local[i], 15); /* length of rest of record */ | |
2472 | i += 2; | |
2473 | Local[i++] = DST_K_VS_ALLOC_SPLIT; /* split lifetime */ | |
2474 | Local[i++] = 1; /* one binding follows */ | |
be9618de KR |
2475 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2476 | i = 0; | |
2477 | VMS_Set_Data (Text_Psect, Min_Offset, OBJ_S_C_DBG, 1); | |
2478 | VMS_Set_Data (Text_Psect, Max_Offset, OBJ_S_C_DBG, 1); | |
a9918088 KR |
2479 | Local[i++] = DST_K_VALKIND_REG; /* nested value spec */ |
2480 | COPY_LONG(&Local[i], S_GET_VALUE (sp)); | |
2481 | i += 4; | |
be9618de KR |
2482 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2483 | *pnt1 = ':'; | |
2484 | if (spnt->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2485 | generate_suffix (spnt, 0); | |
2486 | } | |
2487 | ||
2488 | /* this function examines a structure definition, checking all of the elements | |
2489 | * to make sure that all of them are fully defined. The only thing that we | |
2490 | * kick out are arrays of undefined structs, since we do not know how big | |
2491 | * they are. All others we can handle with a normal forward reference. | |
2492 | */ | |
2493 | static int | |
2494 | forward_reference (pnt) | |
2495 | char *pnt; | |
2496 | { | |
2497 | int i; | |
2498 | struct VMS_DBG_Symbol *spnt; | |
2499 | struct VMS_DBG_Symbol *spnt1; | |
2500 | pnt = cvt_integer (pnt + 1, &i); | |
2501 | if (*pnt == ';') | |
2502 | return 0; /* no forward references */ | |
2503 | do | |
2504 | { | |
2505 | pnt = (char *) strchr (pnt, ':'); | |
2506 | pnt = cvt_integer (pnt + 1, &i); | |
2507 | spnt = find_symbol (i); | |
494a6c05 KR |
2508 | if(spnt != (struct VMS_DBG_Symbol*) NULL) { |
2509 | while((spnt->advanced == POINTER) || (spnt->advanced == ARRAY)) | |
be9618de KR |
2510 | { |
2511 | i = spnt->type2; | |
2512 | spnt1 = find_symbol (spnt->type2); | |
2513 | if ((spnt->advanced == ARRAY) && | |
2514 | (spnt1 == (struct VMS_DBG_Symbol *) NULL)) | |
2515 | return 1; | |
2516 | if (spnt1 == (struct VMS_DBG_Symbol *) NULL) | |
2517 | break; | |
2518 | spnt = spnt1; | |
c06e55d9 KR |
2519 | } |
2520 | } | |
be9618de KR |
2521 | pnt = cvt_integer (pnt + 1, &i); |
2522 | pnt = cvt_integer (pnt + 1, &i); | |
2523 | } while (*++pnt != ';'); | |
2524 | return 0; /* no forward refences found */ | |
2525 | } | |
2526 | ||
494a6c05 KR |
2527 | /* Used to check a single element of a structure on the final pass*/ |
2528 | ||
2529 | static int | |
2530 | final_forward_reference (spnt) | |
4b18b7cd | 2531 | struct VMS_DBG_Symbol *spnt; |
494a6c05 | 2532 | { |
a9918088 KR |
2533 | struct VMS_DBG_Symbol *spnt1; |
2534 | ||
2535 | while (spnt && (spnt->advanced == POINTER || spnt->advanced == ARRAY)) | |
2536 | { | |
2537 | spnt1 = find_symbol(spnt->type2); | |
2538 | if (spnt->advanced == ARRAY && !spnt1) return 1; | |
2539 | spnt = spnt1; | |
2540 | } | |
2541 | return 0; /* no forward refences found */ | |
494a6c05 KR |
2542 | } |
2543 | ||
be9618de KR |
2544 | /* This routine parses the stabs directives to find any definitions of dbx type |
2545 | * numbers. It makes a note of all of them, creating a structure element | |
2546 | * of VMS_DBG_Symbol that describes it. This also generates the info for the | |
2547 | * debugger that describes the struct/union/enum, so that further references | |
2548 | * to these data types will be by number | |
2549 | * We have to process pointers right away, since there can be references | |
2550 | * to them later in the same stabs directive. We cannot have forward | |
2551 | * references to pointers, (but we can have a forward reference to a pointer to | |
2552 | * a structure/enum/union) and this is why we process them immediately. | |
2553 | * After we process the pointer, then we search for defs that are nested even | |
2554 | * deeper. | |
494a6c05 KR |
2555 | * 8/15/92: We have to process arrays right away too, because there can |
2556 | * be multiple references to identical array types in one structure | |
2557 | * definition, and only the first one has the definition. (We tend to | |
2558 | * parse from the back going forward. | |
be9618de KR |
2559 | */ |
2560 | static int | |
2561 | VMS_typedef_parse (str) | |
2562 | char *str; | |
2563 | { | |
2564 | char *pnt; | |
2565 | char *pnt1; | |
f2224fe2 | 2566 | const char *pnt2; |
be9618de KR |
2567 | int i; |
2568 | int dtype; | |
2569 | struct forward_ref *fpnt; | |
a9918088 | 2570 | int i1, i2, i3, len; |
be9618de KR |
2571 | struct VMS_DBG_Symbol *spnt; |
2572 | struct VMS_DBG_Symbol *spnt1; | |
a9918088 | 2573 | |
be9618de KR |
2574 | /* check for any nested def's */ |
2575 | pnt = (char *) strchr (str + 1, '='); | |
494a6c05 KR |
2576 | if ((pnt != (char *) NULL) && (*(str + 1) != '*') |
2577 | && (str[1] != 'a' || str[2] != 'r')) | |
be9618de KR |
2578 | if (VMS_typedef_parse (pnt) == 1) |
2579 | return 1; | |
2580 | /* now find dbx_type of entry */ | |
2581 | pnt = str - 1; | |
2582 | if (*pnt == 'c') | |
2583 | { /* check for static constants */ | |
2584 | *str = '\0'; /* for now we ignore them */ | |
2585 | return 0; | |
c06e55d9 | 2586 | } |
be9618de KR |
2587 | while ((*pnt <= '9') && (*pnt >= '0')) |
2588 | pnt--; | |
2589 | pnt++; /* and get back to the number */ | |
2590 | cvt_integer (pnt, &i1); | |
2591 | spnt = find_symbol (i1); | |
2592 | /* first we see if this has been defined already, due to a forward reference*/ | |
a9918088 | 2593 | if (!spnt) |
be9618de | 2594 | { |
b003a2d9 | 2595 | i2 = SYMTYP_HASH(i1); |
c06e55d9 | 2596 | spnt = (struct VMS_DBG_Symbol *) xmalloc (sizeof (struct VMS_DBG_Symbol)); |
b003a2d9 KR |
2597 | spnt->next = VMS_Symbol_type_list[i2]; |
2598 | VMS_Symbol_type_list[i2] = spnt; | |
be9618de | 2599 | spnt->dbx_type = i1; /* and save the type */ |
a9918088 KR |
2600 | spnt->type2 = spnt->VMS_type = spnt->data_size = 0; |
2601 | spnt->index_min = spnt->index_max = spnt->struc_numb = 0; | |
c06e55d9 | 2602 | } |
be9618de KR |
2603 | /* for structs and unions, do a partial parse, otherwise we sometimes get |
2604 | * circular definitions that are impossible to resolve. We read enough info | |
2605 | * so that any reference to this type has enough info to be resolved | |
2606 | */ | |
2607 | pnt = str + 1; /* point to character past equal sign */ | |
2608 | if ((*pnt == 'u') || (*pnt == 's')) | |
2609 | { | |
c06e55d9 | 2610 | } |
be9618de KR |
2611 | if ((*pnt <= '9') && (*pnt >= '0')) |
2612 | { | |
2613 | if (type_check ("void")) | |
2614 | { /* this is the void symbol */ | |
2615 | *str = '\0'; | |
2616 | spnt->advanced = VOID; | |
2617 | return 0; | |
c06e55d9 | 2618 | } |
be9618de | 2619 | if (type_check ("unknown type")) |
a9918088 | 2620 | { |
be9618de KR |
2621 | *str = '\0'; |
2622 | spnt->advanced = UNKNOWN; | |
2623 | return 0; | |
c06e55d9 | 2624 | } |
494a6c05 KR |
2625 | pnt1 = cvt_integer(pnt,&i1); |
2626 | if(i1 != spnt->dbx_type) | |
2627 | { | |
2628 | spnt->advanced = ALIAS; | |
2629 | spnt->type2 = i1; | |
2630 | strcpy(str, pnt1); | |
2631 | return 0; | |
2632 | } | |
703139a8 KR |
2633 | as_tsktsk ("debugginer output: %d is an unknown untyped variable.", |
2634 | spnt->dbx_type); | |
be9618de | 2635 | return 1; /* do not know what this is */ |
c06e55d9 | 2636 | } |
be9618de KR |
2637 | /* now define this module*/ |
2638 | pnt = str + 1; /* point to character past equal sign */ | |
2639 | switch (*pnt) | |
2640 | { | |
2641 | case 'r': | |
2642 | spnt->advanced = BASIC; | |
2643 | if (type_check ("int")) | |
2644 | { | |
2645 | spnt->VMS_type = DBG_S_C_SLINT; | |
2646 | spnt->data_size = 4; | |
2647 | } | |
2648 | else if (type_check ("long int")) | |
2649 | { | |
2650 | spnt->VMS_type = DBG_S_C_SLINT; | |
2651 | spnt->data_size = 4; | |
2652 | } | |
2653 | else if (type_check ("unsigned int")) | |
2654 | { | |
2655 | spnt->VMS_type = DBG_S_C_ULINT; | |
2656 | spnt->data_size = 4; | |
2657 | } | |
2658 | else if (type_check ("long unsigned int")) | |
2659 | { | |
2660 | spnt->VMS_type = DBG_S_C_ULINT; | |
2661 | spnt->data_size = 4; | |
2662 | } | |
2663 | else if (type_check ("short int")) | |
2664 | { | |
2665 | spnt->VMS_type = DBG_S_C_SSINT; | |
2666 | spnt->data_size = 2; | |
2667 | } | |
2668 | else if (type_check ("short unsigned int")) | |
2669 | { | |
2670 | spnt->VMS_type = DBG_S_C_USINT; | |
2671 | spnt->data_size = 2; | |
2672 | } | |
2673 | else if (type_check ("char")) | |
2674 | { | |
2675 | spnt->VMS_type = DBG_S_C_SCHAR; | |
2676 | spnt->data_size = 1; | |
2677 | } | |
2678 | else if (type_check ("signed char")) | |
2679 | { | |
2680 | spnt->VMS_type = DBG_S_C_SCHAR; | |
2681 | spnt->data_size = 1; | |
2682 | } | |
2683 | else if (type_check ("unsigned char")) | |
2684 | { | |
2685 | spnt->VMS_type = DBG_S_C_UCHAR; | |
2686 | spnt->data_size = 1; | |
2687 | } | |
2688 | else if (type_check ("float")) | |
2689 | { | |
2690 | spnt->VMS_type = DBG_S_C_REAL4; | |
2691 | spnt->data_size = 4; | |
2692 | } | |
2693 | else if (type_check ("double")) | |
2694 | { | |
a9918088 | 2695 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; |
be9618de KR |
2696 | spnt->data_size = 8; |
2697 | } | |
c06e55d9 KR |
2698 | else if (type_check ("long double")) |
2699 | { | |
2700 | /* same as double, at least for now */ | |
a9918088 | 2701 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_REAL8_G : DBG_S_C_REAL8; |
c06e55d9 KR |
2702 | spnt->data_size = 8; |
2703 | } | |
2704 | else if (type_check ("long long int")) | |
2705 | { | |
2706 | spnt->VMS_type = DBG_S_C_SQUAD; /* signed quadword */ | |
2707 | spnt->data_size = 8; | |
2708 | } | |
2709 | else if (type_check ("long long unsigned int")) | |
2710 | { | |
2711 | spnt->VMS_type = DBG_S_C_UQUAD; /* unsigned quadword */ | |
2712 | spnt->data_size = 8; | |
2713 | } | |
675ad6dc KR |
2714 | else if (type_check ("complex float")) |
2715 | { | |
2716 | spnt->VMS_type = DBG_S_C_COMPLX4; | |
2717 | spnt->data_size = 2 * 4; | |
2718 | } | |
2719 | else if (type_check ("complex double")) | |
2720 | { | |
a9918088 | 2721 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; |
675ad6dc KR |
2722 | spnt->data_size = 2 * 8; |
2723 | } | |
2724 | else if (type_check ("complex long double")) | |
2725 | { | |
2726 | /* same as complex double, at least for now */ | |
a9918088 | 2727 | spnt->VMS_type = vax_g_doubles ? DBG_S_C_COMPLX8_G : DBG_S_C_COMPLX8; |
675ad6dc KR |
2728 | spnt->data_size = 2 * 8; |
2729 | } | |
c06e55d9 KR |
2730 | else |
2731 | { | |
675ad6dc KR |
2732 | /* [pr] |
2733 | * Shouldn't get here, but if we do, something | |
2734 | * more substantial ought to be done... | |
2735 | */ | |
c06e55d9 KR |
2736 | spnt->VMS_type = 0; |
2737 | spnt->data_size = 0; | |
2738 | } | |
a9918088 KR |
2739 | if (spnt->VMS_type != 0) |
2740 | setup_basic_type(spnt); | |
be9618de KR |
2741 | pnt1 = (char *) strchr (str, ';') + 1; |
2742 | break; | |
2743 | case 's': | |
2744 | case 'u': | |
a9918088 | 2745 | spnt->advanced = (*pnt == 's') ? STRUCT : UNION; |
be9618de KR |
2746 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; |
2747 | pnt1 = cvt_integer (pnt + 1, &spnt->data_size); | |
494a6c05 | 2748 | if (!final_pass && forward_reference(pnt)) |
be9618de KR |
2749 | { |
2750 | spnt->struc_numb = -1; | |
2751 | return 1; | |
2752 | } | |
2753 | spnt->struc_numb = ++structure_count; | |
2754 | pnt1--; | |
2755 | pnt = get_struct_name (str); | |
2756 | VMS_Def_Struct (spnt->struc_numb); | |
a9918088 KR |
2757 | i = 0; |
2758 | for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) | |
2759 | if (fpnt->dbx_type == spnt->dbx_type) | |
2760 | { | |
2761 | fpnt->resolved = 'Y'; | |
2762 | VMS_Set_Struct (fpnt->struc_numb); | |
2763 | VMS_Store_Struct (spnt->struc_numb); | |
2764 | i++; | |
2765 | } | |
2766 | if (i > 0) | |
2767 | VMS_Set_Struct (spnt->struc_numb); | |
be9618de KR |
2768 | i = 0; |
2769 | Local[i++] = 11 + strlen (pnt); | |
2770 | Local[i++] = DBG_S_C_STRUCT_START; | |
a9918088 KR |
2771 | Local[i++] = DST_K_VFLAGS_NOVAL; /* structure definition only */ |
2772 | COPY_LONG(&Local[i], 0L); /* hence value is unused */ | |
2773 | i += 4; | |
be9618de KR |
2774 | Local[i++] = strlen (pnt); |
2775 | pnt2 = pnt; | |
2776 | while (*pnt2 != '\0') | |
2777 | Local[i++] = *pnt2++; | |
2778 | i2 = spnt->data_size * 8; /* number of bits */ | |
494a6c05 KR |
2779 | COPY_LONG(&Local[i], i2); |
2780 | i += 4; | |
be9618de KR |
2781 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); |
2782 | i = 0; | |
2783 | if (pnt != symbol_name) | |
2784 | { | |
2785 | pnt += strlen (pnt); | |
2786 | *pnt = ':'; | |
c06e55d9 | 2787 | } /* replace colon for later */ |
be9618de KR |
2788 | while (*++pnt1 != ';') |
2789 | { | |
2790 | pnt = (char *) strchr (pnt1, ':'); | |
2791 | *pnt = '\0'; | |
2792 | pnt2 = pnt1; | |
2793 | pnt1 = cvt_integer (pnt + 1, &dtype); | |
2794 | pnt1 = cvt_integer (pnt1 + 1, &i2); | |
2795 | pnt1 = cvt_integer (pnt1 + 1, &i3); | |
a9918088 KR |
2796 | spnt1 = find_symbol (dtype); |
2797 | len = strlen (pnt2); | |
2798 | if (spnt1 && (spnt1->advanced == BASIC || spnt1->advanced == ENUM) | |
2799 | && ((i3 != spnt1->data_size * 8) || (i2 % 8 != 0))) | |
be9618de | 2800 | { /* bitfield */ |
a9918088 KR |
2801 | if (USE_BITSTRING_DESCRIPTOR (spnt1)) |
2802 | { | |
2803 | /* This uses a type descriptor, which doesn't work if | |
2804 | the enclosing structure has been placed in a register. | |
2805 | Also, enum bitfields degenerate to simple integers. */ | |
2806 | int unsigned_type = (spnt1->VMS_type == DBG_S_C_ULINT | |
2807 | || spnt1->VMS_type == DBG_S_C_USINT | |
2808 | || spnt1->VMS_type == DBG_S_C_UCHAR | |
2809 | || spnt1->VMS_type == DBG_S_C_UQUAD | |
2810 | || spnt1->advanced == ENUM); /* (approximate) */ | |
2811 | Apoint = 0; | |
0509f064 KR |
2812 | fpush (19 + len, 1); |
2813 | fpush (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); | |
2814 | fpush (DST_K_VFLAGS_DSC, 1); /* specified by descriptor */ | |
2815 | fpush (1 + len, 4); /* relative offset to descriptor */ | |
2816 | fpush (len, 1); /* length byte (ascic prefix) */ | |
a9918088 | 2817 | while (*pnt2 != '\0') /* name bytes */ |
0509f064 KR |
2818 | fpush (*pnt2++, 1); |
2819 | fpush (i3, 2); /* dsc length == size of bitfield */ | |
a9918088 | 2820 | /* dsc type == un?signed bitfield */ |
0509f064 KR |
2821 | fpush (unsigned_type ? DBG_S_C_UBITU : DBG_S_C_SBITU, 1); |
2822 | fpush (DSC_K_CLASS_UBS, 1); /* dsc class == unaligned bitstring */ | |
2823 | fpush (0x00, 4); /* dsc pointer == zeroes */ | |
