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Merge from mainline
[official-gcc.git] / gcc / ada / a-except-2005.adb
blob7325723d7f84b6ba4ad0424a273ccf57a2540a0c
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) 1992-2006, 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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
21 -- --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
28 -- --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
31 -- --
32 ------------------------------------------------------------------------------
33
34 -- This version is used for all Ada 2005 builds. It differs from a-except.ads
35 -- only with respect to the addition of Wide_[Wide]Exception_Name functions.
36
37 -- The reason for this splitting off of a separate version is that bootstrap
38 -- compilers often will be used that do not support Ada 2005 features, and
39 -- Ada.Exceptions is part of the compiler sources.
40
41 -- The base version of this unit Ada.Exceptions omits the Wide version of
42 -- Exception_Name and is used to build the compiler and other basic tools.
43
44 pragma Polling (Off);
45 -- We must turn polling off for this unit, because otherwise we get
46 -- elaboration circularities with System.Exception_Tables.
47
48 with System; use System;
49 with System.Standard_Library; use System.Standard_Library;
50 with System.Soft_Links; use System.Soft_Links;
51 with System.WCh_Con; use System.WCh_Con;
52 with System.WCh_StW; use System.WCh_StW;
53
54 package body Ada.Exceptions is
55
56 pragma Suppress (All_Checks);
57 -- We definitely do not want exceptions occurring within this unit, or
58 -- we are in big trouble. If an exceptional situation does occur, better
59 -- that it not be raised, since raising it can cause confusing chaos.
60
61 -----------------------
62 -- Local Subprograms --
63 -----------------------
64
65 -- Note: the exported subprograms in this package body are called directly
66 -- from C clients using the given external name, even though they are not
67 -- technically visible in the Ada sense.
68
69 function Code_Address_For_AAA return System.Address;
70 function Code_Address_For_ZZZ return System.Address;
71 -- Return start and end of procedures in this package
72 --
73 -- These procedures are used to provide exclusion bounds in
74 -- calls to Call_Chain at exception raise points from this unit. The
75 -- purpose is to arrange for the exception tracebacks not to include
76 -- frames from routines involved in the raise process, as these are
77 -- meaningless from the user's standpoint.
78 --
79 -- For these bounds to be meaningful, we need to ensure that the object
80 -- code for the routines involved in processing a raise is located after
81 -- the object code Code_Address_For_AAA and before the object code
82 -- Code_Address_For_ZZZ. This will indeed be the case as long as the
83 -- following rules are respected:
84 --
85 -- 1) The bodies of the subprograms involved in processing a raise
86 -- are located after the body of Code_Address_For_AAA and before the
87 -- body of Code_Address_For_ZZZ.
88 --
89 -- 2) No pragma Inline applies to any of these subprograms, as this
90 -- could delay the corresponding assembly output until the end of
91 -- the unit.
92
93 procedure Call_Chain (Excep : EOA);
94 -- Store up to Max_Tracebacks in Excep, corresponding to the current
95 -- call chain.
96
97 procedure To_Stderr (S : String);
98 pragma Export (Ada, To_Stderr, "__gnat_to_stderr");
99 -- Little routine to output string to stderr that is also used
100 -- in the tasking run time.
101
102 procedure To_Stderr (C : Character);
103 pragma Inline (To_Stderr);
104 pragma Export (Ada, To_Stderr, "__gnat_to_stderr_char");
105 -- Little routine to output a character to stderr, used by some of
106 -- the separate units below.
107
108 package Exception_Data is
109
110 ---------------------------------
111 -- Exception messages routines --
112 ---------------------------------
113
114 procedure Set_Exception_C_Msg
115 (Id : Exception_Id;
116 Msg1 : System.Address;
117 Line : Integer := 0;
118 Msg2 : System.Address := System.Null_Address);
119 -- This routine is called to setup the exception referenced by the
120 -- Current_Excep field in the TSD to contain the indicated Id value
121 -- and message. Msg1 is a null terminated string which is generated
122 -- as the exception message. If line is non-zero, then a colon and
123 -- the decimal representation of this integer is appended to the
124 -- message. When Msg2 is non-null, a space and this additional null
125 -- terminated string is added to the message.
126
127 procedure Set_Exception_Msg
128 (Id : Exception_Id;
129 Message : String);
130 -- This routine is called to setup the exception referenced by the
131 -- Current_Excep field in the TSD to contain the indicated Id value
132 -- and message. Message is a string which is generated as the
133 -- exception message.
134
135 --------------------------------------
136 -- Exception information subprogram --
137 --------------------------------------
138
139 function Exception_Information (X : Exception_Occurrence) return String;
140 -- The format of the exception information is as follows:
141 --
142 -- Exception_Name: <exception name> (as in Exception_Name)
143 -- Message: <message> (only if Exception_Message is empty)
144 -- PID=nnnn (only if != 0)
145 -- Call stack traceback locations: (only if at least one location)
146 -- <0xyyyyyyyy 0xyyyyyyyy ...> (is recorded)
147 --
148 -- The lines are separated by a ASCII.LF character.
149 -- The nnnn is the partition Id given as decimal digits.
150 -- The 0x... line represents traceback program counter locations, in
151 -- execution order with the first one being the exception location. It
152 -- is present only
153 --
154 -- The Exception_Name and Message lines are omitted in the abort
155 -- signal case, since this is not really an exception.
156
157 -- !! If the format of the generated string is changed, please note
158 -- !! that an equivalent modification to the routine String_To_EO must
159 -- !! be made to preserve proper functioning of the stream attributes.
160
161 ---------------------------------------
162 -- Exception backtracing subprograms --
163 ---------------------------------------
164
165 -- What is automatically output when exception tracing is on is the
166 -- usual exception information with the call chain backtrace possibly
167 -- tailored by a backtrace decorator. Modifying Exception_Information
168 -- itself is not a good idea because the decorated output is completely
169 -- out of control and would break all our code related to the streaming
170 -- of exceptions. We then provide an alternative function to compute
171 -- the possibly tailored output, which is equivalent if no decorator is
172 -- currently set:
173
174 function Tailored_Exception_Information
175 (X : Exception_Occurrence) return String;
176 -- Exception information to be output in the case of automatic tracing
177 -- requested through GNAT.Exception_Traces.
178 --
179 -- This is the same as Exception_Information if no backtrace decorator
180 -- is currently in place. Otherwise, this is Exception_Information with
181 -- the call chain raw addresses replaced by the result of a call to the
182 -- current decorator provided with the call chain addresses.
