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1 | ------------------------------------------------------------------------------ |
2 | -- -- | |
3 | -- GNAT COMPILER COMPONENTS -- | |
4 | -- -- | |
5 | -- D E B U G -- | |
6 | -- -- | |
7 | -- B o d y -- | |
8 | -- -- | |
748086b7 | 9 | -- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- |
70482933 RK |
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- -- | |
748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
70482933 RK |
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 -- | |
748086b7 | 16 | -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
70482933 | 17 | -- -- |
748086b7 JJ |
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/>. -- | |
70482933 RK |
26 | -- -- |
27 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
71ff80dc | 28 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
70482933 RK |
29 | -- -- |
30 | ------------------------------------------------------------------------------ | |
31 | ||
32 | package body Debug is | |
33 | ||
34 | --------------------------------- | |
35 | -- Summary of Debug Flag Usage -- | |
36 | --------------------------------- | |
37 | ||
fbf5a39b | 38 | -- Debug flags for compiler (GNAT1) |
70482933 RK |
39 | |
40 | -- da Generate messages tracking semantic analyzer progress | |
41 | -- db Show encoding of type names for debug output | |
42 | -- dc List names of units as they are compiled | |
43 | -- dd Dynamic allocation of tables messages generated | |
44 | -- de List the entity table | |
45 | -- df Full tree/source print (includes withed units) | |
46 | -- dg Print source from tree (generated code only) | |
47 | -- dh Generate listing showing loading of name table hash chains | |
48 | -- di Generate messages for visibility linking/delinking | |
49 | -- dj Suppress "junk null check" for access parameter values | |
50 | -- dk Generate GNATBUG message on abort, even if previous errors | |
51 | -- dl Generate unit load trace messages | |
52 | -- dm Allow VMS features even if not OpenVMS version | |
53 | -- dn Generate messages for node/list allocation | |
54 | -- do Print source from tree (original code only) | |
55 | -- dp Generate messages for parser scope stack push/pops | |
07fc65c4 | 56 | -- dq No auto-alignment of small records |
70482933 RK |
57 | -- dr Generate parser resynchronization messages |
58 | -- ds Print source from tree (including original and generated stuff) | |
59 | -- dt Print full tree | |
60 | -- du Uncheck categorization pragmas | |
61 | -- dv Output trace of overload resolution | |
62 | -- dw Print trace of semantic scope stack | |
63 | -- dx Force expansion on, even if no code being generated | |
64 | -- dy Print tree of package Standard | |
65 | -- dz Print source of package Standard | |
66 | ||
67 | -- dA All entities included in representation information output | |
68 | -- dB Output debug encoding of type names and variants | |
fbf5a39b | 69 | -- dC Output debugging information on check suppression |
70482933 RK |
70 | -- dD Delete elaboration checks in inner level routines |
71 | -- dE Apply elaboration checks to predefined units | |
b99282c4 | 72 | -- dF Front end data layout enabled |
fbf5a39b | 73 | -- dG Generate all warnings including those normally suppressed |
70482933 RK |
74 | -- dH Hold (kill) call to gigi |
75 | -- dI Inhibit internal name numbering in gnatG listing | |
76 | -- dJ Output debugging trace info for JGNAT (Java VM version of GNAT) | |
77 | -- dK Kill all error messages | |
78 | -- dL Output trace information on elaboration checking | |
fbf5a39b AC |
79 | -- dM Asssume all variables are modified (no current values) |
80 | -- dN No file name information in exception messages | |
70482933 RK |
81 | -- dO Output immediate error messages |
82 | -- dP Do not check for controlled objects in preelaborable packages | |
83 | -- dQ | |
84 | -- dR Bypass check for correct version of s-rpc | |
85 | -- dS Never convert numbers to machine numbers in Sem_Eval | |
86 | -- dT Convert to machine numbers only for constant declarations | |
87 | -- dU Enable garbage collection of unreachable entities | |
88 | -- dV Enable viewing of all symbols in debugger | |
fbf5a39b | 89 | -- dW Disable warnings on calls for IN OUT parameters |
1a2c495d | 90 | -- dX |
fbf5a39b | 91 | -- dY Enable configurable run-time mode |
758c442c | 92 | -- dZ Generate listing showing the contents of the dispatch tables |
70482933 | 93 | |
9fcf2a0b | 94 | -- d.a Force Target_Strict_Alignment mode to True |
fbf5a39b | 95 | -- d.b |
bded454f | 96 | -- d.c Generate inline concatenation, do not call procedure |
fbf5a39b AC |
97 | -- d.d |
98 | -- d.e | |
bde33286 | 99 | -- d.f Inhibit folding of static expressions |
baa3441d | 100 | -- d.g Enable conversion of raise into goto |
fbf5a39b AC |
101 | -- d.h |
102 | -- d.i | |
103 | -- d.j | |
104 | -- d.k | |
ba1cbfb9 RD |
105 | -- d.l Use Ada 95 semantics for limited function returns |
106 | -- d.m For -gnatl, print full source only for main unit | |
fbf5a39b AC |
107 | -- d.n |
108 | -- d.o | |
109 | -- d.p | |
110 | -- d.q | |
1b24ada5 | 111 | -- d.r Enable OK_To_Reorder_Components in non-variant records |
f23585f1 | 112 | -- d.s Disable expansion of slice move, use memmove |
b99282c4 | 113 | -- d.t Disable static allocation of library level dispatch tables |
fbf5a39b | 114 | -- d.u |
