mirror of git://gcc.gnu.org/git/gcc.git
540 lines
16 KiB
C
540 lines
16 KiB
C
/* Header file for libgcc2.c. */
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/* Copyright (C) 2000-2019 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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#ifndef GCC_LIBGCC2_H
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#define GCC_LIBGCC2_H
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#ifndef HIDE_EXPORTS
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#pragma GCC visibility push(default)
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#endif
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extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);
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extern void __clear_cache (char *, char *);
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extern void __eprintf (const char *, const char *, unsigned int, const char *)
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__attribute__ ((__noreturn__));
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#ifdef __LIBGCC_HAS_HF_MODE__
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#define LIBGCC2_HAS_HF_MODE 1
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#else
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#define LIBGCC2_HAS_HF_MODE 0
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#endif
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#ifdef __LIBGCC_HAS_SF_MODE__
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#define LIBGCC2_HAS_SF_MODE 1
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#else
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#define LIBGCC2_HAS_SF_MODE 0
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#endif
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#ifdef __LIBGCC_HAS_DF_MODE__
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#define LIBGCC2_HAS_DF_MODE 1
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#else
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#define LIBGCC2_HAS_DF_MODE 0
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#endif
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#ifdef __LIBGCC_HAS_XF_MODE__
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#define LIBGCC2_HAS_XF_MODE 1
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#else
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#define LIBGCC2_HAS_XF_MODE 0
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#endif
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#ifdef __LIBGCC_HAS_TF_MODE__
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#define LIBGCC2_HAS_TF_MODE 1
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#else
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#define LIBGCC2_HAS_TF_MODE 0
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#endif
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#ifndef __LIBGCC_SF_MANT_DIG__
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#if LIBGCC2_HAS_SF_MODE
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#error __LIBGCC_SF_MANT_DIG__ not defined
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#else
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#define __LIBGCC_SF_MANT_DIG__ 0
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#endif
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#endif
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#ifndef __LIBGCC_DF_MANT_DIG__
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#if LIBGCC2_HAS_DF_MODE
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#error __LIBGCC_DF_MANT_DIG__ not defined
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#else
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#define __LIBGCC_DF_MANT_DIG__ 0
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#endif
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#endif
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#ifndef __LIBGCC_XF_MANT_DIG__
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#if LIBGCC2_HAS_XF_MODE
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#error __LIBGCC_XF_MANT_DIG__ not defined
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#else
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#define __LIBGCC_XF_MANT_DIG__ 0
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#endif
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#endif
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#ifndef __LIBGCC_TF_MANT_DIG__
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#if LIBGCC2_HAS_TF_MODE
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#error __LIBGCC_TF_MANT_DIG__ not defined
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#else
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#define __LIBGCC_TF_MANT_DIG__ 0
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#endif
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#endif
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/* FIXME: This #ifdef probably should be removed, ie. enable the test
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for mips too. */
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/* Don't use IBM Extended Double TFmode for TI->SF calculations.
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The conversion from long double to float suffers from double
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rounding, because we convert via double. In other cases, going
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through the software fp routines is much slower than the fallback. */
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#ifdef __powerpc__
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#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106)
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#elif defined(WIDEST_HARDWARE_FP_SIZE)
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#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE)
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#else
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#define AVOID_FP_TYPE_CONVERSION(SIZE) 0
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#endif
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/* In the first part of this file, we are interfacing to calls generated
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by the compiler itself. These calls pass values into these routines
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which have very specific modes (rather than very specific types), and
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these compiler-generated calls also expect any return values to have
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very specific modes (rather than very specific types). Thus, we need
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to avoid using regular C language type names in this part of the file
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because the sizes for those types can be configured to be anything.
