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[gcc.git] / gcc / ada / a-except-2005.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- A D A . E X C E P T I O N S --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2012, Free Software Foundation, Inc. --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 ------------------------------------------------------------------------------
31
32 -- This version of Ada.Exceptions fully supports both Ada 95 and Ada 2005.
33 -- It is used in all situations except for the build of the compiler and
34 -- other basic tools. For these latter builds, we use an Ada 95-only version.
35
36 -- The reason for this splitting off of a separate version is that bootstrap
37 -- compilers often will be used that do not support Ada 2005 features, and
38 -- Ada.Exceptions is part of the compiler sources.
39
40 pragma Style_Checks (All_Checks);
41 -- No subprogram ordering check, due to logical grouping
42
43 pragma Polling (Off);
44 -- We must turn polling off for this unit, because otherwise we get
45 -- elaboration circularities with System.Exception_Tables.
46
47 with System; use System;
48 with System.Exceptions; use System.Exceptions;
49 with System.Exceptions_Debug; use System.Exceptions_Debug;
50 with System.Standard_Library; use System.Standard_Library;
51 with System.Soft_Links; use System.Soft_Links;
52 with System.WCh_Con; use System.WCh_Con;
53 with System.WCh_StW; use System.WCh_StW;
54
55 package body Ada.Exceptions is
56
57 pragma Suppress (All_Checks);
58 -- We definitely do not want exceptions occurring within this unit, or
59 -- we are in big trouble. If an exceptional situation does occur, better
60 -- that it not be raised, since raising it can cause confusing chaos.
61
62 -----------------------
63 -- Local Subprograms --
64 -----------------------
65
66 -- Note: the exported subprograms in this package body are called directly
67 -- from C clients using the given external name, even though they are not
68 -- technically visible in the Ada sense.
69
70 function Code_Address_For_AAA return System.Address;
71 function Code_Address_For_ZZZ return System.Address;
72 -- Return start and end of procedures in this package
73 --
74 -- These procedures are used to provide exclusion bounds in
75 -- calls to Call_Chain at exception raise points from this unit. The
76 -- purpose is to arrange for the exception tracebacks not to include
77 -- frames from routines involved in the raise process, as these are
78 -- meaningless from the user's standpoint.
79 --
80 -- For these bounds to be meaningful, we need to ensure that the object
81 -- code for the routines involved in processing a raise is located after
82 -- the object code Code_Address_For_AAA and before the object code
83 -- Code_Address_For_ZZZ. This will indeed be the case as long as the
84 -- following rules are respected:
85 --
86 -- 1) The bodies of the subprograms involved in processing a raise
87 -- are located after the body of Code_Address_For_AAA and before the
88 -- body of Code_Address_For_ZZZ.
89 --
90 -- 2) No pragma Inline applies to any of these subprograms, as this
91 -- could delay the corresponding assembly output until the end of
92 -- the unit.
93
94 procedure Call_Chain (Excep : EOA);
95 -- Store up to Max_Tracebacks in Excep, corresponding to the current
96 -- call chain.
97
98 function Image (Index : Integer) return String;
99 -- Return string image corresponding to Index
100
101 procedure To_Stderr (S : String);
102 pragma Export (Ada, To_Stderr, "__gnat_to_stderr");
103 -- Little routine to output string to stderr that is also used
104 -- in the tasking run time.
105
106 procedure To_Stderr (C : Character);
107 pragma Inline (To_Stderr);
108 pragma Export (Ada, To_Stderr, "__gnat_to_stderr_char");
109 -- Little routine to output a character to stderr, used by some of
110 -- the separate units below.
111
112 package Exception_Data is
113
114 ---------------------------------
115 -- Exception messages routines --
116 ---------------------------------
117
118 procedure Set_Exception_C_Msg
119 (Id : Exception_Id;
120 Msg1 : System.Address;
121 Line : Integer := 0;
122 Column : Integer := 0;
123 Msg2 : System.Address := System.Null_Address);
124 -- This routine is called to setup the exception referenced by the
125 -- Current_Excep field in the TSD to contain the indicated Id value
126 -- and message. Msg1 is a null terminated string which is generated
127 -- as the exception message. If line is non-zero, then a colon and
128 -- the decimal representation of this integer is appended to the
129 -- message. Ditto for Column. When Msg2 is non-null, a space and this
130 -- additional null terminated string is added to the message.
131
132 procedure Set_Exception_Msg
133 (Id : Exception_Id;
134 Message : String);
135 -- This routine is called to setup the exception referenced by the
136 -- Current_Excep field in the TSD to contain the indicated Id value
137 -- and message. Message is a string which is generated as the
138 -- exception message.
139
140 --------------------------------------
141 -- Exception information subprogram --
142 --------------------------------------
143
144 function Exception_Information (X : Exception_Occurrence) return String;
145 -- The format of the exception information is as follows:
146 --
147 -- Exception_Name: <exception name> (as in Exception_Name)
148 -- Message: <message> (only if Exception_Message is empty)
149 -- PID=nnnn (only if != 0)
150 -- Call stack traceback locations: (only if at least one location)
151 -- <0xyyyyyyyy 0xyyyyyyyy ...> (is recorded)
152 --
153 -- The lines are separated by a ASCII.LF character.
154 -- The nnnn is the partition Id given as decimal digits.
155 -- The 0x... line represents traceback program counter locations, in
156 -- execution order with the first one being the exception location. It
157 -- is present only
158 --
159 -- The Exception_Name and Message lines are omitted in the abort
160 -- signal case, since this is not really an exception.
161
162 -- !! If the format of the generated string is changed, please note
163 -- !! that an equivalent modification to the routine String_To_EO must
164 -- !! be made to preserve proper functioning of the stream attributes.
165
166 ---------------------------------------
167 -- Exception backtracing subprograms --
168 ---------------------------------------
169
170 -- What is automatically output when exception tracing is on is the
171 -- usual exception information with the call chain backtrace possibly
172 -- tailored by a backtrace decorator. Modifying Exception_Information
173 -- itself is not a good idea because the decorated output is completely
174 -- out of control and would break all our code related to the streaming
175 -- of exceptions. We then provide an alternative function to compute
176 -- the possibly tailored output, which is equivalent if no decorator is
177 -- currently set:
178
179 function Tailored_Exception_Information
180 (X : Exception_Occurrence) return String;
181 -- Exception information to be output in the case of automatic tracing
182 -- requested through GNAT.Exception_Traces.
183 --
184 -- This is the same as Exception_Information if no backtrace decorator
185 -- is currently in place. Otherwise, this is Exception_Information with
186 -- the call chain raw addresses replaced by the result of a call to the
187 -- current decorator provided with the call chain addresses.
188
189 pragma Export
190 (Ada, Tailored_Exception_Information,
191 "__gnat_tailored_exception_information");
192 -- This is currently used by System.Tasking.Stages
193
194 end Exception_Data;
195
196 package Exception_Traces is
197
198 use Exception_Data;
199 -- Imports Tailored_Exception_Information
200
201 ----------------------------------------------
202 -- Run-Time Exception Notification Routines --
203 ----------------------------------------------
204
205 -- These subprograms provide a common run-time interface to trigger the
206 -- actions required when an exception is about to be propagated (e.g.
