-- Local Subprograms --
-----------------------
+ procedure Adjust_Record_For_Reverse_Bit_Order_Ada_95 (R : Entity_Id);
+ -- Helper routine providing the original (pre-AI95-0133) behaviour for
+ -- Adjust_Record_For_Reverse_Bit_Order.
+
procedure Alignment_Check_For_Size_Change (Typ : Entity_Id; Size : Uint);
-- This routine is called after setting one of the sizes of type entity
-- Typ to Size. The purpose is to deal with the situation of a derived
Comp : Node_Id;
CC : Node_Id;
- begin
- -- Processing depends on version of Ada
+ Max_Machine_Scalar_Size : constant Uint :=
+ UI_From_Int
+ (Standard_Long_Long_Integer_Size);
+ -- We use this as the maximum machine scalar size
- -- For Ada 95, we just renumber bits within a storage unit. We do the
- -- same for Ada 83 mode, since we recognize the Bit_Order attribute in
- -- Ada 83, and are free to add this extension.
+ Num_CC : Natural;
+ SSU : constant Uint := UI_From_Int (System_Storage_Unit);
- if Ada_Version < Ada_2005 then
- Comp := First_Component_Or_Discriminant (R);
- while Present (Comp) loop
- CC := Component_Clause (Comp);
+ begin
+ -- Processing here used to depend on Ada version: the behaviour was
+ -- changed by AI95-0133. However this AI is a Binding interpretation,
+ -- so we now implement it even in Ada 95 mode. The original behaviour
+ -- from unamended Ada 95 is still available for compatibility under
+ -- debugging switch -gnatd.
+
+ if Ada_Version < Ada_2005 and then Debug_Flag_Dot_P then
+ Adjust_Record_For_Reverse_Bit_Order_Ada_95 (R);
+ return;
+ end if;
+
+ -- For Ada 2005, we do machine scalar processing, as fully described In
+ -- AI-133. This involves gathering all components which start at the
+ -- same byte offset and processing them together. Same approach is still
+ -- valid in later versions including Ada 2012.
- -- If component clause is present, then deal with the non-default
- -- bit order case for Ada 95 mode.
+ -- This first loop through components does two things. First it
+ -- deals with the case of components with component clauses whose
+ -- length is greater than the maximum machine scalar size (either
+ -- accepting them or rejecting as needed). Second, it counts the
+ -- number of components with component clauses whose length does
+ -- not exceed this maximum for later processing.
- -- We only do this processing for the base type, and in fact that
- -- is important, since otherwise if there are record subtypes, we
- -- could reverse the bits once for each subtype, which is wrong.
+ Num_CC := 0;
+ Comp := First_Component_Or_Discriminant (R);
+ while Present (Comp) loop
+ CC := Component_Clause (Comp);
- if Present (CC) and then Ekind (R) = E_Record_Type then
- declare
- CFB : constant Uint := Component_Bit_Offset (Comp);
- CSZ : constant Uint := Esize (Comp);
- CLC : constant Node_Id := Component_Clause (Comp);
- Pos : constant Node_Id := Position (CLC);
- FB : constant Node_Id := First_Bit (CLC);
+ if Present (CC) then
+ declare
+ Fbit : constant Uint := Static_Integer (First_Bit (CC));
+ Lbit : constant Uint := Static_Integer (Last_Bit (CC));
- Storage_Unit_Offset : constant Uint :=
- CFB / System_Storage_Unit;
+ begin
+ -- Case of component with last bit >= max machine scalar
- Start_Bit : constant Uint :=
- CFB mod System_Storage_Unit;
+ if Lbit >= Max_Machine_Scalar_Size then
- begin
- -- Cases where field goes over storage unit boundary
+ -- This is allowed only if first bit is zero, and
+ -- last bit + 1 is a multiple of storage unit size.
