re PR ada/79945 (ppc64le Default_Bit_Order in Ada)

	PR ada/79945
	* system-linux-ppc.ads (Default_Bit_Order): Use Standard's setting.

	* system-linux-arm.ads (Default_Bit_Order): Likewise.
	* system-linux-mips.ads (Default_Bit_Order): Likewise.
	* system-linux-armeb.ads: Delete.
	* system-linux-mipsel.ads: Likewise.
	* gcc-interface/Makefile.in (MIPS/Linux): Adjust.
	(ARM/Linux): Likewise.

From-SVN: r245970

gcc/ada/ChangeLog

+2017-03-08  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR ada/79945
+	* system-linux-ppc.ads (Default_Bit_Order): Use Standard's setting.
+
+	* system-linux-arm.ads (Default_Bit_Order): Likewise.
+	* system-linux-mips.ads (Default_Bit_Order): Likewise.
+	* system-linux-armeb.ads: Delete.
+	* system-linux-mipsel.ads: Likewise.
+	* gcc-interface/Makefile.in (MIPS/Linux): Adjust.
+	(ARM/Linux): Likewise.
+
 2017-02-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c/79677

gcc/ada/gcc-interface/Makefile.in

@@ -1871,12 +1871,7 @@ ifeq ($(strip $(filter-out mips% linux%,$(target_cpu) $(target_os))),)
   s-taspri.ads<s-taspri-posix-noaltstack.ads \
   s-tpopsp.adb<s-tpopsp-posix-foreign.adb \
   g-sercom.adb<g-sercom-linux.adb \
-
-  ifeq ($(strip $(filter-out %el,$(target_cpu))),)
-    LIBGNAT_TARGET_PAIRS += system.ads<system-linux-mipsel.ads
-  else
-    LIBGNAT_TARGET_PAIRS += system.ads<system-linux-mips.ads
-  endif
+  system.ads<system-linux-mips.ads
 
   TOOLS_TARGET_PAIRS =  \
     mlib-tgt-specific.adb<mlib-tgt-specific-linux.adb \
@@ -1956,16 +1951,13 @@ ifeq ($(strip $(filter-out arm% linux-gnueabi%,$(target_cpu) $(target_os))),)
   s-taspri.ads<s-taspri-posix-noaltstack.ads \
   s-tpopsp.adb<s-tpopsp-posix-foreign.adb \
   $(ATOMICS_TARGET_PAIRS) \
-  $(ATOMICS_BUILTINS_TARGET_PAIRS)
+  $(ATOMICS_BUILTINS_TARGET_PAIRS) \
+  system.ads<system-linux-arm.ads
 
   ifeq ($(strip $(filter-out arm%b,$(target_cpu))),)
     EH_MECHANISM=
-    LIBGNAT_TARGET_PAIRS += \
-    system.ads<system-linux-armeb.ads
   else
     EH_MECHANISM=-arm
-    LIBGNAT_TARGET_PAIRS += \
-    system.ads<system-linux-arm.ads
   endif
 
   TOOLS_TARGET_PAIRS =  \

gcc/ada/system-linux-arm.ads

@@ -7,7 +7,7 @@
 --                                 S p e c                                  --
 --                        (GNU-Linux/ARM Version)                           --
 --                                                                          --
---          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2017, Free Software Foundation, Inc.         --
 --                                                                          --
 -- This specification is derived from the Ada Reference Manual for use with --
 -- GNAT. The copyright notice above, and the license provisions that follow --
@@ -89,7 +89,8 @@ package System is
    --  Other System-Dependent Declarations
 
    type Bit_Order is (High_Order_First, Low_Order_First);
-   Default_Bit_Order : constant Bit_Order := Low_Order_First;
+   Default_Bit_Order : constant Bit_Order :=
+                         Bit_Order'Val (Standard'Default_Bit_Order);
    pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
 