207 -- user specified actions or output of exception information). They are
208 -- exported to be usable by the Ada exception handling personality
209 -- routine when the GCC 3 mechanism is used.
210
211 procedure Notify_Handled_Exception;
212 pragma Export
213 (C, Notify_Handled_Exception, "__gnat_notify_handled_exception");
214 -- This routine is called for a handled occurrence is about to be
215 -- propagated.
216
217 procedure Notify_Unhandled_Exception;
218 pragma Export
219 (C, Notify_Unhandled_Exception, "__gnat_notify_unhandled_exception");
220 -- This routine is called when an unhandled occurrence is about to be
221 -- propagated.
222
223 procedure Unhandled_Exception_Terminate;
224 pragma No_Return (Unhandled_Exception_Terminate);
225 -- This procedure is called to terminate execution following an
226 -- unhandled exception. The exception information, including
227 -- traceback if available is output, and execution is then
228 -- terminated. Note that at the point where this routine is
229 -- called, the stack has typically been destroyed.
230
231 end Exception_Traces;
232
233 package Exception_Propagation is
234
235 use Exception_Traces;
236 -- Imports Notify_Unhandled_Exception and
237 -- Unhandled_Exception_Terminate
238
239 ------------------------------------
240 -- Exception propagation routines --
241 ------------------------------------
242
243 procedure Propagate_Exception;
244 pragma No_Return (Propagate_Exception);
245 -- This procedure propagates the exception represented by the occurrence
246 -- referenced by Current_Excep in the TSD for the current task.
247
248 end Exception_Propagation;
249
250 package Stream_Attributes is
251
252 --------------------------------
253 -- Stream attributes routines --
254 --------------------------------
255
256 function EId_To_String (X : Exception_Id) return String;
257 function String_To_EId (S : String) return Exception_Id;
258 -- Functions for implementing Exception_Id stream attributes
259
260 function EO_To_String (X : Exception_Occurrence) return String;
261 function String_To_EO (S : String) return Exception_Occurrence;
262 -- Functions for implementing Exception_Occurrence stream
263 -- attributes
264
265 end Stream_Attributes;
266
267 procedure Raise_Current_Excep (E : Exception_Id);
268 pragma No_Return (Raise_Current_Excep);
269 pragma Export (C, Raise_Current_Excep, "__gnat_raise_nodefer_with_msg");
270 -- This is a simple wrapper to Exception_Propagation.Propagate_Exception.
271 --
272 -- This external name for Raise_Current_Excep is historical, and probably
273 -- should be changed but for now we keep it, because gdb and gigi know
274 -- about it.
275
276 procedure Raise_Exception_No_Defer
277 (E : Exception_Id; Message : String := "");
278 pragma Export
279 (Ada, Raise_Exception_No_Defer,
280 "ada__exceptions__raise_exception_no_defer");
281 pragma No_Return (Raise_Exception_No_Defer);
282 -- Similar to Raise_Exception, but with no abort deferral
283
284 procedure Raise_With_Msg (E : Exception_Id);
285 pragma No_Return (Raise_With_Msg);
286 pragma Export (C, Raise_With_Msg, "__gnat_raise_with_msg");
287 -- Raises an exception with given exception id value. A message
288 -- is associated with the raise, and has already been stored in the
289 -- exception occurrence referenced by the Current_Excep in the TSD.
290 -- Abort is deferred before the raise call.
291
292 procedure Raise_With_Location_And_Msg
293 (E : Exception_Id;
294 F : System.Address;
295 L : Integer;
296 C : Integer := 0;
297 M : System.Address := System.Null_Address);
298 pragma No_Return (Raise_With_Location_And_Msg);
299 -- Raise an exception with given exception id value. A filename and line
300 -- number is associated with the raise and is stored in the exception
301 -- occurrence and in addition a column and a string message M may be
302 -- appended to this (if not null/0).
303
304 procedure Raise_Constraint_Error
305 (File : System.Address;
306 Line : Integer);
307 pragma No_Return (Raise_Constraint_Error);
308 pragma Export
309 (C, Raise_Constraint_Error, "__gnat_raise_constraint_error");
310 -- Raise constraint error with file:line information
311
312 procedure Raise_Constraint_Error_Msg
313 (File : System.Address;
314 Line : Integer;
315 Column : Integer;
316 Msg : System.Address);
317 pragma No_Return (Raise_Constraint_Error_Msg);
318 pragma Export
319 (C, Raise_Constraint_Error_Msg, "__gnat_raise_constraint_error_msg");
320 -- Raise constraint error with file:line:col + msg information
321
322 procedure Raise_Program_Error
323 (File : System.Address;
324 Line : Integer);
325 pragma No_Return (Raise_Program_Error);
326 pragma Export
327 (C, Raise_Program_Error, "__gnat_raise_program_error");
328 -- Raise program error with file:line information
329
330 procedure Raise_Program_Error_Msg
331 (File : System.Address;
332 Line : Integer;
333 Msg : System.Address);
334 pragma No_Return (Raise_Program_Error_Msg);
335 pragma Export
336 (C, Raise_Program_Error_Msg, "__gnat_raise_program_error_msg");
337 -- Raise program error with file:line + msg information
338
339 procedure Raise_Storage_Error
340 (File : System.Address;
341 Line : Integer);
342 pragma No_Return (Raise_Storage_Error);
343 pragma Export
344 (C, Raise_Storage_Error, "__gnat_raise_storage_error");
345 -- Raise storage error with file:line information
346
347 procedure Raise_Storage_Error_Msg
348 (File : System.Address;
349 Line : Integer;
350 Msg : System.Address);
351 pragma No_Return (Raise_Storage_Error_Msg);
352 pragma Export
353 (C, Raise_Storage_Error_Msg, "__gnat_raise_storage_error_msg");
354 -- Raise storage error with file:line + reason msg information
355
356 -- The exception raising process and the automatic tracing mechanism rely
357 -- on some careful use of flags attached to the exception occurrence. The
358 -- graph below illustrates the relations between the Raise_ subprograms
359 -- and identifies the points where basic flags such as Exception_Raised
360 -- are initialized.
361 --
362 -- (i) signs indicate the flags initialization points. R stands for Raise,
363 -- W for With, and E for Exception.
364 --
365 -- R_No_Msg R_E R_Pe R_Ce R_Se
366 -- | | | | |
367 -- +--+ +--+ +---+ | +---+
368 -- | | | | |
369 -- R_E_No_Defer(i) R_W_Msg(i) R_W_Loc
370 -- | | | |
371 -- +------------+ | +-----------+ +--+
372 -- | | | |
373 -- | | | Set_E_C_Msg(i)
374 -- | | |
375 -- Raise_Current_Excep
376
377 procedure Reraise;
378 pragma No_Return (Reraise);
379 pragma Export (C, Reraise, "__gnat_reraise");
380 -- Reraises the exception referenced by the Current_Excep field of
381 -- the TSD (all fields of this exception occurrence are set). Abort
382 -- is deferred before the reraise operation.