1b24ada5 | 115 | -- d.v Enable OK_To_Reorder_Components in variant records |
ba1cbfb9 | 116 | -- d.w Do not check for infinite while loops |
fbf5a39b AC |
117 | -- d.x No exception handlers |
118 | -- d.y | |
119 | -- d.z | |
120 | ||
ba1cbfb9 RD |
121 | -- d.A |
122 | -- d.B | |
bded454f | 123 | -- d.C Generate concatenation call, do not generate inline code |
ba1cbfb9 RD |
124 | -- d.D |
125 | -- d.E | |
126 | -- d.F | |
127 | -- d.G | |
128 | -- d.H | |
a8ee4645 | 129 | -- d.I Inspector mode |
ba1cbfb9 RD |
130 | -- d.J |
131 | -- d.K | |
132 | -- d.L | |
133 | -- d.M | |
134 | -- d.N | |
135 | -- d.O | |
136 | -- d.P | |
137 | -- d.Q | |
138 | -- d.R | |
1b24ada5 RD |
139 | -- d.S Force Optimize_Alignment (Space) |
140 | -- d.T Force Optimize_Alignment (Time) | |
ba1cbfb9 RD |
141 | -- d.U |
142 | -- d.V | |
143 | -- d.W | |
144 | -- d.X | |
145 | -- d.Y | |
146 | -- d.Z | |
147 | ||
70482933 RK |
148 | -- d1 Error msgs have node numbers where possible |
149 | -- d2 Eliminate error flags in verbose form error messages | |
150 | -- d3 Dump bad node in Comperr on an abort | |
151 | -- d4 Inhibit automatic krunch of predefined library unit files | |
152 | -- d5 Debug output for tree read/write | |
153 | -- d6 Default access unconstrained to thin pointers | |
154 | -- d7 Do not output version & file time stamp in -gnatv or -gnatl mode | |
155 | -- d8 Force opposite endianness in packed stuff | |
156 | -- d9 | |
157 | ||
158 | -- Debug flags for binder (GNATBIND) | |
159 | ||
bde33286 | 160 | -- da All links (including internal units) listed if there is a cycle |
ba1cbfb9 | 161 | -- db Output information from Better_Choice |
70482933 RK |
162 | -- dc List units as they are chosen |
163 | -- dd | |
164 | -- de Elaboration dependencies including system units | |
165 | -- df | |
166 | -- dg | |
167 | -- dh | |
2e071734 | 168 | -- di Ignore_Errors mode for reading ali files |
70482933 RK |
169 | -- dj |
170 | -- dk | |
171 | -- dl | |
172 | -- dm | |
173 | -- dn List details of manipulation of Num_Pred values | |
ba1cbfb9 | 174 | -- do Use old preference for elaboration order |
70482933 RK |
175 | -- dp |
176 | -- dq | |
07fc65c4 | 177 | -- dr |
70482933 RK |
178 | -- ds |
179 | -- dt | |
180 | -- du List units as they are acquired | |
181 | -- dv | |
182 | -- dw | |
fbf5a39b | 183 | -- dx Force binder to read xref information from ali files |
70482933 RK |
184 | -- dy |
185 | -- dz | |
186 | ||
70482933 RK |
187 | -- Debug flags used in package Make and its clients (e.g. GNATMAKE) |
188 | ||
189 | -- da | |
190 | -- db | |
191 | -- dc | |
192 | -- dd | |
193 | -- de | |
194 | -- df | |
195 | -- dg | |
196 | -- dh | |
197 | -- di | |
198 | -- dj | |
199 | -- dk | |
200 | -- dl | |
201 | -- dm | |
fbf5a39b | 202 | -- dn Do not delete temp files created by gnatmake |
70482933 RK |
203 | -- do |
204 | -- dp Prints the contents of the Q used by Make.Compile_Sources | |
205 | -- dq Prints source files as they are enqueued and dequeued | |
206 | -- dr | |
207 | -- ds | |
fbf5a39b | 208 | -- dt Display time stamps when there is a mismatch |
07fc65c4 | 209 | -- du List units as their ali files are acquired |
70482933 RK |
210 | -- dv |
211 | -- dw Prints the list of units withed by the unit currently explored | |
212 | -- dx | |
213 | -- dy | |
214 | -- dz | |
215 | ||
70482933 RK |
216 | -------------------------------------------- |
217 | -- Documentation for Compiler Debug Flags -- | |
218 | -------------------------------------------- | |
219 | ||
220 | -- da Generate messages tracking semantic analyzer progress. A message | |
221 | -- is output showing each node as it gets analyzed, expanded, | |
222 | -- resolved, or evaluated. This option is useful for finding out | |
223 | -- exactly where a bomb during semantic analysis is occurring. | |
224 | ||
225 | -- db In Exp_Dbug, certain type names are encoded to include debugging | |
226 | -- information. This debug switch causes lines to be output showing | |
227 | -- the encodings used. | |
228 | ||
229 | -- dc List names of units as they are compiled. One line of output will | |
230 | -- be generated at the start of compiling each unit (package or | |
231 | -- subprogram). | |
232 | ||
233 | -- dd Dynamic allocation of tables messages generated. Each time a | |
234 | -- table is reallocated, a line is output indicating the expansion. | |
235 | ||
70482933 RK |
236 | -- de List the entity table |
237 | ||
238 | -- df Full tree/source print (includes withed units). Normally the tree | |
239 | -- output (dt) or recreated source output (dg,do,ds) includes only | |
240 | -- the main unit. If df is set, then the output in either case | |
241 | -- includes all compiled units (see also dg,do,ds,dt). Note that to | |
242 | -- be effective, this swich must be used in combination with one or | |
243 | -- more of dt, dg, do or ds. | |
244 | ||
70482933 RK |
245 | -- dg Print the source recreated from the generated tree. In the case |
246 | -- where the tree has been rewritten this output includes only the | |
247 | -- generated code, not the original code (see also df,do,ds,dz). | |
248 | -- This flag differs from -gnatG in that the output also includes | |
249 | -- non-source generated null statements, and freeze nodes, which | |
250 | -- are normally omitted in -gnatG mode. | |
251 | ||
70482933 RK |
252 | -- dh Generates a table at the end of a compilation showing how the hash |
