Alan Modra fa34303532 powerpc: Simplify module TOC handling ... commit c153693d7e upstream. PowerPC64 uses the symbol .TOC. much as other targets use _GLOBAL_OFFSET_TABLE_. It identifies the value of the GOT pointer (or in powerpc parlance, the TOC pointer). Global offset tables are generally local to an executable or shared library, or in the kernel, module. Thus it does not make sense for a module to resolve a relocation against .TOC. to the kernel's .TOC. value. A module has its own .TOC., and indeed the powerpc64 module relocation processing ignores the kernel value of .TOC. and instead calculates a module-local value. This patch removes code involved in exporting the kernel .TOC., tweaks modpost to ignore an undefined .TOC., and the module loader to twiddle the section symbol so that .TOC. isn't seen as undefined. Note that if the kernel was compiled with -msingle-pic-base then ELFv2 would not have function global entry code setting up r2. In that case the module call stubs would need to be modified to set up r2 using the kernel .TOC. value, requiring some of this code to be reinstated. mpe: Furthermore a change in binutils master (not yet released) causes the current way we handle the TOC to no longer work when building with MODVERSIONS=y and RELOCATABLE=n. The symptom is that modules can not be loaded due to there being no version found for TOC. Signed-off-by: Alan Modra <amodra@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-02-16 20:09:34 +01:00
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basic
coccinelle
dtc
gdb
genksyms	genksyms: Handle string literals with spaces in reference files	2018-01-10 09:27:13 +01:00
kconfig
ksymoops
mod	powerpc: Simplify module TOC handling	2018-02-16 20:09:34 +01:00
package	kbuild: pkg: use --transform option to prefix paths in tar	2017-12-16 10:33:54 +01:00
selinux
tracing
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asn1_compiler.c
bloat-o-meter
bootgraph.pl
check_extable.sh
check-lc_ctype.c
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checkkconfigsymbols.py
checkpatch.pl
checkstack.pl
checksyscalls.sh
checkversion.pl
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decodecode
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export_report.pl
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extract-sys-certs.pl
extract-vmlinux
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gcc-ld
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gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
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get_maintainer.pl
gfp-translate
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Kbuild.include
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Lindent
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Makefile
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Makefile.build	kbuild: modversions for EXPORT_SYMBOL() for asm	2018-01-23 19:50:17 +01:00
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Makefile.fwinst
Makefile.headersinst
Makefile.help
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Makefile.modpost
Makefile.modsign
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mkcompile_h
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module-common.lds	module: set __jump_table alignment to 8	2017-12-16 10:33:51 +01:00
namespace.pl
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