/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│ │vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│ ╞══════════════════════════════════════════════════════════════════════════════╡ │ Copyright 2020 Justine Alexandra Roberts Tunney │ │ │ │ This program is free software; you can redistribute it and/or modify │ │ it under the terms of the GNU General Public License as published by │ │ the Free Software Foundation; version 2 of the License. │ │ │ │ This program 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 │ │ General Public License for more details. │ │ │ │ You should have received a copy of the GNU General Public License │ │ along with this program; if not, write to the Free Software │ │ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │ │ 02110-1301 USA │ ╚─────────────────────────────────────────────────────────────────────────────*/ #include "libc/macros.h" / 32-bit strnlen that's tiny and near optimal if data's tiny. / / @param RDI is wchar_t *s / @param RSI is size_t n / @param EAX is unsigned length / @see libc/nexgen32e/strsak32.S tinywcsnlen: .leafprologue .profilable xor %eax,%eax 1: cmp %esi,%eax jae 2f cmpl $0,(%rdi,%rax,4) jz 2f inc %eax jmp 1b 2: .leafepilogue .endfn tinywcsnlen,globl .source __FILE__