mirror of
https://github.com/UberGames/rpgxEF.git
synced 2025-02-19 02:21:58 +00:00
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
|
/*
|
||
|
|
===========================================================================
|
||
|
|
Copyright (C) 2011 Thilo Schulz <thilo@tjps.eu>
|
||
|
|
|
||
|
|
This file is part of Quake III Arena source code.
|
||
|
|
|
||
|
|
Quake III Arena source code 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; either version 2 of the License,
|
||
|
|
or (at your option) any later version.
|
||
|
|
|
||
|
|
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
===========================================================================
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "qasm-inline.h"
|
||
|
|
#include "../qcommon/q_shared.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GNU inline asm version of qsnapvector
|
||
|
|
* See MASM snapvector.asm for commentary
|
||
|
|
*/
|
||
|
|
|
||
|
|
static unsigned char ssemask[16] __attribute__((aligned(16))) =
|
||
|
|
{
|
||
|
|
"\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\x00\x00\x00\x00"
|
||
|
|
};
|
||
|
|
|
||
|
|
void qsnapvectorsse(vec3_t vec)
|
||
|
|
{
|
||
|
|
__asm__ volatile
|
||
|
|
(
|
||
|
|
"movaps (%0), %%xmm1\n"
|
||
|
|
"movups (%1), %%xmm0\n"
|
||
|
|
"movaps %%xmm0, %%xmm2\n"
|
||
|
|
"andps %%xmm1, %%xmm0\n"
|
||
|
|
"andnps %%xmm2, %%xmm1\n"
|
||
|
|
"cvtps2dq %%xmm0, %%xmm0\n"
|
||
|
|
"cvtdq2ps %%xmm0, %%xmm0\n"
|
||
|
|
"orps %%xmm1, %%xmm0\n"
|
||
|
|
"movups %%xmm0, (%1)\n"
|
||
|
|
:
|
||
|
|
: "r" (ssemask), "r" (vec)
|
||
|
|
: "memory", "%xmm0", "%xmm1", "%xmm2"
|
||
|
|
);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#define QROUNDX87(src) \
|
||
|
|
"flds " src "\n" \
|
||
|
|
"fistps " src "\n" \
|
||
|
|
"filds " src "\n" \
|
||
|
|
"fstps " src "\n"
|
||
|
|
|
||
|
|
void qsnapvectorx87(vec3_t vec)
|
||
|
|
{
|
||
|
|
__asm__ volatile
|
||
|
|
(
|
||
|
|
QROUNDX87("(%0)")
|
||
|
|
QROUNDX87("4(%0)")
|
||
|
|
QROUNDX87("8(%0)")
|
||
|
|
:
|
||
|
|
: "r" (vec)
|
||
|
|
: "memory"
|
||
|
|
);
|
||
|
|
}
|