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patches/gcc/4.4.5/260-sh-libgcc-stacks.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271 c65dc9b98841
permissions -rw-r--r--
cc/gcc: diable libsanitizer without NPTL

gcc-4.8 comes with a new library to sanitise memory access:
- heap-, stack-, and global-buffer overflow, use-after-free
- data-races between threads

This library requires some _np parts of the API, which are not
implemented in the (old) LinuxThreads, which is still available
in uClibc.

Since NPTL requires a i486 or above, i386 are stuck with using LT,
which precludes building the libsanitizer.

Disable libsanitizer, a bit like libatomic is.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Niels Penneman <niels@penneman.org> 
     1 diff -durN gcc-4.4.5.orig/gcc/config/sh/lib1funcs.asm gcc-4.4.5/gcc/config/sh/lib1funcs.asm

     2 --- gcc-4.4.5.orig/gcc/config/sh/lib1funcs.asm	2009-04-10 01:23:07.000000000 +0200

     3 +++ gcc-4.4.5/gcc/config/sh/lib1funcs.asm	2010-10-09 23:04:22.000000000 +0200

     4 @@ -30,6 +30,11 @@

     5  !! recoded in assembly by Toshiyasu Morita

     6  !! tm@netcom.com

     7  

     8 +#if defined(__ELF__) && defined(__linux__)

     9 +.section .note.GNU-stack,"",%progbits

    10 +.previous

    11 +#endif

    12 +

    13  /* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and

    14     ELF local label prefixes by J"orn Rennecke

    15     amylaar@cygnus.com  */

    16 diff -durN gcc-4.4.5.orig/gcc/config/sh/linux-atomic.asm gcc-4.4.5/gcc/config/sh/linux-atomic.asm

    17 --- gcc-4.4.5.orig/gcc/config/sh/linux-atomic.asm	2009-04-10 01:23:07.000000000 +0200

    18 +++ gcc-4.4.5/gcc/config/sh/linux-atomic.asm	2010-10-09 23:04:22.000000000 +0200

    19 @@ -136,3 +136,6 @@

    20  ATOMIC_FETCH_AND_COMBOP(nand,and,not,4,l,mov)

    21  

    22  #endif /* ! __SH5__ */

    23 +

    24 +.section .note.GNU-stack,"",%progbits

    25 +.previous
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