[multiple changes]

2012-07-09  Robert Dewar  <dewar@adacore.com>

	* layout.adb, i-cstrea.ads, a-ststio.ads, prj-util.ads, sem_cat.adb,
	s-commun.ads, s-ficobl.ads, s-os_lib.ads, s-fileio.ads: Minor
	reformatting.

2012-07-09  Eric Botcazou  <ebotcazou@adacore.com>

	* raise-gcc.c: Update comments. Fix typo.

2012-07-09  Thomas Quinot  <quinot@adacore.com>

	* einfo.adb, einfo.ads, sem_attr.adb, sem_ch13.adb: Attribute
	Scalar_Storage_Order can be defined or queried for array types as well
	as record types.

From-SVN: r189376

gcc/ada/ChangeLog

+2012-07-09  Robert Dewar  <dewar@adacore.com>
+
+	* layout.adb, i-cstrea.ads, a-ststio.ads, prj-util.ads, sem_cat.adb,
+	s-commun.ads, s-ficobl.ads, s-os_lib.ads, s-fileio.ads: Minor
+	reformatting.
+
+2012-07-09  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* raise-gcc.c: Update comments. Fix typo.
+
+2012-07-09  Thomas Quinot  <quinot@adacore.com>
+
+	* einfo.adb, einfo.ads, sem_attr.adb, sem_ch13.adb: Attribute
+	Scalar_Storage_Order can be defined or queried for array types as well
+	as record types.
+
 2012-07-09  Tristan Gingold  <gingold@adacore.com>
 
 	* a-exexpr-gcc.adb (CleanupUnwind_Handler): Now imported from

gcc/ada/a-ststio.ads

@@ -37,7 +37,6 @@ with Ada.IO_Exceptions;
 with System.File_Control_Block;
 
 package Ada.Streams.Stream_IO is
-
    pragma Preelaborate;
 
    type Stream_Access is access all Root_Stream_Type'Class;

gcc/ada/einfo.adb

@@ -2602,7 +2602,7 @@ package body Einfo is
 
    function Reverse_Storage_Order (Id : E) return B is
    begin
-      pragma Assert (Is_Record_Type (Id));
+      pragma Assert (Is_Record_Type (Id) or else Is_Array_Type (Id));
       return Flag93 (Base_Type (Id));
    end Reverse_Storage_Order;
 

gcc/ada/einfo.ads

@@ -3535,11 +3535,12 @@ package Einfo is
 --       Ada 2005 AI-133), or must occupy an integral number of storage units.
 
 --    Reverse_Storage_Order (Flag93) [base type only]
---       Present in all record type entities. Set if entity has a
+--       Present in all record and array type entities. Set if entity has a
 --       Scalar_Storage_Order aspect (set by an aspect clause or attribute
 --       definition clause) that has reversed the order of storage elements
---       from the default value. When this flag is set, the Bit_Order aspect
---       must be set to the same value.
+--       from the default value. When this flag is set for a record type,
+--       the Bit_Order aspect must be set to the same value (either explicitly
+--       or as the target default value).
 
 --    RM_Size (Uint13)
 --       Present in all type and subtype entities. Contains the value of

gcc/ada/i-cstrea.ads

@@ -229,7 +229,6 @@ package Interfaces.C_Streams is
    --  path name. Use max_path_len given below as the size of buffer.
 
    max_path_len : constant Integer;
-   --  max_path_len : Integer;
    --  Maximum length of an allowable full path name on the system,including a
    --  terminating NUL character. Declared as a constant to allow references
    --  from other preelaborated GNAT library packages.

gcc/ada/layout.adb

@@ -3103,18 +3103,17 @@ package body Layout is
       --  the type, or the maximum allowed alignment.
 
       declare
-         S             : Int;
+         S : Int;
+         A : Nat;
 
-         A             : Nat;
          Max_Alignment : Nat;
 
       begin
-         --  The given esize may be larger that int'last because of a previous
+         --  The given Esize may be larger that int'last because of a previous
          --  error, and the call to UI_To_Int will fail, so use default.
 
          if Esize (E) / SSU > Ttypes.Maximum_Alignment then
             S := Ttypes.Maximum_Alignment;
-
          else
             S := UI_To_Int (Esize (E)) / SSU;
          end if;

gcc/ada/prj-util.ads

@@ -239,11 +239,11 @@ package Prj.Util is
      (Tree    : Project_Tree_Ref;
       Project : Project_Id);
    --  Call Action for every sources that are needed to use Project. This is
-   --  either the sources corresponding to the units in attribute Interfaces or
-   --  all sources of the project. Note that only the bodies that are needed
-   --  (because the unit is generic or contains some inline pragmas) are
-   --  handled. This routine must be called only when the project has been
-   --  built successfully.
+   --  either the sources corresponding to the units in attribute Interfaces
+   --  or all sources of the project. Note that only the bodies that are
+   --  needed (because the unit is generic or contains some inline pragmas)
+   --  are handled. This routine must be called only when the project has
+   --  been built successfully.
 
 private
    type Text_File_Data is record

gcc/ada/raise-gcc.c

@@ -207,6 +207,10 @@ db_phases (int phases)
    * Tables for the dwarf zero cost case *
    =======================================
 
+   They are fully documented in:
+     http://sourcery.mentor.com/public/cxx-abi/exceptions.pdf
+   Here is a shorter presentation, with some specific comments for Ada.
+
    call_site []
    -------------------------------------------------------------------
    * region-start | region-length | landing-pad | first-action-index *
@@ -244,20 +248,32 @@ db_phases (int phases)
    (see below), from which information may be retrieved to check if it
    matches the exception being propagated.
 