- if Start_Bit + CSZ > System_Storage_Unit then
+ if Fbit = 0 and then (Lbit + 1) mod SSU = 0 then
- -- Allow multi-byte field but generate warning
+ -- This is the case to give a warning if enabled
- if Start_Bit mod System_Storage_Unit = 0
- and then CSZ mod System_Storage_Unit = 0
- then
+ if Warn_On_Reverse_Bit_Order then
Error_Msg_N
("info: multi-byte field specified with "
- & "non-standard Bit_Order?V?", CLC);
+ & "non-standard Bit_Order?V?", CC);
if Bytes_Big_Endian then
Error_Msg_N
("\bytes are not reversed "
- & "(component is big-endian)?V?", CLC);
+ & "(component is big-endian)?V?", CC);
else
Error_Msg_N
("\bytes are not reversed "
- & "(component is little-endian)?V?", CLC);
+ & "(component is little-endian)?V?", CC);
end if;
+ end if;
- -- Do not allow non-contiguous field
+ -- Give error message for RM 13.5.1(10) violation
+
+ else
+ Error_Msg_FE
+ ("machine scalar rules not followed for&",
+ First_Bit (CC), Comp);
+
+ Error_Msg_Uint_1 := Lbit + 1;
+ Error_Msg_Uint_2 := Max_Machine_Scalar_Size;
+ Error_Msg_F
+ ("\last bit + 1 (^) exceeds maximum machine "
+ & "scalar size (^)",
+ First_Bit (CC));
+
+ if (Lbit + 1) mod SSU /= 0 then
+ Error_Msg_Uint_1 := SSU;
+ Error_Msg_F
+ ("\and is not a multiple of Storage_Unit (^) "
+ & "(RM 13.5.1(10))",
+ First_Bit (CC));
else
- Error_Msg_N
- ("attempt to specify non-contiguous field "
- & "not permitted", CLC);
- Error_Msg_N
- ("\caused by non-standard Bit_Order "
- & "specified", CLC);
- Error_Msg_N
- ("\consider possibility of using "
- & "Ada 2005 mode here", CLC);
+ Error_Msg_Uint_1 := Fbit;
+ Error_Msg_F
+ ("\and first bit (^) is non-zero "
+ & "(RM 13.4.1(10))",
+ First_Bit (CC));
end if;
+ end if;
- -- Case where field fits in one storage unit
+ -- OK case of machine scalar related component clause,
+ -- For now, just count them.
- else
- -- Give warning if suspicious component clause
+ else
+ Num_CC := Num_CC + 1;
+ end if;
+ end;
+ end if;
- if Intval (FB) >= System_Storage_Unit
- and then Warn_On_Reverse_Bit_Order
- then
- Error_Msg_N
- ("info: Bit_Order clause does not affect " &
- "byte ordering?V?", Pos);
- Error_Msg_Uint_1 :=
- Intval (Pos) + Intval (FB) /
- System_Storage_Unit;
- Error_Msg_N
- ("info: position normalized to ^ before bit " &
- "order interpreted?V?", Pos);
- end if;
+ Next_Component_Or_Discriminant (Comp);
+ end loop;
- -- Here is where we fix up the Component_Bit_Offset value
- -- to account for the reverse bit order. Some examples of
- -- what needs to be done are:
+ -- We need to sort the component clauses on the basis of the
+ -- Position values in the clause, so we can group clauses with
+ -- the same Position together to determine the relevant machine
+ -- scalar size.
- -- First_Bit .. Last_Bit Component_Bit_Offset
- -- old new old new
+ Sort_CC : declare
+ Comps : array (0 .. Num_CC) of Entity_Id;
+ -- Array to collect component and discriminant entities. The
+ -- data starts at index 1, the 0'th entry is for the sort
+ -- routine.
