projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b778ceb | 1 | /* Copyright (C) 1996-2021 Free Software Foundation, Inc. |
| 3c7b2587 | 2 | This file is part of the GNU C Library. |
| cf182b58 | 3 | |
| 3c7b2587 | 4 | The GNU C Library is free software; you can redistribute it and/or |
| 3214b89b AJ |
5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| cf182b58 | 8 | |
| 3c7b2587 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3214b89b | 12 | Lesser General Public License for more details. |
| cf182b58 | 13 | |
| 3214b89b | 14 | You should have received a copy of the GNU Lesser General Public |
| ab84e3ff | 15 | License along with the GNU C Library. If not, see |
| 5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
| cf182b58 UD |
17 | |
| 18 | /* Copy a null-terminated string from SRC to DST. Return a pointer | |
| 19 | to the null-terminator in the source. */ | |
| 20 | ||
| 21 | #include <sysdep.h> | |
| 22 | ||
| 23 | .text | |
| 24 | ||
| 25 | ENTRY(__stpcpy) | |
| 26 | ldgp gp, 0(pv) | |
| 60c74cf0 | 27 | #ifdef PROF |
| 3c7b2587 | 28 | .set noat |
| 60c74cf0 UD |
29 | lda AT, _mcount |
| 30 | jsr AT, (AT), _mcount | |
| 3c7b2587 | 31 | .set at |
| 60c74cf0 | 32 | #endif |
| cf182b58 UD |
33 | .prologue 1 |
| 34 | ||
| 35 | jsr t9, __stxcpy # do the work of the copy | |
| 36 | ||
| 37 | and t8, 0xf0, t2 # binary search for byte offset of the | |
| 38 | and t8, 0xcc, t1 # last byte written. | |
| 39 | and t8, 0xaa, t0 | |
| 40 | andnot a0, 7, a0 | |
| 41 | cmovne t2, 4, t2 | |
| 42 | cmovne t1, 2, t1 | |
| 43 | cmovne t0, 1, t0 | |
| 44 | addq a0, t2, v0 | |
| 45 | addq t0, t1, t0 | |
| 46 | addq v0, t0, v0 | |
| 47 | ||
| 48 | ret | |
| 49 | ||
| 50 | END(__stpcpy) | |
| 51 | ||
| 52 | weak_alias (__stpcpy, stpcpy) | |
| e5d48d74 | 53 | libc_hidden_def (__stpcpy) |
| 8a9a971c | 54 | libc_hidden_builtin_def (stpcpy) |