91 lines
3.3 KiB
PHP
91 lines
3.3 KiB
PHP
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 sw=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/nexgen32e/x86feature.h"
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#include "libc/macros.h"
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/ Broadcast byte literal to vector, e.g.
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/
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/ # xmm0=0x12121212121212121212121212121212
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/ .bcblit $0x12,%al,%eax,%xmm0
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/
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/ @param reg and regSI need to be the same register
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.macro .bcblit lit:req reg:req regSI:req xmm:req
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mov \lit,\reg
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movd \regSI,\xmm
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pbroadcastb \xmm
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.endm
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/ Broadcast word literal to vector, e.g.
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/
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/ # xmm0=0x01230123012301230123012301230123
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/ .bcwlit $0x123,%ax,%eax,%xmm0
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/
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/ @param reg and regSI need to be the same register
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.macro .bcwlit lit:req reg:req regSI:req xmm:req
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mov \lit,\reg
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movd \regSI,\xmm
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pbroadcastw \xmm
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.endm
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/ Broadcast int16 from register to vector.
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.macro .bcwreg regSI:req xmm:req
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movd \regSI,\xmm
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pbroadcastw \xmm
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.endm
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/ Sets all bytes in XMM register to first byte, e.g.
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/
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/ mov $0x11,%eax
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/ movd %eax,%xmm0
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/ pbroadcastb %xmm0
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/
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/ 11000000000000000000000000000000
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/ → 11111111111111111111111111111111
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/
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/ @param xmm can be %xmm0,%xmm1,etc.
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.macro pbroadcastb xmm:req
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#if X86_NEED(AVX2)
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vpbroadcastb \xmm,\xmm
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#else
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punpcklbw \xmm,\xmm
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punpcklwd \xmm,\xmm
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pshufd $0,\xmm,\xmm
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#endif
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.endm
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/ Sets all words in XMM register to first word, e.g.
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/
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/ mov $0x1234,%eax
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/ movd %eax,%xmm0
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/ pbroadcastw %xmm0
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/
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/ 12340000000000000000000000000000
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/ → 12341234123412341234123412341234
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/
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/ @param xmm can be %xmm0,%xmm1,etc.
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.macro pbroadcastw xmm:req
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#if X86_NEED(AVX2)
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vpbroadcastw \xmm,\xmm
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#else
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punpcklwd \xmm,\xmm
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pshufd $0,\xmm,\xmm
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#endif
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.endm
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