118 lines
3.5 KiB
C
118 lines
3.5 KiB
C
/* Machine description for AArch64 architecture.
|
|
Copyright (C) 2009-2013 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_EX_SHIFT 8
|
|
#define FP_EX_ALL \
|
|
(FP_EX_INVALID | FP_EX_DIVZERO | FP_EX_OVERFLOW | FP_EX_UNDERFLOW \
|
|
| FP_EX_INEXACT)
|
|
|
|
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)));
|