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authorDavid S. Miller <davem@davemloft.net>2012-03-02 18:57:20 -0800
committerDavid S. Miller <davem@davemloft.net>2012-03-02 18:59:09 -0800
commit6358490d55d0606bf5f2d48ed8b8f26d77364998 (patch)
tree43afcea9ecf1bd781e50c9bbfe33fd62d5aec01c /sysdeps/sparc/sparc64/fpu
parentd9a17c075e61609bee2b2c3014b53f8630f533a4 (diff)
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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/sparc64/fpu')
-rw-r--r--sysdeps/sparc/sparc64/fpu/s_llrint.S1
-rw-r--r--sysdeps/sparc/sparc64/fpu/s_llrintf.S1
-rw-r--r--sysdeps/sparc/sparc64/fpu/s_lrint.S63
-rw-r--r--sysdeps/sparc/sparc64/fpu/s_lrintf.S62
4 files changed, 127 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc64/fpu/s_llrint.S b/sysdeps/sparc/sparc64/fpu/s_llrint.S
new file mode 100644
index 0000000000..7c8e941b77
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/s_llrint.S
@@ -0,0 +1 @@
+/* llrint is implemented in s_lrint.S */
diff --git a/sysdeps/sparc/sparc64/fpu/s_llrintf.S b/sysdeps/sparc/sparc64/fpu/s_llrintf.S
new file mode 100644
index 0000000000..abab3b9a2b
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/s_llrintf.S
@@ -0,0 +1 @@
+/* llrintf is implemented in s_lrint.S */
diff --git a/sysdeps/sparc/sparc64/fpu/s_lrint.S b/sysdeps/sparc/sparc64/fpu/s_lrint.S
new file mode 100644
index 0000000000..6bf56e4d06
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/s_lrint.S
@@ -0,0 +1,63 @@
+/* lrint(), sparc64 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 (__lrint)
+ sethi %hi(TWO_FIFTYTWO), %o2
+ sllx %o2, 32, %o2
+ fzero ZERO
+
+ fnegd ZERO, SIGN_BIT
+ stx %o2, [%sp + STACK_BIAS + 128]
+ fabsd %f0, %f14
+
+ ldd [%sp + STACK_BIAS + 128], %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 + STACK_BIAS + 128]
+ retl
+ ldx [%sp + STACK_BIAS + 128], %o0
+END (__lrint)
+weak_alias (__lrint, lrint)
+
+strong_alias (__lrint, __llrint)
+weak_alias (__llrint, llrint)
diff --git a/sysdeps/sparc/sparc64/fpu/s_lrintf.S b/sysdeps/sparc/sparc64/fpu/s_lrintf.S
new file mode 100644
index 0000000000..2f2938b985
--- /dev/null
+++ b/sysdeps/sparc/sparc64/fpu/s_lrintf.S
@@ -0,0 +1,62 @@
+/* lrintf(), sparc64 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_TWENTYTHREE 0x4b000000 /* 2**23 */
+
+#define ZERO %f10 /* 0.0 */
+#define SIGN_BIT %f12 /* -0.0 */
+
+ENTRY (__lrintf)
+ sethi %hi(TWO_TWENTYTHREE), %o2
+ fzeros ZERO
+
+ fnegs ZERO, SIGN_BIT
+ st %o2, [%sp + STACK_BIAS + 128]
+ fabss %f1, %f14
+
+ ld [%sp + STACK_BIAS + 128], %f16
+ fcmps %fcc3, %f14, %f16
+
+ fmovsuge %fcc3, ZERO, %f16
+ fands %f1, SIGN_BIT, SIGN_BIT
+
+ fors %f16, SIGN_BIT, %f16
+ fadds %f1, %f16, %f5
+ fsubs %f5, %f16, %f0
+ fabss %f0, %f0
+ fors %f0, SIGN_BIT, %f0
+ fstox %f0, %f4
+ std %f4, [%sp + STACK_BIAS + 128]
+ retl
+ ldx [%sp + STACK_BIAS + 128], %o0
+END (__lrintf)
+weak_alias (__lrintf, lrintf)
+
+strong_alias (__lrintf, __llrintf)
+weak_alias (__llrintf, llrintf)