| Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame^] | 1 | From 689d011688b5ff9481d4367bef3dea7a7b2867fb Mon Sep 17 00:00:00 2001 |
| 2 | From: Khem Raj <raj.khem@gmail.com> |
| 3 | Date: Mon, 2 Mar 2015 01:58:54 +0000 |
| 4 | Subject: [PATCH 01/15] binutils-crosssdk: Generate relocatable SDKs |
| 5 | |
| 6 | This patch will modify the ELF linker scripts so that the crosssdk |
| 7 | linker will generate binaries with a 4096 bytes PT_INTERP section. When the binaries |
| 8 | will be relocated, at SDK install time, the interpreter path can be easily |
| 9 | changed by the relocating script. |
| 10 | |
| 11 | Upstream-Status: Inappropriate [SDK specific] |
| 12 | |
| 13 | Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> |
| 14 | Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| 15 | --- |
| 16 | ld/genscripts.sh | 3 +++ |
| 17 | ld/scripttempl/elf.sc | 4 ++-- |
| 18 | 2 files changed, 5 insertions(+), 2 deletions(-) |
| 19 | |
| 20 | diff --git a/ld/genscripts.sh b/ld/genscripts.sh |
| 21 | index b6940d376d..a42c4d7a4b 100755 |
| 22 | --- a/ld/genscripts.sh |
| 23 | +++ b/ld/genscripts.sh |
| 24 | @@ -277,6 +277,7 @@ DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}" |
| 25 | LD_FLAG=r |
| 26 | DATA_ALIGNMENT=${DATA_ALIGNMENT_r} |
| 27 | DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" |
| 28 | +PARTIAL_LINKING=" " |
| 29 | ( echo "/* Script for ld -r: link without relocation */" |
| 30 | . ${CUSTOMIZER_SCRIPT} |
| 31 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 32 | @@ -285,10 +286,12 @@ DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})" |
| 33 | LD_FLAG=u |
| 34 | DATA_ALIGNMENT=${DATA_ALIGNMENT_u} |
| 35 | CONSTRUCTING=" " |
| 36 | +PARTIAL_LINKING=" " |
| 37 | ( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */" |
| 38 | . ${CUSTOMIZER_SCRIPT} |
| 39 | . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc |
| 40 | ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu |
| 41 | +unset PARTIAL_LINKING |
| 42 | |
| 43 | LD_FLAG= |
| 44 | DATA_ALIGNMENT=${DATA_ALIGNMENT_} |
| 45 | diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc |
| 46 | index e65f9a3ccf..d99d2c1d2a 100644 |
| 47 | --- a/ld/scripttempl/elf.sc |
| 48 | +++ b/ld/scripttempl/elf.sc |
| 49 | @@ -138,8 +138,8 @@ if test -z "$DATA_SEGMENT_ALIGN"; then |
| 50 | DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);" |
| 51 | fi |
| 52 | fi |
| 53 | -if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then |
| 54 | - INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp) }" |
| 55 | +if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}${PARTIAL_LINKING}"; then |
| 56 | + INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp); . = 0x1000; }" |
| 57 | fi |
| 58 | if test -z "$PLT"; then |
| 59 | IPLT=".iplt ${RELOCATING-0} : { *(.iplt) }" |
| 60 | -- |
| 61 | 2.12.0 |
| 62 | |