diff options
Diffstat (limited to 'sysdeps/alpha/stpcpy.S')
| -rw-r--r-- | sysdeps/alpha/stpcpy.S | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/alpha/stpcpy.S b/sysdeps/alpha/stpcpy.S new file mode 100644 index 0000000000..8b989d9800 --- /dev/null +++ b/sysdeps/alpha/stpcpy.S @@ -0,0 +1,55 @@ +/* Copyright (C) 1996-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@tamu.edu>, 1996. + + 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/>. */ + +/* Copy a null-terminated string from SRC to DST. Return a pointer + to the null-terminator in the source. */ + +#include <sysdep.h> + + .text + +ENTRY(__stpcpy) + ldgp gp, 0(pv) +#ifdef PROF + .set noat + lda AT, _mcount + jsr AT, (AT), _mcount + .set at +#endif + .prologue 1 + + jsr t9, __stxcpy # do the work of the copy + + and t8, 0xf0, t2 # binary search for byte offset of the + and t8, 0xcc, t1 # last byte written. + and t8, 0xaa, t0 + andnot a0, 7, a0 + cmovne t2, 4, t2 + cmovne t1, 2, t1 + cmovne t0, 1, t0 + addq a0, t2, v0 + addq t0, t1, t0 + addq v0, t0, v0 + + ret + + END(__stpcpy) + +weak_alias (__stpcpy, stpcpy) +libc_hidden_def (__stpcpy) +libc_hidden_builtin_def (stpcpy) |