lwn.git/arch/powerpc/include/asm/elf.h, branch v3.9.2

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

powerpc: Fix up elf_read_implies_exec() usage

2009-05-21T05:44:21+00:00

We believe if a toolchain supports PT_GNU_STACK that it sets the proper PHDR permissions. Therefor elf_read_implies_exec() should only be true if we don't see PT_GNU_STACK set. Signed-off-by: Kumar Gala Signed-off-by: Benjamin Herrenschmidt

powerpc: ppc32 needs elf_read_implies_exec()

2009-04-28T03:52:19+00:00

On ppc64 we implemented elf_read_implies_exec() for 32-bit binaries because old toolchains had bugs where they didn't mark program segments executable that needed to be. For some reason we didn't do this on ppc32 builds. This hadn't been an issue until commit 8d30c14c ("powerpc/mm: Rework I$/D$ coherency (v3)"), which had as a side effect that we are now enforcing execute permissions to some extent on 32-bit 4xx and Book E processors. This fixes it by defining elf_read_implies_exec on 32-bit to turn on the read-implies-exec behaviour on programs that are sufficiently old that they don't have a PT_GNU_STACK program header. Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras

powerpc/32: Don't clobber personality flags on exec

2009-04-22T04:56:34+00:00

Now that ppc32 implements address randomization it also wants to inherit personality flags like ADDR_NO_RANDOMIZE across exec, for things like `setarch ppc -R' to work. But the ppc32 version of SET_PERSONALITY forcefully sets PER_LINUX, clearing all personality flags. So be careful about preserving the flags. Signed-off-by: Andreas Schwab Signed-off-by: Paul Mackerras

powerpc: Randomise PIEs

2009-02-23T04:53:21+00:00

Randomise ELF_ET_DYN_BASE, which is used when loading position independent executables. Signed-off-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt