From 3c75355342a8562ccb65b8bbbe81a0495fec5c57 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 2 Mar 2015 01:58:54 +0000
Subject: [PATCH 01/14] Generate relocatable SDKs

This patch will modify the ELF linker scripts so that the crosssdk
linker will generate binaries with a 4096 bytes PT_INTERP section. When the binaries
will be relocated, at SDK install time, the interpreter path can be easily
changed by the relocating script.

Upstream-Status: Inappropriate [SDK specific]

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 ld/genscripts.sh      | 3 +++
 ld/scripttempl/elf.sc | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/ld/genscripts.sh b/ld/genscripts.sh
index a84d233..d12c4e2 100755
--- a/ld/genscripts.sh
+++ b/ld/genscripts.sh
@@ -277,6 +277,7 @@ DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
 LD_FLAG=r
 DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
 DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
+PARTIAL_LINKING=" "
 ( echo "/* Script for ld -r: link without relocation */"
   . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
@@ -285,10 +286,12 @@ DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
 LD_FLAG=u
 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
 CONSTRUCTING=" "
+PARTIAL_LINKING=" "
 ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
   . ${CUSTOMIZER_SCRIPT}
   . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xu
+unset PARTIAL_LINKING
 
 LD_FLAG=
 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index ec78c90..f9e7a31 100644
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -136,8 +136,8 @@ if test -n "${COMMONPAGESIZE}"; then
   DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
   DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
 fi
-if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then
-  INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp) }"
+if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}${PARTIAL_LINKING}"; then
+  INITIAL_READONLY_SECTIONS=".interp       ${RELOCATING-0} : { *(.interp); . = 0x1000; }"
 fi
 if test -z "$PLT"; then
   IPLT=".iplt         ${RELOCATING-0} : { *(.iplt) }"
-- 
2.7.1