383
384 procedure Transfer_Occurrence
385 (Target : Exception_Occurrence_Access;
386 Source : Exception_Occurrence);
387 pragma Export (C, Transfer_Occurrence, "__gnat_transfer_occurrence");
388 -- Called from System.Tasking.RendezVous.Exceptional_Complete_RendezVous
389 -- to setup Target from Source as an exception to be propagated in the
390 -- caller task. Target is expected to be a pointer to the fixed TSD
391 -- occurrence for this task.
392
393 -----------------------------
394 -- Run-Time Check Routines --
395 -----------------------------
396
397 -- These routines raise a specific exception with a reason message
398 -- attached. The parameters are the file name and line number in each
399 -- case. The names are keyed to the codes defined in types.ads and
400 -- a-types.h (for example, the name Rcheck_05 refers to the Reason
401 -- RT_Exception_Code'Val (5)).
402
403 procedure Rcheck_00 (File : System.Address; Line : Integer);
404 procedure Rcheck_01 (File : System.Address; Line : Integer);
405 procedure Rcheck_02 (File : System.Address; Line : Integer);
406 procedure Rcheck_03 (File : System.Address; Line : Integer);
407 procedure Rcheck_04 (File : System.Address; Line : Integer);
408 procedure Rcheck_05 (File : System.Address; Line : Integer);
409 procedure Rcheck_06 (File : System.Address; Line : Integer);
410 procedure Rcheck_07 (File : System.Address; Line : Integer);
411 procedure Rcheck_08 (File : System.Address; Line : Integer);
412 procedure Rcheck_09 (File : System.Address; Line : Integer);
413 procedure Rcheck_10 (File : System.Address; Line : Integer);
414 procedure Rcheck_11 (File : System.Address; Line : Integer);
415 procedure Rcheck_12 (File : System.Address; Line : Integer);
416 procedure Rcheck_13 (File : System.Address; Line : Integer);
417 procedure Rcheck_14 (File : System.Address; Line : Integer);
418 procedure Rcheck_15 (File : System.Address; Line : Integer);
419 procedure Rcheck_16 (File : System.Address; Line : Integer);
420 procedure Rcheck_17 (File : System.Address; Line : Integer);
421 procedure Rcheck_18 (File : System.Address; Line : Integer);
422 procedure Rcheck_19 (File : System.Address; Line : Integer);
423 procedure Rcheck_20 (File : System.Address; Line : Integer);
424 procedure Rcheck_21 (File : System.Address; Line : Integer);
425 procedure Rcheck_23 (File : System.Address; Line : Integer);
426 procedure Rcheck_24 (File : System.Address; Line : Integer);
427 procedure Rcheck_25 (File : System.Address; Line : Integer);
428 procedure Rcheck_26 (File : System.Address; Line : Integer);
429 procedure Rcheck_27 (File : System.Address; Line : Integer);
430 procedure Rcheck_28 (File : System.Address; Line : Integer);
431 procedure Rcheck_29 (File : System.Address; Line : Integer);
432 procedure Rcheck_30 (File : System.Address; Line : Integer);
433 procedure Rcheck_31 (File : System.Address; Line : Integer);
434 procedure Rcheck_32 (File : System.Address; Line : Integer);
435 procedure Rcheck_33 (File : System.Address; Line : Integer);
436 procedure Rcheck_34 (File : System.Address; Line : Integer);
437
438 procedure Rcheck_00_Ext
439 (File : System.Address; Line, Column : Integer);
440 procedure Rcheck_05_Ext
441 (File : System.Address; Line, Column, Index, First, Last : Integer);
442 procedure Rcheck_06_Ext
443 (File : System.Address; Line, Column, Index, First, Last : Integer);
444 procedure Rcheck_12_Ext
445 (File : System.Address; Line, Column, Index, First, Last : Integer);
446
447 procedure Rcheck_22 (File : System.Address; Line : Integer);
448 -- This routine is separated out because it has quite different behavior
449 -- from the others. This is the "finalize/adjust raised exception". This
450 -- subprogram is always called with abort deferred, unlike all other
451 -- Rcheck_* routines, it needs to call Raise_Exception_No_Defer.
452 --
453 -- It should probably have a distinguished name ???
454
455 pragma Export (C, Rcheck_00, "__gnat_rcheck_00");
456 pragma Export (C, Rcheck_01, "__gnat_rcheck_01");
457 pragma Export (C, Rcheck_02, "__gnat_rcheck_02");
458 pragma Export (C, Rcheck_03, "__gnat_rcheck_03");
459 pragma Export (C, Rcheck_04, "__gnat_rcheck_04");
460 pragma Export (C, Rcheck_05, "__gnat_rcheck_05");
461 pragma Export (C, Rcheck_06, "__gnat_rcheck_06");
462 pragma Export (C, Rcheck_07, "__gnat_rcheck_07");
463 pragma Export (C, Rcheck_08, "__gnat_rcheck_08");
464 pragma Export (C, Rcheck_09, "__gnat_rcheck_09");
465 pragma Export (C, Rcheck_10, "__gnat_rcheck_10");
466 pragma Export (C, Rcheck_11, "__gnat_rcheck_11");
467 pragma Export (C, Rcheck_12, "__gnat_rcheck_12");
468 pragma Export (C, Rcheck_13, "__gnat_rcheck_13");
469 pragma Export (C, Rcheck_14, "__gnat_rcheck_14");
470 pragma Export (C, Rcheck_15, "__gnat_rcheck_15");
471 pragma Export (C, Rcheck_16, "__gnat_rcheck_16");
472 pragma Export (C, Rcheck_17, "__gnat_rcheck_17");
473 pragma Export (C, Rcheck_18, "__gnat_rcheck_18");
474 pragma Export (C, Rcheck_19, "__gnat_rcheck_19");
475 pragma Export (C, Rcheck_20, "__gnat_rcheck_20");
476 pragma Export (C, Rcheck_21, "__gnat_rcheck_21");
477 pragma Export (C, Rcheck_22, "__gnat_rcheck_22");
478 pragma Export (C, Rcheck_23, "__gnat_rcheck_23");
479 pragma Export (C, Rcheck_24, "__gnat_rcheck_24");
480 pragma Export (C, Rcheck_25, "__gnat_rcheck_25");
481 pragma Export (C, Rcheck_26, "__gnat_rcheck_26");
482 pragma Export (C, Rcheck_27, "__gnat_rcheck_27");
483 pragma Export (C, Rcheck_28, "__gnat_rcheck_28");
484 pragma Export (C, Rcheck_29, "__gnat_rcheck_29");
485 pragma Export (C, Rcheck_30, "__gnat_rcheck_30");
486 pragma Export (C, Rcheck_31, "__gnat_rcheck_31");
487 pragma Export (C, Rcheck_32, "__gnat_rcheck_32");
488 pragma Export (C, Rcheck_33, "__gnat_rcheck_33");
489 pragma Export (C, Rcheck_34, "__gnat_rcheck_34");
490
491 pragma Export (C, Rcheck_00_Ext, "__gnat_rcheck_00_ext");
492 pragma Export (C, Rcheck_05_Ext, "__gnat_rcheck_05_ext");
493 pragma Export (C, Rcheck_06_Ext, "__gnat_rcheck_06_ext");
494 pragma Export (C, Rcheck_12_Ext, "__gnat_rcheck_12_ext");
495
496 -- None of these procedures ever returns (they raise an exception!). By
497 -- using pragma No_Return, we ensure that any junk code after the call,
498 -- such as normal return epilog stuff, can be eliminated).