    --  Priority-related Declarations (RM D.1)

gcc/ada/system-linux-armeb.ads

-------------------------------------------------------------------------------
---                                                                          --
---                        GNAT RUN-TIME COMPONENTS                          --
---                                                                          --
---                               S Y S T E M                                --
---                                                                          --
---                                 S p e c                                  --
---                        (GNU-Linux/ARMEB Version)                         --
---                                                                          --
---          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
---                                                                          --
--- This specification is derived from the Ada Reference Manual for use with --
--- GNAT. The copyright notice above, and the license provisions that follow --
--- apply solely to the  contents of the part following the private keyword. --
---                                                                          --
--- 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 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.                                     --
---                                                                          --
--- 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.      --
---                                                                          --
-------------------------------------------------------------------------------
-
-package System is
-   pragma Pure;
-   --  Note that we take advantage of the implementation permission to make
-   --  this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
-   --  2005, this is Pure in any case (AI-362).
-
-   pragma No_Elaboration_Code_All;
-   --  Allow the use of that restriction in units that WITH this unit
-
-   type Name is (SYSTEM_NAME_GNAT);
-   System_Name : constant Name := SYSTEM_NAME_GNAT;
-
-   --  System-Dependent Named Numbers
-
-   Min_Int               : constant := Long_Long_Integer'First;
-   Max_Int               : constant := Long_Long_Integer'Last;
-
-   Max_Binary_Modulus    : constant := 2 ** Long_Long_Integer'Size;
-   Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1;
-
-   Max_Base_Digits       : constant := Long_Long_Float'Digits;
-   Max_Digits            : constant := Long_Long_Float'Digits;
-
-   Max_Mantissa          : constant := 63;
-   Fine_Delta            : constant := 2.0 ** (-Max_Mantissa);
-
-   Tick                  : constant := 0.000_001;
-
-   --  Storage-related Declarations
-
-   type Address is private;
-   pragma Preelaborable_Initialization (Address);
-   Null_Address : constant Address;
-
-   Storage_Unit : constant := 8;
-   Word_Size    : constant := Standard'Word_Size;
-   Memory_Size  : constant := 2 ** Word_Size;
-
-   --  Address comparison
-
-   function "<"  (Left, Right : Address) return Boolean;
-   function "<=" (Left, Right : Address) return Boolean;
-   function ">"  (Left, Right : Address) return Boolean;
-   function ">=" (Left, Right : Address) return Boolean;
-   function "="  (Left, Right : Address) return Boolean;
-
-   pragma Import (Intrinsic, "<");
-   pragma Import (Intrinsic, "<=");
-   pragma Import (Intrinsic, ">");
-   pragma Import (Intrinsic, ">=");
-   pragma Import (Intrinsic, "=");
-
-   --  Other System-Dependent Declarations
-
-   type Bit_Order is (High_Order_First, Low_Order_First);
-   Default_Bit_Order : constant Bit_Order := High_Order_First;
-   pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
-
-   --  Priority-related Declarations (RM D.1)
-
-   --  0 .. 98 corresponds to the system priority range 1 .. 99.
-   --
-   --  If the scheduling policy is SCHED_FIFO or SCHED_RR the runtime makes use
-   --  of the entire range provided by the system.
-   --
-   --  If the scheduling policy is SCHED_OTHER the only valid system priority
-   --  is 1 and other values are simply ignored.
-
-   Max_Priority           : constant Positive := 97;
-   Max_Interrupt_Priority : constant Positive := 98;
-
-   subtype Any_Priority       is Integer      range  0 .. 98;
-   subtype Priority           is Any_Priority range  0 .. 97;
-   subtype Interrupt_Priority is Any_Priority range 98 .. 98;
-
-   Default_Priority : constant Priority := 48;
-
-private
-
-   type Address is mod Memory_Size;
-   Null_Address : constant Address := 0;
-
-   --------------------------------------
-   -- System Implementation Parameters --
-   --------------------------------------
-
-   --  These parameters provide information about the target that is used
-   --  by the compiler. They are in the private part of System, where they
-   --  can be accessed using the special circuitry in the Targparm unit
-   --  whose source should be consulted for more detailed descriptions
-   --  of the individual switch values.
-
-   Backend_Divide_Checks     : constant Boolean := False;
-   Backend_Overflow_Checks   : constant Boolean := True;
-   Command_Line_Args         : constant Boolean := True;
-   Configurable_Run_Time     : constant Boolean := False;
-   Denorm                    : constant Boolean := True;
-   Duration_32_Bits          : constant Boolean := False;
-   Exit_Status_Supported     : constant Boolean := True;
-   Fractional_Fixed_Ops      : constant Boolean := False;
-   Frontend_Layout           : constant Boolean := False;
-   Machine_Overflows         : constant Boolean := False;
-   Machine_Rounds            : constant Boolean := True;
-   Preallocated_Stacks       : constant Boolean := False;
-   Signed_Zeros              : constant Boolean := True;
-   Stack_Check_Default       : constant Boolean := False;
-   Stack_Check_Probes        : constant Boolean := True;
-   Stack_Check_Limits        : constant Boolean := False;
-   Support_Aggregates        : constant Boolean := True;
-   Support_Atomic_Primitives : constant Boolean := True;
-   Support_Composite_Assign  : constant Boolean := True;
-   Support_Composite_Compare : constant Boolean := True;
-   Support_Long_Shifts       : constant Boolean := True;
-   Always_Compatible_Rep     : constant Boolean := False;
-   Suppress_Standard_Library : constant Boolean := False;
-   Use_Ada_Main_Program_Name : constant Boolean := False;
-   Frontend_Exceptions       : constant Boolean := False;
-   ZCX_By_Default            : constant Boolean := True;
-
-end System;