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Instead we use the following special type names. */
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typedef int QItype __attribute__ ((mode (QI)));
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typedef unsigned int UQItype __attribute__ ((mode (QI)));
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typedef int HItype __attribute__ ((mode (HI)));
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typedef unsigned int UHItype __attribute__ ((mode (HI)));
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#if MIN_UNITS_PER_WORD > 1
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/* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1. */
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typedef int SItype __attribute__ ((mode (SI)));
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typedef unsigned int USItype __attribute__ ((mode (SI)));
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#if __SIZEOF_LONG_LONG__ > 4
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/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2. */
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typedef int DItype __attribute__ ((mode (DI)));
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typedef unsigned int UDItype __attribute__ ((mode (DI)));
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#if MIN_UNITS_PER_WORD > 4
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/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4. */
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typedef int TItype __attribute__ ((mode (TI)));
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typedef unsigned int UTItype __attribute__ ((mode (TI)));
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#endif
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#endif
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#endif
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#if LIBGCC2_HAS_HF_MODE
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typedef float HFtype __attribute__ ((mode (HF)));
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typedef _Complex float HCtype __attribute__ ((mode (HC)));
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#endif
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#if LIBGCC2_HAS_SF_MODE
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typedef float SFtype __attribute__ ((mode (SF)));
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typedef _Complex float SCtype __attribute__ ((mode (SC)));
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#endif
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#if LIBGCC2_HAS_DF_MODE
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typedef float DFtype __attribute__ ((mode (DF)));
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typedef _Complex float DCtype __attribute__ ((mode (DC)));
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#endif
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#if LIBGCC2_HAS_XF_MODE
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typedef float XFtype __attribute__ ((mode (XF)));
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typedef _Complex float XCtype __attribute__ ((mode (XC)));
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#endif
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#if LIBGCC2_HAS_TF_MODE
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typedef float TFtype __attribute__ ((mode (TF)));
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typedef _Complex float TCtype __attribute__ ((mode (TC)));
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#endif
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typedef int cmp_return_type __attribute__((mode (__libgcc_cmp_return__)));
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typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__)));
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/* Make sure that we don't accidentally use any normal C language built-in
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type names in the first part of this file. Instead we want to use *only*
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the type names defined above. The following macro definitions insure
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that if we *do* accidentally use some normal C language built-in type name,
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we will get a syntax error. */
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#define char bogus_type
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#define short bogus_type
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#define int bogus_type
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#define long bogus_type
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#define unsigned bogus_type
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#define float bogus_type
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#define double bogus_type
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/* Versions prior to 3.4.4 were not taking into account the word size for
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the 5 trapping arithmetic functions absv, addv, subv, mulv and negv. As
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a consequence, the si and di variants were always and the only ones emitted.
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To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is
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defined on platforms where it makes sense to still have the si variants
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emitted. As a bonus, their implementation is now correct. Note that the
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same mechanism should have been implemented for the di variants, but it
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turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC
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if it existed. */
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#if LIBGCC2_UNITS_PER_WORD == 8
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#define W_TYPE_SIZE (8 * __CHAR_BIT__)
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#define Wtype DItype
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#define UWtype UDItype
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#define HWtype DItype
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#define UHWtype UDItype
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#define DWtype TItype
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#define UDWtype UTItype
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#ifdef LIBGCC2_GNU_PREFIX
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#define __NW(a,b) __gnu_ ## a ## di ## b
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#define __NDW(a,b) __gnu_ ## a ## ti ## b
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#else
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#define __NW(a,b) __ ## a ## di ## b
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#define __NDW(a,b) __ ## a ## ti ## b
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#endif