253 | -- table chains built by the Namet package are loaded. This is useful | |
254 | -- in ensuring that the hashing algorithm (in Namet.Hash) is working | |
255 | -- effectively with typical sets of program identifiers. | |
256 | ||
70482933 RK |
257 | -- di Generate messages for visibility linking/delinking |
258 | ||
259 | -- dj Suppress "junk null check" for access parameters. This flag permits | |
260 | -- Ada programs to pass null parameters to access parameters, and to | |
261 | -- explicitly check such access values against the null literal. | |
262 | -- Neither of these is valid Ada, but both were allowed in versions of | |
263 | -- GNAT before 3.10, so this switch can ease the transition process. | |
264 | ||
70482933 RK |
265 | -- dk Immediate kill on abort. Normally on an abort (i.e. a call to |
266 | -- Comperr.Compiler_Abort), the GNATBUG message is not given if | |
267 | -- there is a previous error. This debug switch bypasses this test | |
268 | -- and gives the message unconditionally (useful for debugging). | |
269 | ||
70482933 RK |
270 | -- dl Generate unit load trace messages. A line of traceback output is |
271 | -- generated each time a request is made to the library manager to | |
272 | -- load a new unit. | |
273 | ||
274 | -- dm Some features are permitted only in OpenVMS ports of GNAT (e.g. | |
275 | -- the specification of passing by descriptor). Normally any use | |
276 | -- of these features will be flagged as an error, but this debug | |
277 | -- flag allows acceptance of these features in non OpenVMS ports. | |
278 | -- Of course they may not have any useful effect, and in particular | |
279 | -- attempting to generate code with this flag set may blow up. | |
280 | -- The flag also forces the use of 64-bits for Long_Integer. | |
281 | ||
282 | -- dn Generate messages for node/list allocation. Each time a node or | |
283 | -- list header is allocated, a line of output is generated. Certain | |
284 | -- other basic tree operations also cause a line of output to be | |
285 | -- generated. This option is useful in seeing where the parser is | |
5e39baa6 | 286 | -- blowing up. |
70482933 | 287 | |
70482933 RK |
288 | -- do Print the source recreated from the generated tree. In the case |
289 | -- where the tree has been rewritten, this output includes only the | |
290 | -- original code, not the generated code (see also df,dg,ds,dz). | |
291 | ||
292 | -- dp Generate messages for parser scope stack push/pops. A line of | |
293 | -- output by the parser each time the parser scope stack is either | |
294 | -- pushed or popped. Useful in debugging situations where the | |
295 | -- parser scope stack ends up incorrectly synchronized | |
296 | ||
07fc65c4 GB |
297 | -- dq In layout version 1.38, 2002/01/12, a circuit was implemented |
298 | -- to give decent default alignment to short records that had no | |
299 | -- specific alignment set. This debug option restores the previous | |
300 | -- behavior of giving such records poor alignments, typically 1. | |
301 | -- This may be useful in dealing with transition. | |
302 | ||
70482933 RK |
303 | -- dr Generate parser resynchronization messages. Normally the parser |
304 | -- resynchronizes quietly. With this debug option, two messages | |
305 | -- are generated, one when the parser starts a resynchronization | |
306 | -- skip, and another when it resumes parsing. Useful in debugging | |
307 | -- inadequate error recovery situations. | |
308 | ||
309 | -- ds Print the source recreated from the generated tree. In the case | |
310 | -- where the tree has been rewritten this output includes both the | |
311 | -- generated code and the original code with the generated code | |
312 | -- being enlosed in curly brackets (see also df,do,ds,dz) | |
313 | ||
314 | -- dt Print full tree. The generated tree is output (see also df,dy) | |
315 | ||
316 | -- du Uncheck categorization pragmas. This debug switch causes the | |
317 | -- categorization pragmas (Pure, Preelaborate etc) to be ignored | |
318 | -- so that normal checks are not made (this is particularly useful | |
319 | -- for adding temporary debugging code to units that have pragmas | |
320 | -- that are inconsistent with the debugging code added. | |
321 | ||
fbf5a39b AC |
322 | -- dv Output trace of overload resolution. Outputs messages for |
323 | -- overload attempts that involve cascaded errors, or where | |
324 | -- an interepretation is incompatible with the context. | |
325 | ||
70482933 | 326 | -- dw Write semantic scope stack messages. Each time a scope is created |
a99ada67 | 327 | -- or removed, a message is output (see the Sem_Ch8.Push_Scope and |
70482933 RK |
328 | -- Sem_Ch8.Pop_Scope subprograms). |
329 | ||
330 | -- dx Force expansion on, even if no code being generated. Normally the | |
331 | -- expander is inhibited if no code is generated. This switch forces | |
332 | -- expansion to proceed normally even if the backend is not being | |
333 | -- called. This is particularly useful for debugging purposes when | |
334 | -- using the front-end only version of the compiler (which normally | |
335 | -- would never do any expansion). | |
336 | ||
337 | -- dy Print tree of package Standard. Normally the tree print out does | |
338 | -- not include package Standard, even if the -df switch is set. This | |
339 | -- switch forces output of the internal tree built for Standard. | |
340 | ||