2824 | fpush (i2, 4); /* start position */ | |
a9918088 KR |
2825 | VMS_Store_Immediate_Data (Asuffix, Apoint, OBJ_S_C_DBG); |
2826 | Apoint = 0; | |
2827 | } | |
2828 | else | |
2829 | { | |
2830 | /* Use a "novel length" type specification, which works | |
2831 | right for register structures and for enum bitfields | |
2832 | but results in larger object modules. */ | |
2833 | Local[i++] = 7 + len; | |
2834 | Local[i++] = DBG_S_C_ADVANCED_TYPE; /* type spec follows */ | |
2835 | Local[i++] = DBG_S_C_STRUCT_ITEM; /* value is a bit offset */ | |
2836 | COPY_LONG (&Local[i], i2); /* bit offset */ | |
2837 | i += 4; | |
2838 | Local[i++] = strlen (pnt2); | |
2839 | while (*pnt2 != '\0') | |
2840 | Local[i++] = *pnt2++; | |
2841 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2842 | i = 0; | |
2843 | bitfield_suffix (spnt1, i3); | |
2844 | } | |
be9618de KR |
2845 | } |
2846 | else | |
a9918088 | 2847 | { /* not a bitfield */ |
be9618de | 2848 | /* check if this is a forward reference */ |
494a6c05 KR |
2849 | if(final_pass && final_forward_reference(spnt1)) |
2850 | { | |
703139a8 KR |
2851 | as_tsktsk ("debugger output: structure element `%s' has undefined type", |
2852 | pnt2); | |
494a6c05 KR |
2853 | continue; |
2854 | } | |
a9918088 KR |
2855 | Local[i++] = 7 + len; |
2856 | Local[i++] = spnt1 ? spnt1->VMS_type : DBG_S_C_ADVANCED_TYPE; | |
be9618de | 2857 | Local[i++] = DBG_S_C_STRUCT_ITEM; |
a9918088 | 2858 | COPY_LONG (&Local[i], i2); /* bit offset */ |
494a6c05 | 2859 | i += 4; |
be9618de KR |
2860 | Local[i++] = strlen (pnt2); |
2861 | while (*pnt2 != '\0') | |
2862 | Local[i++] = *pnt2++; | |
2863 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2864 | i = 0; | |
a9918088 | 2865 | if (!spnt1) |
be9618de KR |
2866 | generate_suffix (spnt1, dtype); |
2867 | else if (spnt1->VMS_type == DBG_S_C_ADVANCED_TYPE) | |
2868 | generate_suffix (spnt1, 0); | |
c06e55d9 KR |
2869 | } |
2870 | } | |
be9618de KR |
2871 | pnt1++; |
2872 | Local[i++] = 0x01; /* length byte */ | |
2873 | Local[i++] = DBG_S_C_STRUCT_END; | |
2874 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2875 | i = 0; | |
2876 | break; | |
2877 | case 'e': | |
2878 | spnt->advanced = ENUM; | |
2879 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2880 | spnt->struc_numb = ++structure_count; | |
2881 | spnt->data_size = 4; | |
2882 | VMS_Def_Struct (spnt->struc_numb); | |
be9618de | 2883 | i = 0; |
a9918088 KR |
2884 | for (fpnt = f_ref_root; fpnt; fpnt = fpnt->next) |
2885 | if (fpnt->dbx_type == spnt->dbx_type) | |
2886 | { | |
2887 | fpnt->resolved = 'Y'; | |
2888 | VMS_Set_Struct (fpnt->struc_numb); | |
2889 | VMS_Store_Struct (spnt->struc_numb); | |
2890 | i++; | |
2891 | } | |
2892 | if (i > 0) | |
2893 | VMS_Set_Struct (spnt->struc_numb); | |
2894 | i = 0; | |
2895 | len = strlen (symbol_name); | |
2896 | Local[i++] = 3 + len; | |
be9618de | 2897 | Local[i++] = DBG_S_C_ENUM_START; |
a9918088 KR |
2898 | Local[i++] = 4 * 8; /* enum values are 32 bits */ |
2899 | Local[i++] = len; | |
be9618de KR |
2900 | pnt2 = symbol_name; |
2901 | while (*pnt2 != '\0') | |
2902 | Local[i++] = *pnt2++; | |
2903 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2904 | i = 0; | |
2905 | while (*++pnt != ';') | |
2906 | { | |
2907 | pnt1 = (char *) strchr (pnt, ':'); | |
2908 | *pnt1++ = '\0'; | |
2909 | pnt1 = cvt_integer (pnt1, &i1); | |
a9918088 KR |
2910 | len = strlen (pnt); |
2911 | Local[i++] = 7 + len; | |
be9618de | 2912 | Local[i++] = DBG_S_C_ENUM_ITEM; |
a9918088 | 2913 | Local[i++] = DST_K_VALKIND_LITERAL; |
494a6c05 KR |
2914 | COPY_LONG (&Local[i], i1); |
2915 | i += 4; | |
a9918088 | 2916 | Local[i++] = len; |
be9618de KR |
2917 | pnt2 = pnt; |
2918 | while (*pnt != '\0') | |
2919 | Local[i++] = *pnt++; | |
2920 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2921 | i = 0; | |
2922 | pnt = pnt1; /* Skip final semicolon */ | |
c06e55d9 | 2923 | } |
be9618de KR |
2924 | Local[i++] = 0x01; /* len byte */ |
2925 | Local[i++] = DBG_S_C_ENUM_END; | |
2926 | VMS_Store_Immediate_Data (Local, i, OBJ_S_C_DBG); | |
2927 | i = 0; | |
2928 | pnt1 = pnt + 1; | |
2929 | break; | |
2930 | case 'a': | |
2931 | spnt->advanced = ARRAY; | |
2932 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2933 | pnt = (char *) strchr (pnt, ';'); | |
b003a2d9 | 2934 | if (!pnt) |
be9618de KR |
2935 | return 1; |
2936 | pnt1 = cvt_integer (pnt + 1, &spnt->index_min); | |
2937 | pnt1 = cvt_integer (pnt1 + 1, &spnt->index_max); | |
2938 | pnt1 = cvt_integer (pnt1 + 1, &spnt->type2); | |
b003a2d9 KR |
2939 | pnt = (char *) strchr (str + 1, '='); |
2940 | if (pnt && VMS_typedef_parse (pnt) == 1) | |
2941 | return 1; | |
be9618de KR |
2942 | break; |
2943 | case 'f': | |
2944 | spnt->advanced = FUNCTION; | |
2945 | spnt->VMS_type = DBG_S_C_FUNCTION_ADDR; | |
2946 | /* this masquerades as a basic type*/ | |
2947 | spnt->data_size = 4; | |
2948 | pnt1 = cvt_integer (pnt + 1, &spnt->type2); | |
2949 | break; | |
2950 | case '*': | |
2951 | spnt->advanced = POINTER; | |
2952 | spnt->VMS_type = DBG_S_C_ADVANCED_TYPE; | |
2953 | spnt->data_size = 4; | |
2954 | pnt1 = cvt_integer (pnt + 1, &spnt->type2); | |
2955 | pnt = (char *) strchr (str + 1, '='); | |
b003a2d9 KR |
2956 | if (pnt && VMS_typedef_parse (pnt) == 1) |
2957 | return 1; | |
be9618de KR |
2958 | break; |
2959 | default: | |
2960 | spnt->advanced = UNKNOWN; | |
2961 | spnt->VMS_type = 0; | |
703139a8 KR |
2962 | as_tsktsk ("debugger output: %d is an unknown type of variable.", |
2963 | spnt->dbx_type); | |
be9618de | 2964 | return 1; /* unable to decipher */ |
c06e55d9 | 2965 | } |
be9618de KR |
2966 | /* this removes the evidence of the definition so that the outer levels of |
2967 | parsing do not have to worry about it */ | |
2968 | pnt = str; | |
2969 | while (*pnt1 != '\0') | |
2970 | *pnt++ = *pnt1++; | |
2971 | *pnt = '\0'; | |
2972 | return 0; | |
2973 | } | |
2974 | ||
2975 | ||
2976 | /* | |
2977 | * This is the root routine that parses the stabs entries for definitions. | |
2978 | * it calls VMS_typedef_parse, which can in turn call itself. | |
2979 | * We need to be careful, since sometimes there are forward references to | |
2980 | * other symbol types, and these cannot be resolved until we have completed | |
2981 | * the parse. | |
494a6c05 KR |
2982 | * |
2983 | * Also check and see if we are using continuation stabs, if we are, then | |
2984 | * paste together the entire contents of the stab before we pass it to | |
2985 | * VMS_typedef_parse. | |
be9618de | 2986 | */ |
8e86815b | 2987 | static void |
be9618de KR |
2988 | VMS_LSYM_Parse () |
2989 | { | |
2990 | char *pnt; | |
2991 | char *pnt1; | |
2992 | char *pnt2; | |
2993 | char *str; | |
494a6c05 | 2994 | char *parse_buffer = 0; |
be9618de | 2995 | char fixit[10]; |
8e86815b | 2996 | int incomplete, pass, incom1; |
be9618de KR |
2997 | struct forward_ref *fpnt; |
2998 | symbolS *sp; | |
8e86815b | 2999 | |
be9618de | 3000 | pass = 0; |
494a6c05 | 3001 | final_pass = 0; |
be9618de KR |
3002 | incomplete = 0; |
3003 | do | |
3004 | { | |
3005 | incom1 = incomplete; | |
3006 | incomplete = 0; | |
3007 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
3008 | { | |
3009 | /* | |
3010 | * Deal with STAB symbols | |
3011 | */ | |
3012 | if (S_IS_DEBUG (sp)) | |
3013 | { | |
3014 | /* | |
3015 | * Dispatch on STAB type | |
3016 | */ | |
3017 | switch (S_GET_RAW_TYPE (sp)) | |
3018 | { | |
3019 | case N_GSYM: | |
3020 | case N_LCSYM: | |
3021 | case N_STSYM: | |
3022 | case N_PSYM: | |
3023 | case N_RSYM: | |
3024 | case N_LSYM: | |
3025 | case N_FUN: /*sometimes these contain typedefs*/ | |
3026 | str = S_GET_NAME (sp); | |
3027 | symbol_name = str; | |
494a6c05 KR |
3028 | pnt = str + strlen(str) -1; |
3029 | if (*pnt == '?') /* Continuation stab. */ | |
3030 | { | |
3031 | symbolS *spnext; | |
3032 | int tlen = 0; | |
8e86815b | 3033 | |
494a6c05 KR |
3034 | spnext = sp; |
3035 | do { | |
3036 | tlen += strlen(str) - 1; | |
3037 | spnext = symbol_next (spnext); | |
3038 | str = S_GET_NAME (spnext); | |
3039 | pnt = str + strlen(str) - 1; | |
3040 | } while (*pnt == '?'); | |
3041 | tlen += strlen(str); | |
c06e55d9 | 3042 | parse_buffer = (char *) xmalloc (tlen + 1); |
494a6c05 KR |
3043 | strcpy(parse_buffer, S_GET_NAME (sp)); |
3044 | pnt2 = parse_buffer + strlen(S_GET_NAME (sp)) - 1; | |
3045 | *pnt2 = '\0'; | |
3046 | spnext = sp; | |
3047 | do { | |
3048 | spnext = symbol_next (spnext); | |
3049 | str = S_GET_NAME (spnext); | |
3050 | strcat (pnt2, S_GET_NAME (spnext)); | |
3051 | pnt2 += strlen(str) - 1; | |
3052 | *str = '\0'; /* Erase this string */ | |
3053 | if (*pnt2 != '?') break; | |
3054 | *pnt2 = '\0'; | |
3055 | } while (1 == 1); | |
3056 | str = parse_buffer; | |
3057 | symbol_name = str; | |
c06e55d9 | 3058 | } |
be9618de | 3059 | pnt = (char *) strchr (str, ':'); |
494a6c05 | 3060 | if (pnt != (char *) NULL) |
be9618de | 3061 | { |
494a6c05 KR |
3062 | *pnt = '\0'; |
3063 | pnt1 = pnt + 1; | |
3064 | pnt2 = (char *) strchr (pnt1, '='); | |
3065 | if (pnt2 != (char *) NULL) | |
3066 | incomplete += VMS_typedef_parse (pnt2); | |
3c650d09 KR |
3067 | if (parse_buffer) |
3068 | { | |
3069 | /* At this point the parse buffer should just | |
3070 | contain name:nn. If it does not, then we | |
3071 | are in real trouble. Anyway, this is always | |
3072 | shorter than the original line. */ | |
3073 | strcpy (S_GET_NAME (sp), parse_buffer); | |
3074 | free (parse_buffer); | |
3075 | parse_buffer = 0; | |
3076 | } | |
3077 | *pnt = ':'; /* put back colon to restore dbx_type */ | |
c06e55d9 | 3078 | } |
be9618de KR |
3079 | break; |
3080 | } /*switch*/ | |
3081 | } /* if */ | |
3082 | } /*for*/ | |
3083 | pass++; | |
494a6c05 KR |
3084 | /* Make one last pass, if needed, and define whatever we can that is left */ |
3085 | if(final_pass == 0 && incomplete == incom1) | |
3086 | { | |
3087 | final_pass = 1; | |
3088 | incom1 ++; /* Force one last pass through */ | |
c06e55d9 | 3089 | } |
be9618de KR |
3090 | } while ((incomplete != 0) && (incomplete != incom1)); |
3091 | /* repeat until all refs resolved if possible */ | |
3092 | /* if (pass > 1) printf(" Required %d passes\n",pass);*/ | |
3093 | if (incomplete != 0) | |
3094 | { | |
703139a8 KR |
3095 | as_tsktsk ("debugger output: Unable to resolve %d circular references.", |
3096 | incomplete); | |
c06e55d9 | 3097 | } |
be9618de KR |
3098 | fpnt = f_ref_root; |
3099 | symbol_name = "\0"; | |
3100 | while (fpnt != (struct forward_ref *) NULL) | |
3101 | { | |
3102 | if (fpnt->resolved != 'Y') | |
3103 | { | |
3104 | if (find_symbol (fpnt->dbx_type) != | |
3105 | (struct VMS_DBG_Symbol *) NULL) | |
3106 | { | |
703139a8 KR |
3107 | as_tsktsk ("debugger forward reference error, dbx type %d", |
3108 | fpnt->dbx_type); | |
be9618de | 3109 | break; |
c06e55d9 | 3110 | } |
be9618de KR |
3111 | fixit[0] = 0; |
3112 | sprintf (&fixit[1], "%d=s4;", fpnt->dbx_type); | |
3113 | pnt2 = (char *) strchr (&fixit[1], '='); | |
3114 | VMS_typedef_parse (pnt2); | |
c06e55d9 | 3115 | } |
be9618de | 3116 | fpnt = fpnt->next; |
c06e55d9 | 3117 | } |
be9618de KR |
3118 | } |
3119 | ||
8e86815b | 3120 | static void |
4596bc7a KR |
3121 | Define_Local_Symbols (s0P, s2P, Current_Routine, Text_Psect) |
3122 | symbolS *s0P, *s2P; | |
3123 | symbolS *Current_Routine; | |
3124 | int Text_Psect; | |
be9618de | 3125 | { |
4596bc7a KR |
3126 | symbolS *s1P; /* each symbol from s0P .. s2P (exclusive) */ |
3127 | ||
3128 | for (s1P = symbol_next (s0P); s1P != s2P; s1P = symbol_next (s1P)) | |
be9618de | 3129 | { |
4596bc7a KR |
3130 | if (!s1P) |
3131 | break; /* and return */ | |
3132 | if (S_GET_RAW_TYPE (s1P) == N_FUN) | |
be9618de | 3133 | { |
4596bc7a | 3134 | char *pnt = (char *) strchr (S_GET_NAME (s1P), ':') + 1; |
be9618de | 3135 | if (*pnt == 'F' || *pnt == 'f') break; |
c06e55d9 | 3136 | } |
4596bc7a KR |
3137 | if (!S_IS_DEBUG (s1P)) |
3138 | continue; | |
be9618de | 3139 | /* |
4596bc7a | 3140 | * Dispatch on STAB type |
be9618de | 3141 | */ |
4596bc7a | 3142 | switch (S_GET_RAW_TYPE (s1P)) |
be9618de | 3143 | { |
4596bc7a KR |
3144 | default: |
3145 | continue; /* not left or right brace */ | |
3146 | ||
3147 | case N_LSYM: | |
3148 | case N_PSYM: | |
3149 | VMS_local_stab_Parse (s1P); | |
3150 | break; | |
3151 | ||
3152 | case N_RSYM: | |
3153 | VMS_RSYM_Parse (s1P, Current_Routine, Text_Psect); | |
3154 | break; | |
3155 | } /*switch*/ | |
be9618de KR |
3156 | } /* for */ |
3157 | } | |
3158 | ||
3159 | \f | |
3160 | /* This function crawls the symbol chain searching for local symbols that need | |
3161 | * to be described to the debugger. When we enter a new scope with a "{", it | |
3162 | * creates a new "block", which helps the debugger keep track of which scope | |
3163 | * we are currently in. | |
3164 | */ | |
3165 | ||
3166 | static symbolS * | |
4596bc7a KR |
3167 | Define_Routine (s0P, Level, Current_Routine, Text_Psect) |
3168 | symbolS *s0P; | |
be9618de | 3169 | int Level; |
4596bc7a KR |
3170 | symbolS *Current_Routine; |
3171 | int Text_Psect; | |
be9618de | 3172 | { |
4596bc7a KR |
3173 | symbolS *s1P; |
3174 | valueT Offset; | |
be9618de | 3175 | int rcount = 0; |
4596bc7a KR |
3176 | |
3177 | for (s1P = symbol_next (s0P); s1P != 0; s1P = symbol_next (s1P)) | |
be9618de | 3178 | { |
4596bc7a | 3179 | if (S_GET_RAW_TYPE (s1P) == N_FUN) |
be9618de | 3180 | { |
4596bc7a | 3181 | char *pnt = (char *) strchr (S_GET_NAME (s1P), ':') + 1; |
be9618de | 3182 | if (*pnt == 'F' || *pnt == 'f') break; |
c06e55d9 | 3183 | } |
4596bc7a KR |
3184 | if (!S_IS_DEBUG (s1P)) |
3185 | continue; | |
be9618de | 3186 | /* |
4596bc7a | 3187 | * Dispatch on STAB type |
be9618de | 3188 | */ |
4596bc7a | 3189 | switch (S_GET_RAW_TYPE (s1P)) |
be9618de | 3190 | { |
4596bc7a KR |
3191 | default: |
3192 | continue; /* not left or right brace */ | |
3193 | ||
3194 | case N_LBRAC: | |
3195 | if (Level != 0) | |
be9618de | 3196 | { |
4596bc7a KR |
3197 | char str[10]; |
3198 | sprintf (str, "$%d", rcount++); | |
3199 | VMS_TBT_Block_Begin (s1P, Text_Psect, str); | |
3200 | } | |
3201 | Offset = S_GET_VALUE (s1P); /* side-effect: fully resolve symbol */ | |
3202 | Define_Local_Symbols (s0P, s1P, Current_Routine, Text_Psect); | |
3203 | s1P = Define_Routine (s1P, Level + 1, Current_Routine, Text_Psect); | |
3204 | if (Level != 0) | |
3205 | VMS_TBT_Block_End (S_GET_VALUE (s1P) - Offset); | |
3206 | s0P = s1P; | |
3207 | break; | |
3208 | ||
