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mirror of https://sourceware.org/git/glibc.git synced 2025-04-26 15:09:05 +03:00
glibc/sysdeps/unix/sysv/linux/arm/____longjmp_chk.S
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

91 lines
2.3 KiB
ArmAsm

/* Copyright (C) 2009-2021 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
<https://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>