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/* Copyright (C) 2009-2016 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 Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <rtld-global-offsets.h>
.section .rodata.str1.4,"aMS",@progbits,1
.align 2
.LC0:
.string "longjmp causes uninitialized stack frame"
.text
#define __longjmp_symbol ____longjmp_chk
#ifdef PIC
# define LOAD_ARG \
SETUP_GOT_ACCESS(r3,got_label2); \
addis r3,r3,_GLOBAL_OFFSET_TABLE_-got_label2@ha; \
addi r3,r3,_GLOBAL_OFFSET_TABLE_-got_label2@l; \
lwz r3,.LC0@got(r3)
#else
# define LOAD_ARG \
lis r3,.LC0@ha; \
la r3,.LC0@l(r3)
#endif
#define CHECK_SP(reg) \
cmplw reg, r1; \
bge+ .Lok; \
mflr r0; \
stwu r1,-32(r1); \
cfi_remember_state; \
cfi_adjust_cfa_offset (32); \
stw r0,36(r1); \
cfi_offset (lr, 4); \
mr r31,r3; \
mr r30,r4; \
li r3,0; \
addi r4,r1,8; \
li r0,__NR_sigaltstack; \
sc; \
/* Without working sigaltstack we cannot perform the test. */ \
bso .Lok2; \
lwz r0,12(r1); \
andi. r3,r0,1; \
beq .Lfail; \
lwz r0,16(r1); \
lwz r3,8(r1); \
add r3,r3,r0; \
sub r3,r3,reg; \
cmplw r3,r0; \
bge+ .Lok2; \
.Lfail: \
LOAD_ARG; \
bl HIDDEN_JUMPTARGET (__fortify_fail); \
.Lok2: \
mr r3,r31; \
mr r4,r30; \
cfi_restore_state; \
.Lok:
#include <__longjmp-common.S>
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