3209 | case N_RBRAC: | |
3210 | return s1P; | |
3211 | } /*switch*/ | |
be9618de | 3212 | } /* for */ |
be9618de | 3213 | |
4596bc7a KR |
3214 | /* We end up here if there were no brackets in this function. |
3215 | Define everything. */ | |
3216 | Define_Local_Symbols (s0P, (symbolS *)0, Current_Routine, Text_Psect); | |
3217 | return s1P; | |
be9618de KR |
3218 | } |
3219 | \f | |
3220 | ||
b9419dd2 | 3221 | #ifndef VMS |
be9618de KR |
3222 | #include <sys/types.h> |
3223 | #include <time.h> | |
4b18b7cd | 3224 | static void get_VMS_time_on_unix PARAMS ((char *)); |
be9618de | 3225 | |
4b18b7cd KR |
3226 | /* Manufacture a VMS-like time string on a Unix based system. */ |
3227 | static void | |
db4e0f90 KR |
3228 | get_VMS_time_on_unix (Now) |
3229 | char *Now; | |
be9618de KR |
3230 | { |
3231 | char *pnt; | |
3232 | time_t timeb; | |
4b18b7cd | 3233 | |
be9618de KR |
3234 | time (&timeb); |
3235 | pnt = ctime (&timeb); | |
3236 | pnt[3] = 0; | |
3237 | pnt[7] = 0; | |
3238 | pnt[10] = 0; | |
3239 | pnt[16] = 0; | |
3240 | pnt[24] = 0; | |
3241 | sprintf (Now, "%2s-%3s-%s %s", pnt + 8, pnt + 4, pnt + 20, pnt + 11); | |
3242 | } | |
b9419dd2 | 3243 | #endif /* not VMS */ |
4b18b7cd | 3244 | |
be9618de KR |
3245 | /* |
3246 | * Write the MHD (Module Header) records | |
3247 | */ | |
8e86815b | 3248 | static void |
be9618de KR |
3249 | Write_VMS_MHD_Records () |
3250 | { | |
f2224fe2 KR |
3251 | register const char *cp; |
3252 | register char *cp1; | |
be9618de | 3253 | register int i; |
3c650d09 KR |
3254 | #ifdef VMS |
3255 | struct { unsigned short len, mbz; char *ptr; } Descriptor; | |
3256 | #endif | |
3257 | char Module_Name[255+1]; | |
3258 | char Now[17+1]; | |
be9618de KR |
3259 | |
3260 | /* | |
3261 | * We are writing a module header record | |
3262 | */ | |
3263 | Set_VMS_Object_File_Record (OBJ_S_C_HDR); | |
3264 | /* | |
3265 | * *************************** | |
3266 | * *MAIN MODULE HEADER RECORD* | |
3267 | * *************************** | |
3268 | * | |
3269 | * Store record type and header type | |
3270 | */ | |
3271 | PUT_CHAR (OBJ_S_C_HDR); | |
3272 | PUT_CHAR (MHD_S_C_MHD); | |
3273 | /* | |
3274 | * Structure level is 0 | |
3275 | */ | |
3276 | PUT_CHAR (OBJ_S_C_STRLVL); | |
3277 | /* | |
3278 | * Maximum record size is size of the object record buffer | |
3279 | */ | |
3280 | PUT_SHORT (sizeof (Object_Record_Buffer)); | |
3c650d09 KR |
3281 | |
3282 | /* | |
3283 | * FIXME: module name and version should be user | |
3284 | * specifiable via `.ident' and/or `#pragma ident'. | |
3285 | */ | |
3286 | ||
be9618de KR |
3287 | /* |
3288 | * Get module name (the FILENAME part of the object file) | |
3289 | */ | |
3290 | cp = out_file_name; | |
3291 | cp1 = Module_Name; | |
3292 | while (*cp) | |
3293 | { | |
3294 | if ((*cp == ']') || (*cp == '>') || | |
3295 | (*cp == ':') || (*cp == '/')) | |
3296 | { | |
3297 | cp1 = Module_Name; | |
3298 | cp++; | |
3299 | continue; | |
3300 | } | |
3301 | *cp1++ = islower (*cp) ? toupper (*cp++) : *cp++; | |
3302 | } | |
3303 | *cp1 = 0; | |
3304 | /* | |
3305 | * Limit it to 31 characters and store in the object record | |
3306 | */ | |
3307 | while (--cp1 >= Module_Name) | |
3308 | if (*cp1 == '.') | |
3309 | *cp1 = 0; | |
3310 | if (strlen (Module_Name) > 31) | |
3311 | { | |
def66e24 | 3312 | if (flag_hash_long_names) |
3c650d09 | 3313 | as_tsktsk ("Module name truncated: %s\n", Module_Name); |
be9618de KR |
3314 | Module_Name[31] = 0; |
3315 | } | |
3316 | PUT_COUNTED_STRING (Module_Name); | |
3317 | /* | |
3318 | * Module Version is "V1.0" | |
3319 | */ | |
3320 | PUT_COUNTED_STRING ("V1.0"); | |
3321 | /* | |
3c650d09 | 3322 | * Creation time is "now" (17 chars of time string): "dd-MMM-yyyy hh:mm". |
be9618de | 3323 | */ |
b9419dd2 | 3324 | #ifndef VMS |
3c650d09 | 3325 | get_VMS_time_on_unix (Now); |
b9419dd2 | 3326 | #else /* VMS */ |
3c650d09 KR |
3327 | Descriptor.len = sizeof Now - 1; |
3328 | Descriptor.mbz = 0; /* type & class unspecified */ | |
3329 | Descriptor.ptr = Now; | |
3330 | (void) sys$asctim ((unsigned short *)0, &Descriptor, (long *)0, 0); | |
b9419dd2 | 3331 | #endif /* VMS */ |
be9618de KR |
3332 | for (i = 0; i < 17; i++) |
3333 | PUT_CHAR (Now[i]); | |
3334 | /* | |
3335 | * Patch time is "never" (17 zeros) | |
3336 | */ | |
3337 | for (i = 0; i < 17; i++) | |
3338 | PUT_CHAR (0); | |
3339 | /* | |
3340 | * Flush the record | |
3341 | */ | |
3342 | Flush_VMS_Object_Record_Buffer (); | |
3343 | /* | |
3344 | * ************************* | |
3345 | * *LANGUAGE PROCESSOR NAME* | |
3346 | * ************************* | |
3347 | * | |
3348 | * Store record type and header type | |
3349 | */ | |
3350 | PUT_CHAR (OBJ_S_C_HDR); | |
3351 | PUT_CHAR (MHD_S_C_LNM); | |
3352 | /* | |
3353 | * Store language processor name and version | |
3354 | * (not a counted string!) | |
c06e55d9 KR |
3355 | * |
3356 | * This is normally supplied by the gcc driver for the command line | |
3357 | * which invokes gas. If absent, we fall back to gas's version. | |
be9618de KR |
3358 | */ |
3359 | cp = compiler_version_string; | |
3360 | if (cp == 0) | |
3361 | { | |
3362 | cp = "GNU AS V"; | |
3363 | while (*cp) | |
3364 | PUT_CHAR (*cp++); | |
c06e55d9 KR |
3365 | cp = GAS_VERSION; |
3366 | } | |
3367 | while (*cp >= ' ') | |
be9618de KR |
3368 | PUT_CHAR (*cp++); |
3369 | /* | |
3370 | * Flush the record | |
3371 | */ | |
3372 | Flush_VMS_Object_Record_Buffer (); | |
3373 | } | |
3374 | \f | |
3375 | ||
3376 | /* | |
3377 | * Write the EOM (End Of Module) record | |
3378 | */ | |
8e86815b | 3379 | static void |
be9618de KR |
3380 | Write_VMS_EOM_Record (Psect, Offset) |
3381 | int Psect; | |
3382 | int Offset; | |
3383 | { | |
3384 | /* | |
3385 | * We are writing an end-of-module record | |
b003a2d9 KR |
3386 | * (this assumes that the entry point will always be in a psect |
3387 | * represented by a single byte, which is the case for code in | |
3388 | * Text_Psect==0) | |
be9618de KR |
3389 | */ |
3390 | Set_VMS_Object_File_Record (OBJ_S_C_EOM); | |
4596bc7a KR |
3391 | PUT_CHAR (OBJ_S_C_EOM); /* Record type. */ |
3392 | PUT_CHAR (0); /* Error severity level (we ignore it). */ | |
be9618de KR |
3393 | /* |
3394 | * Store the entry point, if it exists | |
3395 | */ | |
3396 | if (Psect >= 0) | |
3397 | { | |
be9618de | 3398 | PUT_CHAR (Psect); |
be9618de KR |
3399 | PUT_LONG (Offset); |
3400 | } | |
3401 | /* | |
3402 | * Flush the record | |
3403 | */ | |
3404 | Flush_VMS_Object_Record_Buffer (); | |
3405 | } | |
3406 | \f | |
3407 | ||
3408 | /* this hash routine borrowed from GNU-EMACS, and strengthened slightly ERY*/ | |
3409 | ||
3410 | static int | |
3411 | hash_string (ptr) | |
4b18b7cd | 3412 | const char *ptr; |
be9618de | 3413 | { |
4b18b7cd KR |
3414 | register const unsigned char *p = (unsigned char *) ptr; |
3415 | register const unsigned char *end = p + strlen (ptr); | |
be9618de KR |
3416 | register unsigned char c; |
3417 | register int hash = 0; | |
3418 | ||
3419 | while (p != end) | |
3420 | { | |
3421 | c = *p++; | |
3422 | hash = ((hash << 3) + (hash << 15) + (hash >> 28) + c); | |
3423 | } | |
3424 | return hash; | |
3425 | } | |
3426 | ||
3427 | /* | |
3428 | * Generate a Case-Hacked VMS symbol name (limited to 31 chars) | |
3429 | */ | |
8e86815b | 3430 | static void |
be9618de | 3431 | VMS_Case_Hack_Symbol (In, Out) |
4b18b7cd | 3432 | register const char *In; |
be9618de KR |
3433 | register char *Out; |
3434 | { | |
8e86815b | 3435 | long int init; |
be9618de | 3436 | long int result; |
8e86815b | 3437 | char *pnt = 0; |
be9618de | 3438 | char *new_name; |
4b18b7cd | 3439 | const char *old_name; |
be9618de KR |
3440 | register int i; |
3441 | int destructor = 0; /*hack to allow for case sens in a destructor*/ | |
3442 | int truncate = 0; | |
3443 | int Case_Hack_Bits = 0; | |
3444 | int Saw_Dollar = 0; | |
3445 | static char Hex_Table[16] = | |
3446 | {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; | |
3447 | ||
3448 | /* | |
3449 | * Kill any leading "_" | |
3450 | */ | |
3451 | if ((In[0] == '_') && ((In[1] > '9') || (In[1] < '0'))) | |
3452 | In++; | |
3453 | ||
3454 | new_name = Out; /* save this for later*/ | |
3455 | ||
3456 | #if barfoo /* Dead code */ | |
3457 | if ((In[0] == '_') && (In[1] == '$') && (In[2] == '_')) | |
3458 | destructor = 1; | |
3459 | #endif | |
3460 | ||
3461 | /* We may need to truncate the symbol, save the hash for later*/ | |
8e86815b | 3462 | result = (strlen (In) > 23) ? hash_string (In) : 0; |
be9618de KR |
3463 | /* |
3464 | * Is there a Psect Attribute to skip?? | |
3465 | */ | |
3466 | if (HAS_PSECT_ATTRIBUTES (In)) | |
3467 | { | |
3468 | /* | |
3469 | * Yes: Skip it | |
3470 | */ | |
3471 | In += PSECT_ATTRIBUTES_STRING_LENGTH; | |
3472 | while (*In) | |
3473 | { | |
3474 | if ((In[0] == '$') && (In[1] == '$')) | |
3475 | { | |
3476 | In += 2; | |
3477 | break; | |
3478 | } | |
3479 | In++; | |
3480 | } | |
3481 | } | |
3482 | ||
3483 | old_name = In; | |
def66e24 | 3484 | /* if (strlen(In) > 31 && flag_hash_long_names) |
3c650d09 | 3485 | as_tsktsk("Symbol name truncated: %s\n", In); */ |
be9618de KR |
3486 | /* |
3487 | * Do the case conversion | |
3488 | */ | |
3489 | i = 23; /* Maximum of 23 chars */ | |
3490 | while (*In && (--i >= 0)) | |
3491 | { | |
3492 | Case_Hack_Bits <<= 1; | |
3493 | if (*In == '$') | |
3494 | Saw_Dollar = 1; | |
3495 | if ((destructor == 1) && (i == 21)) | |
3496 | Saw_Dollar = 0; | |
3497 | switch (vms_name_mapping) | |
3498 | { | |
3499 | case 0: | |
3500 | if (isupper(*In)) { | |
3501 | *Out++ = *In++; | |
3502 | Case_Hack_Bits |= 1; | |
3503 | } else { | |
3504 | *Out++ = islower(*In) ? toupper(*In++) : *In++; | |
3505 | } | |
3506 | break; | |
3507 | case 3: *Out++ = *In++; | |
3508 | break; | |
3509 | case 2: | |
3510 | if (islower(*In)) { | |
3511 | *Out++ = *In++; | |
3512 | } else { | |
3513 | *Out++ = isupper(*In) ? tolower(*In++) : *In++; | |
3514 | } | |
3515 | break; | |
c06e55d9 | 3516 | } |
be9618de KR |
3517 | } |
3518 | /* | |
3519 | * If we saw a dollar sign, we don't do case hacking | |
3520 | */ | |
def66e24 | 3521 | if (flag_no_hash_mixed_case || Saw_Dollar) |
be9618de KR |
3522 | Case_Hack_Bits = 0; |
3523 | ||
3524 | /* | |
3525 | * If we have more than 23 characters and everything is lowercase | |
3526 | * we can insert the full 31 characters | |
3527 | */ | |
3528 | if (*In) | |
3529 | { | |
3530 | /* | |
3531 | * We have more than 23 characters | |
3532 | * If we must add the case hack, then we have truncated the str | |
3533 | */ | |
3534 | pnt = Out; | |
3535 | truncate = 1; | |
3536 | if (Case_Hack_Bits == 0) | |
3537 | { | |
3538 | /* | |
3539 | * And so far they are all lower case: | |
3540 | * Check up to 8 more characters | |
3541 | * and ensure that they are lowercase | |
3542 | */ | |
3543 | for (i = 0; (In[i] != 0) && (i < 8); i++) | |
def66e24 | 3544 | if (isupper(In[i]) && !Saw_Dollar && !flag_no_hash_mixed_case) |
be9618de KR |
3545 | break; |
3546 | ||
3547 | if (In[i] == 0) | |
3548 | truncate = 0; | |
3549 | ||
3550 | if ((i == 8) || (In[i] == 0)) | |
3551 | { | |
3552 | /* | |
3553 | * They are: Copy up to 31 characters | |
3554 | * to the output string | |
3555 | */ | |
3556 | i = 8; | |
3557 | while ((--i >= 0) && (*In)) | |
3558 | switch (vms_name_mapping){ | |
3559 | case 0: *Out++ = islower(*In) ? | |
3560 | toupper (*In++) : | |
3561 | *In++; | |
3562 | break; | |
3563 | case 3: *Out++ = *In++; | |
3564 | break; | |
3565 | case 2: *Out++ = isupper(*In) ? | |
3566 | tolower(*In++) : | |
3567 | *In++; | |
3568 | break; | |
c06e55d9 | 3569 | } |
be9618de KR |
3570 | } |
3571 | } | |
3572 | } | |
3573 | /* | |
3574 | * If there were any uppercase characters in the name we | |
3575 | * take on the case hacking string | |
3576 | */ | |
3577 | ||
3578 | /* Old behavior for regular GNU-C compiler */ | |
def66e24 | 3579 | if (!flag_hash_long_names) |
be9618de KR |
3580 | truncate = 0; |
3581 | if ((Case_Hack_Bits != 0) || (truncate == 1)) | |
3582 | { | |
3583 | if (truncate == 0) | |
3584 | { | |
3585 | *Out++ = '_'; | |
3586 | for (i = 0; i < 6; i++) | |
3587 | { | |
3588 | *Out++ = Hex_Table[Case_Hack_Bits & 0xf]; | |
3589 | Case_Hack_Bits >>= 4; | |
3590 | } | |
3591 | *Out++ = 'X'; | |
3592 | } | |
3593 | else | |
3594 | { | |
3595 | Out = pnt; /*Cut back to 23 characters maximum */ | |
3596 | *Out++ = '_'; | |
3597 | for (i = 0; i < 7; i++) | |
3598 | { | |
3599 | init = result & 0x01f; | |
8e86815b | 3600 | *Out++ = (init < 10) ? ('0' + init) : ('A' + init - 10); |
be9618de KR |
3601 | result = result >> 5; |
3602 | } | |
3603 | } | |
3604 | } /*Case Hack */ | |
3605 | /* | |
3606 | * Done | |
3607 | */ | |
3608 | *Out = 0; | |
def66e24 | 3609 | if (truncate == 1 && flag_hash_long_names && flag_show_after_trunc) |
3c650d09 | 3610 | as_tsktsk ("Symbol %s replaced by %s\n", old_name, new_name); |
be9618de KR |
3611 | } |
3612 | \f | |
3613 | ||
3614 | /* | |
3615 | * Scan a symbol name for a psect attribute specification | |
3616 | */ | |
3617 | #define GLOBALSYMBOL_BIT 0x10000 | |
3618 | #define GLOBALVALUE_BIT 0x20000 | |
3619 | ||
3620 | ||
8e86815b | 3621 | static void |
be9618de | 3622 | VMS_Modify_Psect_Attributes (Name, Attribute_Pointer) |
4b18b7cd | 3623 | const char *Name; |
be9618de KR |
3624 | int *Attribute_Pointer; |
3625 | { | |
3626 | register int i; | |
4b18b7cd | 3627 | register const char *cp; |
be9618de | 3628 | int Negate; |
f2224fe2 | 3629 | static const struct |
be9618de | 3630 | { |
f2224fe2 | 3631 | const char *Name; |
be9618de KR |
3632 | int Value; |
3633 | } Attributes[] = | |
3634 | { | |
3635 | {"PIC", GPS_S_M_PIC}, | |
3636 | {"LIB", GPS_S_M_LIB}, | |
3637 | {"OVR", GPS_S_M_OVR}, | |
3638 | {"REL", GPS_S_M_REL}, | |
3639 | {"GBL", GPS_S_M_GBL}, | |
3640 | {"SHR", GPS_S_M_SHR}, | |
3641 | {"EXE", GPS_S_M_EXE}, | |
3642 | {"RD", GPS_S_M_RD}, | |
3643 | {"WRT", GPS_S_M_WRT}, | |
3644 | {"VEC", GPS_S_M_VEC}, | |
3645 | {"GLOBALSYMBOL", GLOBALSYMBOL_BIT}, | |
3646 | {"GLOBALVALUE", GLOBALVALUE_BIT}, | |
3647 | {0, 0} | |
3648 | }; | |
3649 | ||
3650 | /* | |
3651 | * Kill leading "_" | |
3652 | */ | |
3653 | if (*Name == '_') | |
3654 | Name++; | |
3655 | /* | |
3656 | * Check for a PSECT attribute list | |
3657 | */ | |
3658 | if (!HAS_PSECT_ATTRIBUTES (Name)) | |
3659 | return; /* If not, return */ | |
3660 | /* | |
3661 | * Skip the attribute list indicator | |
3662 | */ | |
3663 | Name += PSECT_ATTRIBUTES_STRING_LENGTH; | |
