-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2004 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
+-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- dC Output debugging information on check suppression
-- dD Delete elaboration checks in inner level routines
-- dE Apply elaboration checks to predefined units
- -- dF Front end data layout enabled.
+ -- dF Front end data layout enabled
-- dG Generate all warnings including those normally suppressed
-- dH Hold (kill) call to gigi
-- dI Inhibit internal name numbering in gnatG listing
-- dU Enable garbage collection of unreachable entities
-- dV Enable viewing of all symbols in debugger
-- dW Disable warnings on calls for IN OUT parameters
- -- dX Enable Frontend ZCX even when it is not supported
+ -- dX Display messages on reads of potentially uninitialized scalars
-- dY Enable configurable run-time mode
- -- dZ
+ -- dZ Generate listing showing the contents of the dispatch tables
- -- d.a
+ -- d.a Force Target_Strict_Alignment mode to True
-- d.b
- -- d.c
+ -- d.c Generate inline concatenation, do not call procedure
-- d.d
-- d.e
- -- d.f
- -- d.g
+ -- d.f Inhibit folding of static expressions
+ -- d.g Enable conversion of raise into goto
-- d.h
-- d.i
-- d.j
-- d.k
- -- d.l
- -- d.m
- -- d.n
+ -- d.l Use Ada 95 semantics for limited function returns
+ -- d.m For -gnatl, print full source only for main unit
+ -- d.n Print source file names
-- d.o
-- d.p
-- d.q
- -- d.r
- -- d.s
- -- d.t
+ -- d.r Enable OK_To_Reorder_Components in non-variant records
+ -- d.s Disable expansion of slice move, use memmove
+ -- d.t Disable static allocation of library level dispatch tables
-- d.u
- -- d.v
- -- d.w
+ -- d.v Enable OK_To_Reorder_Components in variant records
+ -- d.w Do not check for infinite while loops
-- d.x No exception handlers
-- d.y
-- d.z
-
+ -- d.A
+ -- d.B
+ -- d.C Generate concatenation call, do not generate inline code
+ -- d.D
+ -- d.E
+ -- d.F
+ -- d.G
+ -- d.H
+ -- d.I SCIL generation mode
+ -- d.J Parallel SCIL generation mode
+ -- d.K
+ -- d.L
+ -- d.M
+ -- d.N
+ -- d.O Dump internal SCO tables
+ -- d.P
+ -- d.Q
+ -- d.R
+ -- d.S Force Optimize_Alignment (Space)
+ -- d.T Force Optimize_Alignment (Time)
+ -- d.U
+ -- d.V
+ -- d.W Print out debugging information for Walk_Library_Items
+ -- d.X
+ -- d.Y
+ -- d.Z
-- d1 Error msgs have node numbers where possible
-- d2 Eliminate error flags in verbose form error messages
-- Debug flags for binder (GNATBIND)
- -- da
- -- db
+ -- da All links (including internal units) listed if there is a cycle
+ -- db Output information from Better_Choice
-- dc List units as they are chosen
-- dd
-- de Elaboration dependencies including system units
-- dl
-- dm
-- dn List details of manipulation of Num_Pred values
- -- do
+ -- do Use old preference for elaboration order
-- dp
-- dq
-- dr
-- dy
-- dz
- -- d1
- -- d2
- -- d3
- -- d4
- -- d5
- -- d6
- -- d7
- -- d8
- -- d9
-
-- Debug flags used in package Make and its clients (e.g. GNATMAKE)
-- da
-- dc
-- dd
-- de
- -- df
+ -- df Only output file names, not path names, in log
-- dg
-- dh
-- di
-- dy
-- dz
- -- d1
- -- d2
- -- d3
- -- d4
- -- d5
- -- d6
- -- d7
- -- d8
- -- d9
-
--------------------------------------------
-- Documentation for Compiler Debug Flags --
--------------------------------------------
-- list header is allocated, a line of output is generated. Certain
-- other basic tree operations also cause a line of output to be
-- generated. This option is useful in seeing where the parser is
- -- blowing up.;
+ -- blowing up.
-- do Print the source recreated from the generated tree. In the case
-- where the tree has been rewritten, this output includes only the
-- an interepretation is incompatible with the context.
-- dw Write semantic scope stack messages. Each time a scope is created
- -- or removed, a message is output (see the Sem_Ch8.New_Scope and
+ -- or removed, a message is output (see the Sem_Ch8.Push_Scope and
-- Sem_Ch8.Pop_Scope subprograms).
-- dx Force expansion on, even if no code being generated. Normally the
-- dA Forces output of representation information, including full
-- information for all internal type and object entities, as well
-- as all user defined type and object entities including private
- -- and incomplete types.
+ -- and incomplete types. This debug switch also automatically sets
+ -- the equivalent of -gnatR3m.