183
184 pragma Export
185 (Ada, Tailored_Exception_Information,
186 "__gnat_tailored_exception_information");
187 -- This is currently used by System.Tasking.Stages
188
189 end Exception_Data;
190
191 package Exception_Traces is
192
193 use Exception_Data;
194 -- Imports Tailored_Exception_Information
195
196 ----------------------------------------------
197 -- Run-Time Exception Notification Routines --
198 ----------------------------------------------
199
200 -- These subprograms provide a common run-time interface to trigger the
201 -- actions required when an exception is about to be propagated (e.g.
202 -- user specified actions or output of exception information). They are
203 -- exported to be usable by the Ada exception handling personality
204 -- routine when the GCC 3 mechanism is used.
205
206 procedure Notify_Handled_Exception;
207 pragma Export
208 (C, Notify_Handled_Exception, "__gnat_notify_handled_exception");
209 -- This routine is called for a handled occurrence is about to be
210 -- propagated.
211
212 procedure Notify_Unhandled_Exception;
213 pragma Export
214 (C, Notify_Unhandled_Exception, "__gnat_notify_unhandled_exception");
215 -- This routine is called when an unhandled occurrence is about to be
216 -- propagated.
217
218 procedure Unhandled_Exception_Terminate;
219 pragma No_Return (Unhandled_Exception_Terminate);
220 -- This procedure is called to terminate execution following an
221 -- unhandled exception. The exception information, including
222 -- traceback if available is output, and execution is then
223 -- terminated. Note that at the point where this routine is
224 -- called, the stack has typically been destroyed.
225
226 end Exception_Traces;
227
228 package Exception_Propagation is
229
230 use Exception_Traces;
231 -- Imports Notify_Unhandled_Exception and
232 -- Unhandled_Exception_Terminate
233
234 ------------------------------------
235 -- Exception propagation routines --
236 ------------------------------------
237
238 procedure Setup_Exception
239 (Excep : EOA;
240 Current : EOA;
241 Reraised : Boolean := False);
242 -- Perform the necessary operations to prepare the propagation of Excep
243 -- in a task where Current is the current occurrence. Excep is assumed
244 -- to be a valid (non null) pointer.
245 --
246 -- This should be called before any (re-)setting of the current
247 -- occurrence. Any such (re-)setting shall take care *not* to clobber
248 -- the Private_Data component.
249 --
250 -- Having Current provided as an argument (instead of retrieving it via
251 -- Get_Current_Excep internally) is required to allow one task to setup
252 -- an exception for another task, which is used by Transfer_Occurrence.
253
254 procedure Propagate_Exception
255 (E : Exception_Id;
256 From_Signal_Handler : Boolean);
257 pragma No_Return (Propagate_Exception);
258 -- This procedure propagates the exception represented by the occurrence
259 -- referenced by Current_Excep in the TSD for the current task.
260
261 end Exception_Propagation;
262
263 package Stream_Attributes is
264
265 --------------------------------
266 -- Stream attributes routines --
267 --------------------------------
268
269 function EId_To_String (X : Exception_Id) return String;
270 function String_To_EId (S : String) return Exception_Id;
271 -- Functions for implementing Exception_Id stream attributes
272
273 function EO_To_String (X : Exception_Occurrence) return String;
274 function String_To_EO (S : String) return Exception_Occurrence;
275 -- Functions for implementing Exception_Occurrence stream
276 -- attributes
277
278 end Stream_Attributes;
279
280 procedure Raise_Current_Excep (E : Exception_Id);
281 pragma No_Return (Raise_Current_Excep);
282 pragma Export (C, Raise_Current_Excep, "__gnat_raise_nodefer_with_msg");
283 -- This is a simple wrapper to Exception_Propagation.Propagate_Exception
284 -- setting the From_Signal_Handler argument to False.
285 --
286 -- This external name for Raise_Current_Excep is historical, and probably
287 -- should be changed but for now we keep it, because gdb and gigi know
288 -- about it.
289
290 procedure Raise_Exception_No_Defer
291 (E : Exception_Id; Message : String := "");
292 pragma Export
293 (Ada, Raise_Exception_No_Defer,
294 "ada__exceptions__raise_exception_no_defer");
295 pragma No_Return (Raise_Exception_No_Defer);
296 -- Similar to Raise_Exception, but with no abort deferral
297
298 procedure Raise_With_Msg (E : Exception_Id);
299 pragma No_Return (Raise_With_Msg);
300 pragma Export (C, Raise_With_Msg, "__gnat_raise_with_msg");
301 -- Raises an exception with given exception id value. A message
302 -- is associated with the raise, and has already been stored in the
303 -- exception occurrence referenced by the Current_Excep in the TSD.
304 -- Abort is deferred before the raise call.
305
306 procedure Raise_With_Location_And_Msg
307 (E : Exception_Id;
308 F : System.Address;
309 L : Integer;
310 M : System.Address := System.Null_Address);
311 pragma No_Return (Raise_With_Location_And_Msg);
312 -- Raise an exception with given exception id value. A filename and line
313 -- number is associated with the raise and is stored in the exception
314 -- occurrence and in addition a string message M is appended to
315 -- this (if M is not null).
316
317 procedure Raise_Constraint_Error
318 (File : System.Address;
319 Line : Integer);
320 pragma No_Return (Raise_Constraint_Error);
321 pragma Export
322 (C, Raise_Constraint_Error, "__gnat_raise_constraint_error");
323 -- Raise constraint error with file:line information
324
325 procedure Raise_Constraint_Error_Msg
326 (File : System.Address;
327 Line : Integer;
328 Msg : System.Address);
329 pragma No_Return (Raise_Constraint_Error_Msg);
330 pragma Export
331 (C, Raise_Constraint_Error_Msg, "__gnat_raise_constraint_error_msg");
332 -- Raise constraint error with file:line + msg information
333
334 procedure Raise_Program_Error
335 (File : System.Address;
336 Line : Integer);
337 pragma No_Return (Raise_Program_Error);
338 pragma Export
339 (C, Raise_Program_Error, "__gnat_raise_program_error");
340 -- Raise program error with file:line information
341
342 procedure Raise_Program_Error_Msg
343 (File : System.Address;
344 Line : Integer;
345 Msg : System.Address);
346 pragma No_Return (Raise_Program_Error_Msg);
347 pragma Export
348 (C, Raise_Program_Error_Msg, "__gnat_raise_program_error_msg");
349 -- Raise program error with file:line + msg information
350
351 procedure Raise_Storage_Error
352 (File : System.Address;
353 Line : Integer);
354 pragma No_Return (Raise_Storage_Error);
355 pragma Export
356 (C, Raise_Storage_Error, "__gnat_raise_storage_error");
357 -- Raise storage error with file:line information
358
359 procedure Raise_Storage_Error_Msg
360 (File : System.Address;
361 Line : Integer;
362 Msg : System.Address);
363 pragma No_Return (Raise_Storage_Error_Msg);
364 pragma Export
365 (C, Raise_Storage_Error_Msg, "__gnat_raise_storage_error_msg");
366 -- Raise storage error with file:line + reason msg information
367
368 -- The exception raising process and the automatic tracing mechanism rely
369 -- on some careful use of flags attached to the exception occurrence. The
370 -- graph below illustrates the relations between the Raise_ subprograms
371 -- and identifies the points where basic flags such as Exception_Raised
372 -- are initialized.