3664 | /* | |
3665 | * Process the attributes ("_" separated, "$" terminated) | |
3666 | */ | |
3667 | while (*Name != '$') | |
3668 | { | |
3669 | /* | |
3670 | * Assume not negating | |
3671 | */ | |
3672 | Negate = 0; | |
3673 | /* | |
3674 | * Check for "NO" | |
3675 | */ | |
3676 | if ((Name[0] == 'N') && (Name[1] == 'O')) | |
3677 | { | |
3678 | /* | |
3679 | * We are negating (and skip the NO) | |
3680 | */ | |
3681 | Negate = 1; | |
3682 | Name += 2; | |
3683 | } | |
3684 | /* | |
3685 | * Find the token delimiter | |
3686 | */ | |
3687 | cp = Name; | |
3688 | while (*cp && (*cp != '_') && (*cp != '$')) | |
3689 | cp++; | |
3690 | /* | |
3691 | * Look for the token in the attribute list | |
3692 | */ | |
3693 | for (i = 0; Attributes[i].Name; i++) | |
3694 | { | |
3695 | /* | |
3696 | * If the strings match, set/clear the attr. | |
3697 | */ | |
3698 | if (strncmp (Name, Attributes[i].Name, cp - Name) == 0) | |
3699 | { | |
3700 | /* | |
3701 | * Set or clear | |
3702 | */ | |
3703 | if (Negate) | |
3704 | *Attribute_Pointer &= | |
3705 | ~Attributes[i].Value; | |
3706 | else | |
3707 | *Attribute_Pointer |= | |
3708 | Attributes[i].Value; | |
3709 | /* | |
3710 | * Done | |
3711 | */ | |
3712 | break; | |
3713 | } | |
3714 | } | |
3715 | /* | |
3716 | * Now skip the attribute | |
3717 | */ | |
3718 | Name = cp; | |
3719 | if (*Name == '_') | |
3720 | Name++; | |
3721 | } | |
be9618de KR |
3722 | } |
3723 | \f | |
3724 | ||
8e86815b KR |
3725 | #define GBLSYM_REF 0 |
3726 | #define GBLSYM_DEF 1 | |
3727 | #define GBLSYM_VAL 2 | |
d5263ab4 | 3728 | #define GBLSYM_LCL 4 /* not GBL after all... */ |
8e86815b | 3729 | |
be9618de | 3730 | /* |
d5263ab4 | 3731 | * Define a global symbol (or possibly a local one). |
be9618de | 3732 | */ |
8e86815b KR |
3733 | static void |
3734 | VMS_Global_Symbol_Spec (Name, Psect_Number, Psect_Offset, Flags) | |
4b18b7cd | 3735 | const char *Name; |
be9618de KR |
3736 | int Psect_Number; |
3737 | int Psect_Offset; | |
8e86815b | 3738 | int Flags; |
be9618de KR |
3739 | { |
3740 | char Local[32]; | |
3741 | ||
3742 | /* | |
3743 | * We are writing a GSD record | |
3744 | */ | |
3745 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3746 | /* | |
3747 | * If the buffer is empty we must insert the GSD record type | |
3748 | */ | |
3749 | if (Object_Record_Offset == 0) | |
3750 | PUT_CHAR (OBJ_S_C_GSD); | |
3751 | /* | |
d5263ab4 | 3752 | * We are writing a Global (or local) symbol definition subrecord. |
be9618de | 3753 | */ |
d5263ab4 KR |
3754 | PUT_CHAR ((Flags & GBLSYM_LCL) != 0 ? GSD_S_C_LSY : |
3755 | ((unsigned) Psect_Number <= 255) ? GSD_S_C_SYM : GSD_S_C_SYMW); | |
be9618de KR |
3756 | /* |
3757 | * Data type is undefined | |
3758 | */ | |
3759 | PUT_CHAR (0); | |
3760 | /* | |
3761 | * Switch on Definition/Reference | |
3762 | */ | |
8e86815b | 3763 | if ((Flags & GBLSYM_DEF) == 0) |
be9618de KR |
3764 | { |
3765 | /* | |
8e86815b | 3766 | * Reference |
be9618de | 3767 | */ |
8e86815b | 3768 | PUT_SHORT (((Flags & GBLSYM_VAL) == 0) ? GSY_S_M_REL : 0); |
d5263ab4 KR |
3769 | if ((Flags & GBLSYM_LCL) != 0) /* local symbols have extra field */ |
3770 | PUT_SHORT (Current_Environment); | |
8e86815b KR |
3771 | } |
3772 | else | |
3773 | { | |
3774 | /* | |
3775 | * Definition | |
d5263ab4 | 3776 | *[ assert (LSY_S_M_DEF == GSY_S_M_DEF && LSY_S_M_REL == GSY_S_M_REL); ] |
8e86815b KR |
3777 | */ |
3778 | PUT_SHORT (((Flags & GBLSYM_VAL) == 0) ? | |
3779 | GSY_S_M_DEF | GSY_S_M_REL : GSY_S_M_DEF); | |
d5263ab4 KR |
3780 | if ((Flags & GBLSYM_LCL) != 0) /* local symbols have extra field */ |
3781 | PUT_SHORT (Current_Environment); | |
be9618de KR |
3782 | /* |
3783 | * Psect Number | |
3784 | */ | |
d5263ab4 | 3785 | if ((Flags & GBLSYM_LCL) == 0 && (unsigned) Psect_Number <= 255) |
3c650d09 | 3786 | PUT_CHAR (Psect_Number); |
be9618de | 3787 | else |
3c650d09 | 3788 | PUT_SHORT (Psect_Number); |
be9618de KR |
3789 | /* |
3790 | * Offset | |
3791 | */ | |
3792 | PUT_LONG (Psect_Offset); | |
3793 | } | |
be9618de KR |
3794 | /* |
3795 | * Finally, the global symbol name | |
3796 | */ | |
3797 | VMS_Case_Hack_Symbol (Name, Local); | |
3798 | PUT_COUNTED_STRING (Local); | |
3799 | /* | |
3800 | * Flush the buffer if it is more than 75% full | |
3801 | */ | |
d5263ab4 KR |
3802 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
3803 | Flush_VMS_Object_Record_Buffer (); | |
3804 | } | |
3805 | ||
3806 | /* | |
3807 | * Define an environment to support local symbol references. | |
3808 | * This is just to mollify the linker; we don't actually do | |
3809 | * anything useful with it. | |
3810 | */ | |
3811 | static void | |
3812 | VMS_Local_Environment_Setup (Env_Name) | |
3813 | const char *Env_Name; | |
3814 | { | |
3815 | /* We are writing a GSD record. */ | |
3816 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3817 | /* If the buffer is empty we must insert the GSD record type. */ | |
3818 | if (Object_Record_Offset == 0) | |
3819 | PUT_CHAR (OBJ_S_C_GSD); | |
3820 | /* We are writing an ENV subrecord. */ | |
3821 | PUT_CHAR (GSD_S_C_ENV); | |
3822 | ||
3823 | ++Current_Environment; /* index of environment being defined */ | |
3824 | ||
3825 | /* ENV$W_FLAGS: we are defining the next environment. It's not nested. */ | |
3826 | PUT_SHORT (ENV_S_M_DEF); | |
3827 | /* ENV$W_ENVINDX: index is always 0 for non-nested definitions. */ | |
3828 | PUT_SHORT (0); | |
3829 | ||
3830 | /* ENV$B_NAMLNG + ENV$T_NAME: environment name in ASCIC format. */ | |
3831 | if (!Env_Name) Env_Name = ""; | |
3832 | PUT_COUNTED_STRING ((char *)Env_Name); | |
3833 | ||
3834 | /* Flush the buffer if it is more than 75% full. */ | |
3835 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) | |
be9618de KR |
3836 | Flush_VMS_Object_Record_Buffer (); |
3837 | } | |
3838 | \f | |
3839 | ||
3840 | /* | |
3841 | * Define a psect | |
3842 | */ | |
3843 | static int | |
3844 | VMS_Psect_Spec (Name, Size, Type, vsp) | |
4b18b7cd | 3845 | const char *Name; |
be9618de | 3846 | int Size; |
5700b874 | 3847 | enum ps_type Type; |
be9618de KR |
3848 | struct VMS_Symbol *vsp; |
3849 | { | |
3850 | char Local[32]; | |
3851 | int Psect_Attributes; | |
3852 | ||
3853 | /* | |
3854 | * Generate the appropriate PSECT flags given the PSECT type | |
3855 | */ | |
5700b874 | 3856 | switch (Type) |
be9618de | 3857 | { |
5700b874 KR |
3858 | case ps_TEXT: |
3859 | /* Text psects are PIC,noOVR,REL,noGBL,SHR,EXE,RD,noWRT. */ | |
3860 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_SHR|GPS_S_M_EXE | |
3861 | |GPS_S_M_RD); | |
3862 | break; | |
3863 | case ps_DATA: | |
3864 | /* Data psects are PIC,noOVR,REL,noGBL,noSHR,noEXE,RD,WRT. */ | |
3865 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_REL|GPS_S_M_RD|GPS_S_M_WRT); | |
3866 | break; | |
3867 | case ps_COMMON: | |
3868 | /* Common block psects are: PIC,OVR,REL,GBL,SHR,noEXE,RD,WRT. */ | |
3869 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL | |
3870 | |GPS_S_M_SHR|GPS_S_M_RD|GPS_S_M_WRT); | |
3871 | break; | |
3872 | case ps_CONST: | |
3873 | /* Const data psects are: PIC,OVR,REL,GBL,SHR,noEXE,RD,noWRT. */ | |
3874 | Psect_Attributes = (GPS_S_M_PIC|GPS_S_M_OVR|GPS_S_M_REL|GPS_S_M_GBL | |
3875 | |GPS_S_M_SHR|GPS_S_M_RD); | |
3876 | break; | |
3877 | default: | |
3878 | /* impossible */ | |
3879 | error ("Unknown VMS psect type (%ld)", (long) Type); | |
3880 | break; | |
be9618de KR |
3881 | } |
3882 | /* | |
3883 | * Modify the psect attributes according to any attribute string | |
3884 | */ | |
d5263ab4 KR |
3885 | if (vsp && S_GET_TYPE (vsp->Symbol) == N_ABS) |
3886 | Psect_Attributes |= GLOBALVALUE_BIT; | |
3887 | else if (HAS_PSECT_ATTRIBUTES (Name)) | |
be9618de KR |
3888 | VMS_Modify_Psect_Attributes (Name, &Psect_Attributes); |
3889 | /* | |
3890 | * Check for globalref/def/val. | |
3891 | */ | |
3892 | if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) | |
3893 | { | |
3894 | /* | |
3895 | * globalvalue symbols were generated before. This code | |
3896 | * prevents unsightly psect buildup, and makes sure that | |
3897 | * fixup references are emitted correctly. | |
3898 | */ | |
3899 | vsp->Psect_Index = -1; /* to catch errors */ | |
8e86815b | 3900 | S_SET_TYPE (vsp->Symbol, N_UNDF); /* make refs work */ |
be9618de | 3901 | return 1; /* decrement psect counter */ |
c06e55d9 | 3902 | } |
be9618de KR |
3903 | |
3904 | if ((Psect_Attributes & GLOBALSYMBOL_BIT) != 0) | |
3905 | { | |
3906 | switch (S_GET_RAW_TYPE (vsp->Symbol)) | |
3907 | { | |
3908 | case N_UNDF | N_EXT: | |
3909 | VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, | |
8e86815b | 3910 | vsp->Psect_Offset, GBLSYM_REF); |
be9618de | 3911 | vsp->Psect_Index = -1; |
8e86815b | 3912 | S_SET_TYPE (vsp->Symbol, N_UNDF); |
be9618de KR |
3913 | return 1; /* return and indicate no psect */ |
3914 | case N_DATA | N_EXT: | |
3915 | VMS_Global_Symbol_Spec (Name, vsp->Psect_Index, | |
8e86815b | 3916 | vsp->Psect_Offset, GBLSYM_DEF); |
be9618de KR |
3917 | /* In this case we still generate the psect */ |
3918 | break; | |
3919 | default: | |
703139a8 KR |
3920 | as_fatal ("Globalsymbol attribute for symbol %s was unexpected.", |
3921 | Name); | |
3922 | break; | |
c06e55d9 KR |
3923 | } /* switch */ |
3924 | } | |
be9618de KR |
3925 | |
3926 | Psect_Attributes &= 0xffff; /* clear out the globalref/def stuff */ | |
3927 | /* | |
3928 | * We are writing a GSD record | |
3929 | */ | |
3930 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
3931 | /* | |
3932 | * If the buffer is empty we must insert the GSD record type | |
3933 | */ | |
3934 | if (Object_Record_Offset == 0) | |
3935 | PUT_CHAR (OBJ_S_C_GSD); | |
3936 | /* | |
3937 | * We are writing a PSECT definition subrecord | |
3938 | */ | |
3939 | PUT_CHAR (GSD_S_C_PSC); | |
3940 | /* | |
3941 | * Psects are always LONGWORD aligned | |
3942 | */ | |
3943 | PUT_CHAR (2); | |
3944 | /* | |
3945 | * Specify the psect attributes | |
3946 | */ | |
3947 | PUT_SHORT (Psect_Attributes); | |
3948 | /* | |
3949 | * Specify the allocation | |
3950 | */ | |
3951 | PUT_LONG (Size); | |
3952 | /* | |
3953 | * Finally, the psect name | |
3954 | */ | |
3955 | VMS_Case_Hack_Symbol (Name, Local); | |
3956 | PUT_COUNTED_STRING (Local); | |
3957 | /* | |
3958 | * Flush the buffer if it is more than 75% full | |
3959 | */ | |
3c650d09 | 3960 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
3961 | Flush_VMS_Object_Record_Buffer (); |
3962 | return 0; | |
3963 | } | |
3964 | \f | |
3965 | ||
3966 | /* | |
3967 | * Given the pointer to a symbol we calculate how big the data at the | |
3968 | * symbol is. We do this by looking for the next symbol (local or | |
3969 | * global) which will indicate the start of another datum. | |
3970 | */ | |
3971 | static int | |
3972 | VMS_Initialized_Data_Size (sp, End_Of_Data) | |
4b18b7cd | 3973 | register symbolS *sp; |
be9618de KR |
3974 | int End_Of_Data; |
3975 | { | |
4b18b7cd | 3976 | symbolS *sp1, *Next_Symbol; |
abf434d8 | 3977 | /* Cache values to avoid extra lookups. */ |
8e86815b | 3978 | valueT sp_val = S_GET_VALUE (sp), sp1_val, next_val = 0; |
be9618de KR |
3979 | |
3980 | /* | |
3981 | * Find the next symbol | |
3982 | * it delimits this datum | |
3983 | */ | |
3984 | Next_Symbol = 0; | |
3985 | for (sp1 = symbol_rootP; sp1; sp1 = symbol_next (sp1)) | |
3986 | { | |
3987 | /* | |
3988 | * The data type must match | |
3989 | */ | |
3990 | if (S_GET_TYPE (sp1) != N_DATA) | |
3991 | continue; | |
abf434d8 KR |
3992 | |
3993 | sp1_val = S_GET_VALUE (sp1); | |
3994 | ||
be9618de KR |
3995 | /* |
3996 | * The symbol must be AFTER this symbol | |
3997 | */ | |
abf434d8 | 3998 | if (sp1_val <= sp_val) |
be9618de KR |
3999 | continue; |
4000 | /* | |
4001 | * We ignore THIS symbol | |
4002 | */ | |
4003 | if (sp1 == sp) | |
4004 | continue; | |
4005 | /* | |
4006 | * If there is already a candidate selected for the | |
4007 | * next symbol, see if we are a better candidate | |
4008 | */ | |
4009 | if (Next_Symbol) | |
4010 | { | |
4011 | /* | |
4012 | * We are a better candidate if we are "closer" | |
4013 | * to the symbol | |
4014 | */ | |
abf434d8 | 4015 | if (sp1_val > next_val) |
be9618de | 4016 | continue; |
be9618de | 4017 | } |
abf434d8 KR |
4018 | /* |
4019 | * Make this the candidate | |
4020 | */ | |
4021 | Next_Symbol = sp1; | |
4022 | next_val = sp1_val; | |
be9618de KR |
4023 | } |
4024 | /* | |
4025 | * Calculate its size | |
4026 | */ | |
abf434d8 | 4027 | return Next_Symbol ? (next_val - sp_val) : (End_Of_Data - sp_val); |
be9618de KR |
4028 | } |
4029 | \f | |
4596bc7a | 4030 | |
be9618de KR |
4031 | /* |
4032 | * Check symbol names for the Psect hack with a globalvalue, and then | |
4033 | * generate globalvalues for those that have it. | |
4034 | */ | |
8e86815b | 4035 | static void |
be9618de KR |
4036 | VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment) |
4037 | unsigned text_siz; | |
4038 | unsigned data_siz; | |
4039 | char *Data_Segment; | |
4040 | { | |
4041 | register symbolS *sp; | |
4042 | char *stripped_name, *Name; | |
4043 | int Size; | |
4044 | int Psect_Attributes; | |
4045 | int globalvalue; | |
d5263ab4 | 4046 | int typ, abstyp; |
be9618de KR |
4047 | |
4048 | /* | |
4049 | * Scan the symbol table for globalvalues, and emit def/ref when | |
4050 | * required. These will be caught again later and converted to | |
4051 | * N_UNDF | |
4052 | */ | |
4053 | for (sp = symbol_rootP; sp; sp = sp->sy_next) | |
4054 | { | |
8e86815b | 4055 | typ = S_GET_RAW_TYPE (sp); |
d5263ab4 | 4056 | abstyp = ((typ & ~N_EXT) == N_ABS); |
be9618de KR |
4057 | /* |
4058 | * See if this is something we want to look at. | |
4059 | */ | |
d5263ab4 KR |
4060 | if (!abstyp && |
4061 | typ != (N_DATA | N_EXT) && | |
8e86815b | 4062 | typ != (N_UNDF | N_EXT)) |
be9618de KR |
4063 | continue; |
4064 | /* | |
4065 | * See if this has globalvalue specification. | |
4066 | */ | |
4067 | Name = S_GET_NAME (sp); | |
4068 | ||
d5263ab4 KR |
4069 | if (abstyp) |
4070 | { | |
4071 | stripped_name = 0; | |
4072 | Psect_Attributes = GLOBALVALUE_BIT; | |
4073 | } | |
4074 | else if (HAS_PSECT_ATTRIBUTES (Name)) | |
4075 | { | |
4076 | stripped_name = (char *) xmalloc (strlen (Name) + 1); | |
4077 | strcpy (stripped_name, Name); | |
4078 | Psect_Attributes = 0; | |
4079 | VMS_Modify_Psect_Attributes (stripped_name, &Psect_Attributes); | |
4080 | } | |
4081 | else | |
be9618de KR |
4082 | continue; |
4083 | ||
be9618de KR |
