poky/meta/recipes-devtools/binutils/binutils/0001-binutils-crosssdk-Generate-relocatable-SDKs.patch

From 257ad1ce148417e1cefe2332d8acc5c8216c2522 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] binutils-crosssdk: 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.

generate larger .interp section for gold linker as well

Upstream-Status: Inappropriate [SDK specific]

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 gold/layout.cc        | 2 +-
 ld/genscripts.sh      | 3 +++
 ld/scripttempl/elf.sc | 4 ++--
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/gold/layout.cc b/gold/layout.cc
index a27cb071c75..32b52890b39 100644
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -5032,7 +5032,7 @@ Layout::create_interp(const Target* target)
       gold_assert(interp != NULL);
     }
 
-  size_t len = strlen(interp) + 1;
+  size_t len = 4096;
 
   Output_section_data* odata = new Output_data_const(interp, len, 1);
 
diff --git a/ld/genscripts.sh b/ld/genscripts.sh
index 088417ef2d5..46a2db7005c 100755
--- a/ld/genscripts.sh
+++ b/ld/genscripts.sh
@@ -304,6 +304,7 @@ 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 -r */"
   source_sh ${CUSTOMIZER_SCRIPT}
   source_sh ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
@@ -312,10 +313,12 @@ DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
 LD_FLAG=u
 DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
 CONSTRUCTING=" "
+PARTIAL_LINKING=" "
 ( echo "/* Script for -Ur */"
   source_sh ${CUSTOMIZER_SCRIPT}
   source_sh ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
 ) | sed -e '/^ *$/d;s/[	 ]*$//' > ldscripts/${EMULATION_NAME}.xu
+unset PARTIAL_LINKING
 
 DATA_ALIGNMENT=${DATA_ALIGNMENT_}
 RELOCATING=" "
diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index 29a8f0781d5..75e46f4adaf 100644
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -147,8 +147,8 @@ if test -z "$DATA_SEGMENT_ALIGN"; then
     DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
   fi
 fi
-if test -z "${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) }"