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Remove outermost loop parameter.
[official-gcc/graphite-test-results.git] / gcc / ada / a-except-2005.adb
blobad43e2121d1c78d86e835868966951b1056b7675
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) 1992-2009, 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.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, whether 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 raise a specific exception with a reason message
422 -- attached. The parameters are the file name and line number in each
423 -- case. The names are keyed to the codes defined in types.ads and
424 -- a-types.h (for example, the name Rcheck_05 refers to the Reason
425 -- RT_Exception_Code'Val (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 procedure Rcheck_33 (File : System.Address; Line : Integer);
461
462 pragma Export (C, Rcheck_00, "__gnat_rcheck_00");
463 pragma Export (C, Rcheck_01, "__gnat_rcheck_01");
464 pragma Export (C, Rcheck_02, "__gnat_rcheck_02");
465 pragma Export (C, Rcheck_03, "__gnat_rcheck_03");
466 pragma Export (C, Rcheck_04, "__gnat_rcheck_04");
467 pragma Export (C, Rcheck_05, "__gnat_rcheck_05");
468 pragma Export (C, Rcheck_06, "__gnat_rcheck_06");
469 pragma Export (C, Rcheck_07, "__gnat_rcheck_07");
470 pragma Export (C, Rcheck_08, "__gnat_rcheck_08");
471 pragma Export (C, Rcheck_09, "__gnat_rcheck_09");
472 pragma Export (C, Rcheck_10, "__gnat_rcheck_10");
473 pragma Export (C, Rcheck_11, "__gnat_rcheck_11");
474 pragma Export (C, Rcheck_12, "__gnat_rcheck_12");
475 pragma Export (C, Rcheck_13, "__gnat_rcheck_13");
476 pragma Export (C, Rcheck_14, "__gnat_rcheck_14");
477 pragma Export (C, Rcheck_15, "__gnat_rcheck_15");
478 pragma Export (C, Rcheck_16, "__gnat_rcheck_16");
479 pragma Export (C, Rcheck_17, "__gnat_rcheck_17");
480 pragma Export (C, Rcheck_18, "__gnat_rcheck_18");
481 pragma Export (C, Rcheck_19, "__gnat_rcheck_19");
482 pragma Export (C, Rcheck_20, "__gnat_rcheck_20");
483 pragma Export (C, Rcheck_21, "__gnat_rcheck_21");
484 pragma Export (C, Rcheck_22, "__gnat_rcheck_22");
485 pragma Export (C, Rcheck_23, "__gnat_rcheck_23");
486 pragma Export (C, Rcheck_24, "__gnat_rcheck_24");
487 pragma Export (C, Rcheck_25, "__gnat_rcheck_25");
488 pragma Export (C, Rcheck_26, "__gnat_rcheck_26");
489 pragma Export (C, Rcheck_27, "__gnat_rcheck_27");
490 pragma Export (C, Rcheck_28, "__gnat_rcheck_28");
491 pragma Export (C, Rcheck_29, "__gnat_rcheck_29");
492 pragma Export (C, Rcheck_30, "__gnat_rcheck_30");
493 pragma Export (C, Rcheck_31, "__gnat_rcheck_31");
494 pragma Export (C, Rcheck_32, "__gnat_rcheck_32");
495 pragma Export (C, Rcheck_33, "__gnat_rcheck_33");
496
497 -- None of these procedures ever returns (they raise an exception!). By
498 -- using pragma No_Return, we ensure that any junk code after the call,
499 -- such as normal return epilog stuff, can be eliminated).
500
501 pragma No_Return (Rcheck_00);
502 pragma No_Return (Rcheck_01);
503 pragma No_Return (Rcheck_02);
504 pragma No_Return (Rcheck_03);
505 pragma No_Return (Rcheck_04);
506 pragma No_Return (Rcheck_05);
507 pragma No_Return (Rcheck_06);
508 pragma No_Return (Rcheck_07);
509 pragma No_Return (Rcheck_08);
510 pragma No_Return (Rcheck_09);
511 pragma No_Return (Rcheck_10);
512 pragma No_Return (Rcheck_11);
513 pragma No_Return (Rcheck_12);
514 pragma No_Return (Rcheck_13);
515 pragma No_Return (Rcheck_14);
516 pragma No_Return (Rcheck_15);
517 pragma No_Return (Rcheck_16);
518 pragma No_Return (Rcheck_17);
519 pragma No_Return (Rcheck_18);
520 pragma No_Return (Rcheck_19);
521 pragma No_Return (Rcheck_20);
522 pragma No_Return (Rcheck_21);
523 pragma No_Return (Rcheck_22);
524 pragma No_Return (Rcheck_23);
525 pragma No_Return (Rcheck_24);
526 pragma No_Return (Rcheck_25);
527 pragma No_Return (Rcheck_26);
528 pragma No_Return (Rcheck_27);
529 pragma No_Return (Rcheck_28);
530 pragma No_Return (Rcheck_29);
531 pragma No_Return (Rcheck_30);
532 pragma No_Return (Rcheck_32);
533 pragma No_Return (Rcheck_33);
534
535 ---------------------------------------------
536 -- Reason Strings for Run-Time Check Calls --
537 ---------------------------------------------
538
539 -- These strings are null-terminated and are used by Rcheck_nn. The
540 -- strings correspond to the definitions for Types.RT_Exception_Code.