- -- 0 .. 0 7 .. 7 0 7
- -- 0 .. 1 6 .. 7 0 6
- -- 0 .. 2 5 .. 7 0 5
- -- 0 .. 7 0 .. 7 0 4
+ function CP_Lt (Op1, Op2 : Natural) return Boolean;
+ -- Compare routine for Sort
- -- 1 .. 1 6 .. 6 1 6
- -- 1 .. 4 3 .. 6 1 3
- -- 4 .. 7 0 .. 3 4 0
+ procedure CP_Move (From : Natural; To : Natural);
+ -- Move routine for Sort
- -- The rule is that the first bit is is obtained by
- -- subtracting the old ending bit from storage_unit - 1.
+ package Sorting is new GNAT.Heap_Sort_G (CP_Move, CP_Lt);
- Set_Component_Bit_Offset
- (Comp,
- (Storage_Unit_Offset * System_Storage_Unit) +
- (System_Storage_Unit - 1) -
- (Start_Bit + CSZ - 1));
+ Start : Natural;
+ Stop : Natural;
+ -- Start and stop positions in the component list of the set of
+ -- components with the same starting position (that constitute
+ -- components in a single machine scalar).
- Set_Normalized_First_Bit
- (Comp,
- Component_Bit_Offset (Comp) mod
- System_Storage_Unit);
- end if;
- end;
- end if;
+ MaxL : Uint;
+ -- Maximum last bit value of any component in this set
- Next_Component_Or_Discriminant (Comp);
- end loop;
+ MSS : Uint;
+ -- Corresponding machine scalar size
- -- For Ada 2005, we do machine scalar processing, as fully described In
- -- AI-133. This involves gathering all components which start at the
- -- same byte offset and processing them together. Same approach is still
- -- valid in later versions including Ada 2012.
+ -----------
+ -- CP_Lt --
+ -----------
- else
- declare
- Max_Machine_Scalar_Size : constant Uint :=
- UI_From_Int
- (Standard_Long_Long_Integer_Size);
- -- We use this as the maximum machine scalar size
+ function CP_Lt (Op1, Op2 : Natural) return Boolean is
+ begin
+ return Position (Component_Clause (Comps (Op1))) <
+ Position (Component_Clause (Comps (Op2)));
+ end CP_Lt;
- Num_CC : Natural;
- SSU : constant Uint := UI_From_Int (System_Storage_Unit);
+ -------------
+ -- CP_Move --
+ -------------
+ procedure CP_Move (From : Natural; To : Natural) is
begin
- -- This first loop through components does two things. First it
- -- deals with the case of components with component clauses whose
- -- length is greater than the maximum machine scalar size (either
- -- accepting them or rejecting as needed). Second, it counts the
- -- number of components with component clauses whose length does
- -- not exceed this maximum for later processing.
-
- Num_CC := 0;
- Comp := First_Component_Or_Discriminant (R);
- while Present (Comp) loop
- CC := Component_Clause (Comp);
+ Comps (To) := Comps (From);
+ end CP_Move;
- if Present (CC) then
- declare
- Fbit : constant Uint := Static_Integer (First_Bit (CC));
- Lbit : constant Uint := Static_Integer (Last_Bit (CC));
+ -- Start of processing for Sort_CC
- begin
- -- Case of component with last bit >= max machine scalar
+ begin
+ -- Collect the machine scalar relevant component clauses
- if Lbit >= Max_Machine_Scalar_Size then
+ Num_CC := 0;
+ Comp := First_Component_Or_Discriminant (R);
+ while Present (Comp) loop
+ declare
+ CC : constant Node_Id := Component_Clause (Comp);
- -- This is allowed only if first bit is zero, and
- -- last bit + 1 is a multiple of storage unit size.
+ begin
+ -- Collect only component clauses whose last bit is less
+ -- than machine scalar size. Any component clause whose
+ -- last bit exceeds this value does not take part in
+ -- machine scalar layout considerations. The test for
+ -- Error_Posted makes sure we exclude component clauses
+ -- for which we already posted an error.
