[PTX] malloc/realloc/free

[Nathan Sidwell <nathan at acm dot org>]

This patch removes the malloc/realloc/free wrappers from libgcc.  I've 
implemented  them  completely in C and  put them in the ptx newlib port -- where 
one expects such functions.

applied to trunk.

nathan

2016-05-26  Nathan Sidwell  <nathan@acm.org>

	* config/nvptx/free.asm: Delete.
	* config/nvptx/malloc.asm: Delete.
	* config/nvptx/realloc.c: Delete.
	* t-nvptx: Update.

Index: libgcc/config/nvptx/free.asm
===================================================================
--- libgcc/config/nvptx/free.asm	(revision 236701)
+++ libgcc/config/nvptx/free.asm	(nonexistent)
@@ -1,50 +0,0 @@
-// A wrapper around free to enable a realloc implementation.
-
-// Copyright (C) 2014-2016 Free Software Foundation, Inc.
-
-// This file is free software; you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This file is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-
-// 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/>.
-
-        .version        3.1
-        .target sm_30
-        .address_size 64
-
-.extern .func free(.param.u64 %in_ar1);
-
-// BEGIN GLOBAL FUNCTION DEF: __nvptx_free
-.visible .func __nvptx_free(.param.u64 %in_ar1)
-{
-	.reg.u64 %ar1;
-	.reg.u64 %hr10;
-	.reg.u64 %r23;
-	.reg.pred %r25;
-	.reg.u64 %r27;
-	ld.param.u64 %ar1, [%in_ar1];
-		mov.u64	%r23, %ar1;
-		setp.eq.u64 %r25,%r23,0;
-	@%r25	bra	$L1;
-		add.u64	%r27, %r23, -8;
-	{
-		.param.u64 %out_arg0;
-		st.param.u64 [%out_arg0], %r27;
-		call free, (%out_arg0);
-	}
-$L1:
-	ret;
-	}
Index: libgcc/config/nvptx/malloc.asm
===================================================================
--- libgcc/config/nvptx/malloc.asm	(revision 236701)
+++ libgcc/config/nvptx/malloc.asm	(nonexistent)
@@ -1,55 +0,0 @@
-// A wrapper around malloc to enable a realloc implementation.
-
-// Copyright (C) 2014-2016 Free Software Foundation, Inc.
-
-// This file is free software; you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option) any
-// later version.
-
-// This file is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-
-// 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/>.
-
-        .version        3.1
-        .target sm_30
-        .address_size 64
-
-.extern .func (.param.u64 %out_retval) malloc(.param.u64 %in_ar1);
-
-// BEGIN GLOBAL FUNCTION DEF: __nvptx_malloc
-.visible .func (.param.u64 %out_retval) __nvptx_malloc(.param.u64 %in_ar1)
-{
-        .reg.u64 %ar1;
-.reg.u64 %retval;
-        .reg.u64 %hr10;
-        .reg.u64 %r26;
-        .reg.u64 %r28;
-        .reg.u64 %r29;
-        .reg.u64 %r31;
-        ld.param.u64 %ar1, [%in_ar1];
-		mov.u64 %r26, %ar1;
-		add.u64 %r28, %r26, 8;
-        {
-		.param.u64 %retval_in;
-		.param.u64 %out_arg0;
-		st.param.u64 [%out_arg0], %r28;
-		call (%retval_in), malloc, (%out_arg0);
-		ld.param.u64    %r29, [%retval_in];
-        }
-		st.u64  [%r29], %r26;
-		add.u64 %r31, %r29, 8;
-		mov.u64 %retval, %r31;
-		st.param.u64    [%out_retval], %retval;
-		ret;
-}
Index: libgcc/config/nvptx/realloc.c
===================================================================
--- libgcc/config/nvptx/realloc.c	(revision 236701)
+++ libgcc/config/nvptx/realloc.c	(nonexistent)
@@ -1,50 +0,0 @@
-/* Implement realloc with the help of the malloc and free wrappers.
-
-   Copyright (C) 2014-2016 Free Software Foundation, Inc.
-
-   This file is free software; you can redistribute it and/or modify it
-   under the terms of the GNU General Public License as published by the
-   Free Software Foundation; either version 3, or (at your option) any
-   later version.
-
-   This file is distributed in the hope that it will be useful, but
-   WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
-
-   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/>.  */
-
-#include <stddef.h>
-#include "nvptx-malloc.h"
-
-void *
-__nvptx_realloc (void *ptr, size_t newsz)
-{
-  if (newsz == 0)
-    {
-      __nvptx_free (ptr);
-      return NULL;
-    }
-  void *newptr = __nvptx_malloc (newsz);
-
-  size_t oldsz;
-  if (ptr == NULL)
-    oldsz = 0;
-  else
-    {
-      size_t *sp = __extension__ (size_t *)(ptr - 8);
-      oldsz = *sp;
-    }
-  if (oldsz != 0)
-    __builtin_memcpy (newptr, ptr, oldsz > newsz ? newsz : oldsz);
-
-  __nvptx_free (ptr);
-  return newptr;
-}
Index: libgcc/config/nvptx/t-nvptx
===================================================================
--- libgcc/config/nvptx/t-nvptx	(revision 236702)
+++ libgcc/config/nvptx/t-nvptx	(working copy)
@@ -1,7 +1,4 @@
-LIB2ADD=$(srcdir)/config/nvptx/malloc.asm \
-	$(srcdir)/config/nvptx/free.asm \
-	$(srcdir)/config/nvptx/realloc.c \
-	$(srcdir)/config/nvptx/reduction.c
+LIB2ADD=$(srcdir)/config/nvptx/reduction.c
 
 LIB2ADDEH=
 LIB2FUNCS_EXCLUDE=__main