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Viewing changes to ports/sysdeps/unix/sysv/linux/arm/eabi/____longjmp_chk.S

  • Committer: Package Import Robot
  • Author(s): Adam Conrad
  • Date: 2012-10-26 05:14:58 UTC
  • mfrom: (1.5.1) (4.4.22 experimental)
  • Revision ID: package-import@ubuntu.com-20121026051458-oryotr4i03ob5pab
Tags: 2.16-0ubuntu1
* Merge with unreleased 2.16 in Debian experimental, remaining changes:
  - Drop the Breaks line from libc6, which refers to a Debian transition
  - Remove the libc6 recommends on libc6-i686, which we don't build
  - Enable libc6{,-dev}-armel on armhf and libc6{-dev}-armhf on armel
  - Ship update-locale and validlocale in /usr/sbin in libc-bin
  - Don't build locales or locales-all in Ubuntu, we rely on langpacks
  - Heavily mangle the way we do service restarting on major upgrades
  - Use different MIN_KERNEL_SUPPORTED versions than Debian, due to
    buildd needs.  This should be universally bumped to 3.2.0 once all
    our buildds (including the PPA guests) are running precise kernels
  - Build i386 variants as -march=i686, build amd64 with -O3, and build
    ppc64 variants (both 64-bit and 32-bit) with -O3 -fno-tree-vectorize
  - Re-enable unsubmitted-ldconfig-cache-abi.diff and rebuild the cache
    on upgrades from previous versions that used a different constant
  - debian/patches/any/local-CVE-2012-3406.diff: switch to malloc when
    array grows too large to handle via alloca extension (CVE-2012-3406)
  - Build generic i386/i686 flavour with -mno-tls-direct-seg-refs
* Changes added/dropped with this merge while reducing our delta:
  - Stop building glibc docs from the eglibc source, and instead make
    the glibc-docs stub have a hard dependency on glibc-doc-reference
  - Remove outdated conflicts against ancient versions of ia32-libs
  - Drop the tzdata dependency from libc6, it's in required and minimal
  - Use gcc-4.7/g++-4.7 by default on all our supported architectures
  - Save our historical changelog as changelog.ubuntu in the source
  - Drop nscd's libaudit build-dep for now, as libaudit is in universe
  - Drop the unnecessary Breaks from libc6 to locales and locales-all
  - Ship xen's ld.so.conf.d snippet as /etc/ld.so.conf.d/libc6-xen.conf
* Disable hard failures on the test suite for the first upload to raring

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ports/sysdeps/unix/sysv/linux/arm/eabi/____longjmp_chk.S
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/* Copyright (C) 2009 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
11
 
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
13
 
 
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, write to the Free
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   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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   02111-1307 USA.  */
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#include <sysdep.h>
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        .section .rodata.str1.1,"aMS",%progbits,1
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        .type   longjmp_msg,%object
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longjmp_msg:
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        .string "longjmp causes uninitialized stack frame"
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        .size   longjmp_msg, .-longjmp_msg
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        .text
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#define __longjmp ____longjmp_chk
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#ifdef PIC
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# define CALL_FAIL                                              \
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        ldr     sl, .L_GOT;                                     \
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        cfi_undefined (sl);                                     \
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.L_GOT_OFF:                                                     \
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        add     sl, pc, sl;                                     \
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        ldr     r0, .Lstr;                                      \
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        add     r0, sl, r0;                                     \
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        B       PLTJMP(HIDDEN_JUMPTARGET(__fortify_fail));      \
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.L_GOT:                                                         \
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        .word   _GLOBAL_OFFSET_TABLE_-(.L_GOT_OFF+8);           \
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.Lstr:                                                          \
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        .word   longjmp_msg(GOTOFF);
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#else
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# define CALL_FAIL                                      \
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        ldr     r0, .Lstr;                              \
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        B       HIDDEN_JUMPTARGET(__fortify_fail);      \
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.Lstr:                                                  \
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        .word   longjmp_msg;
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#endif
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#define CHECK_SP(reg)                           \
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        cfi_remember_state;                     \
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        cmp     sp, reg;                        \
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        bls     .Lok;                           \
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        str     r7, [sp, #-4]!;                 \
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        cfi_adjust_cfa_offset (4);              \
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        cfi_rel_offset (r7, 0);                 \
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        mov     r5, r0;                         \
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        cfi_undefined (r5);                     \
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        mov     r7, #SYS_ify(sigaltstack);      \
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        mov     r0, #0;                         \
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        sub     sp, sp, #12; /* == sizeof (stack_t) */ \
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        cfi_adjust_cfa_offset (12);             \
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        cfi_remember_state;                     \
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        mov     r1, sp;                         \
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        swi     #0;                             \
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        cmp     r0, #0;                         \
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        bne     .Lok2;                          \
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        ldr     r1, [sp, #4];                   \
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        tst     r1, #1;                         \
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        beq     .Lfail;                         \
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        ldr     r2, [sp, #0];                   \
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        ldr     r3, [sp, #8];                   \
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        add     r2, r2, r3;                     \
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        sub     r2, r2, reg;                    \
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        cmp     r2, r3;                         \
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        bhi     .Lok2;                          \
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.Lfail:                                         \
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        add     sp, sp, #12;                    \
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        cfi_adjust_cfa_offset (-12);            \
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        ldr     r7, [sp], #4;                   \
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        cfi_adjust_cfa_offset (-4);             \
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        cfi_restore (r7);                       \
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        CALL_FAIL                               \
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        cfi_restore_state;                      \
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.Lok2:                                          \
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        mov     r0, r5;                         \
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        cfi_restore_state;                      \
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.Lok:
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#include <__longjmp.S>