linux-toradex.git/arch/powerpc/include/asm/elf.h, branch v3.17

powerpc: Clear ELF personality flag if ELFv2 is not requested.

2014-05-20T00:55:59+00:00

powerpc: Clear ELF personality flag if ELFv2 is not requested.

The POWER kernel uses a personality flag to determine whether it should
be setting up function descriptors or not (per the updated ABI).  This
flag wasn't being cleared on a new process but instead was being
inherited.  The visible effect was that an ELFv2 binary could not execve
to an ELFv1 binary.

Signed-off-by: Jeff Bailey 

 arch/powerpc/include/asm/elf.h | 2 ++
 1 file changed, 2 insertions(+)
Signed-off-by: Benjamin Herrenschmidt

powerpc: Set eflags correctly for ELF ABIv2 core dumps.

2013-11-20T22:19:18+00:00

We leave it at zero (though it could be 1) for old tasks.

Signed-off-by: Rusty Russell 
Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Add TIF_ELF2ABI flag.

2013-11-20T22:19:17+00:00

Little endian ppc64 is getting an exciting new ABI.  This is reflected
by the bottom two bits of e_flags in the ELF header:

	0 == legacy binaries (v1 ABI)
	1 == binaries using the old ABI (compiled with a new toolchain)
	2 == binaries using the new ABI.

We store this in a thread flag, because we need to set it in core
dumps and for signal delivery.  Our chief concern is that it doesn't
use function descriptors.

Signed-off-by: Rusty Russell 
Signed-off-by: Anton Blanchard 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Add HWCAP2 aux entry

2013-04-26T06:08:16+00:00

We are currently out of free bits in AT_HWCAP. With POWER8, we have
several hardware features that we need to advertise.

Tested on POWER and x86.

Signed-off-by: Michael Neuling 
Signed-off-by: Nishanth Aravamudan 
Signed-off-by: Benjamin Herrenschmidt

default SET_PERSONALITY() in linux/elf.h

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

Signed-off-by: Al Viro

UAPI: (Scripted) Disintegrate arch/powerpc/include/asm

2012-10-09T08:47:26+00:00

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Michael Kerrisk 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones

treewide: fix potentially dangerous trailing ';' in #defined values/expressions

2011-07-21T12:10:00+00:00

All these are instances of
  #define NAME value;
or
  #define NAME(params_opt) value;

These of course fail to build when used in contexts like
  if(foo $OP NAME)
  while(bar $OP NAME)
and may silently generate the wrong code in contexts such as
  foo = NAME + 1;    /* foo = value; + 1; */
  bar = NAME - 1;    /* bar = value; - 1; */
  baz = NAME & quux; /* baz = value; & quux; */

Reported on comp.lang.c,
Message-ID: 
Initial analysis of the dangers provided by Keith Thompson in that thread.

There are many more instances of more complicated macros having unnecessary
trailing semicolons, but this pile seems to be all of the cases of simple
values suffering from the problem. (Thus things that are likely to be found
in one of the contexts above, more complicated ones aren't.)

Signed-off-by: Phil Carmody 
Signed-off-by: Jiri Kosina

powerpc: Use is_32bit_task() helper to test 32-bit binary

2010-09-02T04:07:32+00:00

This patch removes all explicit tests for the TIF_32BIT flag

Signed-off-by: Denis Kirjanov 
Signed-off-by: Benjamin Herrenschmidt

powerpc: TIF_ABI_PENDING bit removal

2010-02-01T03:00:30+00:00

Here are the powerpc bits to remove TIF_ABI_PENDING now that
set_personality() is called at the appropriate place in exec.

Signed-off-by: Andreas Schwab 
Signed-off-by: Benjamin Herrenschmidt

elf: kill USE_ELF_CORE_DUMP

2009-12-16T15:20:12+00:00

Currently all architectures but microblaze unconditionally define
USE_ELF_CORE_DUMP.  The microblaze omission seems like an error to me, so
let's kill this ifdef and make sure we are the same everywhere.

Signed-off-by: Christoph Hellwig 
Acked-by: Hugh Dickins 
Cc: 
Cc: Michal Simek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds