227 lines
6.5 KiB
C
227 lines
6.5 KiB
C
/* Copyright (C) 2013-2018 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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/* This file supplies implementations for some AVR-specific builtin
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functions so that code like the following works as expected:
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int (*f (void))(_Fract)
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{
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return __builtin_avr_countlsr;
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}
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In this specific case, the generated code is:
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f:
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ldi r24,lo8(gs(__countlsHI))
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ldi r25,hi8(gs(__countlsHI))
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ret
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*/
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/* Map fixed-point suffix to the corresponding fixed-point type. */
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typedef short _Fract fx_hr_t;
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typedef _Fract fx_r_t;
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typedef long _Fract fx_lr_t;
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typedef long long _Fract fx_llr_t;
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typedef unsigned short _Fract fx_uhr_t;
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typedef unsigned _Fract fx_ur_t;
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typedef unsigned long _Fract fx_ulr_t;
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typedef unsigned long long _Fract fx_ullr_t;
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typedef short _Accum fx_hk_t;
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typedef _Accum fx_k_t;
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typedef long _Accum fx_lk_t;
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typedef long long _Accum fx_llk_t;
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typedef unsigned short _Accum fx_uhk_t;
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typedef unsigned _Accum fx_uk_t;
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typedef unsigned long _Accum fx_ulk_t;
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typedef unsigned long long _Accum fx_ullk_t;
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/* Map fixed-point suffix to the corresponding natural integer type. */
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typedef char int_hr_t;
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typedef int int_r_t;
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typedef long int_lr_t;
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typedef long long int_llr_t;
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typedef unsigned char int_uhr_t;
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typedef unsigned int int_ur_t;
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typedef unsigned long int_ulr_t;
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typedef unsigned long long int_ullr_t;
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typedef int int_hk_t;
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typedef long int_k_t;
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typedef long long int_lk_t;
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typedef long long int_llk_t;
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typedef unsigned int int_uhk_t;
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typedef unsigned long int_uk_t;
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typedef unsigned long long int_ulk_t;
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typedef unsigned long long int_ullk_t;
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/* Map mode to the corresponding integer type. */
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typedef char int_qi_t;
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typedef int int_hi_t;
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typedef long int_si_t;
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typedef long long int_di_t;
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typedef unsigned char uint_qi_t;
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typedef unsigned int uint_hi_t;
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typedef unsigned long uint_si_t;
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typedef unsigned long long uint_di_t;
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/************************************************************************/
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/* Supply implementations / symbols for __builtin_roundFX ASM_NAME. */
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#ifdef L_round
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#define ROUND1(FX) \
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ROUND2 (FX)
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#define ROUND2(FX) \
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extern fx_## FX ##_t __round## FX (fx_## FX ##_t x, int rpoint); \
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\
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fx_## FX ##_t \
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__round## FX (fx_## FX ##_t x, int rpoint) \
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{ \
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return __builtin_avr_round ##FX (x, rpoint); \
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}
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ROUND1(L_LABEL)
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#endif /* L_round */
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/*********************************************************************/
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/* Implement some count-leading-redundant-sign-bits to be used with
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coundlsFX implementation. */
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#ifdef L__clrsbqi
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extern int __clrsbqi2 (char x);
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int
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__clrsbqi2 (char x)
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{
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int ret;
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if (x < 0)
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x = ~x;
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if (x == 0)
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return 8 * sizeof (x) -1;
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ret = __builtin_clz (x << 8);
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return ret - 1;
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}
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#endif /* L__clrsbqi */
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#ifdef L__clrsbdi
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extern int __clrsbdi2 (long long x);
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int
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__clrsbdi2 (long long x)
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{
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int ret;
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if (x < 0LL)
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x = ~x;
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if (x == 0LL)
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return 8 * sizeof (x) -1;
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ret = __builtin_clzll ((unsigned long long) x);
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return ret - 1;
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}
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#endif /* L__clrsbdi */
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/*********************************************************************/
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/* Supply implementations / symbols for __builtin_avr_countlsFX. */
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/* Signed */
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#ifdef L_countls
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#define COUNTLS1(MM) \
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COUNTLS2 (MM)
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#define COUNTLS2(MM) \
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extern int __countls## MM ##2 (int_## MM ##_t); \
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extern int __clrsb## MM ##2 (int_## MM ##_t); \
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\
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int \
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__countls## MM ##2 (int_## MM ##_t x) \
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{ \
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if (x == 0) \
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return __INT8_MAX__; \
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\
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return __clrsb## MM ##2 (x); \
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}
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COUNTLS1(L_LABEL)
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#endif /* L_countls */
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/* Unsigned */
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#ifdef L_countlsu
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#define clz_qi2 __builtin_clz /* unused, avoid warning */
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#define clz_hi2 __builtin_clz
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#define clz_si2 __builtin_clzl
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#define clz_di2 __builtin_clzll
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#define COUNTLS1(MM) \
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COUNTLS2 (MM)
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#define COUNTLS2(MM) \
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extern int __countlsu## MM ##2 (uint_## MM ##_t); \
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\
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int \
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__countlsu## MM ##2 (uint_## MM ##_t x) \
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{ \
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if (x == 0) \
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return __INT8_MAX__; \
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\
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if (sizeof (x) == 1) \
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return clz_hi2 (x << 8); \
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else \
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return clz_## MM ##2 (x); \
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}
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COUNTLS1(L_LABEL)
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#endif /* L_countlsu */
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