sysdeps/sh/____longjmp_chk.S

   1 /* Copyright (C) 2009 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19         .section .rodata.str1.1,"aMS",@progbits,1
  20         .type   longjmp_msg,@object
  21 longjmp_msg:
  22         .string "longjmp causes uninitialized stack frame"
  23         .size   longjmp_msg, .-longjmp_msg
  24         .text
  25
  26 #define __longjmp ____longjmp_chk
  27
  28 #ifdef PIC
  29 # define CALL_FAIL \
  30         mov.l   .Lfail, r1;                             \
  31         mov.l   .Lstr, r4;                              \
  32         mova    .Lgot, r0;                              \
  33         mov.l   .Lgot, r12;                             \
  34         add     r0, r12;                                \
  35         bsrf    r1;                                     \
  36          add    r12, r4;                                \
  37 .Lfail0:                                                \
  38         bra     0f;                                     \
  39          nop;                                           \
  40         .align  2;                                      \
  41 .Lgot:                                                  \
  42         .long   _GLOBAL_OFFSET_TABLE_;                  \
  43 .Lstr:                                                  \
  44         .long   longjmp_msg@GOTOFF;                     \
  45 .Lfail:                                                 \
  46         .long   __GI___fortify_fail@PLT-(.Lfail0-.);    \
  47 0:
  48 #else
  49 # define CALL_FAIL \
  50         mov.l   .Lfail, r1;                             \
  51         mov.l   .Lstr, r4;                              \
  52         jsr     @r1;                                    \
  53          nop;                                           \
  54         bra     0f;                                     \
  55          nop;                                           \
  56         .align  2;                                      \
  57 .Lstr:                                                  \
  58         .long   longjmp_msg;                            \
  59 .Lfail:                                                 \
  60         .long   __fortify_fail;                         \
  61 0:
  62 #endif
  63
  64 #define CHECK_SP(reg) \
  65         cmp/hs  r15, reg;                               \
  66         bt      .Lok;                                   \
  67         CALL_FAIL                                       \
  68 .Lok:
  69
  70 #include <__longjmp.S>