373 --
374 -- (i) signs indicate the flags initialization points. R stands for Raise,
375 -- W for With, and E for Exception.
376 --
377 -- R_No_Msg R_E R_Pe R_Ce R_Se
378 -- | | | | |
379 -- +--+ +--+ +---+ | +---+
380 -- | | | | |
381 -- R_E_No_Defer(i) R_W_Msg(i) R_W_Loc
382 -- | | | |
383 -- +------------+ | +-----------+ +--+
384 -- | | | |
385 -- | | | Set_E_C_Msg(i)
386 -- | | |
387 -- Raise_Current_Excep
388
389 procedure Reraise;
390 pragma No_Return (Reraise);
391 pragma Export (C, Reraise, "__gnat_reraise");
392 -- Reraises the exception referenced by the Current_Excep field of
393 -- the TSD (all fields of this exception occurrence are set). Abort
394 -- is deferred before the reraise operation.
395
396 -- Save_Occurrence variations: As the management of the private data
397 -- attached to occurrences is delicate, wether or not pointers to such
398 -- data has to be copied in various situations is better made explicit.
399 -- The following procedures provide an internal interface to help making
400 -- this explicit.
401
402 procedure Save_Occurrence_No_Private
403 (Target : out Exception_Occurrence;
404 Source : Exception_Occurrence);
405 -- Copy all the components of Source to Target, except the
406 -- Private_Data pointer.
407
408 procedure Transfer_Occurrence
409 (Target : Exception_Occurrence_Access;
410 Source : Exception_Occurrence);
411 pragma Export (C, Transfer_Occurrence, "__gnat_transfer_occurrence");
412 -- Called from System.Tasking.RendezVous.Exceptional_Complete_RendezVous
413 -- to setup Target from Source as an exception to be propagated in the
414 -- caller task. Target is expected to be a pointer to the fixed TSD
415 -- occurrence for this task.
416
417 -----------------------------
418 -- Run-Time Check Routines --
419 -----------------------------
420
421 -- These routines are called from the runtime to raise a specific
422 -- exception with a reason message attached. The parameters are
423 -- the file name and line number in each case. The names are keyed
424 -- to the codes defined in Types.ads and a-types.h (for example,
425 -- the name Rcheck_05 refers to the Reason whose Pos code is 5).
426
427 procedure Rcheck_00 (File : System.Address; Line : Integer);
428 procedure Rcheck_01 (File : System.Address; Line : Integer);
429 procedure Rcheck_02 (File : System.Address; Line : Integer);
430 procedure Rcheck_03 (File : System.Address; Line : Integer);
431 procedure Rcheck_04 (File : System.Address; Line : Integer);
432 procedure Rcheck_05 (File : System.Address; Line : Integer);
433 procedure Rcheck_06 (File : System.Address; Line : Integer);
434 procedure Rcheck_07 (File : System.Address; Line : Integer);
435 procedure Rcheck_08 (File : System.Address; Line : Integer);
436 procedure Rcheck_09 (File : System.Address; Line : Integer);
437 procedure Rcheck_10 (File : System.Address; Line : Integer);
438 procedure Rcheck_11 (File : System.Address; Line : Integer);
439 procedure Rcheck_12 (File : System.Address; Line : Integer);
440 procedure Rcheck_13 (File : System.Address; Line : Integer);
441 procedure Rcheck_14 (File : System.Address; Line : Integer);
442 procedure Rcheck_15 (File : System.Address; Line : Integer);
443 procedure Rcheck_16 (File : System.Address; Line : Integer);
444 procedure Rcheck_17 (File : System.Address; Line : Integer);
445 procedure Rcheck_18 (File : System.Address; Line : Integer);
446 procedure Rcheck_19 (File : System.Address; Line : Integer);
447 procedure Rcheck_20 (File : System.Address; Line : Integer);
448 procedure Rcheck_21 (File : System.Address; Line : Integer);
449 procedure Rcheck_22 (File : System.Address; Line : Integer);
450 procedure Rcheck_23 (File : System.Address; Line : Integer);
451 procedure Rcheck_24 (File : System.Address; Line : Integer);
452 procedure Rcheck_25 (File : System.Address; Line : Integer);
453 procedure Rcheck_26 (File : System.Address; Line : Integer);
454 procedure Rcheck_27 (File : System.Address; Line : Integer);
455 procedure Rcheck_28 (File : System.Address; Line : Integer);
456 procedure Rcheck_29 (File : System.Address; Line : Integer);
457 procedure Rcheck_30 (File : System.Address; Line : Integer);
458 procedure Rcheck_31 (File : System.Address; Line : Integer);
459 procedure Rcheck_32 (File : System.Address; Line : Integer);
460
461 pragma Export (C, Rcheck_00, "__gnat_rcheck_00");
462 pragma Export (C, Rcheck_01, "__gnat_rcheck_01");
463 pragma Export (C, Rcheck_02, "__gnat_rcheck_02");
464 pragma Export (C, Rcheck_03, "__gnat_rcheck_03");
465 pragma Export (C, Rcheck_04, "__gnat_rcheck_04");
466 pragma Export (C, Rcheck_05, "__gnat_rcheck_05");
467 pragma Export (C, Rcheck_06, "__gnat_rcheck_06");
468 pragma Export (C, Rcheck_07, "__gnat_rcheck_07");
469 pragma Export (C, Rcheck_08, "__gnat_rcheck_08");
470 pragma Export (C, Rcheck_09, "__gnat_rcheck_09");
471 pragma Export (C, Rcheck_10, "__gnat_rcheck_10");
472 pragma Export (C, Rcheck_11, "__gnat_rcheck_11");
473 pragma Export (C, Rcheck_12, "__gnat_rcheck_12");
474 pragma Export (C, Rcheck_13, "__gnat_rcheck_13");
475 pragma Export (C, Rcheck_14, "__gnat_rcheck_14");
476 pragma Export (C, Rcheck_15, "__gnat_rcheck_15");
477 pragma Export (C, Rcheck_16, "__gnat_rcheck_16");
478 pragma Export (C, Rcheck_17, "__gnat_rcheck_17");
479 pragma Export (C, Rcheck_18, "__gnat_rcheck_18");
480 pragma Export (C, Rcheck_19, "__gnat_rcheck_19");
481 pragma Export (C, Rcheck_20, "__gnat_rcheck_20");
482 pragma Export (C, Rcheck_21, "__gnat_rcheck_21");
483 pragma Export (C, Rcheck_22, "__gnat_rcheck_22");
484 pragma Export (C, Rcheck_23, "__gnat_rcheck_23");
485 pragma Export (C, Rcheck_24, "__gnat_rcheck_24");
486 pragma Export (C, Rcheck_25, "__gnat_rcheck_25");
487 pragma Export (C, Rcheck_26, "__gnat_rcheck_26");
488 pragma Export (C, Rcheck_27, "__gnat_rcheck_27");
489 pragma Export (C, Rcheck_28, "__gnat_rcheck_28");
490 pragma Export (C, Rcheck_29, "__gnat_rcheck_29");
491 pragma Export (C, Rcheck_30, "__gnat_rcheck_30");
492 pragma Export (C, Rcheck_31, "__gnat_rcheck_31");
493 pragma Export (C, Rcheck_32, "__gnat_rcheck_32");
494
495 -- None of these procedures ever returns (they raise an exception!). By
496 -- using pragma No_Return, we ensure that any junk code after the call,
497 -- such as normal return epilog stuff, can be eliminated).
