04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
102 lines
2.6 KiB
ArmAsm
102 lines
2.6 KiB
ArmAsm
/* setjmp for ARM.
|
|
Copyright (C) 1997-2019 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 <stap-probe.h>
|
|
#include <bits/setjmp.h>
|
|
#include <rtld-global-offsets.h>
|
|
#include <arm-features.h>
|
|
|
|
ENTRY (__sigsetjmp)
|
|
#ifdef PTR_MANGLE
|
|
PTR_MANGLE_LOAD (a3, ip)
|
|
#endif
|
|
mov ip, r0
|
|
|
|
/* setjmp probe expects sigsetjmp first argument (4@r0), second
|
|
argument (-4@r1), and target address (4@r14), respectively. */
|
|
LIBC_PROBE (setjmp, 3, 4@r0, -4@r1, 4@r14)
|
|
|
|
/* Save sp and lr */
|
|
#ifdef PTR_MANGLE
|
|
mov a4, sp
|
|
PTR_MANGLE2 (a4, a4, a3)
|
|
str a4, [ip], #4
|
|
PTR_MANGLE2 (a4, lr, a3)
|
|
str a4, [ip], #4
|
|
#else
|
|
str sp, [ip], #4
|
|
str lr, [ip], #4
|
|
#endif
|
|
/* Save registers */
|
|
stmia ip!, JMP_BUF_REGLIST
|
|
|
|
#if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__
|
|
# define NEED_HWCAP 1
|
|
#endif
|
|
|
|
#ifdef NEED_HWCAP
|
|
/* Check if we have a VFP unit. */
|
|
# if IS_IN (rtld)
|
|
LDST_PCREL (ldr, a3, a4, \
|
|
C_SYMBOL_NAME(_rtld_local_ro) \
|
|
+ RTLD_GLOBAL_RO_DL_HWCAP_OFFSET)
|
|
# else
|
|
# ifdef SHARED
|
|
LDR_GLOBAL (a3, a4, C_SYMBOL_NAME(_rtld_global_ro), \
|
|
RTLD_GLOBAL_RO_DL_HWCAP_OFFSET)
|
|
# else
|
|
LDR_GLOBAL (a3, a4, C_SYMBOL_NAME(_dl_hwcap), 0)
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __SOFTFP__
|
|
tst a3, #HWCAP_ARM_VFP
|
|
beq .Lno_vfp
|
|
#endif
|
|
|
|
/* Store the VFP registers.
|
|
Don't use VFP instructions directly because this code
|
|
is used in non-VFP multilibs. */
|
|
/* Following instruction is vstmia ip!, {d8-d15}. */
|
|
stc p11, cr8, [ip], #64
|
|
.Lno_vfp:
|
|
|
|
#ifndef ARM_ASSUME_NO_IWMMXT
|
|
tst a3, #HWCAP_ARM_IWMMXT
|
|
beq .Lno_iwmmxt
|
|
|
|
/* Save the call-preserved iWMMXt registers. */
|
|
/* Following instructions are wstrd wr10, [ip], #8 (etc.) */
|
|
stcl p1, cr10, [r12], #8
|
|
stcl p1, cr11, [r12], #8
|
|
stcl p1, cr12, [r12], #8
|
|
stcl p1, cr13, [r12], #8
|
|
stcl p1, cr14, [r12], #8
|
|
stcl p1, cr15, [r12], #8
|
|
.Lno_iwmmxt:
|
|
#endif
|
|
|
|
/* Make a tail call to __sigjmp_save; it takes the same args. */
|
|
B PLTJMP(C_SYMBOL_NAME(__sigjmp_save))
|
|
|
|
END (__sigsetjmp)
|
|
|
|
hidden_def (__sigsetjmp)
|