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92cc8e332b
There was only one user. It's "condition" argument was used for "ia" rather than an actual condition. The apcs26 syntax is almost certainly not needed, given current binutils requirements.
126 lines
3.0 KiB
ArmAsm
126 lines
3.0 KiB
ArmAsm
/* longjmp for ARM.
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Copyright (C) 1997-2013 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 Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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/* ??? Needs more rearrangement for the LDM to handle thumb mode. */
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#define NO_THUMB
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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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#include <rtld-global-offsets.h>
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#include <arm-features.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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#ifdef CHECK_SP
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ldr r4, [ip, #32] /* jmpbuf's sp */
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cfi_undefined (r4)
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CHECK_SP (r4)
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#endif
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ldmia ip!, {v1-v6, sl, fp, sp, lr}
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cfi_restore (v1)
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cfi_restore (v2)
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cfi_restore (v3)
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cfi_restore (v4)
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cfi_restore (v5)
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cfi_restore (v6)
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cfi_restore (sl)
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cfi_restore (fp)
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cfi_restore (sp)
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cfi_restore (lr)
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#if !defined ARM_ASSUME_NO_IWMMXT || defined __SOFTFP__
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# define NEED_HWCAP 1
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#endif
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#ifdef NEED_HWCAP
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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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#endif
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#ifdef __SOFTFP__
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tst a2, #HWCAP_ARM_VFP
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beq .Lno_vfp
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#endif
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/* Restore the VFP registers. */
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/* Following instruction is vldmia ip!, {d8-d15}. */
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ldc p11, cr8, [r12], #64
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/* Restore the floating-point status register. */
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ldr a3, [ip], #4
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/* Following instruction is fmxr fpscr, a3. */
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mcr p10, 7, a3, cr1, cr0, 0
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.Lno_vfp:
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#ifndef ARM_ASSUME_NO_IWMMXT
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tst a2, #HWCAP_ARM_IWMMXT
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beq .Lno_iwmmxt
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/* Restore the call-preserved iWMMXt registers. */
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/* Following instructions are wldrd wr10, [ip], #8 (etc.) */
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ldcl p1, cr10, [r12], #8
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ldcl p1, cr11, [r12], #8
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ldcl p1, cr12, [r12], #8
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ldcl p1, cr13, [r12], #8
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ldcl p1, cr14, [r12], #8
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ldcl p1, cr15, [r12], #8
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.Lno_iwmmxt:
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#endif
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DO_RET(lr)
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#ifdef NEED_HWCAP
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# ifdef IS_IN_rtld
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1: .long _GLOBAL_OFFSET_TABLE_ - 0b - PC_OFS
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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 - PC_OFS
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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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#endif
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END (__longjmp)
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