498
499 pragma No_Return (Rcheck_00);
500 pragma No_Return (Rcheck_01);
501 pragma No_Return (Rcheck_02);
502 pragma No_Return (Rcheck_03);
503 pragma No_Return (Rcheck_04);
504 pragma No_Return (Rcheck_05);
505 pragma No_Return (Rcheck_06);
506 pragma No_Return (Rcheck_07);
507 pragma No_Return (Rcheck_08);
508 pragma No_Return (Rcheck_09);
509 pragma No_Return (Rcheck_10);
510 pragma No_Return (Rcheck_11);
511 pragma No_Return (Rcheck_12);
512 pragma No_Return (Rcheck_13);
513 pragma No_Return (Rcheck_14);
514 pragma No_Return (Rcheck_15);
515 pragma No_Return (Rcheck_16);
516 pragma No_Return (Rcheck_17);
517 pragma No_Return (Rcheck_18);
518 pragma No_Return (Rcheck_19);
519 pragma No_Return (Rcheck_20);
520 pragma No_Return (Rcheck_21);
521 pragma No_Return (Rcheck_22);
522 pragma No_Return (Rcheck_23);
523 pragma No_Return (Rcheck_24);
524 pragma No_Return (Rcheck_25);
525 pragma No_Return (Rcheck_26);
526 pragma No_Return (Rcheck_27);
527 pragma No_Return (Rcheck_28);
528 pragma No_Return (Rcheck_29);
529 pragma No_Return (Rcheck_30);
530 pragma No_Return (Rcheck_32);
531
532 ---------------------------------------------
533 -- Reason Strings for Run-Time Check Calls --
534 ---------------------------------------------
535
536 -- These strings are null-terminated and are used by Rcheck_nn. The
537 -- strings correspond to the definitions for Types.RT_Exception_Code.
538
539 use ASCII;
540
541 Rmsg_00 : constant String := "access check failed" & NUL;
542 Rmsg_01 : constant String := "access parameter is null" & NUL;
543 Rmsg_02 : constant String := "discriminant check failed" & NUL;
544 Rmsg_03 : constant String := "divide by zero" & NUL;
545 Rmsg_04 : constant String := "explicit raise" & NUL;
546 Rmsg_05 : constant String := "index check failed" & NUL;
547 Rmsg_06 : constant String := "invalid data" & NUL;
548 Rmsg_07 : constant String := "length check failed" & NUL;
549 Rmsg_08 : constant String := "null Exception_Id" & NUL;
550 Rmsg_09 : constant String := "null-exclusion check failed" & NUL;
551 Rmsg_10 : constant String := "overflow check failed" & NUL;
552 Rmsg_11 : constant String := "partition check failed" & NUL;
553 Rmsg_12 : constant String := "range check failed" & NUL;
554 Rmsg_13 : constant String := "tag check failed" & NUL;
555 Rmsg_14 : constant String := "access before elaboration" & NUL;
556 Rmsg_15 : constant String := "accessibility check failed" & NUL;
557 Rmsg_16 : constant String := "all guards closed" & NUL;
558 Rmsg_17 : constant String := "duplicated entry address" & NUL;
559 Rmsg_18 : constant String := "explicit raise" & NUL;
560 Rmsg_19 : constant String := "finalize/adjust raised exception" & NUL;
561 Rmsg_20 : constant String := "implicit return with No_Return" & NUL;
562 Rmsg_21 : constant String := "misaligned address value" & NUL;
563 Rmsg_22 : constant String := "missing return" & NUL;
564 Rmsg_23 : constant String := "overlaid controlled object" & NUL;
565 Rmsg_24 : constant String := "potentially blocking operation" & NUL;
566 Rmsg_25 : constant String := "stubbed subprogram called" & NUL;
567 Rmsg_26 : constant String := "unchecked union restriction" & NUL;
568 Rmsg_27 : constant String := "illegal use of remote access-to-" &
569 "class-wide type, see RM E.4(18)" & NUL;
570 Rmsg_28 : constant String := "empty storage pool" & NUL;
571 Rmsg_29 : constant String := "explicit raise" & NUL;
572 Rmsg_30 : constant String := "infinite recursion" & NUL;
573 Rmsg_31 : constant String := "object too large" & NUL;
574 Rmsg_32 : constant String := "restriction violation" & NUL;
575
576 -----------------------
577 -- Polling Interface --
578 -----------------------
579
580 type Unsigned is mod 2 ** 32;
581
582 Counter : Unsigned := 0;
583 pragma Warnings (Off, Counter);
584 -- This counter is provided for convenience. It can be used in Poll to
585 -- perform periodic but not systematic operations.
586
587 procedure Poll is separate;
588 -- The actual polling routine is separate, so that it can easily
589 -- be replaced with a target dependent version.
