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patches/eglibc/ports-2_16/003-mips-rld-map-check.patch
author Johannes Stezenbach <js@sig21.net>
Tue Oct 30 00:22:25 2012 +0000 (2012-10-30)
changeset 3097 5c67476c7342
permissions -rw-r--r--
scripts/functions: fix endless loop in debug-shell with IO redirection

CT_DEBUG_INTERACTIVE is disabled when stdin, stdout or
stderr are redirected, but the check is only done at
the start of the build and doesn't catch when individual
build commands use redirection. When stdin is redirected
it will cause the debug shell to exit immediately, causing
and endless loop. Thus, save the stdin/our/err file handles
and restore them before invoking the debug shell.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Message-Id: <20121030102225.GA8303@sig21.net>
Patchwork-Id: 195409 
     1 

     2 On mips target, binutils currently sets DT_MIPS_RLD_MAP to 0 in dynamic

     3 section if a --version-script sets _RLD_MAP to local. This is apparently

     4 a binutils bug, but libc shouldn't segfault in this case.

     5 

     6 see also: http://sourceware.org/bugilla/show_bug.cgi?id=11615

     7 

     8 Upstream-Status: Pending

     9 

    10 9/19/2010 - added by Qing He <qing.he@intel.com>

    11 

    12 

    13 ---

    14 diff -ru glibc-2.10.1.orig/ports/sysdeps/mips/dl-machine.h glibc-2.10.1/sysdeps/mips/dl-machine.h

    15 --- glibc-2.10.1.orig/ports/sysdeps/mips/dl-machine.h	2009-05-16 16:36:20.000000000 +0800

    16 +++ glibc-2.10.1/ports/sysdeps/mips/dl-machine.h	2010-09-19 09:11:53.000000000 +0800

    17 @@ -70,7 +70,8 @@

    18  /* If there is a DT_MIPS_RLD_MAP entry in the dynamic section, fill it in

    19     with the run-time address of the r_debug structure  */

    20  #define ELF_MACHINE_DEBUG_SETUP(l,r) \

    21 -do { if ((l)->l_info[DT_MIPS (RLD_MAP)]) \

    22 +do { if ((l)->l_info[DT_MIPS (RLD_MAP)] && \

    23 +         (l)->l_info[DT_MIPS (RLD_MAP)]->d_un.d_ptr) \

    24         *(ElfW(Addr) *)((l)->l_info[DT_MIPS (RLD_MAP)]->d_un.d_ptr) = \

    25         (ElfW(Addr)) (r); \

    26     } while (0)
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