55 lines
1.4 KiB
ArmAsm
55 lines
1.4 KiB
ArmAsm
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/* Copyright (C) 1996-2022 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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<https://www.gnu.org/licenses/>. */
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/* Copy a null-terminated string from SRC to DST. Return a pointer
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to the null-terminator in the source. */
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#include <sysdep.h>
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.text
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ENTRY(__stpcpy)
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ldgp gp, 0(pv)
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#ifdef PROF
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.set noat
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lda AT, _mcount
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jsr AT, (AT), _mcount
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.set at
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#endif
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.prologue 1
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jsr t9, __stxcpy # do the work of the copy
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and t8, 0xf0, t2 # binary search for byte offset of the
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and t8, 0xcc, t1 # last byte written.
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and t8, 0xaa, t0
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andnot a0, 7, a0
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cmovne t2, 4, t2
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cmovne t1, 2, t1
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cmovne t0, 1, t0
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addq a0, t2, v0
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addq t0, t1, t0
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addq v0, t0, v0
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ret
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END(__stpcpy)
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weak_alias (__stpcpy, stpcpy)
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libc_hidden_def (__stpcpy)
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libc_hidden_builtin_def (stpcpy)
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