499
500 pragma No_Return (Rcheck_00);
501 pragma No_Return (Rcheck_01);
502 pragma No_Return (Rcheck_02);
503 pragma No_Return (Rcheck_03);
504 pragma No_Return (Rcheck_04);
505 pragma No_Return (Rcheck_05);
506 pragma No_Return (Rcheck_06);
507 pragma No_Return (Rcheck_07);
508 pragma No_Return (Rcheck_08);
509 pragma No_Return (Rcheck_09);
510 pragma No_Return (Rcheck_10);
511 pragma No_Return (Rcheck_11);
512 pragma No_Return (Rcheck_12);
513 pragma No_Return (Rcheck_13);
514 pragma No_Return (Rcheck_14);
515 pragma No_Return (Rcheck_15);
516 pragma No_Return (Rcheck_16);
517 pragma No_Return (Rcheck_17);
518 pragma No_Return (Rcheck_18);
519 pragma No_Return (Rcheck_19);
520 pragma No_Return (Rcheck_20);
521 pragma No_Return (Rcheck_21);
522 pragma No_Return (Rcheck_22);
523 pragma No_Return (Rcheck_23);
524 pragma No_Return (Rcheck_24);
525 pragma No_Return (Rcheck_25);
526 pragma No_Return (Rcheck_26);
527 pragma No_Return (Rcheck_27);
528 pragma No_Return (Rcheck_28);
529 pragma No_Return (Rcheck_29);
530 pragma No_Return (Rcheck_30);
531 pragma No_Return (Rcheck_32);
532 pragma No_Return (Rcheck_33);
533 pragma No_Return (Rcheck_34);
534
535 pragma No_Return (Rcheck_00_Ext);
536 pragma No_Return (Rcheck_05_Ext);
537 pragma No_Return (Rcheck_06_Ext);
538 pragma No_Return (Rcheck_12_Ext);
539
540 ---------------------------------------------
541 -- Reason Strings for Run-Time Check Calls --
542 ---------------------------------------------
543
544 -- These strings are null-terminated and are used by Rcheck_nn. The
545 -- strings correspond to the definitions for Types.RT_Exception_Code.
546
547 use ASCII;
548
549 Rmsg_00 : constant String := "access check failed" & NUL;
550 Rmsg_01 : constant String := "access parameter is null" & NUL;
551 Rmsg_02 : constant String := "discriminant check failed" & NUL;
552 Rmsg_03 : constant String := "divide by zero" & NUL;
553 Rmsg_04 : constant String := "explicit raise" & NUL;
554 Rmsg_05 : constant String := "index check failed" & NUL;
555 Rmsg_06 : constant String := "invalid data" & NUL;
556 Rmsg_07 : constant String := "length check failed" & NUL;
557 Rmsg_08 : constant String := "null Exception_Id" & NUL;
558 Rmsg_09 : constant String := "null-exclusion check failed" & NUL;
559 Rmsg_10 : constant String := "overflow check failed" & NUL;
560 Rmsg_11 : constant String := "partition check failed" & NUL;
561 Rmsg_12 : constant String := "range check failed" & NUL;
562 Rmsg_13 : constant String := "tag check failed" & NUL;
563 Rmsg_14 : constant String := "access before elaboration" & NUL;
564 Rmsg_15 : constant String := "accessibility check failed" & NUL;
565 Rmsg_16 : constant String := "attempt to take address of" &
566 " intrinsic subprogram" & NUL;
567 Rmsg_17 : constant String := "all guards closed" & NUL;
568 Rmsg_18 : constant String := "improper use of generic subtype" &
569 " with predicate" & NUL;
570 Rmsg_19 : constant String := "Current_Task referenced in entry" &
571 " body" & NUL;
572 Rmsg_20 : constant String := "duplicated entry address" & NUL;
573 Rmsg_21 : constant String := "explicit raise" & NUL;
574 Rmsg_22 : constant String := "finalize/adjust raised exception" & NUL;
575 Rmsg_23 : constant String := "implicit return with No_Return" & NUL;
576 Rmsg_24 : constant String := "misaligned address value" & NUL;
577 Rmsg_25 : constant String := "missing return" & NUL;
578 Rmsg_26 : constant String := "overlaid controlled object" & NUL;
579 Rmsg_27 : constant String := "potentially blocking operation" & NUL;
580 Rmsg_28 : constant String := "stubbed subprogram called" & NUL;
581 Rmsg_29 : constant String := "unchecked union restriction" & NUL;
582 Rmsg_30 : constant String := "actual/returned class-wide" &
583 " value not transportable" & NUL;
584 Rmsg_31 : constant String := "empty storage pool" & NUL;
585 Rmsg_32 : constant String := "explicit raise" & NUL;
586 Rmsg_33 : constant String := "infinite recursion" & NUL;
587 Rmsg_34 : constant String := "object too large" & NUL;
588
589 -----------------------
590 -- Polling Interface --
591 -----------------------
592
593 type Unsigned is mod 2 ** 32;
594
595 Counter : Unsigned := 0;
596 pragma Warnings (Off, Counter);
597 -- This counter is provided for convenience. It can be used in Poll to
598 -- perform periodic but not systematic operations.
599
600 procedure Poll is separate;
601 -- The actual polling routine is separate, so that it can easily
602 -- be replaced with a target dependent version.
603
604 --------------------------
605 -- Code_Address_For_AAA --
606 --------------------------
607
608 -- This function gives us the start of the PC range for addresses
609 -- within the exception unit itself. We hope that gigi/gcc keep all the
610 -- procedures in their original order!
611
612 function Code_Address_For_AAA return System.Address is
613 begin
614 -- We are using a label instead of merely using
615 -- Code_Address_For_AAA'Address because on some platforms the latter
616 -- does not yield the address we want, but the address of a stub or of
617 -- a descriptor instead. This is the case at least on Alpha-VMS and
618 -- PA-HPUX.
619
620 <<Start_Of_AAA>>
621 return Start_Of_AAA'Address;
622 end Code_Address_For_AAA;
623
624 ----------------
625 -- Call_Chain --
626 ----------------
627
628 procedure Call_Chain (Excep : EOA) is separate;
629 -- The actual Call_Chain routine is separate, so that it can easily
630 -- be dummied out when no exception traceback information is needed.
631
632 ------------------------------
633 -- Current_Target_Exception --
634 ------------------------------
635
636 function Current_Target_Exception return Exception_Occurrence is
637 begin
638 return Null_Occurrence;
639 end Current_Target_Exception;
640
641 -------------------
642 -- EId_To_String --
643 -------------------
644
645 function EId_To_String (X : Exception_Id) return String
646 renames Stream_Attributes.EId_To_String;
647
648 ------------------
649 -- EO_To_String --
650 ------------------
651
652 -- We use the null string to represent the null occurrence, otherwise
653 -- we output the Exception_Information string for the occurrence.