590
591 --------------------------
592 -- Code_Address_For_AAA --
593 --------------------------
594
595 -- This function gives us the start of the PC range for addresses
596 -- within the exception unit itself. We hope that gigi/gcc keep all the
597 -- procedures in their original order!
598
599 function Code_Address_For_AAA return System.Address is
600 begin
601 -- We are using a label instead of merely using
602 -- Code_Address_For_AAA'Address because on some platforms the latter
603 -- does not yield the address we want, but the address of a stub or of
604 -- a descriptor instead. This is the case at least on Alpha-VMS and
605 -- PA-HPUX.
606
607 <<Start_Of_AAA>>
608 return Start_Of_AAA'Address;
609 end Code_Address_For_AAA;
610
611 ----------------
612 -- Call_Chain --
613 ----------------
614
615 procedure Call_Chain (Excep : EOA) is separate;
616 -- The actual Call_Chain routine is separate, so that it can easily
617 -- be dummied out when no exception traceback information is needed.
618
619 ------------------------------
620 -- Current_Target_Exception --
621 ------------------------------
622
623 function Current_Target_Exception return Exception_Occurrence is
624 begin
625 return Null_Occurrence;
626 end Current_Target_Exception;
627
628 -------------------
629 -- EId_To_String --
630 -------------------
631
632 function EId_To_String (X : Exception_Id) return String
633 renames Stream_Attributes.EId_To_String;
634
635 ------------------
636 -- EO_To_String --
637 ------------------
638
639 -- We use the null string to represent the null occurrence, otherwise
640 -- we output the Exception_Information string for the occurrence.
641
642 function EO_To_String (X : Exception_Occurrence) return String
643 renames Stream_Attributes.EO_To_String;
644
645 ------------------------
646 -- Exception_Identity --
647 ------------------------
648
649 function Exception_Identity
650 (X : Exception_Occurrence) return Exception_Id
651 is
652 begin
653 -- Note that the following test used to be here for the original
654 -- Ada 95 semantics, but these were modified by AI-241 to require
655 -- returning Null_Id instead of raising Constraint_Error.
656
657 -- if X.Id = Null_Id then
658 -- raise Constraint_Error;
659 -- end if;
660
661 return X.Id;
662 end Exception_Identity;
663
664 ---------------------------
665 -- Exception_Information --
666 ---------------------------
667
668 function Exception_Information (X : Exception_Occurrence) return String is
669 begin
670 if X.Id = Null_Id then
671 raise Constraint_Error;
672 end if;
673
674 return Exception_Data.Exception_Information (X);
675 end Exception_Information;
676
677 -----------------------
678 -- Exception_Message --
679 -----------------------
680
681 function Exception_Message (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 X.Msg (1 .. X.Msg_Length);
688 end Exception_Message;
689
690 --------------------
691 -- Exception_Name --
692 --------------------
693
694 function Exception_Name (Id : Exception_Id) return String is
695 begin
696 if Id = null then
697 raise Constraint_Error;
698 end if;
699
700 return To_Ptr (Id.Full_Name) (1 .. Id.Name_Length - 1);
701 end Exception_Name;
702
703 function Exception_Name (X : Exception_Occurrence) return String is
704 begin
705 return Exception_Name (X.Id);
706 end Exception_Name;
707
708 ---------------------------
709 -- Exception_Name_Simple --
710 ---------------------------
711
712 function Exception_Name_Simple (X : Exception_Occurrence) return String is
713 Name : constant String := Exception_Name (X);
714 P : Natural;
715
716 begin
717 P := Name'Length;
718 while P > 1 loop
719 exit when Name (P - 1) = '.';
720 P := P - 1;
721 end loop;
722
723 -- Return result making sure lower bound is 1
724
725 declare
726 subtype Rname is String (1 .. Name'Length - P + 1);
727 begin
728 return Rname (Name (P .. Name'Length));
729 end;
730 end Exception_Name_Simple;
731
732 --------------------
733 -- Exception_Data --
734 --------------------
735
736 package body Exception_Data is separate;
737 -- This package can be easily dummied out if we do not want the
738 -- basic support for exception messages (such as in Ada 83).
739
740 ---------------------------
741 -- Exception_Propagation --
742 ---------------------------
743
744 package body Exception_Propagation is separate;
745 -- Depending on the actual exception mechanism used (front-end or
746 -- back-end based), the implementation will differ, which is why this
747 -- package is separated.
748
749 ----------------------
750 -- Exception_Traces --
751 ----------------------
752
753 package body Exception_Traces is separate;
754 -- Depending on the underlying support for IO the implementation
755 -- will differ. Moreover we would like to dummy out this package
756 -- in case we do not want any exception tracing support. This is
757 -- why this package is separated.
758
759 -----------------------
760 -- Stream Attributes --
761 -----------------------
762
763 package body Stream_Attributes is separate;
764 -- This package can be easily dummied out if we do not want the
765 -- support for streaming Exception_Ids and Exception_Occurrences.
766
767 ----------------------------
768 -- Raise_Constraint_Error --
769 ----------------------------
770
771 procedure Raise_Constraint_Error
772 (File : System.Address;
773 Line : Integer)
774 is
775 begin
776 Raise_With_Location_And_Msg
777 (Constraint_Error_Def'Access, File, Line);
778 end Raise_Constraint_Error;
779
780 --------------------------------
781 -- Raise_Constraint_Error_Msg --
782 --------------------------------
783
784 procedure Raise_Constraint_Error_Msg
785 (File : System.Address;
786 Line : Integer;
787 Msg : System.Address)
788 is
789 begin
790 Raise_With_Location_And_Msg
791 (Constraint_Error_Def'Access, File, Line, Msg);
792 end Raise_Constraint_Error_Msg;
793
794 -------------------------
795 -- Raise_Current_Excep --
796 -------------------------
797
798 procedure Raise_Current_Excep (E : Exception_Id) is
799
800 pragma Inspection_Point (E);
801 -- This is so the debugger can reliably inspect the parameter when
802 -- inserting a breakpoint at the start of this procedure.
803
804 Id : Exception_Id := E;
805 pragma Volatile (Id);
806 pragma Warnings (Off, Id);
807 -- In order to provide support for breakpoints on unhandled exceptions,
808 -- the debugger will also need to be able to inspect the value of E from
809 -- another (inner) frame. So we need to make sure that if E is passed in
810 -- a register, its value is also spilled on stack. For this, we store
811 -- the parameter value in a local variable, and add a pragma Volatile to
812 -- make sure it is spilled. The pragma Warnings (Off) is needed because
813 -- the compiler knows that Id is not referenced and that this use of
814 -- pragma Volatile is peculiar!
