mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
57 lines
1.8 KiB
ArmAsm
57 lines
1.8 KiB
ArmAsm
/* Round float to int floating-point values, sparc64 version.
|
|
Copyright (C) 2012-2013 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 (__rintf)
|
|
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
|
|
retl
|
|
fors %f0, SIGN_BIT, %f0
|
|
END (__rintf)
|
|
weak_alias (__rintf, rintf)
|