patches/uClibc/0.9.30.2/110-arm_fix_alignment.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Tue Oct 16 20:57:44 2012 +0200 (2012-10-16)
changeset 3079 37831a33e07e
permissions -rw-r--r--
kernel/linux: fix using custom location

Currently, extract and patch are skipped as thus:
- using a custom directory of pre-installed headers
- a correctly named directory already exists

Otherwise, extract and patch are done.

The current second condition is wrong, because it allows the following
sequence to happen:
- a non-custom kernel is used
- a previous build only partially extracted the non-custom sources
- that p[revious build broke during extraction (eg. incomplete tarball...)
- a subsequent build will find a properly named directory, and will
thus skip extract and patch, which is wrong

Fix that by following the conditions in this table:

Type | Extract | Patch
----------------------+---------+-------
Pre-installed headers | N | N
custom directory | N | N
custom tarball | Y | N
mainstream tarball | Y | Y

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: David Holsgrove <david.holsgrove@xilinx.com>
     1 Original patch from Gentoo.
     2 
     3 -= BEGIN original header =-
     4 ARMV5 can use STRD and LDRD access instructions but these accesses need to be 
     5 8 byte aligned. The dynamic linker's malloc needs to match this so structures
     6 become 8 byte aligned to void unaligned accesses.
     7 
     8 RP - 14/02/2008
     9 
    10 -= END original header =-
    11 
    12 Modified slightly for uClibc-0.9.30.2 by Joachim Nilsson <jocke@vmlinux.org>
    13 
    14 diff -durN uClibc-0.9.30.orig/ldso/ldso/arm/dl-sysdep.h uClibc-0.9.30/ldso/ldso/arm/dl-sysdep.h
    15 --- uClibc-0.9.30.orig/ldso/ldso/arm/dl-sysdep.h	2008-09-25 10:35:20.000000000 +0200
    16 +++ uClibc-0.9.30/ldso/ldso/arm/dl-sysdep.h	2009-02-07 09:57:59.000000000 +0100
    17 @@ -15,6 +15,8 @@
    18    GOT_BASE[1] = (unsigned long) MODULE; \
    19  }
    20  
    21 +#define DL_MALLOC_ALIGN 8  /* EABI needs 8 byte alignment for STRD LDRD*/
    22 +
    23  static __always_inline unsigned long arm_modulus(unsigned long m, unsigned long p)
    24  {
    25  	unsigned long i,t,inc;