86 lines
2.2 KiB
ArmAsm
86 lines
2.2 KiB
ArmAsm
/* longjmp for ARM.
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Copyright (C) 1997, 1998, 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include <sysdep.h>
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#define _SETJMP_H
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#define _ASM
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#include <bits/setjmp.h>
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#define __ASSEMBLY__
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#include <asm/procinfo.h>
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#include <rtld-global-offsets.h>
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/* __longjmp(jmpbuf, val) */
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ENTRY (__longjmp)
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mov ip, r0
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movs r0, r1 /* get the return value in place */
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moveq r0, #1 /* can't let setjmp() return zero! */
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LOADREGS(ia, ip!, {v1-v6, sl, fp, sp, lr})
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#ifdef IS_IN_rtld
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ldr a2, 1f
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ldr a3, Lrtld_local_ro
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0: add a2, pc, a2
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add a2, a2, a3
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ldr a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
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#else
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#ifdef PIC
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ldr a2, 1f
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ldr a3, Lrtld_global_ro
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0: add a2, pc, a2
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ldr a2, [a2, a3]
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ldr a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
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#else
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ldr a2, Lhwcap
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ldr a2, [a2, #0]
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#endif
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#endif
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tst a2, #HWCAP_VFP
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beq Lno_vfp
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/* Restore the VFP registers. */
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/* Following instruction is fldmiax ip!, {d8-d15}. */
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ldc p11, cr8, [r12], #68
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/* Restore the floating-point status register. */
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ldr r1, [ip], #4
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/* Following instruction is fmxr fpscr, r1. */
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mcr p10, 7, r1, cr1, cr0, 0
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Lno_vfp:
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DO_RET(lr)
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#ifdef IS_IN_rtld
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1: .long _GLOBAL_OFFSET_TABLE_ - 0b - 8
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Lrtld_local_ro:
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.long C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF)
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#else
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#ifdef PIC
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1: .long _GLOBAL_OFFSET_TABLE_ - 0b - 8
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Lrtld_global_ro:
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.long C_SYMBOL_NAME(_rtld_global_ro)(GOT)
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#else
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Lhwcap:
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.long C_SYMBOL_NAME(_dl_hwcap)
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#endif
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#endif
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END (__longjmp)
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