341 | -- dz Print source of package Standard. Normally the source print out | |
342 | -- does not include package Standard, even if the -df switch is set. | |
343 | -- This switch forces output of the source recreated from the internal | |
9596236a AC |
344 | -- tree built for Standard. Note that this differs from -gnatS in |
345 | -- that it prints from the actual tree using the normal Sprint | |
346 | -- circuitry for printing trees. | |
70482933 RK |
347 | |
348 | -- dA Forces output of representation information, including full | |
349 | -- information for all internal type and object entities, as well | |
fbf5a39b | 350 | -- as all user defined type and object entities including private |
a4c1cd80 AC |
351 | -- and incomplete types. This debug switch also automatically sets |
352 | -- the equivalent of -gnatR3m. | |
70482933 RK |
353 | |
354 | -- dB Output debug encodings for types and variants. See Exp_Dbug for | |
355 | -- exact form of the generated output. | |
356 | ||
fbf5a39b AC |
357 | -- dC Output trace information showing the decisions made during |
358 | -- check suppression activity in unit Checks. | |
359 | ||
360 | -- dD Delete new elaboration checks. This flag causes GNAT to return | |
361 | -- to the 3.13a elaboration semantics, and to suppress the fixing | |
362 | -- of two bugs. The first is in the context of inner routines in | |
363 | -- dynamic elaboration mode, when the subprogram we are in was | |
364 | -- called at elaboration time by a unit that was also compiled with | |
365 | -- dynamic elaboration checks. In this case, if A calls B calls C, | |
366 | -- and all are in different units, we need an elaboration check at | |
367 | -- each call. These nested checks were only put in recently (see | |
368 | -- version 1.80 of Sem_Elab) and we provide this debug flag to | |
369 | -- revert to the previous behavior in case of regressions. The | |
370 | -- other behavior reverted by this flag is the treatment of the | |
371 | -- Elaborate_Body pragma in static elaboration mode. This used to | |
372 | -- be treated as not needing elaboration checking, but in fact in | |
373 | -- general Elaborate_All is still required because of nested calls. | |
374 | ||
70482933 RK |
375 | -- dE Apply compile time elaboration checking for with relations between |
376 | -- predefined units. Normally no checks are made (it seems that at | |
377 | -- least on the SGI, such checks run into trouble). | |
378 | ||
fbf5a39b AC |
379 | -- dF Front end data layout enabled. Normally front end data layout |
380 | -- is only enabled if the target parameter Backend_Layout is False. | |
381 | -- This debugging switch enables it unconditionally. | |
382 | ||
383 | -- dG Generate all warnings. Normally Errout suppresses warnings on | |
384 | -- units that are not part of the main extended source, and also | |
385 | -- suppresses warnings on instantiations in the main extended | |
386 | -- source that duplicate warnings already posted on the template. | |
387 | -- This switch stops both kinds of deletion and causes Errout to | |
388 | -- post all warnings sent to it. | |
389 | ||
390 | -- dH Inhibit call to gigi. This is useful for testing front end data | |
391 | -- layout, and may be useful in other debugging situations where | |
392 | -- you do not want gigi to intefere with the testing. | |
393 | ||
b99282c4 RD |
394 | -- dI Inhibit internal name numbering in gnatDG listing. Any sequence of |
395 | -- the form <uppercase-letter><digits><lowercase-letter> appearing in | |
396 | -- a name is replaced by <uppercase-letter>...<lowercase-letter>. This | |
397 | -- is used in the fixed bugs run to minimize system and version | |
398 | -- dependency in filed -gnatD or -gnatG output. | |
70482933 | 399 | |
fbf5a39b AC |
400 | -- dJ Generate debugging trace output for the JGNAT back end. This |
401 | -- consists of symbolic Java Byte Code sequences for all generated | |
402 | -- classes plus additional information to indicate local variables | |
403 | -- and methods. | |
404 | ||
405 | -- dK Kill all error messages. This debug flag suppresses the output | |
406 | -- of all error messages. It is used in regression tests where the | |
407 | -- error messages are target dependent and irrelevant. | |
408 | ||
70482933 RK |
409 | -- dL Output trace information on elaboration checking. This debug |
410 | -- switch causes output to be generated showing each call or | |
411 | -- instantiation as it is checked, and the progress of the recursive | |
412 | -- trace through calls at elaboration time. | |
413 | ||
fbf5a39b AC |
414 | -- dM Assume all variables have been modified, and ignore current value |
415 | -- indications. This debug flag disconnects the tracking of constant | |
416 | -- values (see Exp_Ch2.Expand_Current_Value). | |
417 | ||
bde33286 | 418 | -- dN Do not generate file name information in exception messages |
fbf5a39b | 419 | |
70482933 RK |
420 | -- dO Output immediate error messages. This causes error messages to |
421 | -- be output as soon as they are generated (disconnecting several | |
422 | -- circuits for improvement of messages, deletion of duplicate | |
423 | -- messages etc). Useful to diagnose compiler bombs caused by | |
424 | -- erroneous handling of error situations | |
425 | ||
426 | -- dP Do not check for controlled objects in preelaborable packages. | |
427 | -- RM 10.2.1(9) forbids the use of library level controlled objects | |