541
542 use ASCII;
543
544 Rmsg_00 : constant String := "access check failed" & NUL;
545 Rmsg_01 : constant String := "access parameter is null" & NUL;
546 Rmsg_02 : constant String := "discriminant check failed" & NUL;
547 Rmsg_03 : constant String := "divide by zero" & NUL;
548 Rmsg_04 : constant String := "explicit raise" & NUL;
549 Rmsg_05 : constant String := "index check failed" & NUL;
550 Rmsg_06 : constant String := "invalid data" & NUL;
551 Rmsg_07 : constant String := "length check failed" & NUL;
552 Rmsg_08 : constant String := "null Exception_Id" & NUL;
553 Rmsg_09 : constant String := "null-exclusion check failed" & NUL;
554 Rmsg_10 : constant String := "overflow check failed" & NUL;
555 Rmsg_11 : constant String := "partition check failed" & NUL;
556 Rmsg_12 : constant String := "range check failed" & NUL;
557 Rmsg_13 : constant String := "tag check failed" & NUL;
558 Rmsg_14 : constant String := "access before elaboration" & NUL;
559 Rmsg_15 : constant String := "accessibility check failed" & NUL;
560 Rmsg_16 : constant String := "attempt to take address of" &
561 " intrinsic subprogram" & NUL;
562 Rmsg_17 : constant String := "all guards closed" & NUL;
563 Rmsg_18 : constant String := "Current_Task referenced in entry" &
564 " body" & NUL;
565 Rmsg_19 : constant String := "duplicated entry address" & NUL;
566 Rmsg_20 : constant String := "explicit raise" & NUL;
567 Rmsg_21 : constant String := "finalize/adjust raised exception" & NUL;
568 Rmsg_22 : constant String := "implicit return with No_Return" & NUL;
569 Rmsg_23 : constant String := "misaligned address value" & NUL;
570 Rmsg_24 : constant String := "missing return" & NUL;
571 Rmsg_25 : constant String := "overlaid controlled object" & NUL;
572 Rmsg_26 : constant String := "potentially blocking operation" & NUL;
573 Rmsg_27 : constant String := "stubbed subprogram called" & NUL;
574 Rmsg_28 : constant String := "unchecked union restriction" & NUL;
575 Rmsg_29 : constant String := "actual/returned class-wide" &
576 " value not transportable" & NUL;
577 Rmsg_30 : constant String := "empty storage pool" & NUL;
578 Rmsg_31 : constant String := "explicit raise" & NUL;
579 Rmsg_32 : constant String := "infinite recursion" & NUL;
580 Rmsg_33 : constant String := "object too large" & NUL;
581
582 -----------------------
583 -- Polling Interface --
584 -----------------------
585
586 type Unsigned is mod 2 ** 32;
587
588 Counter : Unsigned := 0;
589 pragma Warnings (Off, Counter);
590 -- This counter is provided for convenience. It can be used in Poll to
591 -- perform periodic but not systematic operations.
592
593 procedure Poll is separate;
594 -- The actual polling routine is separate, so that it can easily
595 -- be replaced with a target dependent version.
596
597 --------------------------
598 -- Code_Address_For_AAA --
599 --------------------------
600
601 -- This function gives us the start of the PC range for addresses
602 -- within the exception unit itself. We hope that gigi/gcc keep all the
603 -- procedures in their original order!
604
605 function Code_Address_For_AAA return System.Address is
606 begin
607 -- We are using a label instead of merely using
608 -- Code_Address_For_AAA'Address because on some platforms the latter
609 -- does not yield the address we want, but the address of a stub or of
610 -- a descriptor instead. This is the case at least on Alpha-VMS and
611 -- PA-HPUX.
612
613 <<Start_Of_AAA>>
614 return Start_Of_AAA'Address;
615 end Code_Address_For_AAA;
616
617 ----------------
618 -- Call_Chain --
619 ----------------
620
621 procedure Call_Chain (Excep : EOA) is separate;
622 -- The actual Call_Chain routine is separate, so that it can easily
623 -- be dummied out when no exception traceback information is needed.
