mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-29 08:11:08 +00:00
88f4b6929c
This allows us to define a generic no-op version of PTR_MANGLE and PTR_DEMANGLE. In the future, we can use PTR_MANGLE and PTR_DEMANGLE unconditionally in C sources, avoiding an unintended loss of hardening due to missing include files or unlucky header inclusion ordering. In i386 and x86_64, we can avoid a <tls.h> dependency in the C code by using the computed constant from <tcb-offsets.h>. <sysdep.h> no longer includes these definitions, so there is no cyclic dependency anymore when computing the <tcb-offsets.h> constants. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
75 lines
1.9 KiB
ArmAsm
75 lines
1.9 KiB
ArmAsm
/* setjmp for Nios II.
|
|
Copyright (C) 1991-2022 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>
|
|
#include <pointer_guard.h>
|
|
#include <jmpbuf-offsets.h>
|
|
|
|
.text
|
|
ENTRY(setjmp)
|
|
movi r5, 1
|
|
br __sigsetjmp
|
|
END(setjmp)
|
|
|
|
ENTRY(_setjmp)
|
|
mov r5, zero
|
|
br __sigsetjmp
|
|
END(_setjmp)
|
|
libc_hidden_def (_setjmp)
|
|
|
|
/* Save the current program position in ENV and return 0. */
|
|
ENTRY(__sigsetjmp)
|
|
#ifdef PTR_MANGLE
|
|
PTR_MANGLE_GUARD (r9)
|
|
#endif
|
|
stw r16, (JB_R16*4)(r4)
|
|
stw r17, (JB_R17*4)(r4)
|
|
stw r18, (JB_R18*4)(r4)
|
|
stw r19, (JB_R19*4)(r4)
|
|
stw r20, (JB_R20*4)(r4)
|
|
stw r21, (JB_R21*4)(r4)
|
|
stw r22, (JB_R22*4)(r4)
|
|
stw fp, (JB_FP*4)(r4)
|
|
#ifdef PTR_MANGLE
|
|
PTR_MANGLE (r6, ra, r9)
|
|
PTR_MANGLE (r7, sp, r9)
|
|
stw r6, (JB_RA*4)(r4)
|
|
stw r7, (JB_SP*4)(r4)
|
|
#else
|
|
stw ra, (JB_RA*4)(r4)
|
|
stw sp, (JB_SP*4)(r4)
|
|
#endif
|
|
#if IS_IN (rtld)
|
|
/* In ld.so we never save the signal mask. */
|
|
mov r2, zero
|
|
ret
|
|
#else
|
|
/* Save the signal mask if requested. */
|
|
#if defined(__PIC__) || defined(PIC)
|
|
nextpc r2
|
|
1: movhi r3, %hiadj(__sigjmp_save - 1b)
|
|
addi r3, r3, %lo(__sigjmp_save - 1b)
|
|
add r2, r2, r3
|
|
jmp r2
|
|
#else
|
|
jmpi __sigjmp_save
|
|
#endif
|
|
#endif
|
|
END (__sigsetjmp)
|
|
libc_hidden_def (__sigsetjmp)
|