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f862f06f32
When building the SDK, the final .interp section size should be set to a bigger value (0x1000) in order to be able to change the dynamic loader's path later. However, we shouldn't do that for partial linked objects (when -r or -rU is used). That's because those objects will then have an .interp section of 0x1000 even if it contains no data and when the final linking is done we will end up with a "cannot move location counter backwards" error. That's because the linker will try to squeeze all the data in the .interp sections found in various partial linked objects into one 0x1000 bytes final .interp section. [YOCTO #3264] (From OE-Core rev: b25d0c5fe286e44ded46aefdcbe35ed259087759) Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
50 lines
2.0 KiB
Diff
50 lines
2.0 KiB
Diff
Upstream-Status: Inappropriate [SDK specific]
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This patch will modify the ELF linker scripts so that the crosssdk linker will
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generate binaries with a 4096 bytes PT_INTERP section. When the binaries will
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be relocated, at SDK install time, the interpreter path can be easily changed
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by the relocating script.
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Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
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Index: binutils_git/ld/genscripts.sh
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===================================================================
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--- binutils_git.orig/ld/genscripts.sh 2012-11-21 11:58:23.325441925 +0200
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+++ binutils_git/ld/genscripts.sh 2012-11-21 12:03:42.106815400 +0200
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@@ -290,6 +290,7 @@
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LD_FLAG=r
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DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
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DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
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+PARTIAL_LINKING=" "
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( echo "/* Script for ld -r: link without relocation */"
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. ${CUSTOMIZER_SCRIPT}
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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@@ -298,10 +299,12 @@
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LD_FLAG=u
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DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
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CONSTRUCTING=" "
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+PARTIAL_LINKING=" "
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( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
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. ${CUSTOMIZER_SCRIPT}
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. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
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) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
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+unset PARTIAL_LINKING
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LD_FLAG=
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DATA_ALIGNMENT=${DATA_ALIGNMENT_}
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Index: binutils_git/ld/scripttempl/elf.sc
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===================================================================
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--- binutils_git.orig/ld/scripttempl/elf.sc 2012-11-21 12:02:26.800377384 +0200
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+++ binutils_git/ld/scripttempl/elf.sc 2012-11-21 12:04:16.166109621 +0200
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@@ -124,8 +124,8 @@
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DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
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DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
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fi
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-if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then
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- INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp) }"
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+if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}${PARTIAL_LINKING}"; then
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+ INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp); . = 0x1000; }"
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fi
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if test -z "$PLT"; then
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IPLT=".iplt ${RELOCATING-0} : { *(.iplt) }"
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