4084 | if ((Psect_Attributes & GLOBALVALUE_BIT) != 0) |
4085 | { | |
8e86815b | 4086 | switch (typ) |
be9618de | 4087 | { |
d5263ab4 KR |
4088 | case N_ABS: |
4089 | /* Local symbol references will want | |
4090 | to have an environment defined. */ | |
4091 | if (Current_Environment < 0) | |
4092 | VMS_Local_Environment_Setup (".N_ABS"); | |
4093 | VMS_Global_Symbol_Spec (Name, 0, | |
4094 | S_GET_VALUE(sp), | |
4095 | GBLSYM_DEF|GBLSYM_VAL|GBLSYM_LCL); | |
4096 | break; | |
4097 | case N_ABS | N_EXT: | |
4098 | VMS_Global_Symbol_Spec (Name, 0, | |
4099 | S_GET_VALUE(sp), | |
4100 | GBLSYM_DEF|GBLSYM_VAL); | |
4101 | break; | |
be9618de | 4102 | case N_UNDF | N_EXT: |
8e86815b | 4103 | VMS_Global_Symbol_Spec (stripped_name, 0, 0, GBLSYM_VAL); |
be9618de KR |
4104 | break; |
4105 | case N_DATA | N_EXT: | |
4106 | Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); | |
4107 | if (Size > 4) | |
4108 | error ("Invalid data type for globalvalue"); | |
494a6c05 KR |
4109 | globalvalue = md_chars_to_number (Data_Segment + |
4110 | S_GET_VALUE (sp) - text_siz , Size); | |
be9618de KR |
4111 | /* Three times for good luck. The linker seems to get confused |
4112 | if there are fewer than three */ | |
8e86815b KR |
4113 | VMS_Global_Symbol_Spec (stripped_name, 0, 0, GBLSYM_VAL); |
4114 | VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, | |
4115 | GBLSYM_DEF|GBLSYM_VAL); | |
4116 | VMS_Global_Symbol_Spec (stripped_name, 0, globalvalue, | |
4117 | GBLSYM_DEF|GBLSYM_VAL); | |
be9618de KR |
4118 | break; |
4119 | default: | |
3c650d09 | 4120 | as_warn ("Invalid globalvalue of %s", stripped_name); |
be9618de | 4121 | break; |
c06e55d9 KR |
4122 | } /* switch */ |
4123 | } /* if */ | |
8e86815b | 4124 | if (stripped_name) free (stripped_name); /* clean up */ |
c06e55d9 | 4125 | } /* for */ |
be9618de KR |
4126 | |
4127 | } | |
4128 | \f | |
4129 | ||
4130 | /* | |
4131 | * Define a procedure entry pt/mask | |
4132 | */ | |
8e86815b | 4133 | static void |
be9618de KR |
4134 | VMS_Procedure_Entry_Pt (Name, Psect_Number, Psect_Offset, Entry_Mask) |
4135 | char *Name; | |
4136 | int Psect_Number; | |
4137 | int Psect_Offset; | |
4138 | int Entry_Mask; | |
4139 | { | |
4140 | char Local[32]; | |
4141 | ||
4142 | /* | |
4143 | * We are writing a GSD record | |
4144 | */ | |
4145 | Set_VMS_Object_File_Record (OBJ_S_C_GSD); | |
4146 | /* | |
4147 | * If the buffer is empty we must insert the GSD record type | |
4148 | */ | |
4149 | if (Object_Record_Offset == 0) | |
4150 | PUT_CHAR (OBJ_S_C_GSD); | |
4151 | /* | |
4152 | * We are writing a Procedure Entry Pt/Mask subrecord | |
4153 | */ | |
b003a2d9 | 4154 | PUT_CHAR (((unsigned) Psect_Number <= 255) ? GSD_S_C_EPM : GSD_S_C_EPMW); |
be9618de KR |
4155 | /* |
4156 | * Data type is undefined | |
4157 | */ | |
4158 | PUT_CHAR (0); | |
4159 | /* | |
4160 | * Flags = "RELOCATABLE" and "DEFINED" | |
4161 | */ | |
4162 | PUT_SHORT (GSY_S_M_DEF | GSY_S_M_REL); | |
4163 | /* | |
4164 | * Psect Number | |
4165 | */ | |
b003a2d9 | 4166 | if ((unsigned) Psect_Number <= 255) |
3c650d09 | 4167 | PUT_CHAR (Psect_Number); |
be9618de | 4168 | else |
3c650d09 | 4169 | PUT_SHORT (Psect_Number); |
be9618de KR |
4170 | /* |
4171 | * Offset | |
4172 | */ | |
4173 | PUT_LONG (Psect_Offset); | |
4174 | /* | |
4175 | * Entry mask | |
4176 | */ | |
4177 | PUT_SHORT (Entry_Mask); | |
4178 | /* | |
4179 | * Finally, the global symbol name | |
4180 | */ | |
4181 | VMS_Case_Hack_Symbol (Name, Local); | |
4182 | PUT_COUNTED_STRING (Local); | |
4183 | /* | |
4184 | * Flush the buffer if it is more than 75% full | |
4185 | */ | |
3c650d09 | 4186 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
4187 | Flush_VMS_Object_Record_Buffer (); |
4188 | } | |
4189 | \f | |
4190 | ||
4191 | /* | |
4192 | * Set the current location counter to a particular Psect and Offset | |
4193 | */ | |
8e86815b | 4194 | static void |
be9618de KR |
4195 | VMS_Set_Psect (Psect_Index, Offset, Record_Type) |
4196 | int Psect_Index; | |
4197 | int Offset; | |
4198 | int Record_Type; | |
4199 | { | |
4200 | /* | |
4201 | * We are writing a "Record_Type" record | |
4202 | */ | |
4203 | Set_VMS_Object_File_Record (Record_Type); | |
4204 | /* | |
4205 | * If the buffer is empty we must insert the record type | |
4206 | */ | |
4207 | if (Object_Record_Offset == 0) | |
4208 | PUT_CHAR (Record_Type); | |
4209 | /* | |
b003a2d9 | 4210 | * Stack the Psect base + Offset |
be9618de | 4211 | */ |
b003a2d9 | 4212 | vms_tir_stack_psect (Psect_Index, Offset, 0); |
be9618de KR |
4213 | /* |
4214 | * Set relocation base | |
4215 | */ | |
4216 | PUT_CHAR (TIR_S_C_CTL_SETRB); | |
4217 | /* | |
4218 | * Flush the buffer if it is more than 75% full | |
4219 | */ | |
3c650d09 | 4220 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
4221 | Flush_VMS_Object_Record_Buffer (); |
4222 | } | |
4223 | \f | |
4224 | ||
4225 | /* | |
4226 | * Store repeated immediate data in current Psect | |
4227 | */ | |
8e86815b | 4228 | static void |
be9618de KR |
4229 | VMS_Store_Repeated_Data (Repeat_Count, Pointer, Size, Record_Type) |
4230 | int Repeat_Count; | |
4231 | register char *Pointer; | |
4232 | int Size; | |
4233 | int Record_Type; | |
4234 | { | |
4235 | ||
4236 | /* | |
4237 | * Ignore zero bytes/words/longwords | |
4238 | */ | |
703139a8 KR |
4239 | switch (Size) |
4240 | { | |
4241 | case 4: | |
58abad7d KR |
4242 | if (Pointer[3] != 0 || Pointer[2] != 0) break; |
4243 | /* else FALLTHRU */ | |
703139a8 | 4244 | case 2: |
58abad7d KR |
4245 | if (Pointer[1] != 0) break; |
4246 | /* else FALLTHRU */ | |
703139a8 | 4247 | case 1: |
58abad7d | 4248 | if (Pointer[0] != 0) break; |
703139a8 KR |
4249 | /* zero value */ |
4250 | return; | |
4251 | default: | |
703139a8 KR |
4252 | break; |
4253 | } | |
be9618de KR |
4254 | /* |
4255 | * If the data is too big for a TIR_S_C_STO_RIVB sub-record | |
4256 | * then we do it manually | |
4257 | */ | |
4258 | if (Size > 255) | |
4259 | { | |
4260 | while (--Repeat_Count >= 0) | |
4261 | VMS_Store_Immediate_Data (Pointer, Size, Record_Type); | |
4262 | return; | |
4263 | } | |
4264 | /* | |
4265 | * We are writing a "Record_Type" record | |
4266 | */ | |
4267 | Set_VMS_Object_File_Record (Record_Type); | |
4268 | /* | |
4269 | * If the buffer is empty we must insert record type | |
4270 | */ | |
4271 | if (Object_Record_Offset == 0) | |
4272 | PUT_CHAR (Record_Type); | |
4273 | /* | |
4274 | * Stack the repeat count | |
4275 | */ | |
4276 | PUT_CHAR (TIR_S_C_STA_LW); | |
4277 | PUT_LONG (Repeat_Count); | |
4278 | /* | |
4279 | * And now the command and its data | |
4280 | */ | |
4281 | PUT_CHAR (TIR_S_C_STO_RIVB); | |
4282 | PUT_CHAR (Size); | |
4283 | while (--Size >= 0) | |
4284 | PUT_CHAR (*Pointer++); | |
4285 | /* | |
4286 | * Flush the buffer if it is more than 75% full | |
4287 | */ | |
3c650d09 | 4288 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
4289 | Flush_VMS_Object_Record_Buffer (); |
4290 | } | |
4291 | \f | |
4292 | ||
4293 | /* | |
4294 | * Store a Position Independent Reference | |
4295 | */ | |
8e86815b | 4296 | static void |
be9618de KR |
4297 | VMS_Store_PIC_Symbol_Reference (Symbol, Offset, PC_Relative, |
4298 | Psect, Psect_Offset, Record_Type) | |
4b18b7cd | 4299 | symbolS *Symbol; |
be9618de KR |
4300 | int Offset; |
4301 | int PC_Relative; | |
4302 | int Psect; | |
4303 | int Psect_Offset; | |
4304 | int Record_Type; | |
4305 | { | |
703139a8 | 4306 | register struct VMS_Symbol *vsp = Symbol->sy_obj; |
be9618de | 4307 | char Local[32]; |
d5263ab4 | 4308 | int local_sym = 0; |
be9618de KR |
4309 | |
4310 | /* | |
4311 | * We are writing a "Record_Type" record | |
4312 | */ | |
4313 | Set_VMS_Object_File_Record (Record_Type); | |
4314 | /* | |
4315 | * If the buffer is empty we must insert record type | |
4316 | */ | |
4317 | if (Object_Record_Offset == 0) | |
4318 | PUT_CHAR (Record_Type); | |
4319 | /* | |
3c650d09 KR |
4320 | * Set to the appropriate offset in the Psect. |
4321 | * For a Code reference we need to fix the operand | |
4322 | * specifier as well, so back up 1 byte; | |
4323 | * for a Data reference we just store HERE. | |
be9618de | 4324 | */ |
3c650d09 KR |
4325 | VMS_Set_Psect (Psect, |
4326 | PC_Relative ? Psect_Offset - 1 : Psect_Offset, | |
4327 | Record_Type); | |
be9618de KR |
4328 | /* |
4329 | * Make sure we are still generating a "Record Type" record | |
4330 | */ | |
4331 | if (Object_Record_Offset == 0) | |
4332 | PUT_CHAR (Record_Type); | |
4333 | /* | |
4334 | * Dispatch on symbol type (so we can stack its value) | |
4335 | */ | |
4336 | switch (S_GET_RAW_TYPE (Symbol)) | |
4337 | { | |
4338 | /* | |
4339 | * Global symbol | |
4340 | */ | |
d5263ab4 KR |
4341 | case N_ABS: |
4342 | local_sym = 1; | |
4343 | /*FALLTHRU*/ | |
4344 | case N_ABS | N_EXT: | |
be9618de KR |
4345 | #ifdef NOT_VAX_11_C_COMPATIBLE |
4346 | case N_UNDF | N_EXT: | |
4347 | case N_DATA | N_EXT: | |
4348 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4349 | case N_UNDF: | |
4350 | case N_TEXT | N_EXT: | |
4351 | /* | |
4352 | * Get the symbol name (case hacked) | |
4353 | */ | |
4354 | VMS_Case_Hack_Symbol (S_GET_NAME (Symbol), Local); | |
4355 | /* | |
4356 | * Stack the global symbol value | |
4357 | */ | |
d5263ab4 KR |
4358 | if (!local_sym) |
4359 | { | |
4360 | PUT_CHAR (TIR_S_C_STA_GBL); | |
4361 | } | |
4362 | else | |
4363 | { | |
4364 | /* Local symbols have an extra field. */ | |
4365 | PUT_CHAR (TIR_S_C_STA_LSY); | |
4366 | PUT_SHORT (Current_Environment); | |
4367 | } | |
be9618de KR |
4368 | PUT_COUNTED_STRING (Local); |
4369 | if (Offset) | |
4370 | { | |
4371 | /* | |
4372 | * Stack the longword offset | |
4373 | */ | |
4374 | PUT_CHAR (TIR_S_C_STA_LW); | |
4375 | PUT_LONG (Offset); | |
4376 | /* | |
4377 | * Add the two, leaving the result on the stack | |
4378 | */ | |
4379 | PUT_CHAR (TIR_S_C_OPR_ADD); | |
4380 | } | |
4381 | break; | |
4382 | /* | |
4383 | * Uninitialized local data | |
4384 | */ | |
4385 | case N_BSS: | |
4386 | /* | |
4387 | * Stack the Psect (+offset) | |
4388 | */ | |
b003a2d9 KR |
4389 | vms_tir_stack_psect (vsp->Psect_Index, |
4390 | vsp->Psect_Offset + Offset, | |
4391 | 0); | |
be9618de KR |
4392 | break; |
4393 | /* | |
4394 | * Local text | |
4395 | */ | |
4396 | case N_TEXT: | |
4397 | /* | |
4398 | * Stack the Psect (+offset) | |
4399 | */ | |
b003a2d9 KR |
4400 | vms_tir_stack_psect (vsp->Psect_Index, |
4401 | S_GET_VALUE (Symbol) + Offset, | |
4402 | 0); | |
be9618de KR |
4403 | break; |
4404 | /* | |
4405 | * Initialized local or global data | |
4406 | */ | |
4407 | case N_DATA: | |
4408 | #ifndef NOT_VAX_11_C_COMPATIBLE | |
4409 | case N_UNDF | N_EXT: | |
4410 | case N_DATA | N_EXT: | |
4411 | #endif /* NOT_VAX_11_C_COMPATIBLE */ | |
4412 | /* | |
4413 | * Stack the Psect (+offset) | |
4414 | */ | |
b003a2d9 KR |
4415 | vms_tir_stack_psect (vsp->Psect_Index, |
4416 | vsp->Psect_Offset + Offset, | |
4417 | 0); | |
be9618de KR |
4418 | break; |
4419 | } | |
4420 | /* | |
4421 | * Store either a code or data reference | |
4422 | */ | |
4423 | PUT_CHAR (PC_Relative ? TIR_S_C_STO_PICR : TIR_S_C_STO_PIDR); | |
4424 | /* | |
4425 | * Flush the buffer if it is more than 75% full | |
4426 | */ | |
3c650d09 | 4427 | if (Object_Record_Offset > (sizeof (Object_Record_Buffer) * 3 / 4)) |
be9618de KR |
4428 | Flush_VMS_Object_Record_Buffer (); |
4429 | } | |
4430 | \f | |
4431 | ||
4432 | /* | |
4433 | * Check in the text area for an indirect pc-relative reference | |
4434 | * and fix it up with addressing mode 0xff [PC indirect] | |
4435 | * | |
4436 | * THIS SHOULD BE REPLACED BY THE USE OF TIR_S_C_STO_PIRR IN THE | |
4437 | * PIC CODE GENERATING FIXUP ROUTINE. | |
4438 | */ | |
8e86815b | 4439 | static void |
be9618de KR |
4440 | VMS_Fix_Indirect_Reference (Text_Psect, Offset, fragP, text_frag_root) |
4441 | int Text_Psect; | |
4442 | int Offset; | |
4443 | register fragS *fragP; | |
4b18b7cd | 4444 | fragS *text_frag_root; |
be9618de KR |
4445 | { |
4446 | /* | |
4447 | * The addressing mode byte is 1 byte before the address | |
4448 | */ | |
4449 | Offset--; | |
4450 | /* | |
4451 | * Is it in THIS frag?? | |
4452 | */ | |
4453 | if ((Offset < fragP->fr_address) || | |
4454 | (Offset >= (fragP->fr_address + fragP->fr_fix))) | |
4455 | { | |
4456 | /* | |
4457 | * We need to search for the fragment containing this | |
4458 | * Offset | |
4459 | */ | |
4460 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
4461 | { | |
4462 | if ((Offset >= fragP->fr_address) && | |
4463 | (Offset < (fragP->fr_address + fragP->fr_fix))) | |
4464 | break; | |
4465 | } | |
4466 | /* | |
4467 | * If we couldn't find the frag, things are BAD!! | |
4468 | */ | |
4469 | if (fragP == 0) | |
4470 | error ("Couldn't find fixup fragment when checking for indirect reference"); | |
4471 | } | |
4472 | /* | |
4473 | * Check for indirect PC relative addressing mode | |
4474 | */ | |
4475 | if (fragP->fr_literal[Offset - fragP->fr_address] == (char) 0xff) | |
4476 | { | |
3c650d09 | 4477 | static char Address_Mode = (char) 0xff; |
be9618de KR |
4478 | |
4479 | /* | |
4480 | * Yes: Store the indirect mode back into the image | |
4481 | * to fix up the damage done by STO_PICR | |
4482 | */ | |
4483 | VMS_Set_Psect (Text_Psect, Offset, OBJ_S_C_TIR); | |
4484 | VMS_Store_Immediate_Data (&Address_Mode, 1, OBJ_S_C_TIR); | |
4485 | } | |
4486 | } | |
4487 | \f | |
4596bc7a | 4488 | |
be9618de KR |
4489 | /* |
4490 | * If the procedure "main()" exists we have to add the instruction | |
4491 | * "jsb c$main_args" at the beginning to be compatible with VAX-11 "C". | |
3c650d09 KR |
4492 | * |
4493 | * FIXME: the macro name `HACK_DEC_C_STARTUP' should be renamed | |
4494 | * to `HACK_VAXCRTL_STARTUP' because Digital's compiler | |
4495 | * named "DEC C" uses run-time library "DECC$SHR", but this | |
4496 | * startup code is for "VAXCRTL", the library for Digital's | |
4497 | * older "VAX C". Also, this extra code isn't needed for | |
4498 | * supporting gcc because it already generates the VAXCRTL | |
4499 | * startup call when compiling main(). The reference to | |
4500 | * `flag_hash_long_names' looks very suspicious too; | |
4501 | * probably an old-style command line option was inadvertently | |
4502 | * overloaded here, then blindly converted into the new one. | |
be9618de | 4503 | */ |
8e86815b KR |
4504 | void |
4505 | vms_check_for_main () | |
be9618de KR |
4506 | { |
4507 | register symbolS *symbolP; | |