815
816 begin
817 Exception_Propagation.Propagate_Exception
818 (E => E, From_Signal_Handler => False);
819 end Raise_Current_Excep;
820
821 ---------------------
822 -- Raise_Exception --
823 ---------------------
824
825 procedure Raise_Exception
826 (E : Exception_Id;
827 Message : String := "")
828 is
829 begin
830 if E /= null then
831 Exception_Data.Set_Exception_Msg (E, Message);
832 Abort_Defer.all;
833 Raise_Current_Excep (E);
834 end if;
835
836 -- Note: if E is null, then we simply return, which is correct Ada 95
837 -- semantics. If we are operating in Ada 2005 mode, then the expander
838 -- generates a raise Constraint_Error immediately following the call
839 -- to provide the required Ada 2005 semantics (see AI-329). We do it
840 -- this way to avoid having run time dependencies on the Ada version.
841
842 return;
843 end Raise_Exception;
844
845 ----------------------------
846 -- Raise_Exception_Always --
847 ----------------------------
848
849 procedure Raise_Exception_Always
850 (E : Exception_Id;
851 Message : String := "")
852 is
853 begin
854 Exception_Data.Set_Exception_Msg (E, Message);
855 Abort_Defer.all;
856 Raise_Current_Excep (E);
857 end Raise_Exception_Always;
858
859 -------------------------------
860 -- Raise_From_Signal_Handler --
861 -------------------------------
862
863 procedure Raise_From_Signal_Handler
864 (E : Exception_Id;
865 M : System.Address)
866 is
867 begin
868 Exception_Data.Set_Exception_C_Msg (E, M);
869 Abort_Defer.all;
870 Exception_Propagation.Propagate_Exception
871 (E => E, From_Signal_Handler => True);
872 end Raise_From_Signal_Handler;
873
874 -------------------------
875 -- Raise_Program_Error --
876 -------------------------
877
878 procedure Raise_Program_Error
879 (File : System.Address;
880 Line : Integer)
881 is
882 begin
883 Raise_With_Location_And_Msg
884 (Program_Error_Def'Access, File, Line);
885 end Raise_Program_Error;
886
887 -----------------------------
888 -- Raise_Program_Error_Msg --
889 -----------------------------
890
891 procedure Raise_Program_Error_Msg
892 (File : System.Address;
893 Line : Integer;
894 Msg : System.Address)
895 is
896 begin
897 Raise_With_Location_And_Msg
898 (Program_Error_Def'Access, File, Line, Msg);
899 end Raise_Program_Error_Msg;
900
901 -------------------------
902 -- Raise_Storage_Error --
903 -------------------------
904
905 procedure Raise_Storage_Error
906 (File : System.Address;
907 Line : Integer)
908 is
909 begin
910 Raise_With_Location_And_Msg
911 (Storage_Error_Def'Access, File, Line);
912 end Raise_Storage_Error;
913
914 -----------------------------
915 -- Raise_Storage_Error_Msg --
916 -----------------------------
917
918 procedure Raise_Storage_Error_Msg
919 (File : System.Address;
920 Line : Integer;
921 Msg : System.Address)
922 is
923 begin
924 Raise_With_Location_And_Msg
925 (Storage_Error_Def'Access, File, Line, Msg);
926 end Raise_Storage_Error_Msg;
927
928 ---------------------------------
929 -- Raise_With_Location_And_Msg --
930 ---------------------------------
931
932 procedure Raise_With_Location_And_Msg
933 (E : Exception_Id;
934 F : System.Address;
935 L : Integer;
936 M : System.Address := System.Null_Address)
937 is
938 begin
939 Exception_Data.Set_Exception_C_Msg (E, F, L, M);
940 Abort_Defer.all;
941 Raise_Current_Excep (E);
942 end Raise_With_Location_And_Msg;
943
944 --------------------
945 -- Raise_With_Msg --
946 --------------------
947
948 procedure Raise_With_Msg (E : Exception_Id) is
949 Excep : constant EOA := Get_Current_Excep.all;
950
951 begin
952 Exception_Propagation.Setup_Exception (Excep, Excep);
953
954 Excep.Exception_Raised := False;
955 Excep.Id := E;
956 Excep.Num_Tracebacks := 0;
957 Excep.Cleanup_Flag := False;
958 Excep.Pid := Local_Partition_ID;
959 Abort_Defer.all;
960 Raise_Current_Excep (E);
961 end Raise_With_Msg;
962
963 --------------------------------------
964 -- Calls to Run-Time Check Routines --
965 --------------------------------------
966
967 procedure Rcheck_00 (File : System.Address; Line : Integer) is
968 begin
969 Raise_Constraint_Error_Msg (File, Line, Rmsg_00'Address);
970 end Rcheck_00;
971
972 procedure Rcheck_01 (File : System.Address; Line : Integer) is
973 begin
974 Raise_Constraint_Error_Msg (File, Line, Rmsg_01'Address);
975 end Rcheck_01;
976
977 procedure Rcheck_02 (File : System.Address; Line : Integer) is
978 begin
979 Raise_Constraint_Error_Msg (File, Line, Rmsg_02'Address);
980 end Rcheck_02;
981
982 procedure Rcheck_03 (File : System.Address; Line : Integer) is
983 begin
984 Raise_Constraint_Error_Msg (File, Line, Rmsg_03'Address);
985 end Rcheck_03;
986
987 procedure Rcheck_04 (File : System.Address; Line : Integer) is
988 begin
989 Raise_Constraint_Error_Msg (File, Line, Rmsg_04'Address);
990 end Rcheck_04;
991
992 procedure Rcheck_05 (File : System.Address; Line : Integer) is
993 begin
994 Raise_Constraint_Error_Msg (File, Line, Rmsg_05'Address);
995 end Rcheck_05;
996
997 procedure Rcheck_06 (File : System.Address; Line : Integer) is
998 begin
999 Raise_Constraint_Error_Msg (File, Line, Rmsg_06'Address);
1000 end Rcheck_06;
1001
1002 procedure Rcheck_07 (File : System.Address; Line : Integer) is
1003 begin
1004 Raise_Constraint_Error_Msg (File, Line, Rmsg_07'Address);
1005 end Rcheck_07;
1006
1007 procedure Rcheck_08 (File : System.Address; Line : Integer) is
1008 begin
1009 Raise_Constraint_Error_Msg (File, Line, Rmsg_08'Address);