428 | -- in preelaborable packages, but this restriction is a huge pain, | |
429 | -- especially in the predefined library units. | |
430 | ||
ba1cbfb9 RD |
431 | -- dQ needs full documentation ??? |
432 | ||
70482933 RK |
433 | -- dR Bypass the check for a proper version of s-rpc being present |
434 | -- to use the -gnatz? switch. This allows debugging of the use | |
435 | -- of stubs generation without needing to have GLADE (or some | |
436 | -- other PCS installed). | |
437 | ||
438 | -- dS Omit conversion of fpt numbers to exact machine numbers in | |
439 | -- non-static evaluation contexts (see Check_Non_Static_Context). | |
440 | -- This is intended for testing out timing problems with this | |
441 | -- conversion circuit. | |
442 | ||
443 | -- dT Similar to dS, but omits the conversions only in the case where | |
444 | -- the parent is not a constant declaration. | |
445 | ||
446 | -- dU Enable garbage collection of unreachable entities. This enables | |
447 | -- both the reachability analysis and changing the Is_Public and | |
448 | -- Is_Eliminated flags. | |
449 | ||
450 | -- dV Enable viewing of all symbols in debugger. Causes debug information | |
451 | -- to be generated for all symbols, including internal symbols. This | |
452 | -- is enabled by default for -gnatD, but this switch allows this to | |
453 | -- be enabled without generating modified source files. Note that the | |
454 | -- use of -gnatdV ensures in the dwarf/elf case that all symbols that | |
455 | -- are present in the elf tables are also in the dwarf tables (which | |
fbf5a39b AC |
456 | -- seems to be required by some tools). Another effect of dV is to |
457 | -- generate full qualified names, including internal names generated | |
458 | -- for blocks and loops. | |
459 | ||
460 | -- dW Disable warnings when a possibly uninitialized scalar value is | |
461 | -- passed to an IN OUT parameter of a procedure. This usage is a | |
462 | -- quite improper bounded error [erroneous in Ada 83] situation, | |
463 | -- and would normally generate a warning. However, to ease the | |
464 | -- task of transitioning incorrect legacy code, we provide this | |
465 | -- undocumented feature for suppressing these warnings. | |
70482933 | 466 | |
fbf5a39b AC |
467 | -- dY Enable configurable run-time mode, just as though the System file |
468 | -- had Configurable_Run_Time_Mode set to True. This is useful in | |
469 | -- testing high integrity mode. | |
470 | ||
b99282c4 RD |
471 | -- dZ Generate listing showing the contents of the dispatch tables. Each |
472 | -- line has an internally generated number used for references between | |
473 | -- tagged types and primitives. For each primitive the output has the | |
474 | -- following fields: | |
1b24ada5 | 475 | -- |
b99282c4 RD |
476 | -- - Letter 'P' or letter 's': The former indicates that this |
477 | -- primitive will be located in a primary dispatch table. The | |
478 | -- latter indicates that it will be located in a secondary | |
479 | -- dispatch table. | |
1b24ada5 | 480 | -- |
b99282c4 RD |
481 | -- - Name of the primitive. In case of predefined Ada primitives |
482 | -- the text "(predefined)" is added before the name, and these | |
483 | -- acronyms are used: SR (Stream_Read), SW (Stream_Write), SI | |
484 | -- (Stream_Input), SO (Stream_Output), DA (Deep_Adjust), DF | |
485 | -- (Deep_Finalize). In addition Oeq identifies the equality | |
486 | -- operator, and "_assign" the assignment. | |
1b24ada5 | 487 | -- |
b99282c4 RD |
488 | -- - If the primitive covers interface types, two extra fields |
489 | -- referencing other primitives are generated: "Alias" references | |
490 | -- the primitive of the tagged type that covers an interface | |
491 | -- primitive, and "AI_Alias" references the covered interface | |
492 | -- primitive. | |
1b24ada5 | 493 | -- |
b99282c4 RD |
494 | -- - The expression "at #xx" indicates the slot of the dispatch |
495 | -- table occupied by such primitive in its corresponding primary | |
496 | -- or secondary dispatch table. | |
1b24ada5 | 497 | -- |
b99282c4 RD |
498 | -- - In case of abstract subprograms the text "is abstract" is |
499 | -- added at the end of the line. | |
500 | ||
9fcf2a0b AC |
501 | -- d.a Force Target_Strict_Alignment to True, even on targets where it |
502 | -- would normally be false. Can be used for testing strict alignment | |
503 | -- circuitry in the compiler. | |
504 | ||
bded454f RD |
505 | -- d.c Generate inline concatenation, instead of calling one of the |
506 | -- System.Concat_n.Str_Concat_n routines in cases where the latter | |
507 | -- routines would normally be called. | |
508 | ||
bde33286 RD |
509 | -- d.f Suppress folding of static expressions. This of course results |
510 | -- in seriously non-conforming behavior, but is useful sometimes | |
511 | -- when tracking down handling of complex expressions. | |
512 | ||
baa3441d RD |
513 | -- d.g Enables conversion of a raise statement into a goto when the |
514 | -- relevant handler is statically determinable. For now we only try | |
515 | -- this if this debug flag is set. Later we will enable this more | |
516 | -- generally by default. | |
517 | ||
ba1cbfb9 RD |
518 | -- d.l Use Ada 95 semantics for limited function returns. This may be |
519 | -- used to work around the incompatibility introduced by AI-318-2. | |