624
625 ------------------------------
626 -- Current_Target_Exception --
627 ------------------------------
628
629 function Current_Target_Exception return Exception_Occurrence is
630 begin
631 return Null_Occurrence;
632 end Current_Target_Exception;
633
634 -------------------
635 -- EId_To_String --
636 -------------------
637
638 function EId_To_String (X : Exception_Id) return String
639 renames Stream_Attributes.EId_To_String;
640
641 ------------------
642 -- EO_To_String --
643 ------------------
644
645 -- We use the null string to represent the null occurrence, otherwise
646 -- we output the Exception_Information string for the occurrence.
647
648 function EO_To_String (X : Exception_Occurrence) return String
649 renames Stream_Attributes.EO_To_String;
650
651 ------------------------
652 -- Exception_Identity --
653 ------------------------
654
655 function Exception_Identity
656 (X : Exception_Occurrence) return Exception_Id
657 is
658 begin
659 -- Note that the following test used to be here for the original
660 -- Ada 95 semantics, but these were modified by AI-241 to require
661 -- returning Null_Id instead of raising Constraint_Error.
662
663 -- if X.Id = Null_Id then
664 -- raise Constraint_Error;
665 -- end if;
666
667 return X.Id;
668 end Exception_Identity;
669
670 ---------------------------
671 -- Exception_Information --
672 ---------------------------
673
674 function Exception_Information (X : Exception_Occurrence) return String is
675 begin
676 if X.Id = Null_Id then
677 raise Constraint_Error;
678 end if;
679
680 return Exception_Data.Exception_Information (X);
681 end Exception_Information;
682
683 -----------------------
684 -- Exception_Message --
685 -----------------------
686
687 function Exception_Message (X : Exception_Occurrence) return String is
688 begin
689 if X.Id = Null_Id then
690 raise Constraint_Error;
691 end if;
692
693 return X.Msg (1 .. X.Msg_Length);
694 end Exception_Message;
695
696 --------------------
697 -- Exception_Name --
698 --------------------
699
700 function Exception_Name (Id : Exception_Id) return String is
701 begin
702 if Id = null then
703 raise Constraint_Error;
704 end if;
705
706 return To_Ptr (Id.Full_Name) (1 .. Id.Name_Length - 1);
707 end Exception_Name;
708
709 function Exception_Name (X : Exception_Occurrence) return String is
710 begin
711 return Exception_Name (X.Id);
712 end Exception_Name;
713
714 ---------------------------
715 -- Exception_Name_Simple --
716 ---------------------------
717
718 function Exception_Name_Simple (X : Exception_Occurrence) return String is
719 Name : constant String := Exception_Name (X);
720 P : Natural;
721
722 begin
723 P := Name'Length;
724 while P > 1 loop
725 exit when Name (P - 1) = '.';
726 P := P - 1;
727 end loop;
728
729 -- Return result making sure lower bound is 1
730
731 declare
732 subtype Rname is String (1 .. Name'Length - P + 1);
733 begin
734 return Rname (Name (P .. Name'Length));
735 end;
736 end Exception_Name_Simple;
737
738 --------------------
739 -- Exception_Data --
740 --------------------
741
742 package body Exception_Data is separate;
743 -- This package can be easily dummied out if we do not want the
744 -- basic support for exception messages (such as in Ada 83).
745
746 ---------------------------
747 -- Exception_Propagation --
748 ---------------------------
749
750 package body Exception_Propagation is separate;
751 -- Depending on the actual exception mechanism used (front-end or
752 -- back-end based), the implementation will differ, which is why this
753 -- package is separated.
754
755 ----------------------
756 -- Exception_Traces --
757 ----------------------
758
759 package body Exception_Traces is separate;
760 -- Depending on the underlying support for IO the implementation
761 -- will differ. Moreover we would like to dummy out this package
762 -- in case we do not want any exception tracing support. This is
763 -- why this package is separated.
764
765 -----------------------
766 -- Stream Attributes --
767 -----------------------
768
769 package body Stream_Attributes is separate;
770 -- This package can be easily dummied out if we do not want the
771 -- support for streaming Exception_Ids and Exception_Occurrences.
