mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-30 06:21:07 +00:00
91 lines
2.3 KiB
ArmAsm
91 lines
2.3 KiB
ArmAsm
/* Copyright (C) 2009-2015 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>
|
|
|
|
.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; \
|
|
cfi_undefined (sl); \
|
|
.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) \
|
|
cfi_remember_state; \
|
|
cmp sp, reg; \
|
|
bls .Lok; \
|
|
push { r7 }; \
|
|
cfi_adjust_cfa_offset (4); \
|
|
cfi_rel_offset (r7, 0); \
|
|
mov r5, r0; \
|
|
cfi_undefined (r5); \
|
|
mov r7, #SYS_ify(sigaltstack); \
|
|
mov r0, #0; \
|
|
sub sp, sp, #12; /* == sizeof (stack_t) */ \
|
|
cfi_adjust_cfa_offset (12); \
|
|
cfi_remember_state; \
|
|
mov r1, sp; \
|
|
swi #0; \
|
|
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: \
|
|
add sp, sp, #12; \
|
|
cfi_adjust_cfa_offset (-12); \
|
|
pop { r7 }; \
|
|
cfi_adjust_cfa_offset (-4); \
|
|
cfi_restore (r7); \
|
|
CALL_FAIL \
|
|
cfi_restore_state; \
|
|
.Lok2: \
|
|
mov r0, r5; \
|
|
cfi_restore_state; \
|
|
.Lok:
|
|
|
|
#include <__longjmp.S>
|