mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 09:10:28 +00:00
![Warner Losh](/assets/img/avatar_default.png)
Apply the following automated changes to try to eliminate no-longer-needed sys/cdefs.h includes as well as now-empty blank lines in a row. Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/ Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/ Remove /\n+#if.*\n#endif.*\n+/ Remove /^#if.*\n#endif.*\n/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/ Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/ Sponsored by: Netflix
164 lines
3.9 KiB
C
164 lines
3.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2004-2005 David Schultz <das@FreeBSD.ORG>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <machine/fpu.h>
|
|
|
|
#define __fenv_static
|
|
#include "fenv.h"
|
|
|
|
#ifdef __GNUC_GNU_INLINE__
|
|
#error "This file must be compiled with C99 'inline' semantics"
|
|
#endif
|
|
|
|
const fenv_t __fe_dfl_env = {
|
|
{ 0xffff0000 | __INITIAL_FPUCW__,
|
|
0xffff0000,
|
|
0xffffffff,
|
|
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff }
|
|
},
|
|
__INITIAL_MXCSR__
|
|
};
|
|
|
|
extern inline int feclearexcept(int __excepts);
|
|
extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
|
|
|
|
int
|
|
fesetexceptflag(const fexcept_t *flagp, int excepts)
|
|
{
|
|
fenv_t env;
|
|
|
|
__fnstenv(&env.__x87);
|
|
env.__x87.__status &= ~excepts;
|
|
env.__x87.__status |= *flagp & excepts;
|
|
__fldenv(&env.__x87);
|
|
|
|
__stmxcsr(&env.__mxcsr);
|
|
env.__mxcsr &= ~excepts;
|
|
env.__mxcsr |= *flagp & excepts;
|
|
__ldmxcsr(&env.__mxcsr);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
feraiseexcept(int excepts)
|
|
{
|
|
fexcept_t ex = excepts;
|
|
|
|
fesetexceptflag(&ex, excepts);
|
|
__fwait();
|
|
return (0);
|
|
}
|
|
|
|
extern inline int fetestexcept(int __excepts);
|
|
extern inline int fegetround(void);
|
|
extern inline int fesetround(int __round);
|
|
|
|
int
|
|
fegetenv(fenv_t *envp)
|
|
{
|
|
|
|
__fnstenv(&envp->__x87);
|
|
__stmxcsr(&envp->__mxcsr);
|
|
/*
|
|
* fnstenv masks all exceptions, so we need to restore the
|
|
* control word to avoid this side effect.
|
|
*/
|
|
__fldcw(&envp->__x87.__control);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
feholdexcept(fenv_t *envp)
|
|
{
|
|
__uint32_t mxcsr;
|
|
|
|
__stmxcsr(&mxcsr);
|
|
__fnstenv(&envp->__x87);
|
|
__fnclex();
|
|
envp->__mxcsr = mxcsr;
|
|
mxcsr &= ~FE_ALL_EXCEPT;
|
|
mxcsr |= FE_ALL_EXCEPT << _SSE_EMASK_SHIFT;
|
|
__ldmxcsr(&mxcsr);
|
|
return (0);
|
|
}
|
|
|
|
extern inline int fesetenv(const fenv_t *__envp);
|
|
|
|
int
|
|
feupdateenv(const fenv_t *envp)
|
|
{
|
|
__uint32_t mxcsr;
|
|
__uint16_t status;
|
|
|
|
__fnstsw(&status);
|
|
__stmxcsr(&mxcsr);
|
|
fesetenv(envp);
|
|
feraiseexcept((mxcsr | status) & FE_ALL_EXCEPT);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
__feenableexcept(int mask)
|
|
{
|
|
__uint32_t mxcsr, omask;
|
|
__uint16_t control;
|
|
|
|
mask &= FE_ALL_EXCEPT;
|
|
__fnstcw(&control);
|
|
__stmxcsr(&mxcsr);
|
|
omask = ~(control | mxcsr >> _SSE_EMASK_SHIFT) & FE_ALL_EXCEPT;
|
|
control &= ~mask;
|
|
__fldcw(&control);
|
|
mxcsr &= ~(mask << _SSE_EMASK_SHIFT);
|
|
__ldmxcsr(&mxcsr);
|
|
return (omask);
|
|
}
|
|
|
|
int
|
|
__fedisableexcept(int mask)
|
|
{
|
|
__uint32_t mxcsr, omask;
|
|
__uint16_t control;
|
|
|
|
mask &= FE_ALL_EXCEPT;
|
|
__fnstcw(&control);
|
|
__stmxcsr(&mxcsr);
|
|
omask = ~(control | mxcsr >> _SSE_EMASK_SHIFT) & FE_ALL_EXCEPT;
|
|
control |= mask;
|
|
__fldcw(&control);
|
|
mxcsr |= mask << _SSE_EMASK_SHIFT;
|
|
__ldmxcsr(&mxcsr);
|
|
return (omask);
|
|
}
|
|
|
|
__weak_reference(__feenableexcept, feenableexcept);
|
|
__weak_reference(__fedisableexcept, fedisableexcept);
|