+
+ if Present (CC)
+ and then not Error_Posted (Last_Bit (CC))
+ and then Static_Integer (Last_Bit (CC)) <
+ Max_Machine_Scalar_Size
+ then
+ Num_CC := Num_CC + 1;
+ Comps (Num_CC) := Comp;
+ end if;
+ end;
- if Fbit = 0 and then (Lbit + 1) mod SSU = 0 then
+ Next_Component_Or_Discriminant (Comp);
+ end loop;
- -- This is the case to give a warning if enabled
+ -- Sort by ascending position number
+
+ Sorting.Sort (Num_CC);
+
+ -- We now have all the components whose size does not exceed
+ -- the max machine scalar value, sorted by starting position.
+ -- In this loop we gather groups of clauses starting at the
+ -- same position, to process them in accordance with AI-133.
+
+ Stop := 0;
+ while Stop < Num_CC loop
+ Start := Stop + 1;
+ Stop := Start;
+ MaxL :=
+ Static_Integer
+ (Last_Bit (Component_Clause (Comps (Start))));
+ while Stop < Num_CC loop
+ if Static_Integer
+ (Position (Component_Clause (Comps (Stop + 1)))) =
+ Static_Integer
+ (Position (Component_Clause (Comps (Stop))))
+ then
+ Stop := Stop + 1;
+ MaxL :=
+ UI_Max
+ (MaxL,
+ Static_Integer
+ (Last_Bit
+ (Component_Clause (Comps (Stop)))));
+ else
+ exit;
+ end if;
+ end loop;
- if Warn_On_Reverse_Bit_Order then
- Error_Msg_N
- ("info: multi-byte field specified with "
- & "non-standard Bit_Order?V?", CC);
-
- if Bytes_Big_Endian then
- Error_Msg_N
- ("\bytes are not reversed "
- & "(component is big-endian)?V?", CC);
- else
- Error_Msg_N
- ("\bytes are not reversed "
- & "(component is little-endian)?V?", CC);
- end if;
- end if;
+ -- Now we have a group of component clauses from Start to
+ -- Stop whose positions are identical, and MaxL is the
+ -- maximum last bit value of any of these components.
- -- Give error message for RM 13.5.1(10) violation
+ -- We need to determine the corresponding machine scalar
+ -- size. This loop assumes that machine scalar sizes are
+ -- even, and that each possible machine scalar has twice
+ -- as many bits as the next smaller one.
- else
- Error_Msg_FE
- ("machine scalar rules not followed for&",
- First_Bit (CC), Comp);
+ MSS := Max_Machine_Scalar_Size;
+ while MSS mod 2 = 0
+ and then (MSS / 2) >= SSU
+ and then (MSS / 2) > MaxL
+ loop
+ MSS := MSS / 2;
+ end loop;
- Error_Msg_Uint_1 := Lbit + 1;
- Error_Msg_Uint_2 := Max_Machine_Scalar_Size;
- Error_Msg_F
- ("\last bit + 1 (^) exceeds maximum machine "
- & "scalar size (^)",
- First_Bit (CC));
+ -- Here is where we fix up the Component_Bit_Offset value
+ -- to account for the reverse bit order. Some examples of
+ -- what needs to be done for the case of a machine scalar
+ -- size of 8 are:
- if (Lbit + 1) mod SSU /= 0 then
- Error_Msg_Uint_1 := SSU;
- Error_Msg_F
- ("\and is not a multiple of Storage_Unit (^) "
- & "(RM 13.5.1(10))",
- First_Bit (CC));
+ -- First_Bit .. Last_Bit Component_Bit_Offset
+ -- old new old new
- else
- Error_Msg_Uint_1 := Fbit;
- Error_Msg_F
- ("\and first bit (^) is non-zero "
- & "(RM 13.4.1(10))",
- First_Bit (CC));
- end if;
- end if;
+ -- 0 .. 0 7 .. 7 0 7
+ -- 0 .. 1 6 .. 7 0 6
+ -- 0 .. 2 5 .. 7 0 5
+ -- 0 .. 7 0 .. 7 0 4
- -- OK case of machine scalar related component clause,
- -- For now, just count them.