gcc/ada/system-linux-mips.ads

@@ -7,7 +7,7 @@
 --                                 S p e c                                  --
 --                          (GNU-Linux/MIPS Version)                        --
 --                                                                          --
---          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2017, Free Software Foundation, Inc.         --
 --                                                                          --
 -- This specification is derived from the Ada Reference Manual for use with --
 -- GNAT. The copyright notice above, and the license provisions that follow --
@@ -89,7 +89,8 @@ package System is
    --  Other System-Dependent Declarations
 
    type Bit_Order is (High_Order_First, Low_Order_First);
-   Default_Bit_Order : constant Bit_Order := High_Order_First;
+   Default_Bit_Order : constant Bit_Order :=
+                         Bit_Order'Val (Standard'Default_Bit_Order);
    pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
 
    --  Priority-related Declarations (RM D.1)

gcc/ada/system-linux-mipsel.ads

-------------------------------------------------------------------------------
---                                                                          --
---                        GNAT RUN-TIME COMPONENTS                          --
---                                                                          --
---                               S Y S T E M                                --
---                                                                          --
---                                 S p e c                                  --
---                        (GNU-Linux/MIPSEL Version)                        --
---                                                                          --
---          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
---                                                                          --
--- This specification is derived from the Ada Reference Manual for use with --
--- GNAT. The copyright notice above, and the license provisions that follow --
--- apply solely to the  contents of the part following the private keyword. --
---                                                                          --
--- 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 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.                                     --
---                                                                          --
--- 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.      --
---                                                                          --
-------------------------------------------------------------------------------
-
-package System is
-   pragma Pure;
-   --  Note that we take advantage of the implementation permission to make
-   --  this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
-   --  2005, this is Pure in any case (AI-362).
-
-   pragma No_Elaboration_Code_All;
-   --  Allow the use of that restriction in units that WITH this unit
-
-   type Name is (SYSTEM_NAME_GNAT);
-   System_Name : constant Name := SYSTEM_NAME_GNAT;
-
-   --  System-Dependent Named Numbers
-
-   Min_Int               : constant := Long_Long_Integer'First;
-   Max_Int               : constant := Long_Long_Integer'Last;
-
-   Max_Binary_Modulus    : constant := 2 ** Long_Long_Integer'Size;
-   Max_Nonbinary_Modulus : constant := Integer'Last;
-
-   Max_Base_Digits       : constant := Long_Long_Float'Digits;
-   Max_Digits            : constant := Long_Long_Float'Digits;
-
-   Max_Mantissa          : constant := 63;
-   Fine_Delta            : constant := 2.0 ** (-Max_Mantissa);
-
-   Tick                  : constant := 0.000_001;
-
-   --  Storage-related Declarations
-
-   type Address is private;
-   pragma Preelaborable_Initialization (Address);
-   Null_Address : constant Address;
-
-   Storage_Unit : constant := 8;
-   Word_Size    : constant := Standard'Word_Size;
-   Memory_Size  : constant := 2 ** Word_Size;
-
-   --  Address comparison
-
-   function "<"  (Left, Right : Address) return Boolean;
