diff options
Diffstat (limited to 'src/u_strncmp.S')
-rw-r--r-- | src/u_strncmp.S | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/src/u_strncmp.S b/src/u_strncmp.S deleted file mode 100644 index 694ae0f..0000000 --- a/src/u_strncmp.S +++ /dev/null @@ -1,81 +0,0 @@ -/* - * ======================== - * ===== =============== - * ====== ================ - * ====== ================ - * ====== ==== ==== == - * ====== === == = = - * ====== === = == = - * = === === = == ==== - * = === === = == = = - * == ===== ==== == - * ======================== - * - * SPDX-License-Identifier: BSD-3-Clause - * - * Copyright (c) 2020 Joe - * 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. - * 3. Neither the name of the organization 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 JOE ''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 JOE 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. - * - * bsdsetsid: src/u_strncmp.S - * 2020-11-21 18:47 - * Joe - * - * General error handling happen here. - */ - -.text -.globl u_strncmp - -u_strncmp: - xor %rcx, %rcx - dec %rdx -.u.loop: - xor %r8, %r8 - xor %r9, %r9 - movb (%rdi, %rcx), %r8b - movb (%rsi, %rcx), %r9b - cmpb %r8b, %r9b - jne .u.retdiff - cmp %rdx, %rcx - jge .u.retdiff - cmpb $0x0, (%rdi, %rcx) - jne .u.inc - cmpb $0x0, (%rsi, %rcx) - je .u.retzer -.u.inc: - inc %rcx - jmp .u.loop -.u.retdiff: - xor %r8, %r8 - xor %r9, %r9 - movb (%rdi, %rcx), %r8b - movb (%rsi, %rcx), %r9b - sub %r9, %r8 - xor %rax, %rax - movl %r8d, %eax - ret -.u.retzer: - xor %rax, %rax - ret |