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

From a0b23b160d6cfa7be4437c6e623633d76395f2ad 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 01/16] 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 13e533aaf21..b0afff16e2e 100644
--- a/gold/layout.cc
+++ b/gold/layout.cc
@@ -5019,7 +5019,7 @@ 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 03392d265c7..435689ea144 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=${DATA_ALIGNMENT_}
 RELOCATING=" "
diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
index eb74743e5c3..c9a8a47615f 100644
--- a/ld/scripttempl/elf.sc
+++ b/ld/scripttempl/elf.sc
@@ -143,8 +143,8 @@ if test -z "$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) }"
-- 
2.28.0