diff options
Diffstat (limited to 'REORG.TODO/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S')
| -rw-r--r-- | REORG.TODO/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S b/REORG.TODO/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S new file mode 100644 index 0000000000..62bd9f50c7 --- /dev/null +++ b/REORG.TODO/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S @@ -0,0 +1,72 @@ +/* llrint(), sparc32 v9 version. + Copyright (C) 2012-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David S. Miller <davem@davemloft.net>, 2012. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <math_ldbl_opt.h> + + /* We pop constants into the FPU registers using the incoming + argument stack slots, since this avoid having to use any PIC + references. We also thus avoid having to allocate a register + window. + + VIS instructions are used to facilitate the formation of + easier constants, and the propagation of the sign bit. */ + +#define TWO_FIFTYTWO 0x43300000 /* 2**52 */ + +#define ZERO %f10 /* 0.0 */ +#define SIGN_BIT %f12 /* -0.0 */ + +ENTRY (__llrint) + sethi %hi(TWO_FIFTYTWO), %o2 + sllx %o0, 32, %o0 + + or %o0, %o1, %o0 + fzero ZERO + + stx %o0, [%sp + 72] + sllx %o2, 32, %o2 + fnegd ZERO, SIGN_BIT + + ldd [%sp + 72], %f0 + + stx %o2, [%sp + 72] + fabsd %f0, %f14 + + ldd [%sp + 72], %f16 + fcmpd %fcc3, %f14, %f16 + + fmovduge %fcc3, ZERO, %f16 + fand %f0, SIGN_BIT, SIGN_BIT + + for %f16, SIGN_BIT, %f16 + faddd %f0, %f16, %f6 + fsubd %f6, %f16, %f0 + fabsd %f0, %f0 + for %f0, SIGN_BIT, %f0 + fdtox %f0, %f4 + std %f4, [%sp + 72] + retl + ldd [%sp + 72], %o0 +END (__llrint) +weak_alias (__llrint, llrint) + +#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1) +compat_symbol (libm, __llrint, llrintl, GLIBC_2_1) +#endif |