From: "Max Erhard" <erhard AT banstead DOT u-net DOT com>
Newsgroups: comp.os.msdos.djgpp
References: <3714D43E DOT 30777234 AT vortex DOT ufrgs DOT br>
Subject: Re: 3DNow! with DJGGP/GAS
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Date: Wed, 14 Apr 1999 22:25:20 +0100
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

what about using NASM instead ?

Luciano R. M. Silva wrote in message <3714D43E DOT 30777234 AT vortex DOT ufrgs DOT br>...
>Is there any version of GAS that supports 3DNow! opcodes...
>
>I started trying to add 3DNow! support to it but I dind't really
>understood well the format of I386.h in the way I could implement 3DNow!
>opcodes, which have two prefix bytes 0F0F then ModR/M byte and the real
>opcode byte in the end...
>
>That was my first guess (before a discovered that the opcode byte (after
>the 0xf0f0) must be really on the end)
>
>/* 3DNow! instructions */
>
>{"femms",     0, 0x0f0e, _, NoModrm, { 0, 0, 0 } },
>{"pavgusb",   2, 0x0f0fbf, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pf2id",     2, 0x0f0f1d, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfacc",     2, 0x0f0fae, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfadd",     2, 0x0f0f9e, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfcmpeq",   2, 0x0f0fb0, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfcmpge",   2, 0x0f0f90, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfcmpgt",   2, 0x0f0fa0, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfmax",     2, 0x0f0fa4, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfmin",     2, 0x0f0f94, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfmul",     2, 0x0f0fb4, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfrcp",     2, 0x0f0f96, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfrcpit1",  2, 0x0f0fa6, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfrcpit2",  2, 0x0f0fb6, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfrsqit1",  2, 0x0f0fa7, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfrsqrt",   2, 0x0f0f97, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfsub",     2, 0x0f0f9a, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pfsubr",    2, 0x0f0faa, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pi2fd",     2, 0x0f0f0d, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"pmulhrw",   2, 0x0f0fb7, _, Modrm, { RegMMX|WordMem, RegMMX, 0 } },
>{"prefetch",  1, 0x0f0d, 0, Modrm, { Mem, 0, 0 } },
>{"prefetchw", 1, 0x0f0d, 1, Modrm, { Mem, 0, 0 } },
>
>As the new GAS from binu2.8.1 already supports MMX (and it's registers)
>it's all almost done.
>I can't want to make programs with DJGPP supporting 3DNow!
>optimizations...
>BTW even if a wrong table I couldn't even recompile GAS because of the
>'sh' commands and other things I didn't understand in the makefiles.
>Can anyone help me ?
>
>Thanks
>