+ -- 1 .. 1 6 .. 6 1 6
+ -- 1 .. 4 3 .. 6 1 3
+ -- 4 .. 7 0 .. 3 4 0
- else
- Num_CC := Num_CC + 1;
- end if;
- end;
- end if;
+ -- The rule is that the first bit is obtained by subtracting
+ -- the old ending bit from machine scalar size - 1.
- Next_Component_Or_Discriminant (Comp);
- end loop;
+ for C in Start .. Stop loop
+ declare
+ Comp : constant Entity_Id := Comps (C);
+ CC : constant Node_Id := Component_Clause (Comp);
- -- We need to sort the component clauses on the basis of the
- -- Position values in the clause, so we can group clauses with
- -- the same Position together to determine the relevant machine
- -- scalar size.
+ LB : constant Uint := Static_Integer (Last_Bit (CC));
+ NFB : constant Uint := MSS - Uint_1 - LB;
+ NLB : constant Uint := NFB + Esize (Comp) - 1;
+ Pos : constant Uint := Static_Integer (Position (CC));
- Sort_CC : declare
- Comps : array (0 .. Num_CC) of Entity_Id;
- -- Array to collect component and discriminant entities. The
- -- data starts at index 1, the 0'th entry is for the sort
- -- routine.
+ begin
+ if Warn_On_Reverse_Bit_Order then
+ Error_Msg_Uint_1 := MSS;
+ Error_Msg_N
+ ("info: reverse bit order in machine " &
+ "scalar of length^?V?", First_Bit (CC));
+ Error_Msg_Uint_1 := NFB;
+ Error_Msg_Uint_2 := NLB;
- function CP_Lt (Op1, Op2 : Natural) return Boolean;
- -- Compare routine for Sort
+ if Bytes_Big_Endian then
+ Error_Msg_NE
+ ("\big-endian range for component "
+ & "& is ^ .. ^?V?", First_Bit (CC), Comp);
+ else
+ Error_Msg_NE
+ ("\little-endian range for component"
+ & "& is ^ .. ^?V?", First_Bit (CC), Comp);
+ end if;
+ end if;
- procedure CP_Move (From : Natural; To : Natural);
- -- Move routine for Sort
+ Set_Component_Bit_Offset (Comp, Pos * SSU + NFB);
+ Set_Normalized_First_Bit (Comp, NFB mod SSU);
+ end;
+ end loop;
+ end loop;
+ end Sort_CC;
+ end Adjust_Record_For_Reverse_Bit_Order;
- package Sorting is new GNAT.Heap_Sort_G (CP_Move, CP_Lt);
+ ------------------------------------------------
+ -- Adjust_Record_For_Reverse_Bit_Order_Ada_95 --
+ ------------------------------------------------
- Start : Natural;
- Stop : Natural;
- -- Start and stop positions in the component list of the set of
- -- components with the same starting position (that constitute
- -- components in a single machine scalar).
+ procedure Adjust_Record_For_Reverse_Bit_Order_Ada_95 (R : Entity_Id) is
+ Comp : Node_Id;
+ CC : Node_Id;
- MaxL : Uint;
- -- Maximum last bit value of any component in this set
+ begin
+ -- For Ada 95, we just renumber bits within a storage unit. We do the
+ -- same for Ada 83 mode, since we recognize the Bit_Order attribute in
+ -- Ada 83, and are free to add this extension.
- MSS : Uint;
- -- Corresponding machine scalar size
+ Comp := First_Component_Or_Discriminant (R);
+ while Present (Comp) loop
+ CC := Component_Clause (Comp);
- -----------
- -- CP_Lt --
- -----------
+ -- If component clause is present, then deal with the non-default
+ -- bit order case for Ada 95 mode.
