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hard float support for PowerPC taken from FreeBSD 

Signed-off-by: Eshan dhawan <eshandhawan51@gmail.com>
This commit is contained in:
Eshan dhawan via Newlib 2020-06-02 22:11:40 +05:30 committed by Corinna Vinschen
parent 8873f073c8
commit e6ce6f1430
18 changed files with 491 additions and 0 deletions
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1
newlib/configure.host
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@ -290,6 +290,7 @@ case "${host_cpu}" in
;;
powerpc*)
machine_dir=powerpc
libm_machine_dir=powerpc
;;
pru*)
newlib_cflags="${newlib_cflags} -DPREFER_SIZE_OVER_SPEED"

198
newlib/libc/machine/powerpc/machine/fenv-fp.h Normal file
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@ -0,0 +1,198 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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.
*
* $FreeBSD$
*/
__fenv_static inline int
feclearexcept(int excepts)
{
union __fpscr __r;
if (excepts & FE_INVALID)
excepts |= FE_ALL_INVALID;
__mffs(&__r);
__r.__bits.__reg &= ~excepts;
__mtfsf(__r);
return (0);
}
__fenv_static inline int
fegetexceptflag(fexcept_t *flagp, int excepts)
{
union __fpscr __r;
__mffs(&__r);
*flagp = __r.__bits.__reg & excepts;
return (0);
}
__fenv_static inline int
fesetexceptflag(const fexcept_t *flagp, int excepts)
{
union __fpscr __r;
if (excepts & FE_INVALID)
excepts |= FE_ALL_EXCEPT;
__mffs(&__r);
__r.__bits.__reg &= ~excepts;
__r.__bits.__reg |= *flagp & excepts;
__mtfsf(__r);
return (0);
}
__fenv_static inline int
feraiseexcept(int excepts)
{
union __fpscr __r;
if (excepts & FE_INVALID)
excepts |= FE_VXSOFT;
__mffs(&__r);
__r.__bits.__reg |= excepts;
__mtfsf(__r);
return (0);
}
__fenv_static inline int
fetestexcept(int excepts)
{
union __fpscr __r;
__mffs(&__r);
return (__r.__bits.__reg & excepts);
}
__fenv_static inline int
fegetround(void)
{
union __fpscr __r;
__mffs(&__r);
return (__r.__bits.__reg & _ROUND_MASK);
}
__fenv_static inline int
fesetround(int rounding_mode)
{
union __fpscr __r;
if (rounding_mode & ~_ROUND_MASK)
return (-1);
__mffs(&__r);
__r.__bits.__reg &= ~_ROUND_MASK;
__r.__bits.__reg |= rounding_mode;
__mtfsf(__r);
return (0);
}
__fenv_static inline int
fegetenv(fenv_t *envp)
{
union __fpscr __r;
__mffs(&__r);
*envp = __r.__bits.__reg;
return (0);
}
__fenv_static inline int
feholdexcept(fenv_t *envp)
{
union __fpscr __r;
__mffs(&__r);
*envp = __r.__bits.__reg;
__r.__bits.__reg &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
__mtfsf(__r);
return (0);
}
__fenv_static inline int
fesetenv(const fenv_t *envp)
{
union __fpscr __r;
__r.__bits.__reg = *envp;
__mtfsf(__r);
return (0);
}
__fenv_static inline int
feupdateenv(const fenv_t *envp)
{
union __fpscr __r;
__mffs(&__r);
__r.__bits.__reg &= FE_ALL_EXCEPT;
__r.__bits.__reg |= *envp;
__mtfsf(__r);
return (0);
}
#if __BSD_VISIBLE
/* We currently provide no external definitions of the functions below. */
static inline int
feenableexcept(int __mask)
{
union __fpscr __r;
fenv_t __oldmask;
__mffs(&__r);
__oldmask = __r.__bits.__reg;
__r.__bits.__reg |= (__mask & FE_ALL_EXCEPT) >> _FPUSW_SHIFT;
__mtfsf(__r);
return ((__oldmask & _ENABLE_MASK) << _FPUSW_SHIFT);
}
static inline int
fedisableexcept(int __mask)
{
union __fpscr __r;
fenv_t __oldmask;
__mffs(&__r);
__oldmask = __r.__bits.__reg;
__r.__bits.__reg &= ~((__mask & FE_ALL_EXCEPT) >> _FPUSW_SHIFT);
__mtfsf(__r);
return ((__oldmask & _ENABLE_MASK) << _FPUSW_SHIFT);
}
static inline int
fegetexcept(void)
{
union __fpscr __r;
__mffs(&__r);
return ((__r.__bits.__reg & _ENABLE_MASK) << _FPUSW_SHIFT);
}
#endif /* __BSD_VISIBLE */

