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c153693d7e
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Alan Modra c153693d7e powerpc: Simplify module TOC handling 
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.

Cc: stable@vger.kernel.org # 3.16+
Signed-off-by: Alan Modra <amodra@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-01-21 14:10:56 +11:00
..
basic fixdep: constify strrcmp arguments 2015-12-07 12:42:55 +01:00
coccinelle coccinelle: tests: unsigned value cannot be lesser than zero 2016-01-12 17:47:47 +01:00
dtc scripts/dtc: Update to upstream version 9d3649bd3be245c9 2015-04-29 17:17:27 -05:00
gdb scripts/gdb: remove useless global instruction 2015-06-30 19:44:58 -07:00
genksyms genksyms: Handle string literals with spaces in reference files 2015-12-09 15:19:23 +01:00
kconfig kconfig: fix qconf segfault by deleting heap objects 2016-01-11 09:45:08 +01:00
ksymoops
mod powerpc: Simplify module TOC handling 2016-01-21 14:10:56 +11:00
package package Makefile: fix perf-tar targets when outdir is set 2015-11-24 17:49:42 +01:00
selinux selinux: explicitly declare the role "base_r" 2015-07-13 13:32:00 -04:00
tracing kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
.gitignore DocBook: Use a fixed encoding for output 2015-09-28 01:31:48 -06:00
analyze_suspend.py PM / tools: analyze_suspend.py: update to v3.0 2014-08-09 02:47:58 +02:00
asn1_compiler.c ASN.1: Copy string names to tokens in ASN.1 compiler 2015-08-07 16:26:13 +01:00
bloat-o-meter scripts/bloat-o-meter: fix python3 syntax error 2016-01-14 16:00:49 -08:00
bootgraph.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
check_extable.sh scripts: add check_extable.sh script. 2015-04-13 21:03:02 +09:30
check-lc_ctype.c DocBook: Use a fixed encoding for output 2015-09-28 01:31:48 -06:00
checkincludes.pl
checkkconfigsymbols.py checkkconfigsymbols.py: find similar symbols 2015-12-14 10:54:23 -08:00
checkpatch.pl checkpatch: add virt barriers 2016-01-12 20:47:08 +02:00
checkstack.pl Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-10-07 21:16:26 -04:00
checksyscalls.sh x86/asm/entry: Move the arch/x86/syscalls/ definitions to arch/x86/entry/syscalls/ 2015-06-04 07:37:37 +02:00
checkversion.pl
cleanfile
cleanpatch
coccicheck Coccinelle: fix incorrect -include option transformation 2015-10-26 21:32:09 +01:00
config kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
conmakehash.c kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
decode_stacktrace.sh scripts: decode_stacktrace: fix ARM architecture decoding 2015-09-04 16:54:41 -07:00
decodecode scripts/decodecode: make faulting insn ptr more robust 2013-04-29 15:54:27 -07:00
depmod.sh depmod: pass -P $CONFIG_SYMBOL_PREFIX 2013-02-22 11:52:31 +01:00
diffconfig vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX 2015-02-16 17:56:04 -08:00
docproc.c kbuild: trivial - use tabs for code indent where possible 2014-06-10 14:00:53 +02:00
export_report.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
extract-cert.c KEYS: Remove unnecessary header #inclusions from extract-cert.c 2015-09-25 16:31:45 +01:00
extract-ikconfig scripts/extract-ikconfig: Support LZ4-compressed images. 2015-04-15 14:01:12 +02:00
extract-module-sig.pl KEYS: Provide a script to extract a module signature 2015-10-21 15:18:36 +01:00
extract-sys-certs.pl KEYS: Provide a script to extract the sys cert list from a vmlinux file 2015-10-21 15:18:36 +01:00
extract-vmlinux scripts: add extract-vmlinux 2011-08-31 16:12:17 +02:00
gcc-goto.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-ld kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-version.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-x86_32-has-stack-protector.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gcc-x86_64-has-stack-protector.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
gen_initramfs_list.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
get_maintainer.pl get_maintainer: add subsystem to reviewer output 2015-11-06 17:50:42 -08:00
gfp-translate chmod +x scripts/gfp-translate 2012-06-27 12:44:29 -07:00
headerdep.pl
headers_check.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
headers_install.sh Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2014-10-14 09:22:26 +02:00