4508 | #ifdef HACK_DEC_C_STARTUP /* JF */ | |
4509 | register struct frchain *frchainP; | |
4510 | register fragS *fragP; | |
4511 | register fragS **prev_fragPP; | |
4512 | register struct fix *fixP; | |
4513 | register fragS *New_Frag; | |
4514 | int i; | |
4515 | #endif /* HACK_DEC_C_STARTUP */ | |
4516 | ||
4b18b7cd | 4517 | symbolP = (symbolS *) symbol_find ("_main"); |
be9618de KR |
4518 | if (symbolP && !S_IS_DEBUG (symbolP) && |
4519 | S_IS_EXTERNAL (symbolP) && (S_GET_TYPE (symbolP) == N_TEXT)) | |
4520 | { | |
4521 | #ifdef HACK_DEC_C_STARTUP | |
def66e24 | 4522 | if (!flag_hash_long_names) |
be9618de KR |
4523 | { |
4524 | #endif | |
4525 | /* | |
4526 | * Remember the entry point symbol | |
4527 | */ | |
4528 | Entry_Point_Symbol = symbolP; | |
4529 | #ifdef HACK_DEC_C_STARTUP | |
4530 | } | |
4531 | else | |
4532 | { | |
4533 | /* | |
4534 | * Scan all the fragment chains for the one with "_main" | |
4535 | * (Actually we know the fragment from the symbol, but we need | |
4536 | * the previous fragment so we can change its pointer) | |
4537 | */ | |
4538 | frchainP = frchain_root; | |
4539 | while (frchainP) | |
4540 | { | |
4541 | /* | |
4542 | * Scan all the fragments in this chain, remembering | |
4543 | * the "previous fragment" | |
4544 | */ | |
4545 | prev_fragPP = &frchainP->frch_root; | |
4546 | fragP = frchainP->frch_root; | |
4547 | while (fragP && (fragP != frchainP->frch_last)) | |
4548 | { | |
4549 | /* | |
4550 | * Is this the fragment? | |
4551 | */ | |
4552 | if (fragP == symbolP->sy_frag) | |
4553 | { | |
4554 | /* | |
4555 | * Yes: Modify the fragment by replacing | |
4556 | * it with a new fragment. | |
4557 | */ | |
4558 | New_Frag = (fragS *) | |
4559 | xmalloc (sizeof (*New_Frag) + | |
4560 | fragP->fr_fix + | |
4561 | fragP->fr_var + | |
4562 | 5); | |
4563 | /* | |
4564 | * The fragments are the same except | |
4565 | * that the "fixed" area is larger | |
4566 | */ | |
4567 | *New_Frag = *fragP; | |
4568 | New_Frag->fr_fix += 6; | |
4569 | /* | |
4570 | * Copy the literal data opening a hole | |
4571 | * 2 bytes after "_main" (i.e. just after | |
4572 | * the entry mask). Into which we place | |
4573 | * the JSB instruction. | |
4574 | */ | |
4575 | New_Frag->fr_literal[0] = fragP->fr_literal[0]; | |
4576 | New_Frag->fr_literal[1] = fragP->fr_literal[1]; | |
4577 | New_Frag->fr_literal[2] = 0x16; /* Jsb */ | |
4578 | New_Frag->fr_literal[3] = 0xef; | |
4579 | New_Frag->fr_literal[4] = 0; | |
4580 | New_Frag->fr_literal[5] = 0; | |
4581 | New_Frag->fr_literal[6] = 0; | |
4582 | New_Frag->fr_literal[7] = 0; | |
4583 | for (i = 2; i < fragP->fr_fix + fragP->fr_var; i++) | |
4584 | New_Frag->fr_literal[i + 6] = | |
4585 | fragP->fr_literal[i]; | |
4586 | /* | |
4587 | * Now replace the old fragment with the | |
4588 | * newly generated one. | |
4589 | */ | |
4590 | *prev_fragPP = New_Frag; | |
4591 | /* | |
4592 | * Remember the entry point symbol | |
4593 | */ | |
4594 | Entry_Point_Symbol = symbolP; | |
4595 | /* | |
4596 | * Scan the text area fixup structures | |
4597 | * as offsets in the fragment may have | |
4598 | * changed | |
4599 | */ | |
4600 | for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) | |
4601 | { | |
4602 | /* | |
4603 | * Look for references to this | |
4604 | * fragment. | |
4605 | */ | |
4606 | if (fixP->fx_frag == fragP) | |
4607 | { | |
4608 | /* | |
4609 | * Change the fragment | |
4610 | * pointer | |
4611 | */ | |
4612 | fixP->fx_frag = New_Frag; | |
4613 | /* | |
4614 | * If the offset is after | |
4615 | * the entry mask we need | |
4616 | * to account for the JSB | |
4617 | * instruction we just | |
4618 | * inserted. | |
4619 | */ | |
4620 | if (fixP->fx_where >= 2) | |
4621 | fixP->fx_where += 6; | |
4622 | } | |
4623 | } | |
4624 | /* | |
4625 | * Scan the symbols as offsets in the | |
4626 | * fragment may have changed | |
4627 | */ | |
4628 | for (symbolP = symbol_rootP; | |
4629 | symbolP; | |
4630 | symbolP = symbol_next (symbolP)) | |
4631 | { | |
4632 | /* | |
4633 | * Look for references to this | |
4634 | * fragment. | |
4635 | */ | |
4636 | if (symbolP->sy_frag == fragP) | |
4637 | { | |
4638 | /* | |
4639 | * Change the fragment | |
4640 | * pointer | |
4641 | */ | |
4642 | symbolP->sy_frag = New_Frag; | |
4643 | /* | |
4644 | * If the offset is after | |
4645 | * the entry mask we need | |
4646 | * to account for the JSB | |
4647 | * instruction we just | |
4648 | * inserted. | |
4649 | */ | |
4650 | if (S_GET_VALUE (symbolP) >= 2) | |
85051959 ILT |
4651 | S_SET_VALUE (symbolP, |
4652 | S_GET_VALUE (symbolP) + 6); | |
be9618de KR |
4653 | } |
4654 | } | |
4655 | /* | |
4656 | * Make a symbol reference to | |
4657 | * "_c$main_args" so we can get | |
4658 | * its address inserted into the | |
4659 | * JSB instruction. | |
4660 | */ | |
4661 | symbolP = (symbolS *) xmalloc (sizeof (*symbolP)); | |
a9918088 | 4662 | S_SET_NAME (symbolP, "_C$MAIN_ARGS"); |
be9618de | 4663 | S_SET_TYPE (symbolP, N_UNDF); |
a9918088 KR |
4664 | S_SET_OTHER (symbolP, 0); |
4665 | S_SET_DESC (symbolP, 0); | |
85051959 | 4666 | S_SET_VALUE (symbolP, 0); |
be9618de KR |
4667 | symbolP->sy_name_offset = 0; |
4668 | symbolP->sy_number = 0; | |
703139a8 | 4669 | symbolP->sy_obj = 0; |
be9618de | 4670 | symbolP->sy_frag = New_Frag; |
5868b1fe ILT |
4671 | symbolP->sy_resolved = 0; |
4672 | symbolP->sy_resolving = 0; | |
be9618de | 4673 | /* this actually inserts at the beginning of the list */ |
3c650d09 KR |
4674 | symbol_append (symbol_rootP, symbolP, |
4675 | &symbol_rootP, &symbol_lastP); | |
be9618de KR |
4676 | |
4677 | symbol_rootP = symbolP; | |
4678 | /* | |
4679 | * Generate a text fixup structure | |
4680 | * to get "_c$main_args" stored into the | |
4681 | * JSB instruction. | |
4682 | */ | |
4683 | fixP = (struct fix *) xmalloc (sizeof (*fixP)); | |
4684 | fixP->fx_frag = New_Frag; | |
4685 | fixP->fx_where = 4; | |
4686 | fixP->fx_addsy = symbolP; | |
4687 | fixP->fx_subsy = 0; | |
4688 | fixP->fx_offset = 0; | |
703139a8 | 4689 | fixP->fx_size = 4; |
be9618de KR |
4690 | fixP->fx_pcrel = 1; |
4691 | fixP->fx_next = text_fix_root; | |
4692 | text_fix_root = fixP; | |
4693 | /* | |
4694 | * Now make sure we exit from the loop | |
4695 | */ | |
4696 | frchainP = 0; | |
4697 | break; | |
4698 | } | |
4699 | /* | |
4700 | * Try the next fragment | |
4701 | */ | |
4702 | prev_fragPP = &fragP->fr_next; | |
4703 | fragP = fragP->fr_next; | |
4704 | } | |
4705 | /* | |
4706 | * Try the next fragment chain | |
4707 | */ | |
4708 | if (frchainP) | |
4709 | frchainP = frchainP->frch_next; | |
4710 | } | |
4711 | } | |
4712 | #endif /* HACK_DEC_C_STARTUP */ | |
4713 | } | |
4714 | } | |
4715 | \f | |
4b18b7cd | 4716 | |
0b415077 KR |
4717 | /* |
4718 | * Beginning of vms_write_object_file(). | |
4719 | */ | |
4720 | ||
4721 | static | |
4722 | struct vms_obj_state { | |
4723 | ||
4724 | /* Next program section index to use. */ | |
4725 | int psect_number; | |
4726 | ||
4727 | /* Psect index for code. Always ends up #0. */ | |
4728 | int text_psect; | |
4729 | ||
4730 | /* Psect index for initialized static variables. */ | |
4731 | int data_psect; | |
4732 | ||
4733 | /* Psect index for uninitialized static variables. */ | |
4734 | int bss_psect; | |
4735 | ||
4736 | /* Number of bytes used for local symbol data. */ | |
4737 | int local_initd_data_size; | |
4738 | ||
4739 | /* Dynamic buffer for initialized data. */ | |
4740 | char *data_segment; | |
4741 | ||
4742 | } vms_obj_state; | |
4743 | ||
4744 | #define Psect_Number vms_obj_state.psect_number | |
4745 | #define Text_Psect vms_obj_state.text_psect | |
4746 | #define Data_Psect vms_obj_state.data_psect | |
4747 | #define Bss_Psect vms_obj_state.bss_psect | |
4748 | #define Local_Initd_Data_Size vms_obj_state.local_initd_data_size | |
4749 | #define Data_Segment vms_obj_state.data_segment | |
4750 | ||
4751 | ||
4b18b7cd | 4752 | #define IS_GXX_VTABLE(symP) (strncmp (S_GET_NAME (symP), "__vt.", 5) == 0) |
0b415077 | 4753 | \f |
4b18b7cd | 4754 | |
be9618de | 4755 | /* |
0b415077 | 4756 | * Perform text segment fixups. |
be9618de | 4757 | */ |
0b415077 KR |
4758 | static void |
4759 | vms_fixup_text_section (text_siz, text_frag_root, data_frag_root) | |
be9618de | 4760 | unsigned text_siz; |
0b415077 KR |
4761 | struct frag *text_frag_root; |
4762 | struct frag *data_frag_root; | |
be9618de KR |
4763 | { |
4764 | register fragS *fragP; | |
be9618de | 4765 | register struct fix *fixP; |
0b415077 KR |
4766 | offsetT dif; |
4767 | ||
4768 | /* Scan the text fragments. */ | |
4769 | for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) | |
4770 | { | |
4771 | /* Stop if we get to the data fragments. */ | |
4772 | if (fragP == data_frag_root) | |
4773 | break; | |
4774 | /* Ignore fragments with no data. */ | |
4775 | if ((fragP->fr_fix == 0) && (fragP->fr_var == 0)) | |
4776 | continue; | |
4777 | /* Go the the appropriate offset in the Text Psect. */ | |
4778 | VMS_Set_Psect (Text_Psect, fragP->fr_address, OBJ_S_C_TIR); | |
4779 | /* Store the "fixed" part. */ | |
4780 | if (fragP->fr_fix) | |
4781 | VMS_Store_Immediate_Data (fragP->fr_literal, | |
4782 | fragP->fr_fix, | |
4783 | OBJ_S_C_TIR); | |
4784 | /* Store the "variable" part. */ | |
4785 | if (fragP->fr_var && fragP->fr_offset) | |
4786 | VMS_Store_Repeated_Data (fragP->fr_offset, | |
4787 | fragP->fr_literal + fragP->fr_fix, | |
4788 | fragP->fr_var, | |
4789 | OBJ_S_C_TIR); | |
4790 | } /* text frag loop */ | |
be9618de KR |
4791 | |
4792 | /* | |
0b415077 KR |
4793 | * Now we go through the text segment fixups and generate |
4794 | * TIR records to fix up addresses within the Text Psect. | |
be9618de | 4795 | */ |
0b415077 | 4796 | for (fixP = text_fix_root; fixP; fixP = fixP->fx_next) |
be9618de | 4797 | { |
0b415077 KR |
4798 | /* We DO handle the case of "Symbol - Symbol" as |
4799 | long as it is in the same segment. */ | |
4800 | if (fixP->fx_subsy && fixP->fx_addsy) | |
be9618de | 4801 | { |
0b415077 KR |
4802 | /* They need to be in the same segment. */ |
4803 | if (S_GET_RAW_TYPE (fixP->fx_subsy) != | |
4804 | S_GET_RAW_TYPE (fixP->fx_addsy)) | |
4805 | error ("Fixup data addsy and subsy don't have the same type"); | |
4806 | /* And they need to be in one that we can check the psect on. */ | |
4807 | if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && | |
4808 | (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) | |
4809 | error ("Fixup data addsy and subsy don't have an appropriate type"); | |
4810 | /* This had better not be PC relative! */ | |
4811 | if (fixP->fx_pcrel) | |
4812 | error ("Fixup data is erroneously \"pcrel\""); | |
4813 | /* Subtract their values to get the difference. */ | |
4814 | dif = S_GET_VALUE (fixP->fx_addsy) - S_GET_VALUE (fixP->fx_subsy); | |
4815 | md_number_to_chars (Local, (valueT)dif, fixP->fx_size); | |
4816 | /* Now generate the fixup object records; | |
4817 | set the psect and store the data. */ | |
4818 | VMS_Set_Psect (Text_Psect, | |
4819 | fixP->fx_where + fixP->fx_frag->fr_address, | |
4820 | OBJ_S_C_TIR); | |
4821 | VMS_Store_Immediate_Data (Local, | |
4822 | fixP->fx_size, | |
4823 | OBJ_S_C_TIR); | |
4824 | continue; /* done with this fixup */ | |
4825 | } /* if fx_subsy && fx_addsy */ | |
4826 | /* Size will HAVE to be "long". */ | |
4827 | if (fixP->fx_size != 4) | |
4828 | error ("Fixup datum is not a longword"); | |
4829 | /* Symbol must be "added" (if it is ever | |
4830 | subtracted we can fix this assumption). */ | |
4831 | if (fixP->fx_addsy == 0) | |
4832 | error ("Fixup datum is not \"fixP->fx_addsy\""); | |
4833 | /* Store the symbol value in a PIC fashion. */ | |
4834 | VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, | |
4835 | fixP->fx_offset, | |
4836 | fixP->fx_pcrel, | |
4837 | Text_Psect, | |
4838 | fixP->fx_where + fixP->fx_frag->fr_address, | |
4839 | OBJ_S_C_TIR); | |
4840 | /* | |
4841 | * Check for indirect address reference, which has to be fixed up | |
4842 | * (as the linker will screw it up with TIR_S_C_STO_PICR)... | |
4843 | */ | |
4844 | if (fixP->fx_pcrel) | |
4845 | VMS_Fix_Indirect_Reference (Text_Psect, | |
4846 | fixP->fx_where + fixP->fx_frag->fr_address, | |
4847 | fixP->fx_frag, | |
4848 | text_frag_root); | |
4849 | } /* text fix loop */ | |
4850 | } | |
4851 | \f | |
4852 | ||
4853 | /* | |
4854 | * Create a buffer holding the data segment. | |
4855 | */ | |
4856 | static void | |
4857 | synthesize_data_segment(data_siz, text_siz, data_frag_root) | |
4858 | unsigned data_siz, text_siz; | |
4859 | struct frag *data_frag_root; | |
4860 | { | |
4861 | register fragS *fragP; | |
4862 | char *fill_literal; | |
4863 | long fill_size, count, i; | |
4864 | ||
4865 | /* Allocate the data segment. */ | |
4866 | Data_Segment = (char *) xmalloc (data_siz); | |
4867 | /* Run through the data fragments, filling in the segment. */ | |
4868 | for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) | |
4869 | { | |
4870 | i = fragP->fr_address - text_siz; | |
4871 | if (fragP->fr_fix) | |
4872 | memcpy (Data_Segment + i, fragP->fr_literal, fragP->fr_fix); | |
4873 | i += fragP->fr_fix; | |
be9618de | 4874 | |
0b415077 KR |
4875 | if ((fill_size = fragP->fr_var) != 0) |
4876 | { | |
be9618de | 4877 | fill_literal = fragP->fr_literal + fragP->fr_fix; |
0b415077 KR |
4878 | for (count = fragP->fr_offset; count; count--) |
4879 | { | |
4880 | memcpy (Data_Segment + i, fill_literal, fill_size); | |
4881 | i += fill_size; | |
4882 | } | |
be9618de | 4883 | } |
0b415077 | 4884 | } /* data frag loop */ |
be9618de | 4885 | |
0b415077 KR |
4886 | return; |
4887 | } | |
be9618de | 4888 | |
0b415077 KR |
4889 | /* |
4890 | * Perform data segment fixups. | |
4891 | */ | |
4892 | static void | |
4893 | vms_fixup_data_section (data_siz, text_siz) | |
4894 | unsigned data_siz, text_siz; | |
4895 | { | |
4896 | register struct VMS_Symbol *vsp; | |
4897 | register struct fix *fixP; | |
4898 | register symbolS *sp; | |
4899 | addressT fr_address; | |
4900 | offsetT dif; | |
4901 | valueT val; | |
be9618de | 4902 | |
0b415077 KR |
4903 | /* Run through all the data symbols and store the data. */ |
4904 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
be9618de | 4905 | { |
0b415077 KR |
4906 | /* Ignore anything other than data symbols. */ |
4907 | if (S_GET_TYPE (vsp->Symbol) != N_DATA) | |
4908 | continue; | |
4909 | /* Set the Psect + Offset. */ | |
