File libhugetlbfs.ppc64le.step2.patch of Package libhugetlbfs

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File libhugetlbfs.ppc64le.step2.patch of Package libhugetlbfs

Subject: libhugetlbfs.ppc64le.step2
From: Michel Normand <normand@linux.vnet.ibm.com>

Need to create the elf64lppc.c supposed to be a soft link of elf64ppc.c
But do not know hwo to do that via a patch <= TODO

Signed-off-by: Michel Normand <normand@linux.vnet.ibm.com>
---
 elf64lppc.c |   54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

Index: libhugetlbfs-2.16/elf64lppc.c
===================================================================
--- /dev/null
+++ libhugetlbfs-2.16/elf64lppc.c
@@ -0,0 +1,54 @@
+/*
+ * libhugetlbfs - Easy use of Linux hugepages
+ * Copyright (C) 2008 Adam Litke, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <elf.h>
+#include <link.h>
+
+#include "libhugetlbfs_internal.h"
+
+/*
+ * The powerpc 64-bit ELF ABI defines the location and size of the plt as
+ * follows (see the ELF ABI and powerpc64 supplement for details):
+ *
+ * Location:   (data segment p_vaddr) + (data segment p_filesz)
+ * Size:       (dynamic symbol table DT_PTRELSZ entry) + 24
+ *
+ * plt entries have likely been initialized when the libhugetlbfs remapping
+ * code runs, we must copy these entries when preparing the data segment.  Tell
+ * the arch-independent code how many bytes to copy.
+ */
+ElfW(Word) plt_extrasz(ElfW(Dyn) *dyntab)
+{
+	int i;
+	ElfW(Word) pltrelsz = 0;
+
+	/* Find the needed information in the dynamic section */
+	for (i = 0; dyntab[i].d_tag != DT_NULL; i++)
+		if (dyntab[i].d_tag == DT_PLTRELSZ)
+			pltrelsz = dyntab[i].d_un.d_val;
+
+	/* pltrelsz indicates the size of all plt entries used to cache
+	 * symbol lookups, but does not include the reserved entry at PLT[0].
+	 * 24 bytes is the ABI-defined size of a plt entry.
+	 */
+	if (pltrelsz)
+		return pltrelsz + 24;
+	else
+		return 0;
+}

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File libhugetlbfs.ppc64le.step2.patch of Package libhugetlbfs

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