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Diffstat (limited to 'ports/sysdeps/alpha/strncat.S')
| -rw-r--r-- | ports/sysdeps/alpha/strncat.S | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/ports/sysdeps/alpha/strncat.S b/ports/sysdeps/alpha/strncat.S deleted file mode 100644 index 28aa49e9e8..0000000000 --- a/ports/sysdeps/alpha/strncat.S +++ /dev/null @@ -1,94 +0,0 @@ -/* 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/>. */ - -/* Append no more than COUNT characters from the null-terminated string SRC - to the null-terminated string DST. Always null-terminate the new DST. */ - -#include <sysdep.h> - - .text - -ENTRY(strncat) - ldgp gp, 0(pv) -#ifdef PROF - .set noat - lda AT, _mcount - jsr AT, (AT), _mcount - .set at -#endif - .prologue 1 - - mov a0, v0 # set up return value - beq a2, $zerocount - - /* Find the end of the string. */ - - ldq_u t0, 0(a0) # load first quadword (a0 may be misaligned) - lda t1, -1(zero) - insqh t1, a0, t1 - andnot a0, 7, a0 - or t1, t0, t0 - cmpbge zero, t0, t1 # t1 <- bitmask: bit i == 1 <==> i-th byte == 0 - bne t1, $found - -$loop: ldq t0, 8(a0) - addq a0, 8, a0 # addr += 8 - cmpbge zero, t0, t1 - beq t1, $loop - -$found: negq t1, t2 # clear all but least set bit - and t1, t2, t1 - - and t1, 0xf0, t2 # binary search for that set bit - and t1, 0xcc, t3 - and t1, 0xaa, t4 - cmovne t2, 4, t2 - cmovne t3, 2, t3 - cmovne t4, 1, t4 - addq t2, t3, t2 - addq a0, t4, a0 - addq a0, t2, a0 - - /* Now do the append. */ - - jsr t9, __stxncpy - - /* Worry about the null termination. */ - - zapnot t0, t8, t1 # was last byte a null? - bne t1, 0f - ret - -0: and t10, 0x80, t1 - bne t1, 1f - - /* Here there are bytes left in the current word. Clear one. */ - addq t10, t10, t10 # end-of-count bit <<= 1 - zap t0, t10, t0 - stq_u t0, 0(a0) - ret - -1: /* Here we must read the next DST word and clear the first byte. */ - ldq_u t0, 8(a0) - zap t0, 1, t0 - stq_u t0, 8(a0) - -$zerocount: - ret - - END(strncat) |