4910 | VMS_Set_Psect (vsp->Psect_Index, | |
4911 | vsp->Psect_Offset, | |
4912 | OBJ_S_C_TIR); | |
4913 | /* Store the data. */ | |
4914 | val = S_GET_VALUE (vsp->Symbol); | |
4915 | VMS_Store_Immediate_Data (Data_Segment + val - text_siz, | |
4916 | vsp->Size, | |
4917 | OBJ_S_C_TIR); | |
4918 | } /* N_DATA symbol loop */ | |
4919 | ||
4920 | /* | |
4921 | * Now we go through the data segment fixups and generate | |
4922 | * TIR records to fix up addresses within the Data Psects. | |
4923 | */ | |
4924 | for (fixP = data_fix_root; fixP; fixP = fixP->fx_next) | |
4925 | { | |
4926 | /* Find the symbol for the containing datum. */ | |
4927 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
4928 | { | |
4929 | /* Only bother with Data symbols. */ | |
4930 | sp = vsp->Symbol; | |
4931 | if (S_GET_TYPE (sp) != N_DATA) | |
4932 | continue; | |
4933 | /* Ignore symbol if After fixup. */ | |
4934 | val = S_GET_VALUE (sp); | |
4935 | fr_address = fixP->fx_frag->fr_address; | |
4936 | if (val > fixP->fx_where + fr_address) | |
4937 | continue; | |
4938 | /* See if the datum is here. */ | |
4939 | if (val + vsp->Size <= fixP->fx_where + fr_address) | |
4940 | continue; | |
4941 | /* We DO handle the case of "Symbol - Symbol" as | |
4942 | long as it is in the same segment. */ | |
4943 | if (fixP->fx_subsy && fixP->fx_addsy) | |
4944 | { | |
4945 | /* They need to be in the same segment. */ | |
4946 | if (S_GET_RAW_TYPE (fixP->fx_subsy) != | |
4947 | S_GET_RAW_TYPE (fixP->fx_addsy)) | |
4948 | error ("Fixup data addsy and subsy don't have the same type"); | |
4949 | /* And they need to be in one that we can check the psect on. */ | |
4950 | if ((S_GET_TYPE (fixP->fx_addsy) != N_DATA) && | |
4951 | (S_GET_TYPE (fixP->fx_addsy) != N_TEXT)) | |
4952 | error ("Fixup data addsy and subsy don't have an appropriate type"); | |
4953 | /* This had better not be PC relative! */ | |
4954 | if (fixP->fx_pcrel) | |
4955 | error ("Fixup data is erroneously \"pcrel\""); | |
4956 | /* Subtract their values to get the difference. */ | |
4957 | dif = S_GET_VALUE (fixP->fx_addsy) - S_GET_VALUE (fixP->fx_subsy); | |
4958 | md_number_to_chars (Local, (valueT)dif, fixP->fx_size); | |
4959 | /* | |
4960 | * Now generate the fixup object records; | |
4961 | * set the psect and store the data. | |
4962 | */ | |
4963 | VMS_Set_Psect (vsp->Psect_Index, | |
4964 | fr_address + fixP->fx_where | |
4965 | - val + vsp->Psect_Offset, | |
4966 | OBJ_S_C_TIR); | |
4967 | VMS_Store_Immediate_Data (Local, | |
4968 | fixP->fx_size, | |
4969 | OBJ_S_C_TIR); | |
4970 | break; /* done with this fixup */ | |
4971 | } | |
4972 | /* Size will HAVE to be "long". */ | |
4973 | if (fixP->fx_size != 4) | |
4974 | error ("Fixup datum is not a longword"); | |
4975 | /* Symbol must be "added" (if it is ever | |
4976 | subtracted we can fix this assumption). */ | |
4977 | if (fixP->fx_addsy == 0) | |
4978 | error ("Fixup datum is not \"fixP->fx_addsy\""); | |
4979 | /* Store the symbol value in a PIC fashion. */ | |
4980 | VMS_Store_PIC_Symbol_Reference (fixP->fx_addsy, | |
4981 | fixP->fx_offset, | |
4982 | fixP->fx_pcrel, | |
4983 | vsp->Psect_Index, | |
4984 | fr_address + fixP->fx_where | |
4985 | - val + vsp->Psect_Offset, | |
4986 | OBJ_S_C_TIR); | |
4987 | /* Done with this fixup. */ | |
4988 | break; | |
4989 | } /* vms_symbol loop */ | |
4990 | ||
4991 | } /* data fix loop */ | |
4992 | } | |
4993 | \f | |
4994 | ||
4995 | /* | |
4996 | * Define symbols for the linker. | |
4997 | */ | |
4998 | static void | |
4999 | global_symbol_directory (text_siz, data_siz) | |
5000 | unsigned text_siz, data_siz; | |
5001 | { | |
5002 | register fragS *fragP; | |
5003 | register symbolS *sp; | |
5004 | register struct VMS_Symbol *vsp; | |
5005 | int Globalref, define_as_global_symbol; | |
5006 | ||
be9618de | 5007 | #ifndef gxx_bug_fixed |
0b415077 | 5008 | /* |
be9618de KR |
5009 | * The g++ compiler does not write out external references to vtables |
5010 | * correctly. Check for this and holler if we see it happening. | |
5011 | * If that compiler bug is ever fixed we can remove this. | |
4b18b7cd | 5012 | * (Jun'95: gcc 2.7.0's cc1plus still exhibits this behavior.) |
be9618de | 5013 | */ |
0b415077 | 5014 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) |
4b18b7cd KR |
5015 | if (S_GET_RAW_TYPE (sp) == N_UNDF && IS_GXX_VTABLE (sp)) |
5016 | { | |
5017 | S_SET_TYPE (sp, N_UNDF | N_EXT); | |
5018 | S_SET_OTHER (sp, 1); | |
5019 | as_warn ("g++ wrote an extern reference to `%s' as a routine.\n%s", | |
5020 | S_GET_NAME (sp), | |
5021 | "I will fix it, but I hope that it was not really a routine."); | |
be9618de | 5022 | } |
be9618de | 5023 | #endif /* gxx_bug_fixed */ |
0b415077 | 5024 | |
be9618de | 5025 | /* |
0b415077 | 5026 | * Now scan the symbols and emit the appropriate GSD records |
be9618de KR |
5027 | */ |
5028 | for (sp = symbol_rootP; sp; sp = symbol_next (sp)) | |
5029 | { | |
0b415077 KR |
5030 | define_as_global_symbol = 0; |
5031 | /* Dispatch on symbol type. */ | |
be9618de KR |
5032 | switch (S_GET_RAW_TYPE (sp)) |
5033 | { | |
0b415077 KR |
5034 | |
5035 | /* Global uninitialized data. */ | |
be9618de | 5036 | case N_UNDF | N_EXT: |
0b415077 KR |
5037 | /* Make a VMS data symbol entry. */ |
5038 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
be9618de KR |
5039 | vsp->Symbol = sp; |
5040 | vsp->Size = S_GET_VALUE (sp); | |
5041 | vsp->Psect_Index = Psect_Number++; | |
5042 | vsp->Psect_Offset = 0; | |
5043 | vsp->Next = VMS_Symbols; | |
5044 | VMS_Symbols = vsp; | |
703139a8 | 5045 | sp->sy_obj = vsp; |
0b415077 | 5046 | /* Make the psect for this data. */ |
4b18b7cd KR |
5047 | Globalref = VMS_Psect_Spec (S_GET_NAME (sp), |
5048 | vsp->Size, | |
5700b874 | 5049 | S_GET_OTHER (sp) ? ps_CONST : ps_COMMON, |
4b18b7cd | 5050 | vsp); |
be9618de KR |
5051 | if (Globalref) |
5052 | Psect_Number--; | |
5053 | #ifdef NOT_VAX_11_C_COMPATIBLE | |
0b415077 KR |
5054 | define_as_global_symbol = 1; |
5055 | #else | |
5056 | /* See if this is an external vtable. We want to help the | |
5057 | linker find these things in libraries, so we make a symbol | |
5058 | reference. This is not compatible with VAX-C usage for | |
5059 | variables, but since vtables are only used internally by | |
5060 | g++, we can get away with this hack. */ | |
5061 | define_as_global_symbol = IS_GXX_VTABLE (sp); | |
5062 | #endif | |
be9618de | 5063 | break; |
0b415077 KR |
5064 | |
5065 | /* Local uninitialized data. */ | |
be9618de | 5066 | case N_BSS: |
0b415077 KR |
5067 | /* Make a VMS data symbol entry. */ |
5068 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
be9618de KR |
5069 | vsp->Symbol = sp; |
5070 | vsp->Size = 0; | |
5071 | vsp->Psect_Index = Bss_Psect; | |
b003a2d9 | 5072 | vsp->Psect_Offset = S_GET_VALUE (sp) - bss_address_frag.fr_address; |
be9618de KR |
5073 | vsp->Next = VMS_Symbols; |
5074 | VMS_Symbols = vsp; | |
703139a8 | 5075 | sp->sy_obj = vsp; |
be9618de | 5076 | break; |
0b415077 KR |
5077 | |
5078 | /* Global initialized data. */ | |
be9618de | 5079 | case N_DATA | N_EXT: |
0b415077 KR |
5080 | /* Make a VMS data symbol entry. */ |
5081 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
be9618de | 5082 | vsp->Symbol = sp; |
0509f064 | 5083 | vsp->Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); |
be9618de KR |
5084 | vsp->Psect_Index = Psect_Number++; |
5085 | vsp->Psect_Offset = 0; | |
5086 | vsp->Next = VMS_Symbols; | |
5087 | VMS_Symbols = vsp; | |
703139a8 | 5088 | sp->sy_obj = vsp; |
0b415077 | 5089 | /* Make its psect. */ |
703139a8 KR |
5090 | Globalref = VMS_Psect_Spec (S_GET_NAME (sp), |
5091 | vsp->Size, | |
5700b874 | 5092 | S_GET_OTHER (sp) ? ps_CONST : ps_COMMON, |
703139a8 | 5093 | vsp); |
be9618de KR |
5094 | if (Globalref) |
5095 | Psect_Number--; | |
5096 | #ifdef NOT_VAX_11_C_COMPATIBLE | |
0b415077 KR |
5097 | define_as_global_symbol = 1; |
5098 | #else | |
5099 | /* See N_UNDF|N_EXT above for explanation. */ | |
5100 | define_as_global_symbol = IS_GXX_VTABLE (sp); | |
5101 | #endif | |
be9618de | 5102 | break; |
0b415077 KR |
5103 | |
5104 | /* Local initialized data. */ | |
be9618de | 5105 | case N_DATA: |
58abad7d KR |
5106 | { |
5107 | char *sym_name = S_GET_NAME (sp); | |
5108 | ||
5109 | /* Always suppress local numeric labels. */ | |
d5263ab4 | 5110 | if (!sym_name || strcmp (sym_name, FAKE_LABEL_NAME) != 0) |
58abad7d | 5111 | { |
0b415077 KR |
5112 | /* Make a VMS data symbol entry. */ |
5113 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
58abad7d KR |
5114 | vsp->Symbol = sp; |
5115 | vsp->Size = VMS_Initialized_Data_Size (sp, text_siz + data_siz); | |
5116 | vsp->Psect_Index = Data_Psect; | |
0b415077 KR |
5117 | vsp->Psect_Offset = Local_Initd_Data_Size; |
5118 | Local_Initd_Data_Size += vsp->Size; | |
58abad7d KR |
5119 | vsp->Next = VMS_Symbols; |
5120 | VMS_Symbols = vsp; | |
5121 | sp->sy_obj = vsp; | |
5122 | } | |
5123 | } | |
be9618de | 5124 | break; |
0b415077 KR |
5125 | |
5126 | /* Global Text definition. */ | |
be9618de KR |
5127 | case N_TEXT | N_EXT: |
5128 | { | |
5129 | unsigned short Entry_Mask; | |
5130 | ||
0b415077 | 5131 | /* Get the entry mask. */ |
be9618de | 5132 | fragP = sp->sy_frag; |
4b18b7cd KR |
5133 | /* First frag might be empty if we're generating listings. |
5134 | So skip empty rs_fill frags. */ | |
5135 | while (fragP && fragP->fr_type == rs_fill && fragP->fr_fix == 0) | |
5136 | fragP = fragP->fr_next; | |
abf434d8 KR |
5137 | |
5138 | /* If first frag doesn't contain the data, what do we do? | |
5139 | If it's possibly smaller than two bytes, that would | |
5140 | imply that the entry mask is not stored where we're | |
5141 | expecting it. | |
5142 | ||
5143 | If you can find a test case that triggers this, report | |
5144 | it (and tell me what the entry mask field ought to be), | |
5145 | and I'll try to fix it. KR */ | |
5146 | if (fragP->fr_fix < 2) | |
5147 | abort (); | |
5148 | ||
0509f064 KR |
5149 | Entry_Mask = (fragP->fr_literal[0] & 0x00ff) | |
5150 | ((fragP->fr_literal[1] & 0x00ff) << 8); | |
0b415077 | 5151 | /* Define the procedure entry point. */ |
be9618de KR |
5152 | VMS_Procedure_Entry_Pt (S_GET_NAME (sp), |
5153 | Text_Psect, | |
5154 | S_GET_VALUE (sp), | |
5155 | Entry_Mask); | |
5156 | break; | |
5157 | } | |
0b415077 KR |
5158 | |
5159 | /* Local Text definition. */ | |
be9618de | 5160 | case N_TEXT: |
0b415077 | 5161 | /* Make a VMS data symbol entry. */ |
be9618de KR |
5162 | if (Text_Psect != -1) |
5163 | { | |
0b415077 | 5164 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); |
be9618de KR |
5165 | vsp->Symbol = sp; |
5166 | vsp->Size = 0; | |
5167 | vsp->Psect_Index = Text_Psect; | |
5168 | vsp->Psect_Offset = S_GET_VALUE (sp); | |
5169 | vsp->Next = VMS_Symbols; | |
5170 | VMS_Symbols = vsp; | |
703139a8 | 5171 | sp->sy_obj = vsp; |
be9618de KR |
5172 | } |
5173 | break; | |
0b415077 KR |
5174 | |
5175 | /* Global Reference. */ | |
be9618de | 5176 | case N_UNDF: |
0b415077 | 5177 | /* Make a GSD global symbol reference record. */ |
be9618de KR |
5178 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), |
5179 | 0, | |
5180 | 0, | |
8e86815b | 5181 | GBLSYM_REF); |
be9618de | 5182 | break; |
0b415077 KR |
5183 | |
5184 | /* Absolute symbol. */ | |
d5263ab4 KR |
5185 | case N_ABS: |
5186 | case N_ABS | N_EXT: | |
0b415077 KR |
5187 | /* gcc doesn't generate these; |
5188 | VMS_Emit_Globalvalue handles them though. */ | |
5189 | vsp = (struct VMS_Symbol *) xmalloc (sizeof *vsp); | |
d5263ab4 | 5190 | vsp->Symbol = sp; |
4b18b7cd | 5191 | vsp->Size = 4; /* always assume 32 bits */ |
d5263ab4 KR |
5192 | vsp->Psect_Index = 0; |
5193 | vsp->Psect_Offset = S_GET_VALUE (sp); | |
5194 | vsp->Next = VMS_Symbols; | |
5195 | VMS_Symbols = vsp; | |
5196 | sp->sy_obj = vsp; | |
5197 | break; | |
0b415077 KR |
5198 | |
5199 | /* Anything else. */ | |
be9618de | 5200 | default: |
0b415077 | 5201 | /* Ignore STAB symbols, including .stabs emitted by g++. */ |
be9618de KR |
5202 | if (S_IS_DEBUG (sp) || (S_GET_TYPE (sp) == 22)) |
5203 | break; | |
5204 | /* | |
4b18b7cd | 5205 | * Error otherwise. |
be9618de | 5206 | */ |
4b18b7cd | 5207 | as_tsktsk ("unhandled stab type %d", S_GET_TYPE (sp)); |
be9618de KR |
5208 | break; |
5209 | } | |
0b415077 KR |
5210 | |
5211 | /* Global symbols have different linkage than external variables. */ | |
5212 | if (define_as_global_symbol) | |
5213 | VMS_Global_Symbol_Spec (S_GET_NAME (sp), | |
5214 | vsp->Psect_Index, | |
5215 | 0, | |
5216 | GBLSYM_DEF); | |
5217 | } | |
5218 | ||
5219 | return; | |
5220 | } | |
5221 | \f | |
5222 | ||
5223 | /* | |
5224 | * Output debugger symbol table information for symbols which | |
5225 | * are local to a specific routine. | |
5226 | */ | |
5227 | static void | |
5228 | local_symbols_DST (s0P, Current_Routine) | |
5229 | symbolS *s0P, *Current_Routine; | |
5230 | { | |
5231 | symbolS *s1P; | |
5232 | char *s0P_name, *pnt0, *pnt1; | |
5233 | ||
5234 | s0P_name = S_GET_NAME (s0P); | |
5235 | if (*++s0P_name != '_') | |
5236 | return; | |
5237 | ||
5238 | for (s1P = Current_Routine; s1P; s1P = symbol_next (s1P)) | |
5239 | { | |
5240 | #if 0 /* redundant; RAW_TYPE != N_FUN suffices */ | |
5241 | if (!S_IS_DEBUG (s1P)) | |
5242 | continue; | |
5243 | #endif | |
5244 | if (S_GET_RAW_TYPE (s1P) != N_FUN) | |
5245 | continue; | |
5246 | pnt0 = s0P_name; | |
5247 | pnt1 = S_GET_NAME (s1P); | |
5248 | /* We assume the two strings are never exactly equal... */ | |
5249 | while (*pnt0++ == *pnt1++) | |
5250 | { | |
5251 | } | |
5252 | /* Found it if s0P name is exhausted and s1P name has ":F" or ":f" next. | |
5253 | Note: both pointers have advanced one past the non-matching char. */ | |
5254 | if ((*pnt1 == 'F' || *pnt1 == 'f') && *--pnt1 == ':' && *--pnt0 == '\0') | |
5255 | { | |
5256 | Define_Routine (s1P, 0, Current_Routine, Text_Psect); | |
5257 | return; | |
5258 | } | |
be9618de | 5259 | } |
0b415077 KR |
5260 | } |
5261 | ||
5262 | /* | |
5263 | * Construct and output the debug symbol table. | |
5264 | */ | |
5265 | static void | |
5266 | vms_build_DST (text_siz) | |
5267 | unsigned text_siz; | |
5268 | { | |
5269 | register symbolS *symbolP; | |
5270 | symbolS *Current_Routine = 0; | |
5271 | struct input_file *Cur_File = 0; | |
5272 | offsetT Cur_Offset = -1; | |
5273 | int Cur_Line_Number = 0; | |
5274 | int File_Number = 0; | |
5275 | int Debugger_Offset = 0; | |
5276 | int file_available; | |
5277 | int dsc; | |
