/usr/src/gcc-6/debian/patches/ada-m68k.diff is in gcc-6-source 6.4.0-17ubuntu1.
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2011-10-12 Mikael Pettersson <mikpe@it.uu.se>
PR ada/48835
* gcc-interface/Makefile.in: Add support for m68k-linux.
* system-linux-m68k.ads: New file based on system-linux-ppc.ads
and system-vxworks-m68k.ads.
* s-memory.adb (Gnat_Malloc): New wrapper around Alloc, returning
the memory address as a pointer not an integer.
Add Gnat_Malloc -> __gnat_malloc export.
* s-memory.ads: Remove Alloc -> __gnat_malloc export.
Index: b/src/gcc/ada/gcc-interface/Makefile.in
===================================================================
--- a/src/gcc/ada/gcc-interface/Makefile.in
+++ b/src/gcc/ada/gcc-interface/Makefile.in
@@ -2084,6 +2084,35 @@ ifeq ($(strip $(filter-out hppa% linux%,
LIBRARY_VERSION := $(LIB_VERSION)
endif
+# M68K Linux
+ifeq ($(strip $(filter-out m68k% linux%,$(arch) $(osys))),)
+ LIBGNAT_TARGET_PAIRS = \
+ a-intnam.ads<a-intnam-linux.ads \
+ s-inmaop.adb<s-inmaop-posix.adb \
+ s-intman.adb<s-intman-posix.adb \
+ s-linux.ads<s-linux.ads \
+ s-osinte.adb<s-osinte-posix.adb \
+ s-osinte.ads<s-osinte-linux.ads \
+ s-osprim.adb<s-osprim-posix.adb \
+ s-taprop.adb<s-taprop-linux.adb \
+ s-tasinf.ads<s-tasinf-linux.ads \
+ s-tasinf.adb<s-tasinf-linux.adb \
+ s-taspri.ads<s-taspri-posix.ads \
+ s-tpopsp.adb<s-tpopsp-posix-foreign.adb \
+ system.ads<system-linux-m68k.ads
+
+ TOOLS_TARGET_PAIRS = \
+ mlib-tgt-specific.adb<mlib-tgt-specific-linux.adb \
+ indepsw.adb<indepsw-gnu.adb
+
+ EXTRA_GNATRTL_TASKING_OBJS=s-linux.o
+ EH_MECHANISM=-gcc
+ THREADSLIB = -lpthread
+ GNATLIB_SHARED = gnatlib-shared-dual
+ GMEM_LIB = gmemlib
+ LIBRARY_VERSION := $(LIB_VERSION)
+endif
+
# SH4 Linux
ifeq ($(strip $(filter-out sh4% linux%,$(target_cpu) $(target_os))),)
LIBGNAT_TARGET_PAIRS = \
Index: b/src/gcc/ada/s-memory.adb
===================================================================
--- a/src/gcc/ada/s-memory.adb
+++ b/src/gcc/ada/s-memory.adb
@@ -47,6 +47,7 @@ with Ada.Exceptions;
with System.Soft_Links;
with System.Parameters;
with System.CRTL;
+with Ada.Unchecked_Conversion;
package body System.Memory is
@@ -100,6 +101,22 @@ package body System.Memory is
return Result;
end Alloc;
+ type Char_Ptr is access all Character;
+ pragma Convention (C, Char_Ptr);
+ pragma No_Strict_Aliasing (Char_Ptr);
+
+ function To_Char_Ptr is
+ new Ada.Unchecked_Conversion (System.Address, Char_Ptr);
+
+ -- The function exported as __gnat_malloc MUST return a pointer type.
+ function Gnat_Malloc (Size : size_t) return Char_Ptr;
+ pragma Export (C, Gnat_Malloc, "__gnat_malloc");
+
+ function Gnat_Malloc (Size : size_t) return Char_Ptr is
+ begin
+ return To_Char_Ptr (Alloc (Size));
+ end Gnat_Malloc;
+
----------
-- Free --
----------
Index: b/src/gcc/ada/s-memory.ads
===================================================================
--- a/src/gcc/ada/s-memory.ads
+++ b/src/gcc/ada/s-memory.ads
@@ -100,7 +100,6 @@ private
-- The following names are used from the generated compiler code
- pragma Export (C, Alloc, "__gnat_malloc");
pragma Export (C, Free, "__gnat_free");
pragma Export (C, Realloc, "__gnat_realloc");
Index: b/src/gcc/ada/system-linux-m68k.ads
===================================================================
--- /dev/null
+++ b/src/gcc/ada/system-linux-m68k.ads
@@ -0,0 +1,154 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- S Y S T E M --
+-- --
+-- S p e c --
+-- (GNU/Linux/m68k Version) --
+-- --
+-- Copyright (C) 2014, 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).
+
+ 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 := 32;
+ Memory_Size : constant := 2 ** 32;
+
+ -- 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)
+
+ -- Is the following actually true for GNU/Linux/m68k?
+ --
+ -- 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 := False;
+ 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 := False;
+ 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;
+ ZCX_By_Default : constant Boolean := True;
+
+end System;
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