mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 05:40:06 +00:00
124 lines
2.9 KiB
ArmAsm
124 lines
2.9 KiB
ArmAsm
/* longjmp for ARM.
|
|
Copyright (C) 1997-2012 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>
|
|
#define _SETJMP_H
|
|
#define _ASM
|
|
#include <bits/setjmp.h>
|
|
#include <rtld-global-offsets.h>
|
|
#include <arm-features.h>
|
|
|
|
/* __longjmp(jmpbuf, val) */
|
|
|
|
ENTRY (__longjmp)
|
|
mov ip, r0
|
|
movs r0, r1 /* get the return value in place */
|
|
moveq r0, #1 /* can't let setjmp() return zero! */
|
|
|
|
#ifdef CHECK_SP
|
|
ldr r4, [ip, #32] /* jmpbuf's sp */
|
|
cfi_undefined (r4)
|
|
CHECK_SP (r4)
|
|
#endif
|
|
LOADREGS(ia, ip!, {v1-v6, sl, fp, sp, lr})
|
|
cfi_restore (v1)
|
|
cfi_restore (v2)
|
|
cfi_restore (v3)
|
|
cfi_restore (v4)
|
|
cfi_restore (v5)
|
|
cfi_restore (v6)
|
|
cfi_restore (sl)
|
|
cfi_restore (fp)
|
|
cfi_restore (sp)
|
|
cfi_restore (lr)
|
|
|
|
#if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__
|
|
# define NEED_HWCAP 1
|
|
#endif
|
|
|
|
#ifdef NEED_HWCAP
|
|
# ifdef IS_IN_rtld
|
|
ldr a2, 1f
|
|
ldr a3, .Lrtld_local_ro
|
|
0: add a2, pc, a2
|
|
add a2, a2, a3
|
|
ldr a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
|
|
# else
|
|
# ifdef PIC
|
|
ldr a2, 1f
|
|
ldr a3, .Lrtld_global_ro
|
|
0: add a2, pc, a2
|
|
ldr a2, [a2, a3]
|
|
ldr a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
|
|
# else
|
|
ldr a2, .Lhwcap
|
|
ldr a2, [a2, #0]
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef __SOFTFP__
|
|
tst a2, #HWCAP_ARM_VFP
|
|
beq .Lno_vfp
|
|
#endif
|
|
|
|
/* Restore the VFP registers. */
|
|
/* Following instruction is vldmia ip!, {d8-d15}. */
|
|
ldc p11, cr8, [r12], #64
|
|
/* Restore the floating-point status register. */
|
|
ldr a3, [ip], #4
|
|
/* Following instruction is fmxr fpscr, a3. */
|
|
mcr p10, 7, a3, cr1, cr0, 0
|
|
.Lno_vfp:
|
|
|
|
#ifndef ARM_ASSUME_NO_IWMMXT
|
|
tst a2, #HWCAP_ARM_IWMMXT
|
|
beq .Lno_iwmmxt
|
|
|
|
/* Restore the call-preserved iWMMXt registers. */
|
|
/* Following instructions are wldrd wr10, [ip], #8 (etc.) */
|
|
ldcl p1, cr10, [r12], #8
|
|
ldcl p1, cr11, [r12], #8
|
|
ldcl p1, cr12, [r12], #8
|
|
ldcl p1, cr13, [r12], #8
|
|
ldcl p1, cr14, [r12], #8
|
|
ldcl p1, cr15, [r12], #8
|
|
.Lno_iwmmxt:
|
|
#endif
|
|
|
|
DO_RET(lr)
|
|
|
|
#ifdef NEED_HWCAP
|
|
# ifdef IS_IN_rtld
|
|
1: .long _GLOBAL_OFFSET_TABLE_ - 0b - 8
|
|
.Lrtld_local_ro:
|
|
.long C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF)
|
|
# else
|
|
# ifdef PIC
|
|
1: .long _GLOBAL_OFFSET_TABLE_ - 0b - 8
|
|
.Lrtld_global_ro:
|
|
.long C_SYMBOL_NAME(_rtld_global_ro)(GOT)
|
|
# else
|
|
.Lhwcap:
|
|
.long C_SYMBOL_NAME(_dl_hwcap)
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
END (__longjmp)
|