63 lines
2.7 KiB
ArmAsm
63 lines
2.7 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/macros.h"
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/ Verifies buffer contains only URI characters.
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/
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/ @param %rdi is data which should be 32-byte aligned
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/ @param %rsi is byte length of data
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/ @return number of kosher bytes
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/ @cost 10x faster than fastest Ragel code
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uricspn$avx:
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.leafprologue
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.profilable
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vmovaps .Luric(%rip),%xmm0
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mov $14,%eax
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mov %rsi,%rdx
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xor %esi,%esi
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0: vmovdqu (%rdi,%rsi),%xmm1
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vmovdqu 16(%rdi,%rsi),%xmm2
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vpcmpestri $0b00010100,%xmm1,%xmm0
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jc 1f
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jo 1f
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add $16,%rsi
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sub $16,%rdx
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vpcmpestri $0b00010100,%xmm2,%xmm0
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jc 1f
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jo 1f
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add $16,%rsi
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sub $16,%rdx
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jmp 0b
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1: lea (%rsi,%rcx),%rax
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.leafepilogue
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.endfn uricspn$avx,globl,hidden
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.rodata.cst16
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.Luric: .byte '!,'!
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.byte '$,';
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.byte '=,'=
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.byte '?,'Z
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.byte '_,'_
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.byte 'a,'z
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.byte '~,'~
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.byte 0,0
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.endobj .Luric
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.previous
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