772
773 ----------------------------
774 -- Raise_Constraint_Error --
775 ----------------------------
776
777 procedure Raise_Constraint_Error
778 (File : System.Address;
779 Line : Integer)
780 is
781 begin
782 Raise_With_Location_And_Msg
783 (Constraint_Error_Def'Access, File, Line);
784 end Raise_Constraint_Error;
785
786 --------------------------------
787 -- Raise_Constraint_Error_Msg --
788 --------------------------------
789
790 procedure Raise_Constraint_Error_Msg
791 (File : System.Address;
792 Line : Integer;
793 Msg : System.Address)
794 is
795 begin
796 Raise_With_Location_And_Msg
797 (Constraint_Error_Def'Access, File, Line, Msg);
798 end Raise_Constraint_Error_Msg;
799
800 -------------------------
801 -- Raise_Current_Excep --
802 -------------------------
803
804 procedure Raise_Current_Excep (E : Exception_Id) is
805
806 pragma Inspection_Point (E);
807 -- This is so the debugger can reliably inspect the parameter when
808 -- inserting a breakpoint at the start of this procedure.
809
810 -- To provide support for breakpoints on unhandled exceptions, the
811 -- debugger will also need to be able to inspect the value of E from
812 -- inner frames so we need to make sure that its value is also spilled
813 -- on stack. We take the address and dereference using volatile local
814 -- objects for this purpose.
815
816 -- The pragma Warnings (Off) are needed because the compiler knows that
817 -- these locals are not referenced and that this use of pragma Volatile
818 -- is peculiar!
819
820 type EID_Access is access Exception_Id;
821
822 Access_To_E : EID_Access := E'Unrestricted_Access;
823 pragma Volatile (Access_To_E);
824 pragma Warnings (Off, Access_To_E);
825
826 Id : Exception_Id := Access_To_E.all;
827 pragma Volatile (Id);
828 pragma Warnings (Off, Id);
829
830 begin
831 Debug_Raise_Exception (E => SSL.Exception_Data_Ptr (E));
832 Exception_Propagation.Propagate_Exception
833 (E => E, From_Signal_Handler => False);
834 end Raise_Current_Excep;
835
836 ---------------------
837 -- Raise_Exception --
838 ---------------------
839
840 procedure Raise_Exception
841 (E : Exception_Id;
842 Message : String := "")
843 is
844 EF : Exception_Id := E;
845
846 begin
847 -- Raise CE if E = Null_ID (AI-446)
848
849 if E = null then
850 EF := Constraint_Error'Identity;
851 end if;
852
853 -- Go ahead and raise appropriate exception
854
855 Exception_Data.Set_Exception_Msg (EF, Message);
856 Abort_Defer.all;
857 Raise_Current_Excep (EF);
858 end Raise_Exception;
859
860 ----------------------------
861 -- Raise_Exception_Always --
862 ----------------------------
863
864 procedure Raise_Exception_Always
865 (E : Exception_Id;
866 Message : String := "")
867 is
868 begin
869 Exception_Data.Set_Exception_Msg (E, Message);
870 Abort_Defer.all;
871 Raise_Current_Excep (E);
872 end Raise_Exception_Always;
873
874 -------------------------------------
875 -- Raise_From_Controlled_Operation --
876 -------------------------------------
877
878 procedure Raise_From_Controlled_Operation
879 (X : Ada.Exceptions.Exception_Occurrence)
880 is
881 Prefix : constant String := "adjust/finalize raised ";
882 Orig_Msg : constant String := Exception_Message (X);
883 New_Msg : constant String := Prefix & Exception_Name (X);
884
885 begin
886 if Orig_Msg'Length >= Prefix'Length
887 and then
888 Orig_Msg (Orig_Msg'First .. Orig_Msg'First + Prefix'Length - 1) =
889 Prefix
890 then
891 -- Message already has proper prefix, just re-reraise PROGRAM_ERROR
892
893 Raise_Exception_No_Defer
894 (E => Program_Error'Identity,
895 Message => Orig_Msg);
896
897 elsif Orig_Msg = "" then
898
899 -- No message present: just provide our own
900
901 Raise_Exception_No_Defer
902 (E => Program_Error'Identity,
903 Message => New_Msg);
904
905 else
906 -- Message present, add informational prefix
907
908 Raise_Exception_No_Defer
909 (E => Program_Error'Identity,
910 Message => New_Msg & ": " & Orig_Msg);
911 end if;
912 end Raise_From_Controlled_Operation;
