Add ifdefs in the assembler for soft-float compile case. Submitted by: Hiroki Mori Reviewed by: ray@ Differential Review: https://reviews.freebsd.org/D22352
132 lines
4.2 KiB
C
132 lines
4.2 KiB
C
/*
|
|
* Copyright (C) 2013 Andrew Turner
|
|
* 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 AEABI_VFP_H
|
|
#define AEABI_VFP_H
|
|
|
|
#include <machine/acle-compat.h>
|
|
|
|
/*
|
|
* ASM helper macros. These allow the functions to be changed depending on
|
|
* the endian-ness we are building for.
|
|
*/
|
|
|
|
/* Allow the name of the function to be changed depending on the ABI */
|
|
#ifndef __ARM_PCS_VFP
|
|
#define AEABI_ENTRY(x) ENTRY(__aeabi_ ## x ## _vfp)
|
|
#define AEABI_END(x) END(__aeabi_ ## x ## _vfp)
|
|
#else
|
|
#define AEABI_ENTRY(x) ENTRY(__aeabi_ ## x)
|
|
#define AEABI_END(x) END(__aeabi_ ## x)
|
|
#endif
|
|
|
|
/*
|
|
* These should be used when a function either takes, or returns a floating
|
|
* point falue. They will load the data from an ARM to a VFP register(s),
|
|
* or from a VFP to an ARM register
|
|
*/
|
|
#ifdef __ARM_BIG_ENDIAN
|
|
#define LOAD_DREG(vreg, reg0, reg1) vmov vreg, reg1, reg0
|
|
#define UNLOAD_DREG(reg0, reg1, vreg) vmov reg1, reg0, vreg
|
|
#else
|
|
#define LOAD_DREG(vreg, reg0, reg1) vmov vreg, reg0, reg1
|
|
#define UNLOAD_DREG(reg0, reg1, vreg) vmov reg0, reg1, vreg
|
|
#endif
|
|
|
|
#define LOAD_SREGS(vreg0, vreg1, reg0, reg1) vmov vreg0, vreg1, reg0, reg1
|
|
#define LOAD_SREG(vreg, reg) vmov vreg, reg
|
|
#define UNLOAD_SREG(reg, vreg) vmov reg, vreg
|
|
|
|
/*
|
|
* C Helper macros
|
|
*/
|
|
|
|
#if __ARM_ARCH >= 6 && !defined(SOFTFLOAT_FOR_GCC)
|
|
/*
|
|
* Generate a function that will either call into the VFP implementation,
|
|
* or the soft float version for a given __aeabi_* helper. The function
|
|
* will take a single argument of the type given by in_type.
|
|
*/
|
|
#define AEABI_FUNC(name, in_type, soft_func) \
|
|
__aeabi_ ## name(in_type a) \
|
|
{ \
|
|
if (_libc_arm_fpu_present) \
|
|
return __aeabi_ ## name ## _vfp(a); \
|
|
else \
|
|
return soft_func (a); \
|
|
}
|
|
|
|
/* As above, but takes two arguments of the same type */
|
|
#define AEABI_FUNC2(name, in_type, soft_func) \
|
|
__aeabi_ ## name(in_type a, in_type b) \
|
|
{ \
|
|
if (_libc_arm_fpu_present) \
|
|
return __aeabi_ ## name ## _vfp(a, b); \
|
|
else \
|
|
return soft_func (a, b); \
|
|
}
|
|
|
|
/* As above, but with the soft float arguments reversed */
|
|
#define AEABI_FUNC2_REV(name, in_type, soft_func) \
|
|
__aeabi_ ## name(in_type a, in_type b) \
|
|
{ \
|
|
if (_libc_arm_fpu_present) \
|
|
return __aeabi_ ## name ## _vfp(a, b); \
|
|
else \
|
|
return soft_func (b, a); \
|
|
}
|
|
#else
|
|
/*
|
|
* Helper macros for when we are only able to use the softfloat
|
|
* version of these functions, i.e. on arm before armv6.
|
|
*/
|
|
#define AEABI_FUNC(name, in_type, soft_func) \
|
|
__aeabi_ ## name(in_type a) \
|
|
{ \
|
|
return soft_func (a); \
|
|
}
|
|
|
|
/* As above, but takes two arguments of the same type */
|
|
#define AEABI_FUNC2(name, in_type, soft_func) \
|
|
__aeabi_ ## name(in_type a, in_type b) \
|
|
{ \
|
|
return soft_func (a, b); \
|
|
}
|
|
|
|
/* As above, but with the soft float arguments reversed */
|
|
#define AEABI_FUNC2_REV(name, in_type, soft_func) \
|
|
__aeabi_ ## name(in_type a, in_type b) \
|
|
{ \
|
|
return soft_func (b, a); \
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|