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/* Copyright (C) 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#include <sysdep.h>
.section .rodata.str1.1,"aMS",%progbits,1
.type longjmp_msg,%object
longjmp_msg:
.string "longjmp causes uninitialized stack frame"
.size longjmp_msg, .-longjmp_msg
.text
#define __longjmp ____longjmp_chk
#ifdef PIC
# define CALL_FAIL \
ldr sl, .L_GOT; \
.L_GOT_OFF: \
add sl, pc, sl; \
ldr r0, .Lstr; \
add r0, sl, r0; \
B PLTJMP(HIDDEN_JUMPTARGET(__fortify_fail)); \
.L_GOT: \
.word _GLOBAL_OFFSET_TABLE_-(.L_GOT_OFF+8); \
.Lstr: \
.word longjmp_msg(GOTOFF);
#else
# define CALL_FAIL \
ldr r0, .Lstr; \
B HIDDEN_JUMPTARGET(__fortify_fail); \
.Lstr: \
.word longjmp_msg;
#endif
#define CHECK_SP(reg) \
cmp sp, reg; \
bls .Lok; \
mov r5, r0; \
mov r0, #0; \
sub sp, sp, #16; \
mov r1, sp; \
swi #SYS_ify(sigaltstack); \
cmp r0, #0; \
bne .Lok2; \
ldr r1, [sp, #4]; \
tst r1, #1; \
beq .Lfail; \
ldr r2, [sp, #0]; \
ldr r3, [sp, #8]; \
add r2, r2, r3; \
sub r2, r2, reg; \
cmp r2, r3; \
bhi .Lok2; \
.Lfail: \
CALL_FAIL \
.Lok2: \
mov r0, r5; \
.Lok:
#include <__longjmp.S>
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