- function CP_Lt (Op1, Op2 : Natural) return Boolean is
- begin
- return Position (Component_Clause (Comps (Op1))) <
- Position (Component_Clause (Comps (Op2)));
- end CP_Lt;
+ -- We only do this processing for the base type, and in fact that
+ -- is important, since otherwise if there are record subtypes, we
+ -- could reverse the bits once for each subtype, which is wrong.
- -------------
- -- CP_Move --
- -------------
+ if Present (CC) and then Ekind (R) = E_Record_Type then
+ declare
+ CFB : constant Uint := Component_Bit_Offset (Comp);
+ CSZ : constant Uint := Esize (Comp);
+ CLC : constant Node_Id := Component_Clause (Comp);
+ Pos : constant Node_Id := Position (CLC);
+ FB : constant Node_Id := First_Bit (CLC);
- procedure CP_Move (From : Natural; To : Natural) is
- begin
- Comps (To) := Comps (From);
- end CP_Move;
+ Storage_Unit_Offset : constant Uint :=
+ CFB / System_Storage_Unit;
- -- Start of processing for Sort_CC
+ Start_Bit : constant Uint :=
+ CFB mod System_Storage_Unit;
begin
- -- Collect the machine scalar relevant component clauses
+ -- Cases where field goes over storage unit boundary
- Num_CC := 0;
- Comp := First_Component_Or_Discriminant (R);
- while Present (Comp) loop
- declare
- CC : constant Node_Id := Component_Clause (Comp);
+ if Start_Bit + CSZ > System_Storage_Unit then
- begin
- -- Collect only component clauses whose last bit is less
- -- than machine scalar size. Any component clause whose
- -- last bit exceeds this value does not take part in
- -- machine scalar layout considerations. The test for
- -- Error_Posted makes sure we exclude component clauses
- -- for which we already posted an error.
-
- if Present (CC)
- and then not Error_Posted (Last_Bit (CC))
- and then Static_Integer (Last_Bit (CC)) <
- Max_Machine_Scalar_Size
- then
- Num_CC := Num_CC + 1;
- Comps (Num_CC) := Comp;
- end if;
- end;
+ -- Allow multi-byte field but generate warning
- Next_Component_Or_Discriminant (Comp);
- end loop;
+ if Start_Bit mod System_Storage_Unit = 0
+ and then CSZ mod System_Storage_Unit = 0
+ then
+ Error_Msg_N
+ ("info: multi-byte field specified with "
+ & "non-standard Bit_Order?V?", CLC);
- -- Sort by ascending position number
-
- Sorting.Sort (Num_CC);
-
- -- We now have all the components whose size does not exceed
- -- the max machine scalar value, sorted by starting position.
- -- In this loop we gather groups of clauses starting at the
- -- same position, to process them in accordance with AI-133.
-
- Stop := 0;
- while Stop < Num_CC loop
- Start := Stop + 1;
- Stop := Start;
- MaxL :=
- Static_Integer
- (Last_Bit (Component_Clause (Comps (Start))));
- while Stop < Num_CC loop
- if Static_Integer
- (Position (Component_Clause (Comps (Stop + 1)))) =
- Static_Integer
- (Position (Component_Clause (Comps (Stop))))
- then
- Stop := Stop + 1;
- MaxL :=
- UI_Max
- (MaxL,
- Static_Integer
- (Last_Bit
- (Component_Clause (Comps (Stop)))));
+ if Bytes_Big_Endian then
+ Error_Msg_N
+ ("\bytes are not reversed "
+ & "(component is big-endian)?V?", CLC);
else
- exit;
+ Error_Msg_N
+ ("\bytes are not reversed "
+ & "(component is little-endian)?V?", CLC);
end if;
- end loop;
- -- Now we have a group of component clauses from Start to
- -- Stop whose positions are identical, and MaxL is the
- -- maximum last bit value of any of these components.
-
- -- We need to determine the corresponding machine scalar
- -- size. This loop assumes that machine scalar sizes are
- -- even, and that each possible machine scalar has twice
- -- as many bits as the next smaller one.
