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Justine Tunney
2020-06-15 07:18:57 -07:00
commit c91b3c5006
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libc/nexgen32e/ispunct.S Normal file
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/*-*- mode:asm; 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"
/ Checks for printable characters that aren't space / alnum.
/
/ @param edi is character to test (treated as uint8_t)
/ @return nonzero if character matches, otherwise 0
ispunct:.leafprologue
.profilable
xor %eax,%eax
cmp $255,%edi
ja 1f
movslq %edi,%rdi
ezlea kCtype,cx
mov (%rcx,%rdi),%dl
test $16,%dl
je 1f
xor %eax,%eax
and $7,%dl
sete %al
1: .leafepilogue
.endfn ispunct,globl
.yoink __FILE__