linux-stable.git/arch/c6x/include/asm/elf.h, branch master

c6x: remove architecture

2021-01-20T08:30:45+00:00

The c6x architecture was added to the kernel in 2011 at a time when
running Linux on DSPs was widely seen as the logical evolution.
It appears the trend has gone back to running Linux on Arm based SoCs
with DSP, using a better supported software ecosystem, and having better
real-time behavior for the DSP code. An example of this is TI's own
Keystone2 platform.

The upstream kernel port appears to no longer have any users. Mark
Salter remained avaialable to review patches, but mentioned that
he no longer has access to working hardware himself. Without any
users, it's best to just remove the code completely to reduce the
work for cross-architecture code changes.

Many thanks to Mark for maintaining the code for the past ten years.

Link: https://lore.kernel.org/lkml/41dc7795afda9f776d8cd0d3075f776cf586e97c.camel@redhat.com/
Signed-off-by: Arnd Bergmann

c6x: kill ELF_CORE_COPY_FPREGS

2020-10-26T00:03:06+00:00

not used anymore, now that fdpic coredump got switched to regset

Signed-off-by: Al Viro

whack-a-mole: USE_ELF_CORE_DUMP

2020-10-26T00:03:05+00:00

It's been killed off back in 2009.  Not a damn thing checks it.
Just die, already...

Signed-off-by: Al Viro

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

default SET_PERSONALITY() in linux/elf.h

2013-02-26T07:46:08+00:00

Signed-off-by: Al Viro

cross-arch: don't corrupt personality flags upon exec()

2012-10-05T18:04:47+00:00

Historically, the top three bytes of personality have been used for
things such as ADDR_NO_RANDOMIZE, which made sense only for specific
architectures.

We now however have a flag there that is general no matter the
architecture (UNAME26); generally we have to be careful to preserve the
personality flags across exec().

This patch tries to fix all architectures that forcefully overwrite
personality flags during exec() (ppc32 and s390 have been fixed recently
by commits f9783ec862ea ("[S390] Do not clobber personality flags on
exec") and 59e4c3a2fe9c ("powerpc/32: Don't clobber personality flags on
exec") in a similar way already).

Signed-off-by: Jiri Kosina 
Cc: Haavard Skinnemoen 
Cc: Hans-Christian Egtvedt 
Cc: Mike Frysinger 
Cc: Mark Salter 
Cc: Mikael Starvik 
Cc: Jesper Nilsson 
Cc: David Howells 
Cc: Yoshinori Sato 
Cc: Richard Kuo 
Cc: Hirokazu Takata 
Cc: Geert Uytterhoeven 
Cc: Michal Simek 
Cc: Koichi Yasutake 
Cc: Jonas Bonn 
Cc: Chen Liqin 
Cc: Lennox Wu 
Cc: Paul Mundt 
Cc: "David S. Miller" 
Cc: Chris Zankel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

C6X: add support to build with BINFMT_ELF_FDPIC

2012-05-15T13:17:34+00:00

C6x userspace supports a shared library mechanism called DSBT for systems with
no MMU. DSBT is similar to FDPIC in allowing shared text segments and private
copies of data segments without an MMU. Both methods access data using a base
register and offset. With FDPIC, the caller of an external function sets up the
base register for the callee. With DSBT, the called function sets up its own
base register. Other details differ but both userspaces need the same thing
from the kernel loader: a map of where each ELF segment was loaded. The FDPIC
loader already provides this, so DSBT just uses it.

This patch enables BINFMT_ELF_FDPIC by default for C6X and provides the
necessary architecture hooks for the generic loader.

Signed-off-by: Mark Salter

C6X: headers

2011-10-06T23:48:20+00:00

Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter 

Signed-off-by: Aurelien Jacquiot 
Signed-off-by: Mark Salter 
Acked-by: Arnd Bergmann