-   function "<=" (Left, Right : Address) return Boolean;
-   function ">"  (Left, Right : Address) return Boolean;
-   function ">=" (Left, Right : Address) return Boolean;
-   function "="  (Left, Right : Address) return Boolean;
-
-   pragma Import (Intrinsic, "<");
-   pragma Import (Intrinsic, "<=");
-   pragma Import (Intrinsic, ">");
-   pragma Import (Intrinsic, ">=");
-   pragma Import (Intrinsic, "=");
-
-   --  Other System-Dependent Declarations
-
-   type Bit_Order is (High_Order_First, Low_Order_First);
-   Default_Bit_Order : constant Bit_Order := Low_Order_First;
-   pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
-
-   --  Priority-related Declarations (RM D.1)
-
-   Max_Priority           : constant Positive := 30;
-   Max_Interrupt_Priority : constant Positive := 31;
-
-   subtype Any_Priority       is Integer      range  0 .. 31;
-   subtype Priority           is Any_Priority range  0 .. 30;
-   subtype Interrupt_Priority is Any_Priority range 31 .. 31;
-
-   Default_Priority : constant Priority := 15;
-
-private
-
-   type Address is mod Memory_Size;
-   Null_Address : constant Address := 0;
-
-   --------------------------------------
-   -- System Implementation Parameters --
-   --------------------------------------
-
-   --  These parameters provide information about the target that is used
-   --  by the compiler. They are in the private part of System, where they
-   --  can be accessed using the special circuitry in the Targparm unit
-   --  whose source should be consulted for more detailed descriptions
-   --  of the individual switch values.
-
-   Backend_Divide_Checks     : constant Boolean := False;
-   Backend_Overflow_Checks   : constant Boolean := True;
-   Command_Line_Args         : constant Boolean := True;
-   Configurable_Run_Time     : constant Boolean := False;
-   Denorm                    : constant Boolean := True;
-   Duration_32_Bits          : constant Boolean := False;
-   Exit_Status_Supported     : constant Boolean := True;
-   Fractional_Fixed_Ops      : constant Boolean := False;
-   Frontend_Layout           : constant Boolean := False;
-   Machine_Overflows         : constant Boolean := False;
-   Machine_Rounds            : constant Boolean := True;
-   Preallocated_Stacks       : constant Boolean := False;
-   Signed_Zeros              : constant Boolean := True;
-   Stack_Check_Default       : constant Boolean := False;
-   Stack_Check_Probes        : constant Boolean := True;
-   Stack_Check_Limits        : constant Boolean := False;
-   Support_Aggregates        : constant Boolean := True;
-   Support_Composite_Assign  : constant Boolean := True;
-   Support_Composite_Compare : constant Boolean := True;
-   Support_Long_Shifts       : constant Boolean := True;
-   Always_Compatible_Rep     : constant Boolean := False;
-   Suppress_Standard_Library : constant Boolean := False;
-   Use_Ada_Main_Program_Name : constant Boolean := False;
-   Frontend_Exceptions       : constant Boolean := False;
-   ZCX_By_Default            : constant Boolean := True;
-
-end System;

gcc/ada/system-linux-ppc.ads

@@ -7,7 +7,7 @@
 --                                 S p e c                                  --
 --                         (GNU-Linux/PPC Version)                          --
 --                                                                          --
---          Copyright (C) 1992-2016, Free Software Foundation, Inc.         --
+--          Copyright (C) 1992-2017, Free Software Foundation, Inc.         --
 --                                                                          --
 -- This specification is derived from the Ada Reference Manual for use with --
 -- GNAT. The copyright notice above, and the license provisions that follow --
@@ -89,7 +89,8 @@ package System is
    --  Other System-Dependent Declarations
 
    type Bit_Order is (High_Order_First, Low_Order_First);
-   Default_Bit_Order : constant Bit_Order := High_Order_First;
+   Default_Bit_Order : constant Bit_Order :=
+                         Bit_Order'Val (Standard'Default_Bit_Order);
    pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning
 
    --  Priority-related Declarations (RM D.1)