Mercurial > hg > CbC > CbC_gcc
diff gcc/config/spu/float_unssidf.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/spu/float_unssidf.c Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,45 @@ +/* Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc. + + This file 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 3 of the License, or (at your option) + any later version. + + This file 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. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +#include <spu_intrinsics.h> +const unsigned char __sidf_pat[16] __attribute__ ((__aligned__ (16))) = { + 0x02, 0x03, 0x10, 0x11, + 0x12, 0x13, 0x80, 0x80, + 0x06, 0x07, 0x14, 0x15, + 0x16, 0x17, 0x80, 0x80 +}; + +/* double __float_unssidf (unsigned int SI) */ +qword __float_unssidf (qword SI); +qword +__float_unssidf (qword SI) +{ + qword t0, t1, t2, t3, t4, t5, t6, t7; + t0 = si_clz (SI); + t1 = si_il (1054); + t2 = si_shl (SI, t0); + t3 = si_ceqi (t0, 32); + t4 = si_sf (t0, t1); + t5 = si_a (t2, t2); + t6 = si_andc (t4, t3); + t7 = si_shufb (t6, t5, *(const qword *) __sidf_pat); + return si_shlqbii (t7, 4); +}