5278 | offsetT val; | |
5279 | ||
be9618de | 5280 | /* |
0b415077 KR |
5281 | * Write the Traceback Begin Module record |
5282 | */ | |
5283 | VMS_TBT_Module_Begin (); | |
5284 | ||
5285 | /* | |
5286 | * Output debugging info for global variables and static variables | |
5287 | * that are not specific to one routine. We also need to examine | |
5288 | * all stabs directives, to find the definitions to all of the | |
5289 | * advanced data types, and this is done by VMS_LSYM_Parse. This | |
5290 | * needs to be done before any definitions are output to the object | |
5291 | * file, since there can be forward references in the stabs | |
5292 | * directives. When through with parsing, the text of the stabs | |
5293 | * directive is altered, with the definitions removed, so that later | |
5294 | * passes will see directives as they would be written if the type | |
5295 | * were already defined. | |
5296 | * | |
5297 | * We also look for files and include files, and make a list of | |
5298 | * them. We examine the source file numbers to establish the actual | |
5299 | * lines that code was generated from, and then generate offsets. | |
be9618de | 5300 | */ |
0b415077 KR |
5301 | VMS_LSYM_Parse (); |
5302 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) | |
be9618de | 5303 | { |
0b415077 KR |
5304 | /* Only deal with STAB symbols here. */ |
5305 | if (!S_IS_DEBUG (symbolP)) | |
5306 | continue; | |
be9618de | 5307 | /* |
0b415077 | 5308 | * Dispatch on STAB type. |
be9618de | 5309 | */ |
0b415077 | 5310 | switch (S_GET_RAW_TYPE (symbolP)) |
be9618de | 5311 | { |
0b415077 KR |
5312 | case N_SLINE: |
5313 | dsc = S_GET_DESC (symbolP); | |
5314 | if (dsc > Cur_File->max_line) | |
5315 | Cur_File->max_line = dsc; | |
5316 | if (dsc < Cur_File->min_line) | |
5317 | Cur_File->min_line = dsc; | |
5318 | break; | |
5319 | case N_SO: | |
5320 | Cur_File = find_file (symbolP); | |
5321 | Cur_File->flag = 1; | |
5322 | Cur_File->min_line = 1; | |
5323 | break; | |
5324 | case N_SOL: | |
5325 | Cur_File = find_file (symbolP); | |
5326 | break; | |
5327 | case N_GSYM: | |
5328 | VMS_GSYM_Parse (symbolP, Text_Psect); | |
5329 | break; | |
5330 | case N_LCSYM: | |
5331 | VMS_LCSYM_Parse (symbolP, Text_Psect); | |
5332 | break; | |
5333 | case N_FUN: /* For static constant symbols */ | |
5334 | case N_STSYM: | |
5335 | VMS_STSYM_Parse (symbolP, Text_Psect); | |
5336 | break; | |
5337 | default: | |
5338 | break; | |
5339 | } /* switch */ | |
5340 | } /* for */ | |
5341 | ||
5342 | /* | |
5343 | * Now we take a quick sweep through the files and assign offsets | |
5344 | * to each one. This will essentially be the starting line number to | |
5345 | * the debugger for each file. Output the info for the debugger to | |
5346 | * specify the files, and then tell it how many lines to use. | |
5347 | */ | |
5348 | for (Cur_File = file_root; Cur_File; Cur_File = Cur_File->next) | |
5349 | { | |
5350 | if (Cur_File->max_line == 0) | |
5351 | continue; | |
5352 | if ((strncmp (Cur_File->name, "GNU_GXX_INCLUDE:", 16) == 0) && | |
5353 | !flag_debug) | |
5354 | continue; | |
5355 | if ((strncmp (Cur_File->name, "GNU_CC_INCLUDE:", 15) == 0) && | |
5356 | !flag_debug) | |
5357 | continue; | |
5358 | /* show a few extra lines at the start of the region selected */ | |
5359 | if (Cur_File->min_line > 2) | |
5360 | Cur_File->min_line -= 2; | |
5361 | Cur_File->offset = Debugger_Offset - Cur_File->min_line + 1; | |
5362 | Debugger_Offset += Cur_File->max_line - Cur_File->min_line + 1; | |
5363 | if (Cur_File->same_file_fpnt) | |
5364 | { | |
5365 | Cur_File->file_number = Cur_File->same_file_fpnt->file_number; | |
5366 | } | |
5367 | else | |
5368 | { | |
5369 | Cur_File->file_number = ++File_Number; | |
5370 | file_available = VMS_TBT_Source_File (Cur_File->name, | |
5371 | Cur_File->file_number); | |
5372 | if (!file_available) | |
be9618de | 5373 | { |
0b415077 KR |
5374 | Cur_File->file_number = 0; |
5375 | File_Number--; | |
5376 | continue; | |
be9618de KR |
5377 | } |
5378 | } | |
0b415077 KR |
5379 | VMS_TBT_Source_Lines (Cur_File->file_number, |
5380 | Cur_File->min_line, | |
5381 | Cur_File->max_line - Cur_File->min_line + 1); | |
5382 | } /* for */ | |
5383 | Cur_File = (struct input_file *) NULL; | |
5384 | ||
be9618de | 5385 | /* |
0b415077 KR |
5386 | * Scan the symbols and write out the routines |
5387 | * (this makes the assumption that symbols are in | |
5388 | * order of ascending text segment offset) | |
be9618de | 5389 | */ |
0b415077 | 5390 | for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP)) |
be9618de KR |
5391 | { |
5392 | /* | |
0b415077 | 5393 | * Deal with text symbols. |
be9618de | 5394 | */ |
0b415077 | 5395 | if (!S_IS_DEBUG (symbolP) && S_GET_TYPE (symbolP) == N_TEXT) |
be9618de KR |
5396 | { |
5397 | /* | |
0b415077 | 5398 | * Ignore symbols starting with "L", as they are local symbols. |
be9618de | 5399 | */ |
0b415077 | 5400 | if (*S_GET_NAME (symbolP) == 'L') |
be9618de KR |
5401 | continue; |
5402 | /* | |
0b415077 | 5403 | * If there is a routine start defined, terminate it. |
be9618de | 5404 | */ |
0b415077 KR |
5405 | if (Current_Routine) |
5406 | VMS_TBT_Routine_End (text_siz, Current_Routine); | |
be9618de | 5407 | |
be9618de | 5408 | /* |
0b415077 KR |
5409 | * Check for & skip dummy labels like "gcc_compiled.". |
5410 | * They're identified by the IN_DEFAULT_SECTION flag. | |
be9618de | 5411 | */ |
0b415077 KR |
5412 | if ((S_GET_OTHER (symbolP) & IN_DEFAULT_SECTION) != 0 && |
5413 | S_GET_VALUE (symbolP) == 0) | |
5414 | continue; | |
be9618de | 5415 | /* |
0b415077 | 5416 | * Store the routine begin traceback info. |
be9618de | 5417 | */ |
0b415077 KR |
5418 | VMS_TBT_Routine_Begin (symbolP, Text_Psect); |
5419 | Current_Routine = symbolP; | |
be9618de | 5420 | /* |
0b415077 | 5421 | * Define symbols local to this routine. |
be9618de | 5422 | */ |
0b415077 | 5423 | local_symbols_DST (symbolP, Current_Routine); |
be9618de | 5424 | /* |
0b415077 | 5425 | * Done |
be9618de | 5426 | */ |
0b415077 | 5427 | continue; |
be9618de | 5428 | |
be9618de KR |
5429 | } |
5430 | /* | |
0b415077 | 5431 | * Deal with STAB symbols. |
be9618de | 5432 | */ |
0b415077 | 5433 | else if (S_IS_DEBUG (symbolP)) |
be9618de KR |
5434 | { |
5435 | /* | |
0b415077 | 5436 | * Dispatch on STAB type. |
be9618de | 5437 | */ |
0b415077 | 5438 | switch (S_GET_RAW_TYPE (symbolP)) |
be9618de | 5439 | { |
0b415077 KR |
5440 | /* |
5441 | * Line number | |
5442 | */ | |
5443 | case N_SLINE: | |
5444 | /* Offset the line into the correct portion of the file. */ | |
5445 | if (Cur_File->file_number == 0) | |
5446 | break; | |
5447 | val = S_GET_VALUE (symbolP); | |
5448 | /* Sometimes the same offset gets several source lines | |
5449 | assigned to it. We should be selective about which | |
5450 | lines we allow, we should prefer lines that are in | |
5451 | the main source file when debugging inline functions. */ | |
5452 | if (val == Cur_Offset && Cur_File->file_number != 1) | |
5453 | break; | |
5454 | ||
5455 | /* calculate actual debugger source line */ | |
5456 | dsc = S_GET_DESC (symbolP) + Cur_File->offset; | |
5457 | S_SET_DESC (symbolP, dsc); | |
be9618de | 5458 | /* |
0b415077 | 5459 | * Define PC/Line correlation. |
be9618de | 5460 | */ |
0b415077 | 5461 | if (Cur_Offset == -1) |
be9618de | 5462 | { |
be9618de | 5463 | /* |
0b415077 | 5464 | * First N_SLINE; set up initial correlation. |
be9618de | 5465 | */ |
0b415077 KR |
5466 | VMS_TBT_Line_PC_Correlation (dsc, |
5467 | val, | |
5468 | Text_Psect, | |
5469 | 0); | |
5470 | } | |
5471 | else if ((dsc - Cur_Line_Number) <= 0) | |
5472 | { | |
be9618de | 5473 | /* |
0b415077 KR |
5474 | * Line delta is not +ve, we need to close the line and |
5475 | * start a new PC/Line correlation. | |
be9618de | 5476 | */ |
0b415077 KR |
5477 | VMS_TBT_Line_PC_Correlation (0, |
5478 | val - Cur_Offset, | |
5479 | 0, | |
5480 | -1); | |
5481 | VMS_TBT_Line_PC_Correlation (dsc, | |
5482 | val, | |
5483 | Text_Psect, | |
5484 | 0); | |
5485 | } | |
5486 | else | |
5487 | { | |
be9618de | 5488 | /* |
0b415077 | 5489 | * Line delta is +ve, all is well. |
be9618de | 5490 | */ |
0b415077 KR |
5491 | VMS_TBT_Line_PC_Correlation (dsc - Cur_Line_Number, |
5492 | val - Cur_Offset, | |
5493 | 0, | |
5494 | 1); | |
be9618de | 5495 | } |
0b415077 KR |
5496 | /* Update the current line/PC info. */ |
5497 | Cur_Line_Number = dsc; | |
5498 | Cur_Offset = val; | |
be9618de | 5499 | break; |
be9618de | 5500 | |
be9618de KR |
5501 | /* |
5502 | * Source file | |
5503 | */ | |
0b415077 KR |
5504 | case N_SO: |
5505 | /* Remember that we had a source file and emit | |
5506 | the source file debugger record. */ | |
5507 | Cur_File = find_file (symbolP); | |
5508 | break; | |
5509 | ||
5510 | case N_SOL: | |
5511 | /* We need to make sure that we are really in the actual | |
5512 | source file when we compute the maximum line number. | |
5513 | Otherwise the debugger gets really confused. */ | |
5514 | Cur_File = find_file (symbolP); | |
5515 | break; | |
5516 | ||
5517 | default: | |
5518 | break; | |
5519 | } /* switch */ | |
5520 | } /* if (IS_DEBUG) */ | |
5521 | } /* for */ | |
5522 | ||
be9618de | 5523 | /* |
0b415077 KR |
5524 | * If there is a routine start defined, terminate it |
5525 | * (and the line numbers). | |
be9618de KR |
5526 | */ |
5527 | if (Current_Routine) | |
5528 | { | |
0b415077 | 5529 | /* Terminate the line numbers. */ |
be9618de | 5530 | VMS_TBT_Line_PC_Correlation (0, |
0b415077 | 5531 | text_siz - S_GET_VALUE (Current_Routine), |
be9618de KR |
5532 | 0, |
5533 | -1); | |
0b415077 | 5534 | /* Terminate the routine. */ |
be9618de KR |
5535 | VMS_TBT_Routine_End (text_siz, Current_Routine); |
5536 | } | |
0b415077 | 5537 | |
be9618de KR |
5538 | /* |
5539 | * Write the Traceback End Module TBT record | |
5540 | */ | |
5541 | VMS_TBT_Module_End (); | |
0b415077 | 5542 | } |
be9618de | 5543 | \f |
0b415077 KR |
5544 | |
5545 | /* | |
5546 | * Write a VAX/VMS object file (everything else has been done!) | |
5547 | */ | |
5548 | void | |
5549 | vms_write_object_file (text_siz, data_siz, bss_siz, text_frag_root, | |
5550 | data_frag_root) | |
5551 | unsigned text_siz; | |
5552 | unsigned data_siz; | |
5553 | unsigned bss_siz; | |
5554 | fragS *text_frag_root; | |
5555 | fragS *data_frag_root; | |
5556 | { | |
5557 | register struct VMS_Symbol *vsp; | |
5558 | ||
5559 | /* | |
5560 | * Initialize program section indices; values get updated later. | |
5561 | */ | |
5562 | Psect_Number = 0; /* next Psect Index to use */ | |
5563 | Text_Psect = -1; /* Text Psect Index */ | |
5564 | Data_Psect = -2; /* Data Psect Index JF: Was -1 */ | |
5565 | Bss_Psect = -3; /* Bss Psect Index JF: Was -1 */ | |
5566 | /* Initialize other state variables. */ | |
5567 | Data_Segment = 0; | |
5568 | Local_Initd_Data_Size = 0; | |
5569 | ||
5570 | /* | |
5571 | * Create the actual output file and populate it with required | |
5572 | * "module header" information. | |
5573 | */ | |
5574 | Create_VMS_Object_File (); | |
5575 | Write_VMS_MHD_Records (); | |
5576 | ||
5577 | /* | |
5578 | * Create the Data segment: | |
5579 | * | |
5580 | * Since this is REALLY hard to do any other way, | |
5581 | * we actually manufacture the data segment and | |
5582 | * then store the appropriate values out of it. | |
5583 | * We need to generate this early, so that globalvalues | |
5584 | * can be properly emitted. | |
5585 | */ | |
5586 | if (data_siz > 0) | |
5587 | synthesize_data_segment(data_siz, text_siz, data_frag_root); | |
5588 | ||
5589 | ||
5590 | /******* Global Symbol Directory *******/ | |
5591 | ||
5592 | /* | |
5593 | * Emit globalvalues now. We must do this before the text psect is | |
5594 | * defined, or we will get linker warnings about multiply defined | |
5595 | * symbols. All of the globalvalues "reference" psect 0, although | |
5596 | * it really does not have anything to do with it. | |
5597 | */ | |
5598 | VMS_Emit_Globalvalues (text_siz, data_siz, Data_Segment); | |
5599 | /* | |
5600 | * Define the Text Psect | |
5601 | */ | |
5602 | Text_Psect = Psect_Number++; | |
5700b874 | 5603 | VMS_Psect_Spec ("$code", text_siz, ps_TEXT, 0); |
0b415077 KR |
5604 | /* |
5605 | * Define the BSS Psect | |
5606 | */ | |
5607 | if (bss_siz > 0) | |
5608 | { | |
5609 | Bss_Psect = Psect_Number++; | |
5700b874 | 5610 | VMS_Psect_Spec ("$uninitialized_data", bss_siz, ps_DATA, 0); |
0b415077 KR |
5611 | } |
5612 | /* | |
5613 | * Define symbols to the linker. | |
5614 | */ | |
5615 | global_symbol_directory (text_siz, data_siz); | |
5616 | /* | |
5617 | * Define the Data Psect | |
5618 | */ | |
5619 | if (data_siz > 0 && Local_Initd_Data_Size > 0) | |
5620 | { | |
5621 | Data_Psect = Psect_Number++; | |
5700b874 | 5622 | VMS_Psect_Spec ("$data", Local_Initd_Data_Size, ps_DATA, 0); |
0b415077 KR |
5623 | /* |
5624 | * Local initialized data (N_DATA) symbols need to be updated to the | |
5625 | * proper value of Data_Psect now that it's actually been defined. | |
5626 | * (A dummy value was used in global_symbol_directory() above.) | |
5627 | */ | |
5628 | for (vsp = VMS_Symbols; vsp; vsp = vsp->Next) | |
5629 | if (vsp->Psect_Index < 0 && S_GET_RAW_TYPE (vsp->Symbol) == N_DATA) | |
5630 | vsp->Psect_Index = Data_Psect; | |
5631 | } | |
5632 | ||
5633 | ||
5634 | /******* Text Information and Relocation Records *******/ | |
5635 | ||
5636 | /* | |
5637 | * Write the text segment data | |
5638 | */ | |
5639 | if (text_siz > 0) | |
5640 | vms_fixup_text_section (text_siz, text_frag_root, data_frag_root); | |
5641 | /* | |
5642 | * Write the data segment data, then discard it. | |
5643 | */ | |
5644 | if (data_siz > 0) | |
5645 | { | |
5646 | vms_fixup_data_section (data_siz, text_siz); | |
5647 | free (Data_Segment), Data_Segment = 0; | |
5648 | } | |
5649 | ||
5650 | ||
5651 | /******* Debugger Symbol Table Records *******/ | |
5652 | ||
5653 | vms_build_DST (text_siz); | |
5654 | ||
5655 | ||
be9618de KR |
5656 | /* |
5657 | * Write the End Of Module record | |
5658 | */ | |
5659 | if (Entry_Point_Symbol == 0) | |
5660 | Write_VMS_EOM_Record (-1, 0); | |
5661 | else | |
5662 | Write_VMS_EOM_Record (Text_Psect, | |
5663 | S_GET_VALUE (Entry_Point_Symbol)); | |
3c650d09 | 5664 | |
be9618de KR |
5665 | /* |
5666 | * All done, close the object file | |
5667 | */ | |
5668 | Close_VMS_Object_File (); | |
5669 | } | |
5670 | ||
5671 | /* end of obj-vms.c */ |