913
914 -------------------------------
915 -- Raise_From_Signal_Handler --
916 -------------------------------
917
918 procedure Raise_From_Signal_Handler
919 (E : Exception_Id;
920 M : System.Address)
921 is
922 begin
923 Exception_Data.Set_Exception_C_Msg (E, M);
924 Abort_Defer.all;
925 Exception_Propagation.Propagate_Exception
926 (E => E, From_Signal_Handler => True);
927 end Raise_From_Signal_Handler;
928
929 -------------------------
930 -- Raise_Program_Error --
931 -------------------------
932
933 procedure Raise_Program_Error
934 (File : System.Address;
935 Line : Integer)
936 is
937 begin
938 Raise_With_Location_And_Msg
939 (Program_Error_Def'Access, File, Line);
940 end Raise_Program_Error;
941
942 -----------------------------
943 -- Raise_Program_Error_Msg --
944 -----------------------------
945
946 procedure Raise_Program_Error_Msg
947 (File : System.Address;
948 Line : Integer;
949 Msg : System.Address)
950 is
951 begin
952 Raise_With_Location_And_Msg
953 (Program_Error_Def'Access, File, Line, Msg);
954 end Raise_Program_Error_Msg;
955
956 -------------------------
957 -- Raise_Storage_Error --
958 -------------------------
959
960 procedure Raise_Storage_Error
961 (File : System.Address;
962 Line : Integer)
963 is
964 begin
965 Raise_With_Location_And_Msg
966 (Storage_Error_Def'Access, File, Line);
967 end Raise_Storage_Error;
968
969 -----------------------------
970 -- Raise_Storage_Error_Msg --
971 -----------------------------
972
973 procedure Raise_Storage_Error_Msg
974 (File : System.Address;
975 Line : Integer;
976 Msg : System.Address)
977 is
978 begin
979 Raise_With_Location_And_Msg
980 (Storage_Error_Def'Access, File, Line, Msg);
981 end Raise_Storage_Error_Msg;
982
983 ---------------------------------
984 -- Raise_With_Location_And_Msg --
985 ---------------------------------
986
987 procedure Raise_With_Location_And_Msg
988 (E : Exception_Id;
989 F : System.Address;
990 L : Integer;
991 M : System.Address := System.Null_Address)
992 is
993 begin
994 Exception_Data.Set_Exception_C_Msg (E, F, L, M);
995 Abort_Defer.all;
996 Raise_Current_Excep (E);
997 end Raise_With_Location_And_Msg;
998
999 --------------------
1000 -- Raise_With_Msg --
1001 --------------------
1002
1003 procedure Raise_With_Msg (E : Exception_Id) is
1004 Excep : constant EOA := Get_Current_Excep.all;
1005
1006 begin
1007 Exception_Propagation.Setup_Exception (Excep, Excep);
1008
1009 Excep.Exception_Raised := False;
1010 Excep.Id := E;
1011 Excep.Num_Tracebacks := 0;
1012 Excep.Cleanup_Flag := False;
1013 Excep.Pid := Local_Partition_ID;
1014 Abort_Defer.all;
1015 Raise_Current_Excep (E);
1016 end Raise_With_Msg;
1017
1018 --------------------------------------
1019 -- Calls to Run-Time Check Routines --
1020 --------------------------------------
1021
1022 procedure Rcheck_00 (File : System.Address; Line : Integer) is
1023 begin
1024 Raise_Constraint_Error_Msg (File, Line, Rmsg_00'Address);
1025 end Rcheck_00;
1026
1027 procedure Rcheck_01 (File : System.Address; Line : Integer) is
1028 begin
1029 Raise_Constraint_Error_Msg (File, Line, Rmsg_01'Address);
1030 end Rcheck_01;
1031
1032 procedure Rcheck_02 (File : System.Address; Line : Integer) is
1033 begin
1034 Raise_Constraint_Error_Msg (File, Line, Rmsg_02'Address);
1035 end Rcheck_02;
1036
1037 procedure Rcheck_03 (File : System.Address; Line : Integer) is
1038 begin
1039 Raise_Constraint_Error_Msg (File, Line, Rmsg_03'Address);
1040 end Rcheck_03;
1041
1042 procedure Rcheck_04 (File : System.Address; Line : Integer) is
1043 begin
1044 Raise_Constraint_Error_Msg (File, Line, Rmsg_04'Address);
1045 end Rcheck_04;
1046
1047 procedure Rcheck_05 (File : System.Address; Line : Integer) is
1048 begin
1049 Raise_Constraint_Error_Msg (File, Line, Rmsg_05'Address);
1050 end Rcheck_05;
1051
1052 procedure Rcheck_06 (File : System.Address; Line : Integer) is
1053 begin
1054 Raise_Constraint_Error_Msg (File, Line, Rmsg_06'Address);
1055 end Rcheck_06;
1056