654
655 function EO_To_String (X : Exception_Occurrence) return String
656 renames Stream_Attributes.EO_To_String;
657
658 ------------------------
659 -- Exception_Identity --
660 ------------------------
661
662 function Exception_Identity
663 (X : Exception_Occurrence) return Exception_Id
664 is
665 begin
666 -- Note that the following test used to be here for the original
667 -- Ada 95 semantics, but these were modified by AI-241 to require
668 -- returning Null_Id instead of raising Constraint_Error.
669
670 -- if X.Id = Null_Id then
671 -- raise Constraint_Error;
672 -- end if;
673
674 return X.Id;
675 end Exception_Identity;
676
677 ---------------------------
678 -- Exception_Information --
679 ---------------------------
680
681 function Exception_Information (X : Exception_Occurrence) return String is
682 begin
683 if X.Id = Null_Id then
684 raise Constraint_Error;
685 end if;
686
687 return Exception_Data.Exception_Information (X);
688 end Exception_Information;
689
690 -----------------------
691 -- Exception_Message --
692 -----------------------
693
694 function Exception_Message (X : Exception_Occurrence) return String is
695 begin
696 if X.Id = Null_Id then
697 raise Constraint_Error;
698 end if;
699
700 return X.Msg (1 .. X.Msg_Length);
701 end Exception_Message;
702
703 --------------------
704 -- Exception_Name --
705 --------------------
706
707 function Exception_Name (Id : Exception_Id) return String is
708 begin
709 if Id = null then
710 raise Constraint_Error;
711 end if;
712
713 return To_Ptr (Id.Full_Name) (1 .. Id.Name_Length - 1);
714 end Exception_Name;
715
716 function Exception_Name (X : Exception_Occurrence) return String is
717 begin
718 return Exception_Name (X.Id);
719 end Exception_Name;
720
721 ---------------------------
722 -- Exception_Name_Simple --
723 ---------------------------
724
725 function Exception_Name_Simple (X : Exception_Occurrence) return String is
726 Name : constant String := Exception_Name (X);
727 P : Natural;
728
729 begin
730 P := Name'Length;
731 while P > 1 loop
732 exit when Name (P - 1) = '.';
733 P := P - 1;
734 end loop;
735
736 -- Return result making sure lower bound is 1
737
738 declare
739 subtype Rname is String (1 .. Name'Length - P + 1);
740 begin
741 return Rname (Name (P .. Name'Length));
742 end;
743 end Exception_Name_Simple;
744
745 --------------------
746 -- Exception_Data --
747 --------------------
748
749 package body Exception_Data is separate;
750 -- This package can be easily dummied out if we do not want the
751 -- basic support for exception messages (such as in Ada 83).
752
753 ---------------------------
754 -- Exception_Propagation --
755 ---------------------------
756
757 package body Exception_Propagation is separate;
758 -- Depending on the actual exception mechanism used (front-end or
759 -- back-end based), the implementation will differ, which is why this
760 -- package is separated.
761
762 ----------------------
763 -- Exception_Traces --
764 ----------------------
765
766 package body Exception_Traces is separate;
767 -- Depending on the underlying support for IO the implementation
768 -- will differ. Moreover we would like to dummy out this package
769 -- in case we do not want any exception tracing support. This is
770 -- why this package is separated.
771
772 -----------
773 -- Image --
774 -----------
775
776 function Image (Index : Integer) return String is
777 Result : constant String := Integer'Image (Index);
778 begin
779 if Result (1) = ' ' then
780 return Result (2 .. Result'Last);
781 else
782 return Result;
783 end if;
784 end Image;
785
786 -----------------------
787 -- Stream Attributes --
788 -----------------------
789
790 package body Stream_Attributes is separate;
791 -- This package can be easily dummied out if we do not want the
792 -- support for streaming Exception_Ids and Exception_Occurrences.
793
794 ----------------------------
795 -- Raise_Constraint_Error --
796 ----------------------------
797
798 procedure Raise_Constraint_Error (File : System.Address; Line : Integer) is
799 begin
800 Raise_With_Location_And_Msg (Constraint_Error_Def'Access, File, Line);
801 end Raise_Constraint_Error;
802
803 --------------------------------
804 -- Raise_Constraint_Error_Msg --
805 --------------------------------
806
807 procedure Raise_Constraint_Error_Msg
808 (File : System.Address;
809 Line : Integer;
810 Column : Integer;
811 Msg : System.Address)
812 is
813 begin
814 Raise_With_Location_And_Msg
815 (Constraint_Error_Def'Access, File, Line, Column, Msg);
816 end Raise_Constraint_Error_Msg;
817
818 -------------------------
819 -- Raise_Current_Excep --
820 -------------------------
821
822 procedure Raise_Current_Excep (E : Exception_Id) is
823 begin
824 Debug_Raise_Exception (E => SSL.Exception_Data_Ptr (E));
825 Exception_Propagation.Propagate_Exception;
826 end Raise_Current_Excep;
827
828 ---------------------
829 -- Raise_Exception --
830 ---------------------
831
832 procedure Raise_Exception
833 (E : Exception_Id;
834 Message : String := "")
835 is
836 EF : Exception_Id := E;
837
838 begin
839 -- Raise CE if E = Null_ID (AI-446)
840
841 if E = null then
842 EF := Constraint_Error'Identity;
843 end if;
844
845 -- Go ahead and raise appropriate exception
846
847 Exception_Data.Set_Exception_Msg (EF, Message);
848
849 if not ZCX_By_Default then
850 Abort_Defer.all;
851 end if;
852
853 Raise_Current_Excep (EF);
854 end Raise_Exception;
855
856 ----------------------------
857 -- Raise_Exception_Always --
858 ----------------------------
859
860 procedure Raise_Exception_Always
861 (E : Exception_Id;
862 Message : String := "")
863 is
864 begin
865 Exception_Data.Set_Exception_Msg (E, Message);
866 if not ZCX_By_Default then
867 Abort_Defer.all;
868 end if;
869 Raise_Current_Excep (E);
870 end Raise_Exception_Always;
871
872 ------------------------------
873 -- Raise_Exception_No_Defer --
874 ------------------------------
875
876 procedure Raise_Exception_No_Defer
877 (E : Exception_Id;
878 Message : String := "")
879 is
880 begin
881 Exception_Data.Set_Exception_Msg (E, Message);
882
883 -- Do not call Abort_Defer.all, as specified by the spec
884
885 Raise_Current_Excep (E);
886 end Raise_Exception_No_Defer;
887
888 -------------------------------------
889 -- Raise_From_Controlled_Operation --
890 -------------------------------------
891
892 procedure Raise_From_Controlled_Operation
893 (X : Ada.Exceptions.Exception_Occurrence)
894 is
895 Prefix : constant String := "adjust/finalize raised ";
896 Orig_Msg : constant String := Exception_Message (X);
897 Orig_Prefix_Length : constant Natural :=
898 Integer'Min (Prefix'Length, Orig_Msg'Length);
899 Orig_Prefix : String renames Orig_Msg
900 (Orig_Msg'First ..