-   action-filter > 0  means there is a regular handler to be run,
-
-   action-filter < 0  means there is a some "exception_specification"
-                      data to retrieve, which is only relevant for C++
-		      and should never show up for Ada.
-
-   next-action points to the next entry in the list using a relative byte
-   index. 0 indicates there is no other entry.
+   * action-filter > 0:
+   means there is a regular handler to be run The value is also passed
+   to the landing pad to dispatch the exception.
+
+   * action-filter < 0:
+   means there is a some "exception_specification" data to retrieve,
+   which is only relevant for C++ and should never show up for Ada.
+   (Exception specification specifies which exceptions can be thrown
+   by a function. Such filter is emitted around the body of C++
+   functions defined like:
+     void foo ([...])  throw (A, B) { [...] }
+   These can be viewed as negativ filter: the landing pad is branched
+   to for exceptions that doesn't match the filter and usually aborts
+   the program).
+
+   * next-action
+   points to the next entry in the list using a relative byte offset. 0
+   indicates there is no other entry.
 
    ttypes []
    ---------------
    * ttype-value *
    ---------------
 
+   This table is an array of addresses.
+
    A null value indicates a catch-all handler.  (Not used by Ada)
 
    Non null values are used to match the exception being propagated:
@@ -1151,10 +1167,11 @@ __gnat_cleanupunwind_handler (int version,
 {
   /* Terminate when the end of the stack is reached.  */
   if ((phases & _UA_END_OF_STACK) != 0
-#ifdef __ia64__
+#if defined (__ia64__) && defined (USE_LIBUNWIND_EXCEPTIONS)
       /* Strictely follow the ia64 ABI: when end of stack is reached,
-	 the callback will be called with a NULL stack pointer.  */
-      || _Unwind_GetREG (context, 12) == 0
+	 the callback will be called with a NULL stack pointer.
+	 No need for that when using libgcc unwinder.  */
+      || _Unwind_GetGR (context, 12) == 0
 #endif
       )
     __gnat_unhandled_except_handler (exception);

gcc/ada/s-commun.ads

@@ -35,7 +35,6 @@ with Ada.Streams;
 with System.CRTL;
 
 package System.Communication is
-
    pragma Preelaborate;
 
    function Last_Index

gcc/ada/s-ficobl.ads

@@ -40,7 +40,6 @@ with Interfaces.C_Streams;
 with System.CRTL;
 
 package System.File_Control_Block is
-
    pragma Preelaborate;
 
    ----------------------------

gcc/ada/s-fileio.ads

@@ -37,7 +37,6 @@ with Interfaces.C_Streams;
 with System.File_Control_Block;
 
 package System.File_IO is
-
    pragma Preelaborate;
 
    package FCB renames System.File_Control_Block;

gcc/ada/s-os_lib.ads

@@ -55,7 +55,6 @@ with System.Strings;
 
 package System.OS_Lib is
    pragma Elaborate_Body (OS_Lib);
-
    pragma Preelaborate;
 
    -----------------------

gcc/ada/sem_attr.adb

@@ -4569,8 +4569,9 @@ package body Sem_Attr is
          Check_E0;
          Check_Type;
 
-         if not Is_Record_Type (P_Type) then
-            Error_Attr_P ("prefix of % attribute must be record type");
+         if not Is_Record_Type (P_Type) or else Is_Array_Type (P_Type) then
+            Error_Attr_P
+              ("prefix of % attribute must be record or array type");
          end if;
 
          if Bytes_Big_Endian xor Reverse_Storage_Order (P_Type) then

gcc/ada/sem_cat.adb

@@ -224,9 +224,10 @@ package body Sem_Cat is
          --  AI05-0206.
 
          elsif (Unit_Category = Remote_Types
-                 or else Unit_Category = Remote_Call_Interface)
-           and then (Nkind (N) = N_With_Clause
-                      and then Private_Present (N))
+                  or else
+                Unit_Category = Remote_Call_Interface)
+           and then Nkind (N) = N_With_Clause
+           and then Private_Present (N)
            and then Is_Preelaborated (Depended_Entity)
          then
             null;
@@ -271,7 +272,8 @@ package body Sem_Cat is
          --  on a preelaborated unit with a normal with_clause.
 
          elsif (Unit_Category = Remote_Types
-                 or else Unit_Category = Remote_Call_Interface)
+                  or else
+                Unit_Category = Remote_Call_Interface)
            and then Is_Preelaborated (Depended_Entity)
          then
             Error_Msg_NE

gcc/ada/sem_ch13.adb

@@ -3312,10 +3312,10 @@ package body Sem_Ch13 is
 
          when Attribute_Scalar_Storage_Order => Scalar_Storage_Order : declare
          begin
-            if not Is_Record_Type (U_Ent) then
+            if not (Is_Record_Type (U_Ent) or else Is_Array_Type (U_Ent)) then
                Error_Msg_N
-                 ("Scalar_Storage_Order can only be defined for record type",
-                  Nam);
+                 ("Scalar_Storage_Order can only be defined for "
+                  & "record or array type", Nam);
 
             elsif Duplicate_Clause then
                null;