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#define COMPAT_SIMODE_TRAPPING_ARITHMETIC
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#elif LIBGCC2_UNITS_PER_WORD == 4
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#define W_TYPE_SIZE (4 * __CHAR_BIT__)
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#define Wtype SItype
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#define UWtype USItype
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#define HWtype SItype
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#define UHWtype USItype
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#define DWtype DItype
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#define UDWtype UDItype
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#ifdef LIBGCC2_GNU_PREFIX
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#define __NW(a,b) __gnu_ ## a ## si ## b
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#define __NDW(a,b) __gnu_ ## a ## di ## b
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#else
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#define __NW(a,b) __ ## a ## si ## b
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#define __NDW(a,b) __ ## a ## di ## b
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#endif
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#elif LIBGCC2_UNITS_PER_WORD == 2
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#define W_TYPE_SIZE (2 * __CHAR_BIT__)
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#define Wtype HItype
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#define UWtype UHItype
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#define HWtype HItype
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#define UHWtype UHItype
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#define DWtype SItype
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#define UDWtype USItype
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#ifdef LIBGCC2_GNU_PREFIX
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#define __NW(a,b) __gnu_ ## a ## hi ## b
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#define __NDW(a,b) __gnu_ ## a ## si ## b
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#else
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#define __NW(a,b) __ ## a ## hi ## b
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#define __NDW(a,b) __ ## a ## si ## b
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#endif
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#else
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#define W_TYPE_SIZE __CHAR_BIT__
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#define Wtype QItype
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#define UWtype UQItype
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#define HWtype QItype
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#define UHWtype UQItype
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#define DWtype HItype
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#define UDWtype UHItype
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#ifdef LIBGCC2_GNU_PREFIX
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#define __NW(a,b) __gnu_ ## a ## qi ## b
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#define __NDW(a,b) __gnu_ ## a ## hi ## b
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#else
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#define __NW(a,b) __ ## a ## qi ## b
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#define __NDW(a,b) __ ## a ## hi ## b
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#endif
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#endif
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#ifdef LIBGCC2_GNU_PREFIX
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#define __N(a) __gnu_ ## a
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#else
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#define __N(a) __ ## a
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#endif
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#define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))
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#define Wtype_MIN (- Wtype_MAX - 1)
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#if W_TYPE_SIZE == 8
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# define Wtype_MAXp1_F 0x1p8f
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#elif W_TYPE_SIZE == 16
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# define Wtype_MAXp1_F 0x1p16f
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#elif W_TYPE_SIZE == 32
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# define Wtype_MAXp1_F 0x1p32f
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#elif W_TYPE_SIZE == 64
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# define Wtype_MAXp1_F 0x1p64f
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#else
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# error "expand the table"
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#endif
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#define __muldi3 __NDW(mul,3)
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#define __divdi3 __NDW(div,3)
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#define __udivdi3 __NDW(udiv,3)
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#define __moddi3 __NDW(mod,3)
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#define __umoddi3 __NDW(umod,3)
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#define __negdi2 __NDW(neg,2)
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#define __lshrdi3 __NDW(lshr,3)
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#define __ashldi3 __NDW(ashl,3)
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#define __ashrdi3 __NDW(ashr,3)
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#define __cmpdi2 __NDW(cmp,2)
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#define __ucmpdi2 __NDW(ucmp,2)
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#define __divmoddi4 __NDW(divmod,4)
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#define __udivmoddi4 __NDW(udivmod,4)
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#define __fixunstfDI __NDW(fixunstf,)
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#define __fixtfdi __NDW(fixtf,)
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#define __fixunsxfDI __NDW(fixunsxf,)
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#define __fixxfdi __NDW(fixxf,)
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#define __fixunsdfDI __NDW(fixunsdf,)
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#define __fixdfdi __NDW(fixdf,)
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#define __fixunssfDI __NDW(fixunssf,)
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#define __fixsfdi __NDW(fixsf,)
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#define __floatdixf __NDW(float,xf)
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#define __floatditf __NDW(float,tf)
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#define __floatdidf __NDW(float,df)
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#define __floatdisf __NDW(float,sf)
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#define __floatundixf __NDW(floatun,xf)
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#define __floatunditf __NDW(floatun,tf)
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#define __floatundidf __NDW(floatun,df)
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#define __floatundisf __NDW(floatun,sf)
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#define __fixunsxfSI __NW(fixunsxf,)
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#define __fixunstfSI __NW(fixunstf,)
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#define __fixunsdfSI __NW(fixunsdf,)
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#define __fixunssfSI __NW(fixunssf,)
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#define __absvSI2 __NW(absv,2)
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#define __addvSI3 __NW(addv,3)
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#define __subvSI3 __NW(subv,3)
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#define __mulvSI3 __NW(mulv,3)
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#define __negvSI2 __NW(negv,2)
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#define __absvDI2 __NDW(absv,2)
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#define __addvDI3 __NDW(addv,3)
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#define __subvDI3 __NDW(subv,3)
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#define __mulvDI3 __NDW(mulv,3)
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#define __negvDI2 __NDW(negv,2)
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#define __ffsSI2 __NW(ffs,2)
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#define __clzSI2 __NW(clz,2)
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#define __ctzSI2 __NW(ctz,2)
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#define __clrsbSI2 __NW(clrsb,2)
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#define __popcountSI2 __NW(popcount,2)
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#define __paritySI2 __NW(parity,2)
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#define __ffsDI2 __NDW(ffs,2)
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#define __clzDI2 __NDW(clz,2)
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#define __ctzDI2 __NDW(ctz,2)
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#define __clrsbDI2 __NDW(clrsb,2)
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#define __popcountDI2 __NDW(popcount,2)
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#define __parityDI2 __NDW(parity,2)
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#define __clz_tab __N(clz_tab)
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#define __bswapsi2 __N(bswapsi2)
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#define __bswapdi2 __N(bswapdi2)
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#define __udiv_w_sdiv __N(udiv_w_sdiv)
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#define __clear_cache __N(clear_cache)
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#define __enable_execute_stack __N(enable_execute_stack)
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#ifndef __powisf2
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#define __powisf2 __N(powisf2)
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#endif
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#ifndef __powidf2
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#define __powidf2 __N(powidf2)
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#endif
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#ifndef __powitf2
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#define __powitf2 __N(powitf2)
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#endif
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#ifndef __powixf2
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#define __powixf2 __N(powixf2)
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#endif
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#ifndef __mulsc3
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#define __mulsc3 __N(mulsc3)
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#endif
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#ifndef __muldc3
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#define __muldc3 __N(muldc3)
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#endif
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#ifndef __mulxc3
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#define __mulxc3 __N(mulxc3)
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#endif
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#ifndef __multc3
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#define __multc3 __N(multc3)
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#endif
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#ifndef __divsc3
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#define __divsc3 __N(divsc3)
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#endif
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#ifndef __divdc3
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#define __divdc3 __N(divdc3)
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#endif
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#ifndef __divxc3
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#define __divxc3 __N(divxc3)
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#endif
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#ifndef __divtc3
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#define __divtc3 __N(divtc3)
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#endif
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extern DWtype __muldi3 (DWtype, DWtype);
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extern DWtype __divdi3 (DWtype, DWtype);
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extern UDWtype __udivdi3 (UDWtype, UDWtype);
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extern UDWtype __umoddi3 (UDWtype, UDWtype);
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extern DWtype __moddi3 (DWtype, DWtype);
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extern DWtype __divmoddi4 (DWtype, DWtype, DWtype *);
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/* __udivmoddi4 is static inline when building other libgcc2 portions. */
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#if (!defined (L_udivdi3) && !defined (L_divdi3) && \
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!defined (L_umoddi3) && !defined (L_moddi3) && \
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!defined (L_divmoddi4))
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extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *);
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#endif
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/* __negdi2 is static inline when building other libgcc2 portions. */
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#if !defined(L_divdi3) && !defined(L_moddi3)
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extern DWtype __negdi2 (DWtype);
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#endif
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extern DWtype __lshrdi3 (DWtype, shift_count_type);