520 | -- It is useful only in -gnat05 mode. | |
521 | ||
522 | -- d.m When -gnatl is used, the normal output includes full listings of | |
523 | -- all files in the extended main source (body/spec/subunits). If this | |
524 | -- debug switch is used, then the full listing is given only for the | |
525 | -- main source (this corresponds to a previous behavior of -gnatl and | |
526 | -- is used for running the ACATS tests). | |
527 | ||
1b24ada5 RD |
528 | -- d.r Forces the flag OK_To_Reorder_Components to be set in all record |
529 | -- base types that have no discriminants. | |
530 | ||
f23585f1 RD |
531 | -- d.s Normally the compiler expands slice moves into loops if overlap |
532 | -- might be possible. This debug flag inhibits that expansion, and | |
533 | -- the back end is expected to use an appropriate routine to handle | |
534 | -- overlap, based on Forward_OK and Backwards_OK flags. | |
535 | ||
b99282c4 RD |
536 | -- d.t The compiler has been modified (a fairly extensive modification) |
537 | -- to generate static dispatch tables for library level tagged types. | |
538 | -- This debug switch disables this modification and reverts to the | |
539 | -- previous dynamic construction of tables. It is there as a possible | |
540 | -- work around if we run into trouble with the new implementation. | |
541 | ||
1b24ada5 RD |
542 | -- d.v Forces the flag OK_To_Reorder_Components to be set in all record |
543 | -- base types that have at least one discriminant (v = variant). | |
544 | ||
ba1cbfb9 RD |
545 | -- d.w This flag turns off the scanning of while loops to detect possible |
546 | -- infinite loops. | |
547 | ||
fbf5a39b | 548 | -- d.x No exception handlers in generated code. This causes exception |
5c1c8a03 | 549 | -- handlers to be eliminated from the generated code. They are still |
fbf5a39b AC |
550 | -- fully compiled and analyzed, they just get eliminated from the |
551 | -- code generation step. | |
552 | ||
bded454f RD |
553 | -- d.C Generate call to System.Concat_n.Str_Concat_n routines in cases |
554 | -- where we would normally generate inline concatenation code. | |
555 | ||
a8ee4645 TG |
556 | -- d.I Inspector mode. Relevant for VM_Target /= None. Try to generate |
557 | -- byte code, even in case of unsupported construct, for the sake | |
558 | -- of static analysis tools. | |
559 | ||
1b24ada5 RD |
560 | -- d.S Force Optimize_Alignment (Space) mode as the default |
561 | ||
562 | -- d.T Force Optimize_Alignment (Time) mode as the default | |
563 | ||
fbf5a39b | 564 | -- d1 Error messages have node numbers where possible. Normally error |
70482933 RK |
565 | -- messages have only source locations. This option is useful when |
566 | -- debugging errors caused by expanded code, where the source location | |
567 | -- does not give enough information. | |
568 | ||
569 | -- d2 Suppress output of the error position flags for verbose form error | |
570 | -- messages. The messages are still interspersed in the listing, but | |
571 | -- without any error flags or extra blank lines. Also causes an extra | |
572 | -- <<< to be output at the right margin. This is intended to be the | |
fbf5a39b AC |
573 | -- easiest format for checking conformance of ACATS B tests. This |
574 | -- flag also suppresses the additional messages explaining why a | |
575 | -- non-static expression is non-static (see Sem_Eval.Why_Not_Static). | |
576 | -- This avoids having to worry about these messages in ACATS testing. | |
70482933 RK |
577 | |
578 | -- d3 Causes Comperr to dump the contents of the node for which an abort | |
579 | -- was detected (normally only the Node_Id of the node is output). | |
580 | ||
581 | -- d4 Inhibits automatic krunching of predefined library unit file names. | |
582 | -- Normally, as described in the spec of package Krunch, such files | |
583 | -- are automatically krunched to 8 characters, with special treatment | |
584 | -- of the prefixes Ada, System, and Interfaces. Setting this debug | |
585 | -- switch disables this special treatment. | |
586 | ||
fbf5a39b AC |
587 | -- d5 Causes the tree read/write circuit to output detailed information |
588 | -- tracking the data that is read and written element by element. | |
589 | ||
70482933 RK |
590 | -- d6 Normally access-to-unconstrained-array types are represented |
591 | -- using fat (double) pointers. Using this debug flag causes them | |
592 | -- to default to thin. This can be used to test the performance | |
593 | -- implications of using thin pointers, and also to test that the | |
594 | -- compiler functions correctly with this choice. | |
595 | ||
596 | -- d7 Normally a -gnatl or -gnatv listing includes the time stamp | |
597 | -- of the source file. This debug flag suppresses this output, | |
598 | -- and also suppresses the message with the version number. | |
599 | -- This is useful in certain regression tests. | |
600 | ||
601 | -- d8 This forces the packed stuff to generate code assuming the | |
602 | -- opposite endianness from the actual correct value. Useful in | |
603 | -- testing out code generation from the packed routines. | |
604 | ||
605 | ------------------------------------------ | |
606 | -- Documentation for Binder Debug Flags -- | |
607 | ------------------------------------------ | |
608 | ||
bde33286 RD |
609 | -- da Normally if there is an elaboration circularity, then in describing |
