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/* Machine description for AArch64 architecture.
Copyright (C) 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
Contributed by ARM Ltd.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#define _FP_W_TYPE_SIZE 64
#define _FP_W_TYPE unsigned long
#define _FP_WS_TYPE signed long
#define _FP_I_TYPE int
typedef int TItype __attribute__ ((mode (TI)));
typedef unsigned int UTItype __attribute__ ((mode (TI)));
#define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype))
/* The type of the result of a floating point comparison. This must
match __libgcc_cmp_return__ in GCC for the target. */
typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
#define CMPtype __gcc_CMPtype
#define _FP_MUL_MEAT_Q(R,X,Y) \
_FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1)
#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1)
#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
/* This appears to be in line with the VFP conventions in the v7-a
ARM-ARM. Need to check with the v8 version. */
#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
do { \
if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \
&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \
{ \
R##_s = Y##_s; \
_FP_FRAC_COPY_##wc(R,Y); \
} \
else \
{ \
R##_s = X##_s; \
_FP_FRAC_COPY_##wc(R,X); \
} \
R##_c = FP_CLS_NAN; \
} while (0)
#define FP_EX_INVALID 0x01
#define FP_EX_DIVZERO 0x02
#define FP_EX_OVERFLOW 0x04
#define FP_EX_UNDERFLOW 0x08
#define FP_EX_INEXACT 0x10
#define FP_HANDLE_EXCEPTIONS \
do { \
const float fp_max = __FLT_MAX__; \
const float fp_min = __FLT_MIN__; \
const float fp_1e32 = 1.0e32f; \
const float fp_zero = 0.0; \
const float fp_one = 1.0; \
unsigned fpsr; \
if (_fex & FP_EX_INVALID) \
{ \
__asm__ __volatile__ ("fdiv\ts0, %s0, %s0" \
: \
: "w" (fp_zero) \
: "s0"); \
__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \
} \
if (_fex & FP_EX_DIVZERO) \
{ \
__asm__ __volatile__ ("fdiv\ts0, %s0, %s1" \
: \
: "w" (fp_one), "w" (fp_zero) \
: "s0"); \
__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \
} \
if (_fex & FP_EX_OVERFLOW) \
{ \
__asm__ __volatile__ ("fadd\ts0, %s0, %s1" \
: \
: "w" (fp_max), "w" (fp_1e32) \
: "s0"); \
__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \
} \
if (_fex & FP_EX_UNDERFLOW) \
{ \
__asm__ __volatile__ ("fmul\ts0, %s0, %s0" \
: \
: "w" (fp_min) \
: "s0"); \
__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \
} \
if (_fex & FP_EX_INEXACT) \
{ \
__asm__ __volatile__ ("fsub\ts0, %s0, %s1" \
: \
: "w" (fp_max), "w" (fp_one) \
: "s0"); \
__asm__ __volatile__ ("mrs\t%0, fpsr" : "=r" (fpsr)); \
} \
} while (0)
#define FP_RND_NEAREST 0
#define FP_RND_ZERO 0xc00000
#define FP_RND_PINF 0x400000
#define FP_RND_MINF 0x800000
#define _FP_DECL_EX \
unsigned long int _fpcr __attribute__ ((unused)) = FP_RND_NEAREST
#define FP_INIT_ROUNDMODE \
do { \
__asm__ __volatile__ ("mrs %0, fpcr" \
: "=r" (_fpcr)); \
} while (0)
#define FP_ROUNDMODE (_fpcr & 0xc00000)
#define __LITTLE_ENDIAN 1234
#define __BIG_ENDIAN 4321
#if defined __AARCH64EB__
# define __BYTE_ORDER __BIG_ENDIAN
#else
# define __BYTE_ORDER __LITTLE_ENDIAN
#endif
/* Define ALIASNAME as a strong alias for NAME. */
# define strong_alias(name, aliasname) _strong_alias(name, aliasname)
# define _strong_alias(name, aliasname) \
extern __typeof (name) aliasname __attribute__ ((alias (#name)));
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