diff options
Diffstat (limited to 'REORG.TODO/sysdeps/alpha/alphaev67/strcat.S')
| -rw-r--r-- | REORG.TODO/sysdeps/alpha/alphaev67/strcat.S | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/alpha/alphaev67/strcat.S b/REORG.TODO/sysdeps/alpha/alphaev67/strcat.S new file mode 100644 index 0000000000..1d70061479 --- /dev/null +++ b/REORG.TODO/sysdeps/alpha/alphaev67/strcat.S @@ -0,0 +1,61 @@ +/* Copyright (C) 2000-2017 Free Software Foundation, Inc. + Contributed by Richard Henderson <rth@tamu.edu>, 1996. + EV67 optimized by Rick Gorton <rick.gorton@alpha-processor.com>. + This file is part of the GNU C Library. + + 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/>. */ + +/* Append a null-terminated string from SRC to DST. */ + +#include <sysdep.h> + + .arch ev6 + .set noreorder + .text + +ENTRY(strcat) + ldgp gp, 0(pv) +#ifdef PROF + .set noat + lda AT, _mcount + jsr AT, (AT), _mcount + .set at +#endif + .prologue 1 + + mov $16, $0 # E : set up return value + /* Find the end of the string. */ + ldq_u $1, 0($16) # L : load first quadword (a0 may be misaligned) + lda $2, -1 # E : + insqh $2, $16, $2 # U : + + andnot $16, 7, $16 # E : + or $2, $1, $1 # E : + cmpbge $31, $1, $2 # E : bits set iff byte == 0 + bne $2, $found # U : + +$loop: ldq $1, 8($16) # L : + addq $16, 8, $16 # E : + cmpbge $31, $1, $2 # E : + beq $2, $loop # U : + +$found: cttz $2, $3 # U0 : + addq $16, $3, $16 # E : + /* Now do the append. */ + mov $26, $23 # E : + jmp $31, __stxcpy # L0 : + + END(strcat) +libc_hidden_builtin_def (strcat) |