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author | David S. Miller <davem@davemloft.net> | 2012-03-02 18:57:20 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2012-03-02 18:59:09 -0800 |
commit | 6358490d55d0606bf5f2d48ed8b8f26d77364998 (patch) | |
tree | 43afcea9ecf1bd781e50c9bbfe33fd62d5aec01c /sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S | |
parent | d9a17c075e61609bee2b2c3014b53f8630f533a4 (diff) | |
download | glibc-6358490d55d0606bf5f2d48ed8b8f26d77364998.tar.gz glibc-6358490d55d0606bf5f2d48ed8b8f26d77364998.tar.xz glibc-6358490d55d0606bf5f2d48ed8b8f26d77364998.zip |
Add sparc optimized {l,}rint{,f} for 32-bit v9 and 64-bit.
* sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/s_llrintf.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/s_lrint.S: New file. * sysdeps/sparc/sparc32/sparcv9/fpu/s_lrintf.S: New file. * sysdeps/sparc/sparc64/fpu/s_llrint.S: New file. * sysdeps/sparc/sparc64/fpu/s_llrintf.S: New file. * sysdeps/sparc/sparc64/fpu/s_lrint.S: New file. * sysdeps/sparc/sparc64/fpu/s_lrintf.S: New file.
Diffstat (limited to 'sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S')
-rw-r--r-- | sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S b/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S new file mode 100644 index 0000000000..8ec9b4dcb4 --- /dev/null +++ b/sysdeps/sparc/sparc32/sparcv9/fpu/s_llrint.S @@ -0,0 +1,67 @@ +/* llrint(), sparc32 v9 version. + Copyright (C) 2012 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> + + /* 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) |