headers.sh CRIS: Fix headers_install 2014-12-20 00:01:12 +01:00
kallsyms.c Kbuild: kallsyms: drop special handling of pre-3.0 GCC symbols 2015-04-07 13:04:51 +02:00
Kbuild.include Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-09-08 14:12:19 -07:00
kernel-doc A relatively boring cycle in the docs tree. There's a few kernel-doc 2016-01-17 11:55:07 -08:00
kernel-doc-xml-ref scripts/kernel-doc: Adding cross-reference links to html documentation. 2015-08-16 22:11:16 -06:00
ld-version.sh ld-version: Fix it on Fedora 2016-01-08 16:34:27 +01:00
Lindent scripts/Lindent: handle missing indent gracefully 2015-09-04 16:54:41 -07:00
link-vmlinux.sh um: link with -lpthread 2016-01-10 21:49:48 +01:00
Makefile DocBook: Use a fixed encoding for output 2015-09-28 01:31:48 -06:00
Makefile.asm-generic kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
Makefile.build kbuild: Allow to specify composite modules with modname-m 2015-11-25 11:23:25 +01:00
Makefile.clean Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-02-19 10:07:08 -08:00
Makefile.dtbinst kbuild: include $(src)/Makefile rather than $(obj)/Makefile 2015-04-02 16:42:08 +02:00
Makefile.extrawarn kbuild: Demote 'sign-compare' warning to W=2 2016-01-12 16:07:03 +01:00
Makefile.fwinst kbuild: include $(src)/Makefile rather than $(obj)/Makefile 2015-04-02 16:42:08 +02:00
Makefile.headersinst kbuild: collect shorthands into scripts/Kbuild.include 2014-11-26 14:36:52 +01:00
Makefile.help
Makefile.host kbuild: handle the dependency of multi-objs hostprogs appropriately 2014-08-19 10:26:20 +02:00
Makefile.kasan arm64: add KASAN support 2015-10-12 17:46:36 +01:00
Makefile.lib Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-01-20 09:45:43 -08:00
Makefile.modbuiltin
Makefile.modinst modsign: Abort modules_install when signing fails 2015-08-07 16:26:13 +01:00
Makefile.modpost modpost: Add flag -E for making section mismatches fatal 2015-10-06 10:46:21 +10:30
Makefile.modsign modsign: lookup lines ending in .ko in .mod files 2014-08-27 21:54:11 +09:30
makelst
markup_oops.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mkcompile_h kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
mkmakefile kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
mksysmap mksysmap: Add h8300 local symbol pattern 2015-06-23 13:35:47 +09:00
mkuboot.sh
mkversion
module-common.lds kernel: add support for .init_array.* constructors 2015-02-13 21:21:42 -08:00
namespace.pl
objdiff scripts: objdiff: support directories for the augument of record command 2014-06-10 14:59:33 +02:00
patch-kernel kbuild: trivial - remove trailing spaces 2014-04-30 17:34:32 +02:00
pnmtologo.c kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
profile2linkerlist.pl kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00
recordmcount.c ftrace/scripts: Fix incorrect use of sprintf in recordmcount 2016-01-04 11:13:16 -05:00
recordmcount.h recordmcount: Fix endianness handling bug for nop_mcount 2015-11-03 10:45:26 -05:00
recordmcount.pl scripts/recordmcount.pl: support data in text section on powerpc 2016-01-13 12:35:41 +11:00
setlocalversion Fix detectition of kernel git repository in setlocalversion script [take #2] 2014-01-03 14:48:42 +01:00
show_delta kbuild: trivial - remove trailing empty lines 2014-06-10 00:04:06 +02:00
sign-file.c MODSIGN: Change from CMS to PKCS#7 signing if the openssl is too old 2015-09-25 16:31:46 +01:00
sortextable.c ARCv2: extable: Enable sorting at build time 2015-06-22 14:06:56 +05:30
sortextable.h scripts/sortextable: suppress warning: `relocs_size' may be used uninitialized 2014-10-14 02:18:23 +02:00
spelling.txt scripts/spelling.txt: add some typo-words 2015-09-04 16:54:41 -07:00
stackdelta scripts: add stackdelta script 2015-08-28 17:04:40 +02:00
stackusage scripts: add stackusage script 2015-08-28 17:04:40 +02:00
tags.sh Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-01-20 10:10:23 -08:00
unifdef.c
ver_linux ver_linux: proc/modules, limit text processing to 'sed' 2015-10-17 21:55:26 -07:00
xen-hypercalls.sh xen: build infrastructure for generating hypercall depending symbols 2015-03-16 14:49:13 +00:00
xz_wrap.sh kbuild: Make scripts executable 2014-08-20 16:03:45 +02:00