diff options
Diffstat (limited to 'sysdeps/vax/strchr.s')
| -rw-r--r-- | sysdeps/vax/strchr.s | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/sysdeps/vax/strchr.s b/sysdeps/vax/strchr.s deleted file mode 100644 index d56cb4b0a0..0000000000 --- a/sysdeps/vax/strchr.s +++ /dev/null @@ -1,103 +0,0 @@ -/* - * Copyright (c) 1988 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if defined(LIBC_SCCS) && !defined(lint) - .asciz "@(#)strchr.s 5.4 (Berkeley) 6/1/90" -#endif /* LIBC_SCCS and not lint */ - -/* - * Find the first occurrence of c in the string cp. - * Return pointer to match or null pointer. - * - * char * - * strchr(cp, c) - * char *cp, c; - */ -#include "DEFS.h" - - .lcomm tbl,256 - -ENTRY(strchr, 0) - movzwl $65535,r4 /* handy constant */ - movq 4(ap),r1 /* r1 = cp; r2 = c */ - movzbl r2,r2 - beql Lzero /* special case for c == '\0' */ - -/* - * Fancy scanc version. Alas, it is not reentrant. - */ - movab tbl,r3 /* r3 = base of table */ - bbss $0,(r3),Lreent /* ensure not reentering */ - movab (r3)[r2],r5 - incb (r5) /* mark both '\0' and c */ -0: - scanc r4,(r1),(r3),$1 /* look for c or '\0' */ - beql 0b /* still looking */ - movl r1,r0 /* return whatever we found */ - tstb (r0) - bneq 1f # unless it was '\0': - clrl r0 # then return NULL -1: - clrb (r5) /* clean up table */ - clrb (r3) - ret - -/* - * Special case for \0. - */ -Lzero: - locc r2,r4,(r1) /* just find end of string */ - beql Lzero /* still looking */ - movl r1,r0 /* found it */ - ret - -/* - * Slower reentrant version is two two-step searches. The first - * phase runs until we know where the string ends; it locates the - * first occurrence of c within a 65535-byte block. If we find - * the end of the string first, we switch to the second phase, - * were we look only up to the known end of string. - */ -Lreent: -0: /* first phase */ - movl r1,r3 - locc $0,r4,(r3) /* look for '\0' */ - bneq 1f - locc r2,r4,(r3) /* look for c */ - beql 0b /* not found: reset pointer and loop */ - movl r1,r0 /* found: return it */ - ret -1: /* second phase */ - subl3 r3,r1,r0 /* length of short block */ - locc r2,r0,(r3) /* look for c */ - beql 2f /* not found: return NULL */ - movl r1,r0 -2: ret - -weak_alias (strchr, index) |