132
newlib/libc/machine/powerpc/sys/fenv.h Normal file
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@ -0,0 +1,132 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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.
*
* $FreeBSD$
*/
#ifndef _SYS_FENV_H_
#define _SYS_FENV_H_
#include <sys/_types.h>
#include <machine/endian.h>
#ifndef __fenv_static
#define __fenv_static static
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef int fenv_t;
typedef int fexcept_t;
/* Exception flags */
#define FE_INEXACT 0x02000000
#define FE_DIVBYZERO 0x04000000
#define FE_UNDERFLOW 0x08000000
#define FE_OVERFLOW 0x10000000
#define FE_INVALID 0x20000000 /* all types of invalid FP ops */
/*
* The PowerPC architecture has extra invalid flags that indicate the
* specific type of invalid operation occurred. These flags may be
* tested, set, and cleared---but not masked---separately. All of
* these bits are cleared when FE_INVALID is cleared, but only
* FE_VXSOFT is set when FE_INVALID is explicitly set in software.
*/
#define FE_VXCVI 0x00000100 /* invalid integer convert */
#define FE_VXSQRT 0x00000200 /* square root of a negative */
#define FE_VXSOFT 0x00000400 /* software-requested exception */
#define FE_VXVC 0x00080000 /* ordered comparison involving NaN */
#define FE_VXIMZ 0x00100000 /* inf * 0 */
#define FE_VXZDZ 0x00200000 /* 0 / 0 */
#define FE_VXIDI 0x00400000 /* inf / inf */
#define FE_VXISI 0x00800000 /* inf - inf */
#define FE_VXSNAN 0x01000000 /* operation on a signalling NaN */
#define FE_ALL_INVALID (FE_VXCVI | FE_VXSQRT | FE_VXSOFT | FE_VXVC | \
FE_VXIMZ | FE_VXZDZ | FE_VXIDI | FE_VXISI | \
FE_VXSNAN | FE_INVALID)
#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
FE_ALL_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
/* Rounding modes */
#define FE_TONEAREST 0x0000
#define FE_TOWARDZERO 0x0001
#define FE_UPWARD 0x0002
#define FE_DOWNWARD 0x0003
#define _ROUND_MASK (FE_TONEAREST | FE_DOWNWARD | \
FE_UPWARD | FE_TOWARDZERO)
/* Default floating-point environment */
extern const fenv_t *_fe_dfl_env;
#define FE_DFL_ENV (_fe_dfl_env)
/* We need to be able to map status flag positions to mask flag positions */
#define _FPUSW_SHIFT 22
#define _ENABLE_MASK ((FE_DIVBYZERO | FE_INEXACT | FE_INVALID | \
FE_OVERFLOW | FE_UNDERFLOW) >> _FPUSW_SHIFT)
#ifndef _SOFT_FLOAT
#ifdef __SPE__
#define __mffs(__env) \
__asm __volatile("mfspr %0, 512" : "=r" ((__env)->__bits.__reg))
#define __mtfsf(__env) \
__asm __volatile("mtspr 512,%0;isync" :: "r" ((__env).__bits.__reg))
#else
#define __mffs(__env) \
__asm __volatile("mffs %0" : "=f" ((__env)->__d))
#define __mtfsf(__env) \
__asm __volatile("mtfsf 255,%0" :: "f" ((__env).__d))
#endif
#else
#define __mffs(__env)
#define __mtfsf(__env)
#endif
union __fpscr {
double __d;
struct {
#if _BYTE_ORDER == _LITTLE_ENDIAN
fenv_t __reg;
__uint32_t __junk;
#else
__uint32_t __junk;
fenv_t __reg;
#endif
} __bits;
};
#ifdef __cplusplus
}
#endif
#endif /* !_SYS_FENV_H_ */