1057 procedure Rcheck_07 (File : System.Address; Line : Integer) is
1058 begin
1059 Raise_Constraint_Error_Msg (File, Line, Rmsg_07'Address);
1060 end Rcheck_07;
1061
1062 procedure Rcheck_08 (File : System.Address; Line : Integer) is
1063 begin
1064 Raise_Constraint_Error_Msg (File, Line, Rmsg_08'Address);
1065 end Rcheck_08;
1066
1067 procedure Rcheck_09 (File : System.Address; Line : Integer) is
1068 begin
1069 Raise_Constraint_Error_Msg (File, Line, Rmsg_09'Address);
1070 end Rcheck_09;
1071
1072 procedure Rcheck_10 (File : System.Address; Line : Integer) is
1073 begin
1074 Raise_Constraint_Error_Msg (File, Line, Rmsg_10'Address);
1075 end Rcheck_10;
1076
1077 procedure Rcheck_11 (File : System.Address; Line : Integer) is
1078 begin
1079 Raise_Constraint_Error_Msg (File, Line, Rmsg_11'Address);
1080 end Rcheck_11;
1081
1082 procedure Rcheck_12 (File : System.Address; Line : Integer) is
1083 begin
1084 Raise_Constraint_Error_Msg (File, Line, Rmsg_12'Address);
1085 end Rcheck_12;
1086
1087 procedure Rcheck_13 (File : System.Address; Line : Integer) is
1088 begin
1089 Raise_Constraint_Error_Msg (File, Line, Rmsg_13'Address);
1090 end Rcheck_13;
1091
1092 procedure Rcheck_14 (File : System.Address; Line : Integer) is
1093 begin
1094 Raise_Program_Error_Msg (File, Line, Rmsg_14'Address);
1095 end Rcheck_14;
1096
1097 procedure Rcheck_15 (File : System.Address; Line : Integer) is
1098 begin
1099 Raise_Program_Error_Msg (File, Line, Rmsg_15'Address);
1100 end Rcheck_15;
1101
1102 procedure Rcheck_16 (File : System.Address; Line : Integer) is
1103 begin
1104 Raise_Program_Error_Msg (File, Line, Rmsg_16'Address);
1105 end Rcheck_16;
1106
1107 procedure Rcheck_17 (File : System.Address; Line : Integer) is
1108 begin
1109 Raise_Program_Error_Msg (File, Line, Rmsg_17'Address);
1110 end Rcheck_17;
1111
1112 procedure Rcheck_18 (File : System.Address; Line : Integer) is
1113 begin
1114 Raise_Program_Error_Msg (File, Line, Rmsg_18'Address);
1115 end Rcheck_18;
1116
1117 procedure Rcheck_19 (File : System.Address; Line : Integer) is
1118 begin
1119 Raise_Program_Error_Msg (File, Line, Rmsg_19'Address);
1120 end Rcheck_19;
1121
1122 procedure Rcheck_20 (File : System.Address; Line : Integer) is
1123 begin
1124 Raise_Program_Error_Msg (File, Line, Rmsg_20'Address);
1125 end Rcheck_20;
1126
1127 procedure Rcheck_21 (File : System.Address; Line : Integer) is
1128 begin
1129 Raise_Program_Error_Msg (File, Line, Rmsg_21'Address);
1130 end Rcheck_21;
1131
1132 procedure Rcheck_22 (File : System.Address; Line : Integer) is
1133 begin
1134 Raise_Program_Error_Msg (File, Line, Rmsg_22'Address);
1135 end Rcheck_22;
1136
1137 procedure Rcheck_23 (File : System.Address; Line : Integer) is
1138 begin
1139 Raise_Program_Error_Msg (File, Line, Rmsg_23'Address);
1140 end Rcheck_23;
1141
1142 procedure Rcheck_24 (File : System.Address; Line : Integer) is
1143 begin
1144 Raise_Program_Error_Msg (File, Line, Rmsg_24'Address);
1145 end Rcheck_24;
1146
1147 procedure Rcheck_25 (File : System.Address; Line : Integer) is
1148 begin
1149 Raise_Program_Error_Msg (File, Line, Rmsg_25'Address);
1150 end Rcheck_25;
1151
1152 procedure Rcheck_26 (File : System.Address; Line : Integer) is
1153 begin
1154 Raise_Program_Error_Msg (File, Line, Rmsg_26'Address);
1155 end Rcheck_26;
1156
1157 procedure Rcheck_27 (File : System.Address; Line : Integer) is
1158 begin
1159 Raise_Program_Error_Msg (File, Line, Rmsg_27'Address);
1160 end Rcheck_27;
1161
1162 procedure Rcheck_28 (File : System.Address; Line : Integer) is
1163 begin
1164 Raise_Program_Error_Msg (File, Line, Rmsg_28'Address);
1165 end Rcheck_28;
1166
1167 procedure Rcheck_29 (File : System.Address; Line : Integer) is
1168 begin
1169 Raise_Program_Error_Msg (File, Line, Rmsg_29'Address);
1170 end Rcheck_29;
1171
1172 procedure Rcheck_30 (File : System.Address; Line : Integer) is
1173 begin
1174 Raise_Storage_Error_Msg (File, Line, Rmsg_30'Address);
1175 end Rcheck_30;
1176
1177 procedure Rcheck_31 (File : System.Address; Line : Integer) is
