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Support for mips architectures 

Changes needed for mips suport have been added.
Code for openlibm_fenv_mips.h, mips_fpmath.h and fenv.c
was taken from https://github.com/freebsd/freebsd
This commit is contained in:
Radovan Birdic 2017-01-24 16:19:33 +00:00 committed by Mo Zhou
parent a844d584d3
commit 4f5112ea59
7 changed files with 409 additions and 0 deletions
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3
Make.inc
View File

@ -67,6 +67,9 @@ endif
ifeq ($(ARCH),x86_64)
override ARCH := amd64
endif
ifeq ($(findstring mips,$(ARCH)),mips)
override ARCH := mips
endif
# If CFLAGS does not contain a -O optimization flag, default to -O3
ifeq ($(findstring -O,$(CFLAGS)),)

2
include/openlibm_fenv.h
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@ -10,6 +10,8 @@
#include <openlibm_fenv_i387.h>
#elif defined(__powerpc__)
#include <openlibm_fenv_powerpc.h>
#elif defined(__mips__)
#include <openlibm_fenv_mips.h>
#else
#error "Unsupported platform"
#endif

277
include/openlibm_fenv_mips.h Normal file
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@ -0,0 +1,277 @@
/*-
* 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 _FENV_H_
#define _FENV_H_
#include <sys/types.h>
#ifndef __fenv_static
#define __fenv_static static
#endif
typedef __uint32_t fenv_t;
typedef __uint32_t fexcept_t;
/* Exception flags */
#ifdef SOFTFLOAT
#define _FPUSW_SHIFT 16
#define FE_INVALID 0x0001
#define FE_DIVBYZERO 0x0002
#define FE_OVERFLOW 0x0004
#define FE_UNDERFLOW 0x0008
#define FE_INEXACT 0x0010
#else
#define _FCSR_CAUSE_SHIFT 10
#define FE_INVALID 0x0040
#define FE_DIVBYZERO 0x0020
#define FE_OVERFLOW 0x0010
#define FE_UNDERFLOW 0x0008
#define FE_INEXACT 0x0004
#endif
#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
FE_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)
__BEGIN_DECLS
/* 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 _ENABLE_SHIFT 5
#define _ENABLE_MASK (FE_ALL_EXCEPT << _ENABLE_SHIFT)
#ifndef SOFTFLOAT
#define __cfc1(__fcsr) __asm __volatile("cfc1 %0, $31" : "=r" (__fcsr))
#define __ctc1(__fcsr) __asm __volatile("ctc1 %0, $31" :: "r" (__fcsr))
#endif
#ifdef SOFTFLOAT
int feclearexcept(int __excepts);
int fegetexceptflag(fexcept_t *__flagp, int __excepts);
int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
int feraiseexcept(int __excepts);
int fetestexcept(int __excepts);
int fegetround(void);
int fesetround(int __round);
int fegetenv(fenv_t *__envp);
int feholdexcept(fenv_t *__envp);
int fesetenv(const fenv_t *__envp);
int feupdateenv(const fenv_t *__envp);
#else
__fenv_static inline int
feclearexcept(int __excepts)
{
fexcept_t fcsr;
__excepts &= FE_ALL_EXCEPT;
__cfc1(fcsr);
fcsr &= ~(__excepts | (__excepts << _FCSR_CAUSE_SHIFT));
__ctc1(fcsr);
return (0);
}
__fenv_static inline int
fegetexceptflag(fexcept_t *__flagp, int __excepts)
{
fexcept_t fcsr;
__excepts &= FE_ALL_EXCEPT;
__cfc1(fcsr);
*__flagp = fcsr & __excepts;
return (0);
}
__fenv_static inline int
fesetexceptflag(const fexcept_t *__flagp, int __excepts)
{
fexcept_t fcsr;
__excepts &= FE_ALL_EXCEPT;
__cfc1(fcsr);
fcsr &= ~__excepts;
fcsr |= *__flagp & __excepts;
__ctc1(fcsr);
return (0);
}
__fenv_static inline int
feraiseexcept(int __excepts)
{
fexcept_t fcsr;
__excepts &= FE_ALL_EXCEPT;
__cfc1(fcsr);
fcsr |= __excepts | (__excepts << _FCSR_CAUSE_SHIFT);
__ctc1(fcsr);
return (0);
}
__fenv_static inline int
fetestexcept(int __excepts)
{
fexcept_t fcsr;
__excepts &= FE_ALL_EXCEPT;
__cfc1(fcsr);
return (fcsr & __excepts);
}
__fenv_static inline int
fegetround(void)
{
fexcept_t fcsr;
__cfc1(fcsr);
return (fcsr & _ROUND_MASK);
}
__fenv_static inline int
fesetround(int __round)
{
fexcept_t fcsr;
if (__round & ~_ROUND_MASK)
return (-1);
__cfc1(fcsr);
fcsr &= ~_ROUND_MASK;
fcsr |= __round;
__ctc1(fcsr);
return (0);
}
__fenv_static inline int
fegetenv(fenv_t *__envp)
{
__cfc1(*__envp);
return (0);
}
__fenv_static inline int
feholdexcept(fenv_t *__envp)
{
fexcept_t fcsr;
__cfc1(fcsr);
*__envp = fcsr;
fcsr &= ~(FE_ALL_EXCEPT | _ENABLE_MASK);
__ctc1(fcsr);
return (0);
}
__fenv_static inline int
fesetenv(const fenv_t *__envp)
{
__ctc1(*__envp);
return (0);
}
__fenv_static inline int
feupdateenv(const fenv_t *__envp)
{
fexcept_t fcsr;
__cfc1(fcsr);
fesetenv(__envp);
feraiseexcept(fcsr);
return (0);
}
#endif /* !SOFTFLOAT */
#if __BSD_VISIBLE
/* We currently provide no external definitions of the functions below. */
#ifdef SOFTFLOAT
int feenableexcept(int __mask);
int fedisableexcept(int __mask);
int fegetexcept(void);
#else
static inline int
feenableexcept(int __mask)
{
fenv_t __old_fcsr, __new_fcsr;
__cfc1(__old_fcsr);
__new_fcsr = __old_fcsr | (__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT;
__ctc1(__new_fcsr);
return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
}
static inline int
fedisableexcept(int __mask)
{
fenv_t __old_fcsr, __new_fcsr;
__cfc1(__old_fcsr);
__new_fcsr = __old_fcsr & ~((__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT);
__ctc1(__new_fcsr);
return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
}
static inline int
fegetexcept(void)
{
fexcept_t fcsr;
__cfc1(fcsr);
return ((fcsr & _ENABLE_MASK) >> _ENABLE_SHIFT);
}
#endif /* !SOFTFLOAT */
#endif /* __BSD_VISIBLE */
__END_DECLS
#endif /* !_FENV_H_ */

