/* =========================================================================== 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" \ "fistpl " src "\n" \ "fildl " src "\n" \ "fstps " src "\n" void qsnapvectorx87(vec3_t vec) { __asm__ volatile ( QROUNDX87("(%0)") QROUNDX87("4(%0)") QROUNDX87("8(%0)") : : "r" (vec) : "memory" ); }