1178 begin
1179 Raise_Storage_Error_Msg (File, Line, Rmsg_31'Address);
1180 end Rcheck_31;
1181
1182 procedure Rcheck_32 (File : System.Address; Line : Integer) is
1183 begin
1184 Raise_Storage_Error_Msg (File, Line, Rmsg_32'Address);
1185 end Rcheck_32;
1186
1187 procedure Rcheck_33 (File : System.Address; Line : Integer) is
1188 begin
1189 Raise_Storage_Error_Msg (File, Line, Rmsg_33'Address);
1190 end Rcheck_33;
1191
1192 -------------
1193 -- Reraise --
1194 -------------
1195
1196 procedure Reraise is
1197 Excep : constant EOA := Get_Current_Excep.all;
1198
1199 begin
1200 Abort_Defer.all;
1201 Exception_Propagation.Setup_Exception (Excep, Excep, Reraised => True);
1202 Raise_Current_Excep (Excep.Id);
1203 end Reraise;
1204
1205 ------------------------
1206 -- Reraise_Occurrence --
1207 ------------------------
1208
1209 procedure Reraise_Occurrence (X : Exception_Occurrence) is
1210 begin
1211 if X.Id /= null then
1212 Abort_Defer.all;
1213 Exception_Propagation.Setup_Exception
1214 (X'Unrestricted_Access, Get_Current_Excep.all, Reraised => True);
1215 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1216 Raise_Current_Excep (X.Id);
1217 end if;
1218 end Reraise_Occurrence;
1219
1220 -------------------------------
1221 -- Reraise_Occurrence_Always --
1222 -------------------------------
1223
1224 procedure Reraise_Occurrence_Always (X : Exception_Occurrence) is
1225 begin
1226 Abort_Defer.all;
1227 Exception_Propagation.Setup_Exception
1228 (X'Unrestricted_Access, Get_Current_Excep.all, Reraised => True);
1229 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1230 Raise_Current_Excep (X.Id);
1231 end Reraise_Occurrence_Always;
1232
1233 ---------------------------------
1234 -- Reraise_Occurrence_No_Defer --
1235 ---------------------------------
1236
1237 procedure Reraise_Occurrence_No_Defer (X : Exception_Occurrence) is
1238 begin
1239 Exception_Propagation.Setup_Exception
1240 (X'Unrestricted_Access, Get_Current_Excep.all, Reraised => True);
1241 Save_Occurrence_No_Private (Get_Current_Excep.all.all, X);
1242 Raise_Current_Excep (X.Id);
1243 end Reraise_Occurrence_No_Defer;
1244
1245 ---------------------
1246 -- Save_Occurrence --
1247 ---------------------
1248
1249 procedure Save_Occurrence
1250 (Target : out Exception_Occurrence;
1251 Source : Exception_Occurrence)
1252 is
1253 begin
1254 Save_Occurrence_No_Private (Target, Source);
1255 end Save_Occurrence;
1256
1257 function Save_Occurrence (Source : Exception_Occurrence) return EOA is
1258 Target : constant EOA := new Exception_Occurrence;
1259 begin
1260 Save_Occurrence (Target.all, Source);
1261 return Target;
1262 end Save_Occurrence;
1263
1264 --------------------------------
1265 -- Save_Occurrence_No_Private --
1266 --------------------------------
1267
1268 procedure Save_Occurrence_No_Private
1269 (Target : out Exception_Occurrence;
1270 Source : Exception_Occurrence)
1271 is
1272 begin
1273 Target.Id := Source.Id;
1274 Target.Msg_Length := Source.Msg_Length;
1275 Target.Num_Tracebacks := Source.Num_Tracebacks;
1276 Target.Pid := Source.Pid;
1277 Target.Cleanup_Flag := Source.Cleanup_Flag;
1278
1279 Target.Msg (1 .. Target.Msg_Length) :=
1280 Source.Msg (1 .. Target.Msg_Length);
1281
1282 Target.Tracebacks (1 .. Target.Num_Tracebacks) :=
1283 Source.Tracebacks (1 .. Target.Num_Tracebacks);
1284 end Save_Occurrence_No_Private;
1285
1286 -------------------------
1287 -- Transfer_Occurrence --
1288 -------------------------
1289
1290 procedure Transfer_Occurrence
1291 (Target : Exception_Occurrence_Access;
1292 Source : Exception_Occurrence)
1293 is
1294 begin
1295 -- Setup Target as an exception to be propagated in the calling task
1296 -- (rendezvous-wise), taking care not to clobber the associated private
1297 -- data. Target is expected to be a pointer to the calling task's
1298 -- fixed TSD occurrence, which is very different from Get_Current_Excep
1299 -- here because this subprogram is called from the called task.
