blob: be9b42174c42a227b4457af6ba52262602bb65ce [file] [log] [blame]
/* Machine description for AArch64 architecture.
Copyright (C) 2009-2022 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.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#define _FP_W_TYPE_SIZE 64
#define _FP_W_TYPE unsigned long long
#define _FP_WS_TYPE signed long long
#define _FP_I_TYPE long long
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_H ((_FP_QNANBIT_H << 1) - 1)
#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_H 0
#define _FP_NANSIGN_S 0
#define _FP_NANSIGN_D 0
#define _FP_NANSIGN_Q 0
#define _FP_KEEPNANFRACP 1
#define _FP_QNANNEGATEDP 0
/* 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_EX_SHIFT 8
#define FP_EX_ALL \
(FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \
| FP_EX_INEXACT)
#define _FP_TININESS_AFTER_ROUNDING 0
void __sfp_handle_exceptions (int);
#define FP_HANDLE_EXCEPTIONS \
do { \
if (__builtin_expect (_fex, 0)) \
__sfp_handle_exceptions (_fex); \
} while (0)
#define FP_TRAPPING_EXCEPTIONS ((_fpcr >> FP_EX_SHIFT) & FP_EX_ALL)
#define FP_RND_NEAREST 0x000000
#define FP_RND_PINF 0x400000
#define FP_RND_MINF 0x800000
#define FP_RND_ZERO 0xc00000
#define FP_RND_MASK 0xc00000
#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 & FP_RND_MASK)
#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)));