Warning: That file was not part of the compilation database. It may have many parsing errors.

1/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
2 Contributed by Richard Henderson <rth@tamu.edu>, 1996.
3 EV67 optimized by Rick Gorton <rick.gorton@alpha-processor.com>.
4 This file is part of the GNU C Library.
5
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
10
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library. If not, see
18 <http://www.gnu.org/licenses/>. */
19
20/* Append no more than COUNT characters from the null-terminated string SRC
21 to the null-terminated string DST. Always null-terminate the new DST. */
22
23#include <sysdep.h>
24
25 .arch ev6
26 .set noreorder
27 .text
28
29ENTRY(strncat)
30 ldgp gp, 0(pv)
31#ifdef PROF
32 .set noat
33 lda AT, _mcount
34 jsr AT, (AT), _mcount
35 .set at
36#endif
37 .prologue 1
38
39 mov a0, v0 # set up return value
40 beq a2, $zerocount # U :
41 /* Find the end of the string. */
42 ldq_u t0, 0(a0) # L : load first quadword (a0 may be misaligned)
43 lda t1, -1 # E :
44
45 insqh t1, v0, t1 # U :
46 andnot a0, 7, a0 # E :
47 nop # E :
48 or t1, t0, t0 # E :
49
50 nop # E :
51 nop # E :
52 cmpbge zero, t0, t1 # E : bits set iff byte == 0
53 bne t1, $found # U :
54
55$loop: ldq t0, 8(a0) # L :
56 addq a0, 8, a0 # E :
57 cmpbge zero, t0, t1 # E :
58 beq t1, $loop # U :
59
60$found: cttz t1, t2 # U0 :
61 addq a0, t2, a0 # E :
62 jsr t9, __stxncpy # L0 : Now do the append.
63
64 /* Worry about the null termination. */
65
66 cttz t10, t2 # U0: byte offset of end-of-count.
67 bic a0, 7, a0 # E : word align the last write address.
68 zapnot t0, t8, t1 # U : was last byte a null?
69 nop # E :
70
71 bne t1, 0f # U :
72 nop # E :
73 nop # E :
74 ret # L0 :
75
760: addq t2, a0, a0 # E : address of end-of-count
77 stb zero, 1(a0) # L :
78 nop # E :
79 ret # L0 :
80
81$zerocount:
82 nop # E :
83 nop # E :
84 nop # E :
85 ret # L0 :
86
87 END(strncat)
88

Warning: That file was not part of the compilation database. It may have many parsing errors.