1
mips/Make.files Normal file
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@ -0,0 +1 @@
$(CUR_SRCS) = fenv.c

67
mips/fenv.c Normal file
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@ -0,0 +1,67 @@
/*-
* 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 "openlibm_fenv.h"
#ifdef __GNUC_GNU_INLINE__
#error "This file must be compiled with C99 'inline' semantics"
#endif
/*
* Hopefully the system ID byte is immutable, so it's valid to use
* this as a default environment.
*/
const fenv_t __fe_dfl_env = 0;
#ifdef SOFTFLOAT
#define __set_env(env, flags, mask, rnd) env = ((flags) \
| (mask)<<_FPUSW_SHIFT \
| (rnd) << 24)
#define __env_flags(env) ((env) & FE_ALL_EXCEPT)
#define __env_mask(env) (((env) >> _FPUSW_SHIFT) \
& FE_ALL_EXCEPT)
#define __env_round(env) (((env) >> 24) & _ROUND_MASK)
#include "fenv-softfloat.h"
#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 __round);
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);
extern inline int feenableexcept(int __mask);
extern inline int fedisableexcept(int __mask);
extern inline int fegetexcept(void);

2
src/fpmath.h
View File

@ -39,6 +39,8 @@
#endif
#elif defined(__powerpc__)
#include "powerpc_fpmath.h"
#elif defined(__mips__)
#include "mips_fpmath.h"
#endif
/* Definitions provided directly by GCC and Clang. */

57
src/mips_fpmath.h Normal file
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@ -0,0 +1,57 @@
/*-
* Copyright (c) 2002, 2003 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.
*
* $FreeBSD$
*/
union IEEEl2bits {
long double e;
struct {
#ifndef __MIPSEB__
unsigned int manl :32;
unsigned int manh :20;
unsigned int exp :11;
unsigned int sign :1;
#else
unsigned int sign :1;
unsigned int exp :11;
unsigned int manh :20;
unsigned int manl :32;
#endif
} bits;
};
#define LDBL_NBIT 0
#define mask_nbit_l(u) ((void)0)
#define LDBL_IMPLICIT_NBIT
#define LDBL_MANH_SIZE 20
#define LDBL_MANL_SIZE 32
#define LDBL_TO_ARRAY32(u, a) do { \
(a)[0] = (uint32_t)(u).bits.manl; \
(a)[1] = (uint32_t)(u).bits.manh; \
} while(0)