1010 end Rcheck_08;
1011
1012 procedure Rcheck_09 (File : System.Address; Line : Integer) is
1013 begin
1014 Raise_Constraint_Error_Msg (File, Line, Rmsg_09'Address);
1015 end Rcheck_09;
1016
1017 procedure Rcheck_10 (File : System.Address; Line : Integer) is
1018 begin
1019 Raise_Constraint_Error_Msg (File, Line, Rmsg_10'Address);
1020 end Rcheck_10;
1021
1022 procedure Rcheck_11 (File : System.Address; Line : Integer) is
1023 begin
1024 Raise_Constraint_Error_Msg (File, Line, Rmsg_11'Address);
1025 end Rcheck_11;
1026
1027 procedure Rcheck_12 (File : System.Address; Line : Integer) is
1028 begin
1029 Raise_Constraint_Error_Msg (File, Line, Rmsg_12'Address);
1030 end Rcheck_12;
1031
1032 procedure Rcheck_13 (File : System.Address; Line : Integer) is
1033 begin
1034 Raise_Constraint_Error_Msg (File, Line, Rmsg_13'Address);
1035 end Rcheck_13;
1036
1037 procedure Rcheck_14 (File : System.Address; Line : Integer) is
1038 begin
1039 Raise_Program_Error_Msg (File, Line, Rmsg_14'Address);
1040 end Rcheck_14;
1041
1042 procedure Rcheck_15 (File : System.Address; Line : Integer) is
1043 begin
1044 Raise_Program_Error_Msg (File, Line, Rmsg_15'Address);
1045 end Rcheck_15;
1046
1047 procedure Rcheck_16 (File : System.Address; Line : Integer) is
1048 begin
1049 Raise_Program_Error_Msg (File, Line, Rmsg_16'Address);
1050 end Rcheck_16;
1051
1052 procedure Rcheck_17 (File : System.Address; Line : Integer) is
1053 begin
1054 Raise_Program_Error_Msg (File, Line, Rmsg_17'Address);
1055 end Rcheck_17;
1056
1057 procedure Rcheck_18 (File : System.Address; Line : Integer) is
1058 begin
1059 Raise_Program_Error_Msg (File, Line, Rmsg_18'Address);
1060 end Rcheck_18;
1061
1062 procedure Rcheck_19 (File : System.Address; Line : Integer) is
1063 begin
1064 Raise_Program_Error_Msg (File, Line, Rmsg_19'Address);
1065 end Rcheck_19;
1066
1067 procedure Rcheck_20 (File : System.Address; Line : Integer) is
1068 begin
1069 Raise_Program_Error_Msg (File, Line, Rmsg_20'Address);
1070 end Rcheck_20;
1071
1072 procedure Rcheck_21 (File : System.Address; Line : Integer) is
1073 begin
1074 Raise_Program_Error_Msg (File, Line, Rmsg_21'Address);
1075 end Rcheck_21;
1076
1077 procedure Rcheck_22 (File : System.Address; Line : Integer) is
1078 begin
1079 Raise_Program_Error_Msg (File, Line, Rmsg_22'Address);
1080 end Rcheck_22;
1081
1082 procedure Rcheck_23 (File : System.Address; Line : Integer) is
1083 begin
1084 Raise_Program_Error_Msg (File, Line, Rmsg_23'Address);
1085 end Rcheck_23;
1086
1087 procedure Rcheck_24 (File : System.Address; Line : Integer) is
1088 begin
1089 Raise_Program_Error_Msg (File, Line, Rmsg_24'Address);
1090 end Rcheck_24;
1091
1092 procedure Rcheck_25 (File : System.Address; Line : Integer) is
1093 begin
1094 Raise_Program_Error_Msg (File, Line, Rmsg_25'Address);
1095 end Rcheck_25;
1096
1097 procedure Rcheck_26 (File : System.Address; Line : Integer) is
1098 begin
1099 Raise_Program_Error_Msg (File, Line, Rmsg_26'Address);
1100 end Rcheck_26;
1101
1102 procedure Rcheck_27 (File : System.Address; Line : Integer) is
1103 begin
1104 Raise_Program_Error_Msg (File, Line, Rmsg_27'Address);
1105 end Rcheck_27;
1106
1107 procedure Rcheck_28 (File : System.Address; Line : Integer) is
1108 begin
1109 Raise_Storage_Error_Msg (File, Line, Rmsg_28'Address);
1110 end Rcheck_28;
1111
1112 procedure Rcheck_29 (File : System.Address; Line : Integer) is
1113 begin
1114 Raise_Storage_Error_Msg (File, Line, Rmsg_29'Address);
1115 end Rcheck_29;
1116
1117 procedure Rcheck_30 (File : System.Address; Line : Integer) is
1118 begin
1119 Raise_Storage_Error_Msg (File, Line, Rmsg_30'Address);
1120 end Rcheck_30;
1121
1122 procedure Rcheck_31 (File : System.Address; Line : Integer) is
1123 begin
1124 Raise_Storage_Error_Msg (File, Line, Rmsg_31'Address);
1125 end Rcheck_31;
1126
1127 procedure Rcheck_32 (File : System.Address; Line : Integer) is
1128 begin
1129 Raise_Storage_Error_Msg (File, Line, Rmsg_32'Address);
1130 end Rcheck_32;
1131
1132 -------------
1133 -- Reraise --
1134 -------------
1135
1136 procedure Reraise is
1137 Excep : constant EOA := Get_Current_Excep.all;
1138
1139 begin
1140 Abort_Defer.all;
1141 Exception_Propagation.Setup_Exception (Excep, Excep, Reraised => True);
1142 Raise_Current_Excep (Excep.Id);
1143 end Reraise;
1144
1145 ------------------------
1146 -- Reraise_Occurrence --
1147 ------------------------
1148
1149 procedure Reraise_Occurrence (X : Exception_Occurrence) is
1150 begin
1151 if X.Id /= null then
1152 Abort_Defer.all;
1153 Exception_Propagation.Setup_Exception
1154 (X'Unrestricted_Access, Get_Current_Excep.all, Reraised => True);
1155 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1156 Raise_Current_Excep (X.Id);
1157 end if;
1158 end Reraise_Occurrence;
1159
1160 -------------------------------
1161 -- Reraise_Occurrence_Always --
1162 -------------------------------
1163
1164 procedure Reraise_Occurrence_Always (X : Exception_Occurrence) is
1165 begin
1166 Abort_Defer.all;
1167 Exception_Propagation.Setup_Exception
1168 (X'Unrestricted_Access, Get_Current_Excep.all, Reraised => True);
1169 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1170 Raise_Current_Excep (X.Id);
1171 end Reraise_Occurrence_Always;
1172
1173 ---------------------------------
1174 -- Reraise_Occurrence_No_Defer --
1175 ---------------------------------
1176
1177 procedure Reraise_Occurrence_No_Defer (X : Exception_Occurrence) is
1178 begin