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extern DWtype __ashldi3 (DWtype, shift_count_type);
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extern DWtype __ashrdi3 (DWtype, shift_count_type);
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/* __udiv_w_sdiv is static inline when building other libgcc2 portions. */
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#if (!defined(L_udivdi3) && !defined(L_divdi3) && \
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!defined(L_umoddi3) && !defined(L_moddi3))
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extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);
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#endif
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extern cmp_return_type __cmpdi2 (DWtype, DWtype);
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extern cmp_return_type __ucmpdi2 (DWtype, DWtype);
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#if MIN_UNITS_PER_WORD > 1
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extern SItype __bswapsi2 (SItype);
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#endif
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#if __SIZEOF_LONG_LONG__ > 4
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extern DItype __bswapdi2 (DItype);
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#endif
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extern Wtype __absvSI2 (Wtype);
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extern Wtype __addvSI3 (Wtype, Wtype);
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extern Wtype __subvSI3 (Wtype, Wtype);
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extern Wtype __mulvSI3 (Wtype, Wtype);
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extern Wtype __negvSI2 (Wtype);
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extern DWtype __absvDI2 (DWtype);
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extern DWtype __addvDI3 (DWtype, DWtype);
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extern DWtype __subvDI3 (DWtype, DWtype);
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extern DWtype __mulvDI3 (DWtype, DWtype);
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extern DWtype __negvDI2 (DWtype);
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#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC
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#define __absvsi2 __N(absvsi2)
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#define __negvsi2 __N(negvsi2)
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#define __addvsi3 __N(addvsi3)
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#define __subvsi3 __N(subvsi3)
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#define __mulvsi3 __N(mulvsi3)
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extern SItype __absvsi2 (SItype);
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extern SItype __addvsi3 (SItype, SItype);
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extern SItype __subvsi3 (SItype, SItype);
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extern SItype __mulvsi3 (SItype, SItype);
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extern SItype __negvsi2 (SItype);
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#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */
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#undef int
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#if LIBGCC2_HAS_HF_MODE
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extern HCtype __divhc3 (HFtype, HFtype, HFtype, HFtype);
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extern HCtype __mulhc3 (HFtype, HFtype, HFtype, HFtype);
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#endif
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#if LIBGCC2_HAS_SF_MODE
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extern DWtype __fixsfdi (SFtype);
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extern SFtype __floatdisf (DWtype);
|
|
extern SFtype __floatundisf (UDWtype);
|
|
extern UWtype __fixunssfSI (SFtype);
|
|
extern UDWtype __fixunssfDI (SFtype);
|
|
extern SFtype __powisf2 (SFtype, int);
|
|
extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);
|
|
extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);
|
|
#endif
|
|
#if LIBGCC2_HAS_DF_MODE
|
|
extern DWtype __fixdfdi (DFtype);
|
|
extern DFtype __floatdidf (DWtype);
|
|
extern DFtype __floatundidf (UDWtype);
|
|
extern UWtype __fixunsdfSI (DFtype);
|
|
extern UDWtype __fixunsdfDI (DFtype);
|
|
extern DFtype __powidf2 (DFtype, int);
|
|
extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);
|
|
extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);
|
|
#endif
|
|
|
|
#if LIBGCC2_HAS_XF_MODE
|
|
extern DWtype __fixxfdi (XFtype);
|
|
extern UDWtype __fixunsxfDI (XFtype);
|
|
extern XFtype __floatdixf (DWtype);
|
|
extern XFtype __floatundixf (UDWtype);
|
|
extern UWtype __fixunsxfSI (XFtype);
|
|
extern XFtype __powixf2 (XFtype, int);
|
|
extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);
|
|
extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype);
|
|
#endif
|
|
|
|
#if LIBGCC2_HAS_TF_MODE
|
|
extern UDWtype __fixunstfDI (TFtype);
|
|
extern DWtype __fixtfdi (TFtype);
|
|
extern TFtype __floatditf (DWtype);
|
|
extern TFtype __floatunditf (UDWtype);
|
|
extern TFtype __powitf2 (TFtype, int);
|
|
extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype);
|
|
extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype);
|
|
#endif
|
|
#define int bogus_type
|
|
|
|
/* DWstructs are pairs of Wtype values in the order determined by
|
|
__BYTE_ORDER__. */
|
|
|
|
#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
|
|
struct DWstruct {Wtype high, low;};
|
|
#else
|
|
struct DWstruct {Wtype low, high;};
|
|
#endif
|
|
|
|
/* We need this union to unpack/pack DImode values, since we don't have
|
|
any arithmetic yet. Incoming DImode parameters are stored into the
|
|
`ll' field, and the unpacked result is read from the struct `s'. */
|
|
|
|
typedef union
|
|
{
|
|
struct DWstruct s;
|
|
DWtype ll;
|
|
} DWunion;
|
|
|
|
/* Defined for L_popcount_tab. Exported here because some targets may
|
|
want to use it for their own versions of the __popcount builtins. */
|
|
extern const UQItype __popcount_tab[256];
|
|
|
|
/* Defined for L_clz. Exported here because some targets may want to use
|
|
it for their own versions of the __clz builtins. It contains the bit
|
|
position of the first set bit for the numbers 0 - 255. This avoids the
|
|
need for a separate table for the __ctz builtins. */
|
|
extern const UQItype __clz_tab[256];
|
|
|
|
#include "longlong.h"
|
|
|
|
#undef int
|
|
extern int __clzDI2 (UDWtype);
|
|
extern int __clzSI2 (UWtype);
|
|
extern int __ctzSI2 (UWtype);
|
|
extern int __ctzDI2 (UDWtype);
|
|
extern int __clrsbSI2 (Wtype);
|
|
extern int __clrsbDI2 (DWtype);
|
|
extern int __ffsSI2 (UWtype);
|
|
extern int __ffsDI2 (DWtype);
|
|
extern int __popcountSI2 (UWtype);
|
|
extern int __popcountDI2 (UDWtype);
|
|
extern int __paritySI2 (UWtype);
|
|
extern int __parityDI2 (UDWtype);
|
|
#define int bogus_type
|
|
|
|
extern void __enable_execute_stack (void *);
|
|
|
|
#ifndef HIDE_EXPORTS
|
|
#pragma GCC visibility pop
|
|
#endif
|
|
|
|
#endif /* ! GCC_LIBGCC2_H */
|