-
- MSS := Max_Machine_Scalar_Size;
- while MSS mod 2 = 0
- and then (MSS / 2) >= SSU
- and then (MSS / 2) > MaxL
- loop
- MSS := MSS / 2;
- end loop;
+ -- Do not allow non-contiguous field
+
+ else
+ Error_Msg_N
+ ("attempt to specify non-contiguous field "
+ & "not permitted", CLC);
+ Error_Msg_N
+ ("\caused by non-standard Bit_Order "
+ & "specified in legacy Ada 95 mode", CLC);
+ end if;
+
+ -- Case where field fits in one storage unit
+
+ else
+ -- Give warning if suspicious component clause
+
+ if Intval (FB) >= System_Storage_Unit
+ and then Warn_On_Reverse_Bit_Order
+ then
+ Error_Msg_N
+ ("info: Bit_Order clause does not affect " &
+ "byte ordering?V?", Pos);
+ Error_Msg_Uint_1 :=
+ Intval (Pos) + Intval (FB) /
+ System_Storage_Unit;
+ Error_Msg_N
+ ("info: position normalized to ^ before bit " &
+ "order interpreted?V?", Pos);
+ end if;
-- Here is where we fix up the Component_Bit_Offset value
-- to account for the reverse bit order. Some examples of
- -- what needs to be done for the case of a machine scalar
- -- size of 8 are:
+ -- what needs to be done are:
-- First_Bit .. Last_Bit Component_Bit_Offset
-- old new old new
-- 1 .. 4 3 .. 6 1 3
-- 4 .. 7 0 .. 3 4 0
- -- The rule is that the first bit is obtained by subtracting
- -- the old ending bit from machine scalar size - 1.
-
- for C in Start .. Stop loop
- declare
- Comp : constant Entity_Id := Comps (C);
- CC : constant Node_Id := Component_Clause (Comp);
+ -- The rule is that the first bit is is obtained by
+ -- subtracting the old ending bit from storage_unit - 1.
- LB : constant Uint := Static_Integer (Last_Bit (CC));
- NFB : constant Uint := MSS - Uint_1 - LB;
- NLB : constant Uint := NFB + Esize (Comp) - 1;
- Pos : constant Uint := Static_Integer (Position (CC));
+ Set_Component_Bit_Offset
+ (Comp,
+ (Storage_Unit_Offset * System_Storage_Unit) +
+ (System_Storage_Unit - 1) -
+ (Start_Bit + CSZ - 1));
- begin
- if Warn_On_Reverse_Bit_Order then
- Error_Msg_Uint_1 := MSS;
- Error_Msg_N
- ("info: reverse bit order in machine " &
- "scalar of length^?V?", First_Bit (CC));
- Error_Msg_Uint_1 := NFB;
- Error_Msg_Uint_2 := NLB;
-
- if Bytes_Big_Endian then
- Error_Msg_NE
- ("\big-endian range for component "
- & "& is ^ .. ^?V?", First_Bit (CC), Comp);
- else
- Error_Msg_NE
- ("\little-endian range for component"
- & "& is ^ .. ^?V?", First_Bit (CC), Comp);
- end if;
- end if;
+ Set_Normalized_First_Bit
+ (Comp,
+ Component_Bit_Offset (Comp) mod
+ System_Storage_Unit);
+ end if;
+ end;
+ end if;
- Set_Component_Bit_Offset (Comp, Pos * SSU + NFB);
- Set_Normalized_First_Bit (Comp, NFB mod SSU);
- end;
- end loop;
- end loop;
- end Sort_CC;
- end;
- end if;
- end Adjust_Record_For_Reverse_Bit_Order;
+ Next_Component_Or_Discriminant (Comp);
+ end loop;
+ end Adjust_Record_For_Reverse_Bit_Order_Ada_95;
-------------------------------------
-- Alignment_Check_For_Size_Change --
projects / thirdparty / gcc.git / commitdiff