901 Orig_Msg'First + Orig_Prefix_Length - 1);
902 begin
903 -- Message already has the proper prefix, just re-raise
904
905 if Orig_Prefix = Prefix then
906 Raise_Exception_No_Defer
907 (E => Program_Error'Identity,
908 Message => Orig_Msg);
909
910 else
911 declare
912 New_Msg : constant String := Prefix & Exception_Name (X);
913
914 begin
915 -- No message present, just provide our own
916
917 if Orig_Msg = "" then
918 Raise_Exception_No_Defer
919 (E => Program_Error'Identity,
920 Message => New_Msg);
921
922 -- Message present, add informational prefix
923
924 else
925 Raise_Exception_No_Defer
926 (E => Program_Error'Identity,
927 Message => New_Msg & ": " & Orig_Msg);
928 end if;
929 end;
930 end if;
931 end Raise_From_Controlled_Operation;
932
933 -------------------------------
934 -- Raise_From_Signal_Handler --
935 -------------------------------
936
937 procedure Raise_From_Signal_Handler
938 (E : Exception_Id;
939 M : System.Address)
940 is
941 begin
942 Exception_Data.Set_Exception_C_Msg (E, M);
943
944 if not ZCX_By_Default then
945 Abort_Defer.all;
946 end if;
947
948 Raise_Current_Excep (E);
949 end Raise_From_Signal_Handler;
950
951 -------------------------
952 -- Raise_Program_Error --
953 -------------------------
954
955 procedure Raise_Program_Error
956 (File : System.Address;
957 Line : Integer)
958 is
959 begin
960 Raise_With_Location_And_Msg (Program_Error_Def'Access, File, Line);
961 end Raise_Program_Error;
962
963 -----------------------------
964 -- Raise_Program_Error_Msg --
965 -----------------------------
966
967 procedure Raise_Program_Error_Msg
968 (File : System.Address;
969 Line : Integer;
970 Msg : System.Address)
971 is
972 begin
973 Raise_With_Location_And_Msg
974 (Program_Error_Def'Access, File, Line, M => Msg);
975 end Raise_Program_Error_Msg;
976
977 -------------------------
978 -- Raise_Storage_Error --
979 -------------------------
980
981 procedure Raise_Storage_Error
982 (File : System.Address;
983 Line : Integer)
984 is
985 begin
986 Raise_With_Location_And_Msg (Storage_Error_Def'Access, File, Line);
987 end Raise_Storage_Error;
988
989 -----------------------------
990 -- Raise_Storage_Error_Msg --
991 -----------------------------
992
993 procedure Raise_Storage_Error_Msg
994 (File : System.Address;
995 Line : Integer;
996 Msg : System.Address)
997 is
998 begin
999 Raise_With_Location_And_Msg
1000 (Storage_Error_Def'Access, File, Line, M => Msg);
1001 end Raise_Storage_Error_Msg;
1002
1003 ---------------------------------
1004 -- Raise_With_Location_And_Msg --
1005 ---------------------------------
1006
1007 procedure Raise_With_Location_And_Msg
1008 (E : Exception_Id;
1009 F : System.Address;
1010 L : Integer;
1011 C : Integer := 0;
1012 M : System.Address := System.Null_Address)
1013 is
1014 begin
1015 Exception_Data.Set_Exception_C_Msg (E, F, L, C, M);
1016
1017 if not ZCX_By_Default then
1018 Abort_Defer.all;
1019 end if;
1020
1021 Raise_Current_Excep (E);
1022 end Raise_With_Location_And_Msg;
1023
1024 --------------------
1025 -- Raise_With_Msg --
1026 --------------------
1027
1028 procedure Raise_With_Msg (E : Exception_Id) is
1029 Excep : constant EOA := Get_Current_Excep.all;
1030
1031 begin
1032 Excep.Exception_Raised := False;
1033 Excep.Id := E;
1034 Excep.Num_Tracebacks := 0;
1035 Excep.Pid := Local_Partition_ID;
1036
1037 -- The following is a common pattern, should be abstracted
1038 -- into a procedure call ???
1039
1040 if not ZCX_By_Default then
1041 Abort_Defer.all;
1042 end if;
1043
1044 Raise_Current_Excep (E);
1045 end Raise_With_Msg;
1046
1047 --------------------------------------
1048 -- Calls to Run-Time Check Routines --
1049 --------------------------------------
1050
1051 procedure Rcheck_00 (File : System.Address; Line : Integer) is
1052 begin
1053 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_00'Address);
1054 end Rcheck_00;
1055
1056 procedure Rcheck_01 (File : System.Address; Line : Integer) is
1057 begin
1058 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_01'Address);
1059 end Rcheck_01;
1060
1061 procedure Rcheck_02 (File : System.Address; Line : Integer) is
1062 begin
1063 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_02'Address);
1064 end Rcheck_02;
1065
1066 procedure Rcheck_03 (File : System.Address; Line : Integer) is
1067 begin
1068 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_03'Address);
1069 end Rcheck_03;
1070
1071 procedure Rcheck_04 (File : System.Address; Line : Integer) is
1072 begin
1073 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_04'Address);
1074 end Rcheck_04;
1075
1076 procedure Rcheck_05 (File : System.Address; Line : Integer) is
1077 begin
1078 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_05'Address);
1079 end Rcheck_05;
1080
1081 procedure Rcheck_06 (File : System.Address; Line : Integer) is
1082 begin
1083 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_06'Address);
1084 end Rcheck_06;
1085
1086 procedure Rcheck_07 (File : System.Address; Line : Integer) is
1087 begin
1088 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_07'Address);
1089 end Rcheck_07;
1090
1091 procedure Rcheck_08 (File : System.Address; Line : Integer) is
1092 begin
1093 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_08'Address);
1094 end Rcheck_08;
1095
1096 procedure Rcheck_09 (File : System.Address; Line : Integer) is
1097 begin
1098 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_09'Address);
1099 end Rcheck_09;
1100
1101 procedure Rcheck_10 (File : System.Address; Line : Integer) is
1102 begin
1103 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_10'Address);
1104 end Rcheck_10;