610 | -- the cycle, links involving internal units are omitted, since they | |
611 | -- are irrelevant and confusing. This debug flag causes all links to | |
612 | -- be listed, and is useful when diagnosing circularities introduced | |
613 | -- by incorrect changes to the run-time library itself. | |
614 | ||
70482933 RK |
615 | -- dc List units as they are chosen. As units are selected for addition to |
616 | -- the elaboration order, a line of output is generated showing which | |
617 | -- unit has been selected. | |
618 | ||
619 | -- de Similar to the effect of -e (output complete list of elaboration | |
620 | -- dependencies) except that internal units are included in the | |
621 | -- listing. | |
622 | ||
2e071734 AC |
623 | -- di Normally gnatbind calls Read_Ali with Ignore_Errors set to |
624 | -- False, since the binder really needs correct version ALI | |
625 | -- files to do its job. This debug flag causes Ignore_Errors | |
626 | -- mode to be set for the binder (and is particularly useful | |
627 | -- for testing ignore errors mode). | |
628 | ||
70482933 RK |
629 | -- dn List details of manipulation of Num_Pred values during execution of |
630 | -- the algorithm used to determine a correct order of elaboration. This | |
631 | -- is useful in diagnosing any problems in its behavior. | |
632 | ||
ba1cbfb9 RD |
633 | -- do Use old elaboration order preference. The new preference rules |
634 | -- prefer specs with no bodies to specs with bodies, and between two | |
635 | -- specs with bodies, prefers the one whose body is closer to being | |
636 | -- able to be elaborated. This is a clear improvement, but we provide | |
637 | -- this debug flag in case of regressions. | |
638 | ||
70482933 RK |
639 | -- du List unit name and file name for each unit as it is read in |
640 | ||
fbf5a39b AC |
641 | -- dx Force the binder to read (and then ignore) the xref information |
642 | -- in ali files (used to check that read circuit is working OK). | |
643 | ||
34a343e6 RD |
644 | -------------------------------------------- |
645 | -- Documentation for gnatmake Debug Flags -- | |
646 | -------------------------------------------- | |
70482933 | 647 | |
1a5f40e1 VC |
648 | -- df Only output file names, not path names, in log |
649 | ||
34a343e6 | 650 | -- dn Do not delete temporary files created by gnatmake at the end |
fbf5a39b AC |
651 | -- of execution, such as temporary config pragma files, mapping |
652 | -- files or project path files. | |
653 | ||
70482933 RK |
654 | -- dp Prints the Q used by routine Make.Compile_Sources every time |
655 | -- we go around the main compile loop of Make.Compile_Sources | |
656 | ||
657 | -- dq Prints source files as they are enqueued and dequeued in the Q | |
658 | -- used by routine Make.Compile_Sources. Useful to figure out the | |
659 | -- order in which sources are recompiled. | |
660 | ||
fbf5a39b AC |
661 | -- dt When a time stamp mismatch has been found for an ALI file, |
662 | -- display the source file name, the time stamp expected and | |
663 | -- the time stamp found. | |
664 | ||
665 | -- du List unit name and file name for each unit as it is read in | |
666 | ||
70482933 RK |
667 | -- dw Prints the list of units withed by the unit currently explored |
668 | -- during the main loop of Make.Compile_Sources. | |
669 | ||
34a343e6 RD |
670 | --------------------------------------------- |
671 | -- Documentation for gprbuild Debug Flags -- | |
672 | --------------------------------------------- | |
673 | ||
674 | -- dn Do not delete temporary files createed by gprbuild at the end | |
675 | -- of execution, such as temporary config pragma files, mapping | |
676 | -- files or project path files. | |
677 | ||
678 | -- dt When a time stamp mismatch has been found for an ALI file, | |
679 | -- display the source file name, the time stamp expected and | |
680 | -- the time stamp found. | |
681 | ||
70482933 RK |
682 | -------------------- |
683 | -- Set_Debug_Flag -- | |
684 | -------------------- | |
685 | ||
686 | procedure Set_Debug_Flag (C : Character; Val : Boolean := True) is | |
687 | subtype Dig is Character range '1' .. '9'; | |
688 | subtype LLet is Character range 'a' .. 'z'; | |
689 | subtype ULet is Character range 'A' .. 'Z'; | |
690 | ||
691 | begin | |
692 | if C in Dig then | |
693 | case Dig (C) is | |
694 | when '1' => Debug_Flag_1 := Val; | |
695 | when '2' => Debug_Flag_2 := Val; | |
696 | when '3' => Debug_Flag_3 := Val; | |
697 | when '4' => Debug_Flag_4 := Val; | |
698 | when '5' => Debug_Flag_5 := Val; | |
699 | when '6' => Debug_Flag_6 := Val; | |
700 | when '7' => Debug_Flag_7 := Val; | |
701 | when '8' => Debug_Flag_8 := Val; | |
702 | when '9' => Debug_Flag_9 := Val; | |
703 | end case; | |
704 | ||
705 | elsif C in ULet then | |
706 | case ULet (C) is | |
707 | when 'A' => Debug_Flag_AA := Val; | |
708 | when 'B' => Debug_Flag_BB := Val; | |
709 | when 'C' => Debug_Flag_CC := Val; | |
710 | when 'D' => Debug_Flag_DD := Val; | |
711 | when 'E' => Debug_Flag_EE := Val; | |
712 | when 'F' => Debug_Flag_FF := Val; | |
713 | when 'G' => Debug_Flag_GG := Val; | |
714 | when 'H' => Debug_Flag_HH := Val; | |
715 | when 'I' => Debug_Flag_II := Val; | |
716 | when 'J' => Debug_Flag_JJ := Val; | |
717 | when 'K' => Debug_Flag_KK := Val; | |
718 | when 'L' => Debug_Flag_LL := Val; | |
719 | when 'M' => Debug_Flag_MM := Val; | |
720 | when 'N' => Debug_Flag_NN := Val; | |