1
newlib/libm/machine/configure.in
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@ -33,6 +33,7 @@ if test -n "${libm_machine_dir}"; then
spu) AC_CONFIG_SUBDIRS(spu) ;;
riscv) AC_CONFIG_SUBDIRS(riscv) ;;
x86_64) AC_CONFIG_SUBDIRS(x86_64) ;;
powerpc) AC_CONFIG_SUBDIRS(powerpc) ;;
esac;
if test "${use_libtool}" = "yes"; then
machlib=${libm_machine_dir}/lib${libm_machine_dir}.${aext}

20
newlib/libm/machine/powerpc/Makefile.am Normal file
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@ -0,0 +1,20 @@
## Process this file with automake to generate Makefile.in
INCLUDES = -I $(newlib_basedir)/../newlib/libm/common $(NEWLIB_CFLAGS) \
$(CROSS_CFLAGS) $(TARGET_CFLAGS)
LIB_SOURCES = \
feclearexcept.c fegetenv.c fegetexceptflag.c \
fegetround.c feholdexcept.c fenv.c feraiseexcept.c fesetenv.c \
fesetexceptflag.c fesetround.c fetestexcept.c feupdateenv.c
noinst_LIBRARIES = lib.a
lib_a_SOURCES = $(LIB_SOURCES)
lib_a_CFLAGS = $(AM_CFLAGS)
lib_a_CCASFLAGS = $(AM_CCASFLAGS)
noinst_DATA =
include $(srcdir)/../../../Makefile.shared
ACLOCAL_AMFLAGS = -I ../../.. -I ../../../..
CONFIG_STATUS_DEPENDENCIES = $(newlib_basedir)/configure.host

11
newlib/libm/machine/powerpc/configure.in Normal file
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@ -0,0 +1,11 @@
AC_PREREQ(2.59)
AC_INIT([newlib],[NEWLIB_VERSION])
AC_CONFIG_SRCDIR([Makefile.am])
AC_CONFIG_AUX_DIR(../../../..)
NEWLIB_CONFIGURE(../../..)
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

7
newlib/libm/machine/powerpc/feclearexcept.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fegetenv.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fegetexceptflag.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fegetround.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/feholdexcept.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

51
newlib/libm/machine/powerpc/fenv.c Normal file
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@ -0,0 +1,51 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2004 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.
*
* $FreeBSD$
*/
#define __fenv_static
#include <fenv.h>
#include <machine/fenv-fp.h>
#ifdef __GNUC_GNU_INLINE__
#error "This file must be compiled with C99 'inline' semantics"
#endif
extern inline int feclearexcept(int excepts);
extern inline int fegetexceptflag(fexcept_t *flagp, int excepts);
extern inline int fesetexceptflag(const fexcept_t *flagp, int excepts);
extern inline int feraiseexcept(int excepts);
extern inline int fetestexcept(int excepts);
extern inline int fegetround(void);
extern inline int fesetround(int rounding_mode);
extern inline int fegetenv(fenv_t *envp);
extern inline int feholdexcept(fenv_t *envp);
extern inline int fesetenv(const fenv_t *envp);
extern inline int feupdateenv(const fenv_t *envp);

7
newlib/libm/machine/powerpc/feraiseexcept.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fesetenv.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fesetexceptflag.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fesetround.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/fetestexcept.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"

7
newlib/libm/machine/powerpc/feupdateenv.c Normal file
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@ -0,0 +1,7 @@
/*
* SPDX-License-Identifier: BSD-2-Clause
*
* (c) Copyright 2019 Joel Sherrill <joel@rtems.org>
*/
#include "../../fenv/fenv_stub.c"