1105
1106 procedure Rcheck_11 (File : System.Address; Line : Integer) is
1107 begin
1108 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_11'Address);
1109 end Rcheck_11;
1110
1111 procedure Rcheck_12 (File : System.Address; Line : Integer) is
1112 begin
1113 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_12'Address);
1114 end Rcheck_12;
1115
1116 procedure Rcheck_13 (File : System.Address; Line : Integer) is
1117 begin
1118 Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_13'Address);
1119 end Rcheck_13;
1120
1121 procedure Rcheck_14 (File : System.Address; Line : Integer) is
1122 begin
1123 Raise_Program_Error_Msg (File, Line, Rmsg_14'Address);
1124 end Rcheck_14;
1125
1126 procedure Rcheck_15 (File : System.Address; Line : Integer) is
1127 begin
1128 Raise_Program_Error_Msg (File, Line, Rmsg_15'Address);
1129 end Rcheck_15;
1130
1131 procedure Rcheck_16 (File : System.Address; Line : Integer) is
1132 begin
1133 Raise_Program_Error_Msg (File, Line, Rmsg_16'Address);
1134 end Rcheck_16;
1135
1136 procedure Rcheck_17 (File : System.Address; Line : Integer) is
1137 begin
1138 Raise_Program_Error_Msg (File, Line, Rmsg_17'Address);
1139 end Rcheck_17;
1140
1141 procedure Rcheck_18 (File : System.Address; Line : Integer) is
1142 begin
1143 Raise_Program_Error_Msg (File, Line, Rmsg_18'Address);
1144 end Rcheck_18;
1145
1146 procedure Rcheck_19 (File : System.Address; Line : Integer) is
1147 begin
1148 Raise_Program_Error_Msg (File, Line, Rmsg_19'Address);
1149 end Rcheck_19;
1150
1151 procedure Rcheck_20 (File : System.Address; Line : Integer) is
1152 begin
1153 Raise_Program_Error_Msg (File, Line, Rmsg_20'Address);
1154 end Rcheck_20;
1155
1156 procedure Rcheck_21 (File : System.Address; Line : Integer) is
1157 begin
1158 Raise_Program_Error_Msg (File, Line, Rmsg_21'Address);
1159 end Rcheck_21;
1160
1161 procedure Rcheck_23 (File : System.Address; Line : Integer) is
1162 begin
1163 Raise_Program_Error_Msg (File, Line, Rmsg_23'Address);
1164 end Rcheck_23;
1165
1166 procedure Rcheck_24 (File : System.Address; Line : Integer) is
1167 begin
1168 Raise_Program_Error_Msg (File, Line, Rmsg_24'Address);
1169 end Rcheck_24;
1170
1171 procedure Rcheck_25 (File : System.Address; Line : Integer) is
1172 begin
1173 Raise_Program_Error_Msg (File, Line, Rmsg_25'Address);
1174 end Rcheck_25;
1175
1176 procedure Rcheck_26 (File : System.Address; Line : Integer) is
1177 begin
1178 Raise_Program_Error_Msg (File, Line, Rmsg_26'Address);
1179 end Rcheck_26;
1180
1181 procedure Rcheck_27 (File : System.Address; Line : Integer) is
1182 begin
1183 Raise_Program_Error_Msg (File, Line, Rmsg_27'Address);
1184 end Rcheck_27;
1185
1186 procedure Rcheck_28 (File : System.Address; Line : Integer) is
1187 begin
1188 Raise_Program_Error_Msg (File, Line, Rmsg_28'Address);
1189 end Rcheck_28;
1190
1191 procedure Rcheck_29 (File : System.Address; Line : Integer) is
1192 begin
1193 Raise_Program_Error_Msg (File, Line, Rmsg_29'Address);
1194 end Rcheck_29;
1195
1196 procedure Rcheck_30 (File : System.Address; Line : Integer) is
1197 begin
1198 Raise_Program_Error_Msg (File, Line, Rmsg_30'Address);
1199 end Rcheck_30;
1200
1201 procedure Rcheck_31 (File : System.Address; Line : Integer) is
1202 begin
1203 Raise_Storage_Error_Msg (File, Line, Rmsg_31'Address);
1204 end Rcheck_31;
1205
1206 procedure Rcheck_32 (File : System.Address; Line : Integer) is
1207 begin
1208 Raise_Storage_Error_Msg (File, Line, Rmsg_32'Address);
1209 end Rcheck_32;
1210
1211 procedure Rcheck_33 (File : System.Address; Line : Integer) is
1212 begin
1213 Raise_Storage_Error_Msg (File, Line, Rmsg_33'Address);
1214 end Rcheck_33;
1215
1216 procedure Rcheck_34 (File : System.Address; Line : Integer) is
1217 begin
1218 Raise_Storage_Error_Msg (File, Line, Rmsg_34'Address);
1219 end Rcheck_34;
1220
1221 procedure Rcheck_00_Ext (File : System.Address; Line, Column : Integer) is
1222 begin
1223 Raise_Constraint_Error_Msg (File, Line, Column, Rmsg_00'Address);
1224 end Rcheck_00_Ext;
1225
1226 procedure Rcheck_05_Ext
1227 (File : System.Address; Line, Column, Index, First, Last : Integer)
1228 is
1229 Msg : constant String :=
1230 Rmsg_05 (Rmsg_05'First .. Rmsg_05'Last - 1) & ASCII.LF &
1231 "index " & Image (Index) & " not in " & Image (First) &
1232 ".." & Image (Last) & ASCII.NUL;
1233 begin
1234 Raise_Constraint_Error_Msg (File, Line, Column, Msg'Address);
1235 end Rcheck_05_Ext;
1236
1237 procedure Rcheck_06_Ext
1238 (File : System.Address; Line, Column, Index, First, Last : Integer)
1239 is
1240 Msg : constant String :=
1241 Rmsg_06 (Rmsg_06'First .. Rmsg_06'Last - 1) & ASCII.LF &
1242 "value " & Image (Index) & " not in " & Image (First) &
1243 ".." & Image (Last) & ASCII.NUL;
1244 begin
1245 Raise_Constraint_Error_Msg (File, Line, Column, Msg'Address);
1246 end Rcheck_06_Ext;
1247
1248 procedure Rcheck_12_Ext
1249 (File : System.Address; Line, Column, Index, First, Last : Integer)
1250 is
1251 Msg : constant String :=
1252 Rmsg_12 (Rmsg_12'First .. Rmsg_12'Last - 1) & ASCII.LF &
1253 "value " & Image (Index) & " not in " & Image (First) &
1254 ".." & Image (Last) & ASCII.NUL;
1255 begin
1256 Raise_Constraint_Error_Msg (File, Line, Column, Msg'Address);
1257 end Rcheck_12_Ext;
1258
1259 ---------------
1260 -- Rcheck_22 --
1261 ---------------
1262
1263 procedure Rcheck_22 (File : System.Address; Line : Integer) is
1264 E : constant Exception_Id := Program_Error_Def'Access;
1265
1266 begin
1267 -- This is "finalize/adjust raised exception". This subprogram is always
1268 -- called with abort deferred, unlike all other Rcheck_* routines, it
1269 -- needs to call Raise_Exception_No_Defer.
