linux-toradex.git/scripts/mod/modpost.h, branch v3.18-rc6

Kbuild, lto: Drop .number postfixes in modpost

2014-02-14T04:24:58+00:00

LTO turns all global symbols effectively into statics. This
has the side effect that they all have a .NUMBER postfix to make
them unique. In modpost drop this postfix because it confuses
it.

Signed-off-by: Andi Kleen 
Link: http://lkml.kernel.org/r/1391846481-31491-8-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin

modpost: Fix modpost license checking of vmlinux.o

2012-04-10T03:52:56+00:00

Commit f02e8a6596b7 ("module: Sort exported symbols") sorts symbols
placing each of them in its own elf section.  This sorting and merging
into the canonical sections are done by the linker.

Unfortunately modpost to generate Module.symvers file parses vmlinux.o
(which is not linked yet) and all modules object files (which aren't
linked yet).  These aren't sanitized by the linker yet.  That breaks
modpost that can't detect license properly for modules.

This patch makes modpost aware of the new exported symbols structure.

[ This above is a slightly corrected version of the explanation of the
  problem, copied from commit 62a2635610db ("modpost: Fix modpost's
  license checking V3").  That commit fixed the problem for module
  object files, but not for vmlinux.o.  This patch fixes modpost for
  vmlinux.o. ]

Signed-off-by: Frank Rowand 
Signed-off-by: Alessio Igor Bogani 
Signed-off-by: Linus Torvalds

modpost: Update 64k section support for binutils 2.18.50

2011-05-19T07:25:28+00:00

Binutils 2.18.50 made a backwards-incompatible change in the way it
writes ELF objects with over 65280 sections, to improve conformance
with the ELF specification and interoperability with other ELF tools.
Specifically, it no longer adds 256 to section indices SHN_LORESERVE
and higher to skip over the reserved range SHN_LORESERVE through
SHN_HIRESERVE; those values are only considered special in the
st_shndx field, and not in other places where section indices are
stored.  See:

http://sourceware.org/bugzilla/show_bug.cgi?id=5900
http://groups.google.com/group/generic-abi/browse_thread/thread/e8bb63714b072e67/6c63738f12cc8a17

Signed-off-by: Anders Kaseorg 
Signed-off-by: Rusty Russell

modpost: support objects with more than 64k sections

2010-08-03T13:05:56+00:00

This patch makes modpost able to process object files with more than
64k sections. Needed for huge kernel builds (allyesconfig, for example)
with -ffunction-sections. 64k sections handling is covered, for example,
by this document:

"IA-64 gABI Proposal 74: Section Indexes"
http://www.codesourcery.com/public/cxx-abi/abi/prop-74-sindex.html

Signed-off-by: Denys Vlasenko 
Signed-off-by: Anders Kaseorg 
Acked-by: Sam Ravnborg 
Cc: Rusty Russell 
Cc: Andi Kleen 
Signed-off-by: Michal Marek

Kbuild: clear marker out of modpost

2009-12-15T05:58:31+00:00

Remove the unnecessary functions and variables.

Signed-off-by: Wenji Huang 
Signed-off-by: Michal Marek 
Signed-off-by: Rusty Russell

kbuild: soften modpost checks when doing cross builds

2008-03-23T20:38:54+00:00

The module alias support in the kernel have a consistency
check where it is checked that the size of a structure
in the kernel and on the build host are the same.
For cross builds this check does not make sense so detect
when we do cross builds and silently skip the check in these
situations.
This fixes a build bug for a wireless driver when cross building
for arm.

Acked-by: Michael Buesch 
Tested-by: Gordon Farquharson 
Signed-off-by: Sam Ravnborg 
Cc: stable@kernel.org

Linux Kernel Markers: create modpost file

2008-02-14T00:21:20+00:00

This adds some new magic in the MODPOST phase for CONFIG_MARKERS.  Analogous
to the Module.symvers file, the build will now write a Module.markers file
when CONFIG_MARKERS=y is set.  This file lists the name, defining module, and
format string of each marker, separated by \t characters.  This simple text
file can be used by offline build procedures for instrumentation code,
analogous to how System.map and Module.symvers can be useful to have for
kernels other than the one you are running right now.

The strings are made easy to extract by having the __trace_mark macro define
the name and format together in a single array called __mstrtab_* in the
__markers_strings section.  This is straightforward and reliable as long as
the marker structs are always defined by this macro.  It is an unreasonable
amount of hairy work to extract the string pointers from the __markers section
structs, which entails handling a relocation type for every machine under the
sun.

Mathieu :
- Ran through checkpatch.pl

Signed-off-by: Roland McGrath 
Signed-off-by: Mathieu Desnoyers 
Cc: David Smith 
Cc: Sam Ravnborg 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kbuild: try harder to find symbol names in modpost

2008-01-28T22:14:40+00:00

The relocation record sometimes contained an address
which was not an exactly match for a symbol.

Implment some simple logic such that if there
is a symbol within 20 bytes of the address contained
in the relocation record then print the name of this
symbol.

With this change modpost could find symbol names
for the remaining .init.text symbols in my
allyesconfig build for x86_64.

Signed-off-by: Sam Ravnborg

kbuild: Use Elfnn_Half as replacement for Elfnn_Section

2007-10-12T19:13:50+00:00

The Elfnn_Section is not available on all platforms,
noteworthy are cygwin.
Use the safe replacement _Half.

Signed-off-by: Sam Ravnborg

kbuild: make better section mismatch reports on i386 and mips

2007-07-16T19:48:49+00:00

On i386 and MIPS, warn_sec_mismatch() sometimes fails to show
usefull symbol name.  This is because empty 'refsym' due to 0 r_addend
value.  This patch is to adjust r_addend value, consulting with
apply_relocate() routine in kernel code.

Signed-off-by: Atsushi Nemoto 
Signed-off-by: Sam Ravnborg