721 | when 'O' => Debug_Flag_OO := Val; | |
722 | when 'P' => Debug_Flag_PP := Val; | |
723 | when 'Q' => Debug_Flag_QQ := Val; | |
724 | when 'R' => Debug_Flag_RR := Val; | |
725 | when 'S' => Debug_Flag_SS := Val; | |
726 | when 'T' => Debug_Flag_TT := Val; | |
727 | when 'U' => Debug_Flag_UU := Val; | |
728 | when 'V' => Debug_Flag_VV := Val; | |
729 | when 'W' => Debug_Flag_WW := Val; | |
730 | when 'X' => Debug_Flag_XX := Val; | |
731 | when 'Y' => Debug_Flag_YY := Val; | |
732 | when 'Z' => Debug_Flag_ZZ := Val; | |
733 | end case; | |
734 | ||
735 | else | |
736 | case LLet (C) is | |
737 | when 'a' => Debug_Flag_A := Val; | |
738 | when 'b' => Debug_Flag_B := Val; | |
739 | when 'c' => Debug_Flag_C := Val; | |
740 | when 'd' => Debug_Flag_D := Val; | |
741 | when 'e' => Debug_Flag_E := Val; | |
742 | when 'f' => Debug_Flag_F := Val; | |
743 | when 'g' => Debug_Flag_G := Val; | |
744 | when 'h' => Debug_Flag_H := Val; | |
745 | when 'i' => Debug_Flag_I := Val; | |
746 | when 'j' => Debug_Flag_J := Val; | |
747 | when 'k' => Debug_Flag_K := Val; | |
748 | when 'l' => Debug_Flag_L := Val; | |
749 | when 'm' => Debug_Flag_M := Val; | |
750 | when 'n' => Debug_Flag_N := Val; | |
751 | when 'o' => Debug_Flag_O := Val; | |
752 | when 'p' => Debug_Flag_P := Val; | |
753 | when 'q' => Debug_Flag_Q := Val; | |
754 | when 'r' => Debug_Flag_R := Val; | |
755 | when 's' => Debug_Flag_S := Val; | |
756 | when 't' => Debug_Flag_T := Val; | |
757 | when 'u' => Debug_Flag_U := Val; | |
758 | when 'v' => Debug_Flag_V := Val; | |
759 | when 'w' => Debug_Flag_W := Val; | |
760 | when 'x' => Debug_Flag_X := Val; | |
761 | when 'y' => Debug_Flag_Y := Val; | |
762 | when 'z' => Debug_Flag_Z := Val; | |
763 | end case; | |
764 | end if; | |
765 | end Set_Debug_Flag; | |
766 | ||
fbf5a39b AC |
767 | --------------------------- |
768 | -- Set_Dotted_Debug_Flag -- | |
769 | --------------------------- | |
770 | ||
771 | procedure Set_Dotted_Debug_Flag (C : Character; Val : Boolean := True) is | |
772 | subtype Dig is Character range '1' .. '9'; | |
773 | subtype LLet is Character range 'a' .. 'z'; | |
774 | subtype ULet is Character range 'A' .. 'Z'; | |
775 | ||
776 | begin | |
777 | if C in Dig then | |
778 | case Dig (C) is | |
779 | when '1' => Debug_Flag_Dot_1 := Val; | |
780 | when '2' => Debug_Flag_Dot_2 := Val; | |
781 | when '3' => Debug_Flag_Dot_3 := Val; | |
782 | when '4' => Debug_Flag_Dot_4 := Val; | |
783 | when '5' => Debug_Flag_Dot_5 := Val; | |
784 | when '6' => Debug_Flag_Dot_6 := Val; | |
785 | when '7' => Debug_Flag_Dot_7 := Val; | |
786 | when '8' => Debug_Flag_Dot_8 := Val; | |
787 | when '9' => Debug_Flag_Dot_9 := Val; | |
788 | end case; | |
789 | ||
790 | elsif C in ULet then | |
791 | case ULet (C) is | |
792 | when 'A' => Debug_Flag_Dot_AA := Val; | |
793 | when 'B' => Debug_Flag_Dot_BB := Val; | |
794 | when 'C' => Debug_Flag_Dot_CC := Val; | |
795 | when 'D' => Debug_Flag_Dot_DD := Val; | |
796 | when 'E' => Debug_Flag_Dot_EE := Val; | |
797 | when 'F' => Debug_Flag_Dot_FF := Val; | |
798 | when 'G' => Debug_Flag_Dot_GG := Val; | |
799 | when 'H' => Debug_Flag_Dot_HH := Val; | |
800 | when 'I' => Debug_Flag_Dot_II := Val; | |
801 | when 'J' => Debug_Flag_Dot_JJ := Val; | |
802 | when 'K' => Debug_Flag_Dot_KK := Val; | |
803 | when 'L' => Debug_Flag_Dot_LL := Val; | |
804 | when 'M' => Debug_Flag_Dot_MM := Val; | |
805 | when 'N' => Debug_Flag_Dot_NN := Val; | |
806 | when 'O' => Debug_Flag_Dot_OO := Val; | |
807 | when 'P' => Debug_Flag_Dot_PP := Val; | |
808 | when 'Q' => Debug_Flag_Dot_QQ := Val; | |
809 | when 'R' => Debug_Flag_Dot_RR := Val; | |
810 | when 'S' => Debug_Flag_Dot_SS := Val; | |
811 | when 'T' => Debug_Flag_Dot_TT := Val; | |
812 | when 'U' => Debug_Flag_Dot_UU := Val; | |
813 | when 'V' => Debug_Flag_Dot_VV := Val; | |
814 | when 'W' => Debug_Flag_Dot_WW := Val; | |
815 | when 'X' => Debug_Flag_Dot_XX := Val; | |
816 | when 'Y' => Debug_Flag_Dot_YY := Val; | |
817 | when 'Z' => Debug_Flag_Dot_ZZ := Val; | |
818 | end case; | |
819 | ||
820 | else | |
821 | case LLet (C) is | |
822 | when 'a' => Debug_Flag_Dot_A := Val; | |
823 | when 'b' => Debug_Flag_Dot_B := Val; | |
824 | when 'c' => Debug_Flag_Dot_C := Val; | |
825 | when 'd' => Debug_Flag_Dot_D := Val; | |
826 | when 'e' => Debug_Flag_Dot_E := Val; | |
827 | when 'f' => Debug_Flag_Dot_F := Val; | |
828 | when 'g' => Debug_Flag_Dot_G := Val; | |
829 | when 'h' => Debug_Flag_Dot_H := Val; | |
830 | when 'i' => Debug_Flag_Dot_I := Val; | |
831 | when 'j' => Debug_Flag_Dot_J := Val; | |
832 | when 'k' => Debug_Flag_Dot_K := Val; | |
833 | when 'l' => Debug_Flag_Dot_L := Val; | |
834 | when 'm' => Debug_Flag_Dot_M := Val; | |
835 | when 'n' => Debug_Flag_Dot_N := Val; | |
836 | when 'o' => Debug_Flag_Dot_O := Val; | |
837 | when 'p' => Debug_Flag_Dot_P := Val; | |
838 | when 'q' => Debug_Flag_Dot_Q := Val; | |
839 | when 'r' => Debug_Flag_Dot_R := Val; | |
840 | when 's' => Debug_Flag_Dot_S := Val; | |
841 | when 't' => Debug_Flag_Dot_T := Val; | |
842 | when 'u' => Debug_Flag_Dot_U := Val; | |
843 | when 'v' => Debug_Flag_Dot_V := Val; | |
844 | when 'w' => Debug_Flag_Dot_W := Val; | |
845 | when 'x' => Debug_Flag_Dot_X := Val; | |
846 | when 'y' => Debug_Flag_Dot_Y := Val; | |
847 | when 'z' => Debug_Flag_Dot_Z := Val; | |
848 | end case; | |
849 | end if; | |
850 | end Set_Dotted_Debug_Flag; | |
851 | ||
70482933 | 852 | end Debug; |