1270
1271 -- This is consistent with Raise_From_Controlled_Operation
1272
1273 Exception_Data.Set_Exception_C_Msg (E, File, Line, 0, Rmsg_22'Address);
1274 Raise_Current_Excep (E);
1275 end Rcheck_22;
1276
1277 -------------
1278 -- Reraise --
1279 -------------
1280
1281 procedure Reraise is
1282 Excep : constant EOA := Get_Current_Excep.all;
1283 begin
1284 if not ZCX_By_Default then
1285 Abort_Defer.all;
1286 end if;
1287 Raise_Current_Excep (Excep.Id);
1288 end Reraise;
1289
1290 --------------------------------------
1291 -- Reraise_Library_Exception_If_Any --
1292 --------------------------------------
1293
1294 procedure Reraise_Library_Exception_If_Any is
1295 LE : Exception_Occurrence;
1296 begin
1297 if Library_Exception_Set then
1298 LE := Library_Exception;
1299 if LE.Id = Null_Id then
1300 Raise_Exception_No_Defer
1301 (E => Program_Error'Identity,
1302 Message => "finalize/adjust raised exception");
1303 else
1304 Raise_From_Controlled_Operation (LE);
1305 end if;
1306 end if;
1307 end Reraise_Library_Exception_If_Any;
1308
1309 ------------------------
1310 -- Reraise_Occurrence --
1311 ------------------------
1312
1313 procedure Reraise_Occurrence (X : Exception_Occurrence) is
1314 begin
1315 if X.Id /= null then
1316 if not ZCX_By_Default then
1317 Abort_Defer.all;
1318 end if;
1319
1320 Save_Occurrence (Get_Current_Excep.all.all, X);
1321 Raise_Current_Excep (X.Id);
1322 end if;
1323 end Reraise_Occurrence;
1324
1325 -------------------------------
1326 -- Reraise_Occurrence_Always --
1327 -------------------------------
1328
1329 procedure Reraise_Occurrence_Always (X : Exception_Occurrence) is
1330 begin
1331 if not ZCX_By_Default then
1332 Abort_Defer.all;
1333 end if;
1334
1335 Save_Occurrence (Get_Current_Excep.all.all, X);
1336 Raise_Current_Excep (X.Id);
1337 end Reraise_Occurrence_Always;
1338
1339 ---------------------------------
1340 -- Reraise_Occurrence_No_Defer --
1341 ---------------------------------
1342
1343 procedure Reraise_Occurrence_No_Defer (X : Exception_Occurrence) is
1344 begin
1345 Save_Occurrence (Get_Current_Excep.all.all, X);
1346 Raise_Current_Excep (X.Id);
1347 end Reraise_Occurrence_No_Defer;
1348
1349 ---------------------
1350 -- Save_Occurrence --
1351 ---------------------
1352
1353 procedure Save_Occurrence
1354 (Target : out Exception_Occurrence;
1355 Source : Exception_Occurrence)
1356 is
1357 begin
1358 Target.Id := Source.Id;
1359 Target.Msg_Length := Source.Msg_Length;
1360 Target.Num_Tracebacks := Source.Num_Tracebacks;
1361 Target.Pid := Source.Pid;
1362
1363 Target.Msg (1 .. Target.Msg_Length) :=
1364 Source.Msg (1 .. Target.Msg_Length);
1365
1366 Target.Tracebacks (1 .. Target.Num_Tracebacks) :=
1367 Source.Tracebacks (1 .. Target.Num_Tracebacks);
1368 end Save_Occurrence;
1369
1370 function Save_Occurrence (Source : Exception_Occurrence) return EOA is
1371 Target : constant EOA := new Exception_Occurrence;
1372 begin
1373 Save_Occurrence (Target.all, Source);
1374 return Target;
1375 end Save_Occurrence;
1376
1377 -------------------
1378 -- String_To_EId --
1379 -------------------
1380
1381 function String_To_EId (S : String) return Exception_Id
1382 renames Stream_Attributes.String_To_EId;
1383
1384 ------------------
1385 -- String_To_EO --
1386 ------------------
1387
1388 function String_To_EO (S : String) return Exception_Occurrence
1389 renames Stream_Attributes.String_To_EO;
1390
1391 ---------------
1392 -- To_Stderr --
1393 ---------------
1394
1395 procedure To_Stderr (C : Character) is
1396 type int is new Integer;
1397
1398 procedure put_char_stderr (C : int);
1399 pragma Import (C, put_char_stderr, "put_char_stderr");
1400
1401 begin
1402 put_char_stderr (Character'Pos (C));
1403 end To_Stderr;
1404
1405 procedure To_Stderr (S : String) is
1406 begin
1407 for J in S'Range loop
1408 if S (J) /= ASCII.CR then
1409 To_Stderr (S (J));
1410 end if;
1411 end loop;
1412 end To_Stderr;
1413
1414 -------------------------
1415 -- Transfer_Occurrence --
1416 -------------------------
1417
1418 procedure Transfer_Occurrence
1419 (Target : Exception_Occurrence_Access;
1420 Source : Exception_Occurrence)
1421 is
1422 begin
1423 Save_Occurrence (Target.all, Source);
1424 end Transfer_Occurrence;
1425
1426 ------------------------
1427 -- Triggered_By_Abort --
1428 ------------------------
1429
1430 function Triggered_By_Abort return Boolean is
1431 Ex : constant Exception_Occurrence_Access := Get_Current_Excep.all;
1432
1433 begin
1434 return Ex /= null
1435 and then Exception_Identity (Ex.all) = Standard'Abort_Signal'Identity;
1436 end Triggered_By_Abort;
1437
1438 -------------------------
1439 -- Wide_Exception_Name --
1440 -------------------------
1441
1442 WC_Encoding : Character;
1443 pragma Import (C, WC_Encoding, "__gl_wc_encoding");
1444 -- Encoding method for source, as exported by binder
1445
1446 function Wide_Exception_Name
1447 (Id : Exception_Id) return Wide_String
1448 is
1449 S : constant String := Exception_Name (Id);
1450 W : Wide_String (1 .. S'Length);
1451 L : Natural;
1452 begin
1453 String_To_Wide_String
1454 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1455 return W (1 .. L);
1456 end Wide_Exception_Name;
1457
1458 function Wide_Exception_Name
1459 (X : Exception_Occurrence) return Wide_String
1460 is
1461 S : constant String := Exception_Name (X);
1462 W : Wide_String (1 .. S'Length);
1463 L : Natural;
1464 begin
1465 String_To_Wide_String
1466 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1467 return W (1 .. L);
1468 end Wide_Exception_Name;
1469
1470 ----------------------------
1471 -- Wide_Wide_Exception_Name --
1472 -----------------------------
1473
1474 function Wide_Wide_Exception_Name
1475 (Id : Exception_Id) return Wide_Wide_String
1476 is
1477 S : constant String := Exception_Name (Id);
1478 W : Wide_Wide_String (1 .. S'Length);
1479 L : Natural;
1480 begin
1481 String_To_Wide_Wide_String
1482 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1483 return W (1 .. L);
1484 end Wide_Wide_Exception_Name;
1485
1486 function Wide_Wide_Exception_Name
1487 (X : Exception_Occurrence) return Wide_Wide_String
1488 is
1489 S : constant String := Exception_Name (X);
1490 W : Wide_Wide_String (1 .. S'Length);
1491 L : Natural;
1492 begin
1493 String_To_Wide_Wide_String
1494 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1495 return W (1 .. L);
1496 end Wide_Wide_Exception_Name;
1497
1498 --------------------------
1499 -- Code_Address_For_ZZZ --
1500 --------------------------
1501
1502 -- This function gives us the end of the PC range for addresses
1503 -- within the exception unit itself. We hope that gigi/gcc keeps all the
1504 -- procedures in their original order!
1505
1506 function Code_Address_For_ZZZ return System.Address is
1507 begin
1508 <<Start_Of_ZZZ>>
1509 return Start_Of_ZZZ'Address;
1510 end Code_Address_For_ZZZ;
1511
1512 end Ada.Exceptions;