227 lines
6.5 KiB
C
227 lines
6.5 KiB
C
/* Copyright (C) 2013-2016 Free Software Foundation, Inc.
|
||
|
||
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/>. */
|
||
|
||
|
||
/* This file supplies implementations for some AVR-specific builtin
|
||
functions so that code like the following works as expected:
|
||
|
||
int (*f (void))(_Fract)
|
||
{
|
||
return __builtin_avr_countlsr;
|
||
}
|
||
|
||
In this specific case, the generated code is:
|
||
|
||
f:
|
||
ldi r24,lo8(gs(__countlsHI))
|
||
ldi r25,hi8(gs(__countlsHI))
|
||
ret
|
||
*/
|
||
|
||
/* Map fixed-point suffix to the corresponding fixed-point type. */
|
||
|
||
typedef short _Fract fx_hr_t;
|
||
typedef _Fract fx_r_t;
|
||
typedef long _Fract fx_lr_t;
|
||
typedef long long _Fract fx_llr_t;
|
||
|
||
typedef unsigned short _Fract fx_uhr_t;
|
||
typedef unsigned _Fract fx_ur_t;
|
||
typedef unsigned long _Fract fx_ulr_t;
|
||
typedef unsigned long long _Fract fx_ullr_t;
|
||
|
||
typedef short _Accum fx_hk_t;
|
||
typedef _Accum fx_k_t;
|
||
typedef long _Accum fx_lk_t;
|
||
typedef long long _Accum fx_llk_t;
|
||
|
||
typedef unsigned short _Accum fx_uhk_t;
|
||
typedef unsigned _Accum fx_uk_t;
|
||
typedef unsigned long _Accum fx_ulk_t;
|
||
typedef unsigned long long _Accum fx_ullk_t;
|
||
|
||
/* Map fixed-point suffix to the corresponding natural integer type. */
|
||
|
||
typedef char int_hr_t;
|
||
typedef int int_r_t;
|
||
typedef long int_lr_t;
|
||
typedef long long int_llr_t;
|
||
|
||
typedef unsigned char int_uhr_t;
|
||
typedef unsigned int int_ur_t;
|
||
typedef unsigned long int_ulr_t;
|
||
typedef unsigned long long int_ullr_t;
|
||
|
||
typedef int int_hk_t;
|
||
typedef long int_k_t;
|
||
typedef long long int_lk_t;
|
||
typedef long long int_llk_t;
|
||
|
||
typedef unsigned int int_uhk_t;
|
||
typedef unsigned long int_uk_t;
|
||
typedef unsigned long long int_ulk_t;
|
||
typedef unsigned long long int_ullk_t;
|
||
|
||
/* Map mode to the corresponding integer type. */
|
||
|
||
typedef char int_qi_t;
|
||
typedef int int_hi_t;
|
||
typedef long int_si_t;
|
||
typedef long long int_di_t;
|
||
|
||
typedef unsigned char uint_qi_t;
|
||
typedef unsigned int uint_hi_t;
|
||
typedef unsigned long uint_si_t;
|
||
typedef unsigned long long uint_di_t;
|
||
|
||
|
||
|
||
/************************************************************************/
|
||
|
||
/* Supply implementations / symbols for __builtin_roundFX ASM_NAME. */
|
||
|
||
#ifdef L_round
|
||
|
||
#define ROUND1(FX) \
|
||
ROUND2 (FX)
|
||
|
||
#define ROUND2(FX) \
|
||
extern fx_## FX ##_t __round## FX (fx_## FX ##_t x, int rpoint); \
|
||
\
|
||
fx_## FX ##_t \
|
||
__round## FX (fx_## FX ##_t x, int rpoint) \
|
||
{ \
|
||
return __builtin_avr_round ##FX (x, rpoint); \
|
||
}
|
||
|
||
ROUND1(L_LABEL)
|
||
|
||
#endif /* L_round */
|
||
|
||
|
||
|
||
/*********************************************************************/
|
||
|
||
/* Implement some count-leading-redundant-sign-bits to be used with
|
||
coundlsFX implementation. */
|
||
|
||
#ifdef L__clrsbqi
|
||
extern int __clrsbqi2 (char x);
|
||
|
||
int
|
||
__clrsbqi2 (char x)
|
||
{
|
||
int ret;
|
||
|
||
if (x < 0)
|
||
x = ~x;
|
||
|
||
if (x == 0)
|
||
return 8 * sizeof (x) -1;
|
||
|
||
ret = __builtin_clz (x << 8);
|
||
return ret - 1;
|
||
}
|
||
#endif /* L__clrsbqi */
|
||
|
||
|
||
#ifdef L__clrsbdi
|
||
extern int __clrsbdi2 (long long x);
|
||
|
||
int
|
||
__clrsbdi2 (long long x)
|
||
{
|
||
int ret;
|
||
|
||
if (x < 0LL)
|
||
x = ~x;
|
||
|
||
if (x == 0LL)
|
||
return 8 * sizeof (x) -1;
|
||
|
||
ret = __builtin_clzll ((unsigned long long) x);
|
||
return ret - 1;
|
||
}
|
||
#endif /* L__clrsbdi */
|
||
|
||
|
||
|
||
/*********************************************************************/
|
||
|
||
/* Supply implementations / symbols for __builtin_avr_countlsFX. */
|
||
|
||
/* Signed */
|
||
|
||
#ifdef L_countls
|
||
|
||
#define COUNTLS1(MM) \
|
||
COUNTLS2 (MM)
|
||
|
||
#define COUNTLS2(MM) \
|
||
extern int __countls## MM ##2 (int_## MM ##_t); \
|
||
extern int __clrsb## MM ##2 (int_## MM ##_t); \
|
||
\
|
||
int \
|
||
__countls## MM ##2 (int_## MM ##_t x) \
|
||
{ \
|
||
if (x == 0) \
|
||
return __INT8_MAX__; \
|
||
\
|
||
return __clrsb## MM ##2 (x); \
|
||
}
|
||
|
||
COUNTLS1(L_LABEL)
|
||
|
||
#endif /* L_countls */
|
||
|
||
/* Unsigned */
|
||
|
||
#ifdef L_countlsu
|
||
|
||
#define clz_qi2 __builtin_clz /* unused, avoid warning */
|
||
#define clz_hi2 __builtin_clz
|
||
#define clz_si2 __builtin_clzl
|
||
#define clz_di2 __builtin_clzll
|
||
|
||
#define COUNTLS1(MM) \
|
||
COUNTLS2 (MM)
|
||
|
||
#define COUNTLS2(MM) \
|
||
extern int __countlsu## MM ##2 (uint_## MM ##_t); \
|
||
\
|
||
int \
|
||
__countlsu## MM ##2 (uint_## MM ##_t x) \
|
||
{ \
|
||
if (x == 0) \
|
||
return __INT8_MAX__; \
|
||
\
|
||
if (sizeof (x) == 1) \
|
||
return clz_hi2 (x << 8); \
|
||
else \
|
||
return clz_## MM ##2 (x); \
|
||
}
|
||
|
||
COUNTLS1(L_LABEL)
|
||
|
||
#endif /* L_countlsu */
|