-- dB Output debug encodings for types and variants. See Exp_Dbug for
-- exact form of the generated output.
-- layout, and may be useful in other debugging situations where
-- you do not want gigi to intefere with the testing.
- -- dI Inhibit internal name numbering in gnatDG listing. For internal
- -- names of the form <uppercase-letters><digits><suffix>, the output
- -- will be modified to <uppercase-letters>...<suffix>. This is used
- -- in the fixed bugs run to minimize system and version dependency
- -- in filed -gnatDG output.
+ -- dI Inhibit internal name numbering in gnatDG listing. Any sequence of
+ -- the form <uppercase-letter><digits><lowercase-letter> appearing in
+ -- a name is replaced by <uppercase-letter>...<lowercase-letter>. This
+ -- is used in the fixed bugs run to minimize system and version
+ -- dependency in filed -gnatD or -gnatG output.
-- dJ Generate debugging trace output for the JGNAT back end. This
-- consists of symbolic Java Byte Code sequences for all generated
-- indications. This debug flag disconnects the tracking of constant
-- values (see Exp_Ch2.Expand_Current_Value).
- -- dN Do not generate file name information in exception messages.
+ -- dN Do not generate file name information in exception messages
-- dO Output immediate error messages. This causes error messages to
-- be output as soon as they are generated (disconnecting several
-- task of transitioning incorrect legacy code, we provide this
-- undocumented feature for suppressing these warnings.
- -- dX Enable frontend ZCX even when it is not supported. Equivalent to
- -- -gnatZ but without verifying that System.Front_End_ZCX_Support
- -- is set. This causes the front end to generate suitable tables
- -- for ZCX handling even when the runtime cannot handle ZCX. This
- -- is used for testing the front end for correct ZCX operation, and
- -- in particular is useful for multi-target testing.
-
-- dY Enable configurable run-time mode, just as though the System file
-- had Configurable_Run_Time_Mode set to True. This is useful in
-- testing high integrity mode.
+ -- dZ Generate listing showing the contents of the dispatch tables. Each
+ -- line has an internally generated number used for references between
+ -- tagged types and primitives. For each primitive the output has the
+ -- following fields:
+ --
+ -- - Letter 'P' or letter 's': The former indicates that this
+ -- primitive will be located in a primary dispatch table. The
+ -- latter indicates that it will be located in a secondary
+ -- dispatch table.
+ --
+ -- - Name of the primitive. In case of predefined Ada primitives
+ -- the text "(predefined)" is added before the name, and these
+ -- acronyms are used: SR (Stream_Read), SW (Stream_Write), SI
+ -- (Stream_Input), SO (Stream_Output), DA (Deep_Adjust), DF
+ -- (Deep_Finalize). In addition Oeq identifies the equality
+ -- operator, and "_assign" the assignment.
+ --
+ -- - If the primitive covers interface types, two extra fields
+ -- referencing other primitives are generated: "Alias" references
+ -- the primitive of the tagged type that covers an interface
+ -- primitive, and "AI_Alias" references the covered interface
+ -- primitive.
+ --
+ -- - The expression "at #xx" indicates the slot of the dispatch
+ -- table occupied by such primitive in its corresponding primary
+ -- or secondary dispatch table.
+ --
+ -- - In case of abstract subprograms the text "is abstract" is
+ -- added at the end of the line.
+
+ -- d.a Force Target_Strict_Alignment to True, even on targets where it
+ -- would normally be false. Can be used for testing strict alignment
+ -- circuitry in the compiler.
+
+ -- d.c Generate inline concatenation, instead of calling one of the
+ -- System.Concat_n.Str_Concat_n routines in cases where the latter
+ -- routines would normally be called.
+
+ -- d.f Suppress folding of static expressions. This of course results
+ -- in seriously non-conforming behavior, but is useful sometimes
+ -- when tracking down handling of complex expressions.
+
+ -- d.g Enables conversion of a raise statement into a goto when the
+ -- relevant handler is statically determinable. For now we only try
+ -- this if this debug flag is set. Later we will enable this more
+ -- generally by default.
+
+ -- d.l Use Ada 95 semantics for limited function returns. This may be
+ -- used to work around the incompatibility introduced by AI-318-2.
+ -- It is useful only in -gnat05 mode.
+
+ -- d.m When -gnatl is used, the normal output includes full listings of
+ -- all files in the extended main source (body/spec/subunits). If this
+ -- debug switch is used, then the full listing is given only for the
+ -- main source (this corresponds to a previous behavior of -gnatl and
+ -- is used for running the ACATS tests).
+
+ -- d.n Print source file names as they are loaded. This is useful if the
+ -- compiler has a bug -- these are the files that need to be included
+ -- in a bug report.
+
+ -- d.r Forces the flag OK_To_Reorder_Components to be set in all record
+ -- base types that have no discriminants.