1300
1301 Exception_Propagation.Setup_Exception (Target, Target);
1302 Save_Occurrence_No_Private (Target.all, Source);
1303 end Transfer_Occurrence;
1304
1305 -------------------
1306 -- String_To_EId --
1307 -------------------
1308
1309 function String_To_EId (S : String) return Exception_Id
1310 renames Stream_Attributes.String_To_EId;
1311
1312 ------------------
1313 -- String_To_EO --
1314 ------------------
1315
1316 function String_To_EO (S : String) return Exception_Occurrence
1317 renames Stream_Attributes.String_To_EO;
1318
1319 ------------------------------
1320 -- Raise_Exception_No_Defer --
1321 ------------------------------
1322
1323 procedure Raise_Exception_No_Defer
1324 (E : Exception_Id;
1325 Message : String := "")
1326 is
1327 begin
1328 Exception_Data.Set_Exception_Msg (E, Message);
1329
1330 -- Do not call Abort_Defer.all, as specified by the spec
1331
1332 Raise_Current_Excep (E);
1333 end Raise_Exception_No_Defer;
1334
1335 ---------------
1336 -- To_Stderr --
1337 ---------------
1338
1339 procedure To_Stderr (C : Character) is
1340
1341 type int is new Integer;
1342
1343 procedure put_char_stderr (C : int);
1344 pragma Import (C, put_char_stderr, "put_char_stderr");
1345
1346 begin
1347 put_char_stderr (Character'Pos (C));
1348 end To_Stderr;
1349
1350 procedure To_Stderr (S : String) is
1351 begin
1352 for J in S'Range loop
1353 if S (J) /= ASCII.CR then
1354 To_Stderr (S (J));
1355 end if;
1356 end loop;
1357 end To_Stderr;
1358
1359 -------------------------
1360 -- Wide_Exception_Name --
1361 -------------------------
1362
1363 WC_Encoding : Character;
1364 pragma Import (C, WC_Encoding, "__gl_wc_encoding");
1365 -- Encoding method for source, as exported by binder
1366
1367 function Wide_Exception_Name
1368 (Id : Exception_Id) return Wide_String
1369 is
1370 S : constant String := Exception_Name (Id);
1371 W : Wide_String (1 .. S'Length);
1372 L : Natural;
1373 begin
1374 String_To_Wide_String
1375 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1376 return W (1 .. L);
1377 end Wide_Exception_Name;
1378
1379 function Wide_Exception_Name
1380 (X : Exception_Occurrence) return Wide_String
1381 is
1382 S : constant String := Exception_Name (X);
1383 W : Wide_String (1 .. S'Length);
1384 L : Natural;
1385 begin
1386 String_To_Wide_String
1387 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1388 return W (1 .. L);
1389 end Wide_Exception_Name;
1390
1391 ----------------------------
1392 -- Wide_Wide_Exception_Name --
1393 -----------------------------
1394
1395 function Wide_Wide_Exception_Name
1396 (Id : Exception_Id) return Wide_Wide_String
1397 is
1398 S : constant String := Exception_Name (Id);
1399 W : Wide_Wide_String (1 .. S'Length);
1400 L : Natural;
1401 begin
1402 String_To_Wide_Wide_String
1403 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1404 return W (1 .. L);
1405 end Wide_Wide_Exception_Name;
1406
1407 function Wide_Wide_Exception_Name
1408 (X : Exception_Occurrence) return Wide_Wide_String
1409 is
1410 S : constant String := Exception_Name (X);
1411 W : Wide_Wide_String (1 .. S'Length);
1412 L : Natural;
1413 begin
1414 String_To_Wide_Wide_String
1415 (S, W, L, Get_WC_Encoding_Method (WC_Encoding));
1416 return W (1 .. L);
1417 end Wide_Wide_Exception_Name;
1418
1419 --------------------------
1420 -- Code_Address_For_ZZZ --
1421 --------------------------
1422
1423 -- This function gives us the end of the PC range for addresses
1424 -- within the exception unit itself. We hope that gigi/gcc keeps all the
1425 -- procedures in their original order!
1426
1427 function Code_Address_For_ZZZ return System.Address is
1428 begin
1429 <<Start_Of_ZZZ>>
1430 return Start_Of_ZZZ'Address;
1431 end Code_Address_For_ZZZ;
1432
1433 end Ada.Exceptions;
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