1179 Exception_Propagation.Setup_Exception
1180 (X'Unrestricted_Access, Get_Current_Excep.all, Reraised => True);
1181 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1182 Raise_Current_Excep (X.Id);
1183 end Reraise_Occurrence_No_Defer;
1184
1185 ---------------------
1186 -- Save_Occurrence --
1187 ---------------------
1188
1189 procedure Save_Occurrence
1190 (Target : out Exception_Occurrence;
1191 Source : Exception_Occurrence)
1192 is
1193 begin
1194 Save_Occurrence_No_Private (Target, Source);
1195 end Save_Occurrence;
1196
1197 function Save_Occurrence (Source : Exception_Occurrence) return EOA is
1198 Target : constant EOA := new Exception_Occurrence;
1199 begin
1200 Save_Occurrence (Target.all, Source);
1201 return Target;
1202 end Save_Occurrence;
1203
1204 --------------------------------
1205 -- Save_Occurrence_No_Private --
1206 --------------------------------
1207
1208 procedure Save_Occurrence_No_Private
1209 (Target : out Exception_Occurrence;
1210 Source : Exception_Occurrence)
1211 is
1212 begin
1213 Target.Id := Source.Id;
1214 Target.Msg_Length := Source.Msg_Length;
1215 Target.Num_Tracebacks := Source.Num_Tracebacks;
1216 Target.Pid := Source.Pid;
1217 Target.Cleanup_Flag := Source.Cleanup_Flag;
1218
1219 Target.Msg (1 .. Target.Msg_Length) :=
1220 Source.Msg (1 .. Target.Msg_Length);
1221
1222 Target.Tracebacks (1 .. Target.Num_Tracebacks) :=
1223 Source.Tracebacks (1 .. Target.Num_Tracebacks);
1224 end Save_Occurrence_No_Private;
1225
1226 -------------------------
1227 -- Transfer_Occurrence --
1228 -------------------------
1229
1230 procedure Transfer_Occurrence
1231 (Target : Exception_Occurrence_Access;
1232 Source : Exception_Occurrence)
1233 is
1234 begin
1235 -- Setup Target as an exception to be propagated in the calling task
1236 -- (rendezvous-wise), taking care not to clobber the associated private
1237 -- data. Target is expected to be a pointer to the calling task's
1238 -- fixed TSD occurrence, which is very different from Get_Current_Excep
1239 -- here because this subprogram is called from the called task.
1240
1241 Exception_Propagation.Setup_Exception (Target, Target);
1242 Save_Occurrence_No_Private (Target.all, Source);
1243 end Transfer_Occurrence;
1244
1245 -------------------
1246 -- String_To_EId --
1247 -------------------
1248
1249 function String_To_EId (S : String) return Exception_Id
1250 renames Stream_Attributes.String_To_EId;
1251
1252 ------------------
1253 -- String_To_EO --
1254 ------------------
1255
1256 function String_To_EO (S : String) return Exception_Occurrence
1257 renames Stream_Attributes.String_To_EO;
1258
1259 ------------------------------
1260 -- Raise_Exception_No_Defer --
1261 ------------------------------
1262
1263 procedure Raise_Exception_No_Defer
1264 (E : Exception_Id;
1265 Message : String := "")
1266 is
1267 begin
1268 Exception_Data.Set_Exception_Msg (E, Message);
1269
1270 -- Do not call Abort_Defer.all, as specified by the spec
1271
1272 Raise_Current_Excep (E);
1273 end Raise_Exception_No_Defer;
1274
1275 ---------------
1276 -- To_Stderr --
1277 ---------------
1278
1279 procedure To_Stderr (C : Character) is
1280
1281 type int is new Integer;
1282
1283 procedure put_char_stderr (C : int);
1284 pragma Import (C, put_char_stderr, "put_char_stderr");
1285
1286 begin
1287 put_char_stderr (Character'Pos (C));
1288 end To_Stderr;
1289
1290 procedure To_Stderr (S : String) is
1291 begin
1292 for J in S'Range loop
1293 if S (J) /= ASCII.CR then
1294 To_Stderr (S (J));
1295 end if;
1296 end loop;
1297 end To_Stderr;
1298
1299 -------------------------
1300 -- Wide_Exception_Name --
1301 -------------------------
1302
1303 WC_Encoding : Character;
1304 pragma Import (C, WC_Encoding, "__gl_wc_encoding");
1305 -- Encoding method for source, as exported by binder
1306
1307 function Wide_Exception_Name
1308 (Id : Exception_Id) return Wide_String is
1309 begin
1310 return String_To_Wide_String
1311 (Exception_Name (Id), Get_WC_Encoding_Method (WC_Encoding));
1312 end Wide_Exception_Name;
1313
1314 function Wide_Exception_Name
1315 (X : Exception_Occurrence) return Wide_String is
1316 begin
1317 return String_To_Wide_String
1318 (Exception_Name (X), Get_WC_Encoding_Method (WC_Encoding));
1319 end Wide_Exception_Name;
1320
1321 ----------------------------
1322 -- Wide_Wide_Exception_Name --
1323 -----------------------------
1324
1325 function Wide_Wide_Exception_Name
1326 (Id : Exception_Id) return Wide_Wide_String
1327 is
1328 begin
1329 return String_To_Wide_Wide_String
1330 (Exception_Name (Id), Get_WC_Encoding_Method (WC_Encoding));
1331 end Wide_Wide_Exception_Name;
1332
1333 function Wide_Wide_Exception_Name
1334 (X : Exception_Occurrence) return Wide_Wide_String
1335 is
1336 begin
1337 return String_To_Wide_Wide_String
1338 (Exception_Name (X), Get_WC_Encoding_Method (WC_Encoding));
1339 end Wide_Wide_Exception_Name;
1340
1341 --------------------------
1342 -- Code_Address_For_ZZZ --
1343 --------------------------
1344
1345 -- This function gives us the end of the PC range for addresses
1346 -- within the exception unit itself. We hope that gigi/gcc keeps all the
1347 -- procedures in their original order!
1348
1349 function Code_Address_For_ZZZ return System.Address is
1350 begin
1351 <<Start_Of_ZZZ>>
1352 return Start_Of_ZZZ'Address;
1353 end Code_Address_For_ZZZ;
1354
1355 end Ada.Exceptions;
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