+
+ -- d.s Normally the compiler expands slice moves into loops if overlap
+ -- might be possible. This debug flag inhibits that expansion, and
+ -- the back end is expected to use an appropriate routine to handle
+ -- overlap, based on Forward_OK and Backwards_OK flags.
+
+ -- d.t The compiler has been modified (a fairly extensive modification)
+ -- to generate static dispatch tables for library level tagged types.
+ -- This debug switch disables this modification and reverts to the
+ -- previous dynamic construction of tables. It is there as a possible
+ -- work around if we run into trouble with the new implementation.
+
+ -- d.v Forces the flag OK_To_Reorder_Components to be set in all record
+ -- base types that have at least one discriminant (v = variant).
+
+ -- d.w This flag turns off the scanning of while loops to detect possible
+ -- infinite loops.
+
-- d.x No exception handlers in generated code. This causes exception
-- handlers to be eliminated from the generated code. They are still
-- fully compiled and analyzed, they just get eliminated from the
-- code generation step.
+ -- d.C Generate call to System.Concat_n.Str_Concat_n routines in cases
+ -- where we would normally generate inline concatenation code.
+
+ -- d.I Generate SCIL mode. Generate intermediate code for the sake of
+ -- of static analysis tools, and ensure additional tree consistency
+ -- between different compilations of specs.
+
+ -- d.J Ensure the SCIL generated is compatible with parallel builds.
+ -- This means in particular not writing the same files under the
+ -- same directory.
+
+ -- d.O Dump internal SCO tables. Before outputting the SCO information to
+ -- the ALI file, the internal SCO tables (SCO_Table/SCO_Unit_Table)
+ -- are dumped for debugging purposes.
+
+ -- d.S Force Optimize_Alignment (Space) mode as the default
+
+ -- d.T Force Optimize_Alignment (Time) mode as the default
+
+ -- d.W Print out debugging information for Walk_Library_Items, including
+ -- the order in which units are walked. This is primarily for SofCheck
+ -- Inspector.
+
-- d1 Error messages have node numbers where possible. Normally error
-- messages have only source locations. This option is useful when
-- debugging errors caused by expanded code, where the source location
-- Documentation for Binder Debug Flags --
------------------------------------------
+ -- da Normally if there is an elaboration circularity, then in describing
+ -- the cycle, links involving internal units are omitted, since they
+ -- are irrelevant and confusing. This debug flag causes all links to
+ -- be listed, and is useful when diagnosing circularities introduced
+ -- by incorrect changes to the run-time library itself.
+
+ -- db Output debug information from Better_Choice in Binde, which uses
+ -- various heuristics to determine elaboration order in cases where
+ -- multiple orders are valid.
+
-- dc List units as they are chosen. As units are selected for addition to
-- the elaboration order, a line of output is generated showing which
-- unit has been selected.
-- the algorithm used to determine a correct order of elaboration. This
-- is useful in diagnosing any problems in its behavior.
+ -- do Use old elaboration order preference. The new preference rules
+ -- prefer specs with no bodies to specs with bodies, and between two
+ -- specs with bodies, prefers the one whose body is closer to being
+ -- able to be elaborated. This is a clear improvement, but we provide
+ -- this debug flag in case of regressions.
+
-- du List unit name and file name for each unit as it is read in
-- dx Force the binder to read (and then ignore) the xref information
-- in ali files (used to check that read circuit is working OK).
- ------------------------------------------------------------
- -- Documentation for the Debug Flags used in package Make --
- ------------------------------------------------------------
+ --------------------------------------------
+ -- Documentation for gnatmake Debug Flags --
+ --------------------------------------------
- -- Please note that such flags apply to all of Make clients,
- -- such as gnatmake.
+ -- df Only output file names, not path names, in log
- -- dn Do not delete temporary files creates by Make at the end
+ -- dn Do not delete temporary files created by gnatmake at the end
-- of execution, such as temporary config pragma files, mapping
-- files or project path files.
-- dw Prints the list of units withed by the unit currently explored
-- during the main loop of Make.Compile_Sources.
- ----------------------
- -- Get_Debug_Flag_K --
- ----------------------
+ ---------------------------------------------
+ -- Documentation for gprbuild Debug Flags --
+ ---------------------------------------------
- function Get_Debug_Flag_K return Boolean is
- begin
- return Debug_Flag_K;
- end Get_Debug_Flag_K;
+ -- dn Do not delete temporary files createed by gprbuild at the end
+ -- of execution, such as temporary config pragma files, mapping
+ -- files or project path files.
+
+ -- dt When a time stamp mismatch has been found for an ALI file,
+ -- display the source file name, the time stamp expected and
+ -- the time stamp found.
--------------------
-- Set_Debug_Flag --
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