diff options
Diffstat (limited to 'libgcc/soft-fp/soft-fp.h')
| -rw-r--r-- | libgcc/soft-fp/soft-fp.h | 199 |
1 files changed, 118 insertions, 81 deletions
diff --git a/libgcc/soft-fp/soft-fp.h b/libgcc/soft-fp/soft-fp.h index b1c6e619b5e..696fc8676c7 100644 --- a/libgcc/soft-fp/soft-fp.h +++ b/libgcc/soft-fp/soft-fp.h @@ -33,25 +33,25 @@ #define SOFT_FP_H #ifdef _LIBC -#include <sfp-machine.h> +# include <sfp-machine.h> #else -#include "sfp-machine.h" +# include "sfp-machine.h" #endif /* Allow sfp-machine to have its own byte order definitions. */ #ifndef __BYTE_ORDER -#ifdef _LIBC -#include <endian.h> -#else -#error "endianness not defined by sfp-machine.h" -#endif +# ifdef _LIBC +# include <endian.h> +# else +# error "endianness not defined by sfp-machine.h" +# endif #endif #define _FP_WORKBITS 3 -#define _FP_WORK_LSB ((_FP_W_TYPE)1 << 3) -#define _FP_WORK_ROUND ((_FP_W_TYPE)1 << 2) -#define _FP_WORK_GUARD ((_FP_W_TYPE)1 << 1) -#define _FP_WORK_STICKY ((_FP_W_TYPE)1 << 0) +#define _FP_WORK_LSB ((_FP_W_TYPE) 1 << 3) +#define _FP_WORK_ROUND ((_FP_W_TYPE) 1 << 2) +#define _FP_WORK_GUARD ((_FP_W_TYPE) 1 << 1) +#define _FP_WORK_STICKY ((_FP_W_TYPE) 1 << 0) #ifndef FP_RND_NEAREST # define FP_RND_NEAREST 0 @@ -65,22 +65,22 @@ /* By default don't care about exceptions. */ #ifndef FP_EX_INVALID -#define FP_EX_INVALID 0 +# define FP_EX_INVALID 0 #endif #ifndef FP_EX_OVERFLOW -#define FP_EX_OVERFLOW 0 +# define FP_EX_OVERFLOW 0 #endif #ifndef FP_EX_UNDERFLOW -#define FP_EX_UNDERFLOW 0 +# define FP_EX_UNDERFLOW 0 #endif #ifndef FP_EX_DIVZERO -#define FP_EX_DIVZERO 0 +# define FP_EX_DIVZERO 0 #endif #ifndef FP_EX_INEXACT -#define FP_EX_INEXACT 0 +# define FP_EX_INEXACT 0 #endif #ifndef FP_EX_DENORM -#define FP_EX_DENORM 0 +# define FP_EX_DENORM 0 #endif /* _FP_STRUCT_LAYOUT may be defined as an attribute to determine the @@ -90,23 +90,31 @@ differences in how consecutive bit-fields are laid out from the default expected by soft-fp. */ #ifndef _FP_STRUCT_LAYOUT -#define _FP_STRUCT_LAYOUT +# define _FP_STRUCT_LAYOUT #endif #ifdef _FP_DECL_EX -#define FP_DECL_EX \ +# define FP_DECL_EX \ int _fex = 0; \ _FP_DECL_EX #else -#define FP_DECL_EX int _fex = 0 +# define FP_DECL_EX int _fex = 0 #endif +/* Initialize any machine-specific state used in FP_ROUNDMODE, + FP_TRAPPING_EXCEPTIONS or FP_HANDLE_EXCEPTIONS. */ #ifndef FP_INIT_ROUNDMODE -#define FP_INIT_ROUNDMODE do {} while (0) +# define FP_INIT_ROUNDMODE do {} while (0) +#endif + +/* Initialize any machine-specific state used in + FP_HANDLE_EXCEPTIONS. */ +#ifndef FP_INIT_EXCEPTIONS +# define FP_INIT_EXCEPTIONS FP_INIT_ROUNDMODE #endif #ifndef FP_HANDLE_EXCEPTIONS -#define FP_HANDLE_EXCEPTIONS do {} while (0) +# define FP_HANDLE_EXCEPTIONS do {} while (0) #endif #ifndef FP_INHIBIT_RESULTS @@ -115,15 +123,12 @@ * check if some exceptions are unmasked * and inhibit it in such a case. */ -#define FP_INHIBIT_RESULTS 0 +# define FP_INHIBIT_RESULTS 0 #endif #define FP_SET_EXCEPTION(ex) \ _fex |= (ex) -#define FP_UNSET_EXCEPTION(ex) \ - _fex &= ~(ex) - #define FP_CLEAR_EXCEPTIONS \ _fex = 0 @@ -131,58 +136,90 @@ (_fex) #ifndef FP_TRAPPING_EXCEPTIONS -#define FP_TRAPPING_EXCEPTIONS 0 +# define FP_TRAPPING_EXCEPTIONS 0 #endif -#define _FP_ROUND_NEAREST(wc, X) \ -do { \ - if ((_FP_FRAC_LOW_##wc(X) & 15) != _FP_WORK_ROUND) \ - _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND); \ -} while (0) +/* A file using soft-fp may define FP_NO_EXCEPTIONS before including + soft-fp.h to indicate that, although a macro used there could raise + exceptions, or do rounding and potentially thereby raise + exceptions, for some arguments, for the particular arguments used + in that file no exceptions or rounding can occur. Such a file + should not itself use macros relating to handling exceptions and + rounding modes; this is only for indirect uses (in particular, in + _FP_FROM_INT and the macros it calls). */ +#ifdef FP_NO_EXCEPTIONS -#define _FP_ROUND_ZERO(wc, X) (void)0 +# undef FP_SET_EXCEPTION +# define FP_SET_EXCEPTION(ex) do {} while (0) -#define _FP_ROUND_PINF(wc, X) \ -do { \ - if (!X##_s && (_FP_FRAC_LOW_##wc(X) & 7)) \ - _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB); \ -} while (0) +# undef FP_CUR_EXCEPTIONS +# define FP_CUR_EXCEPTIONS 0 -#define _FP_ROUND_MINF(wc, X) \ -do { \ - if (X##_s && (_FP_FRAC_LOW_##wc(X) & 7)) \ - _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB); \ -} while (0) +# undef FP_TRAPPING_EXCEPTIONS +# define FP_TRAPPING_EXCEPTIONS 0 + +# undef FP_ROUNDMODE +# define FP_ROUNDMODE FP_RND_ZERO + +#endif + +#define _FP_ROUND_NEAREST(wc, X) \ + do \ + { \ + if ((_FP_FRAC_LOW_##wc (X) & 15) != _FP_WORK_ROUND) \ + _FP_FRAC_ADDI_##wc (X, _FP_WORK_ROUND); \ + } \ + while (0) + +#define _FP_ROUND_ZERO(wc, X) (void) 0 + +#define _FP_ROUND_PINF(wc, X) \ + do \ + { \ + if (!X##_s && (_FP_FRAC_LOW_##wc (X) & 7)) \ + _FP_FRAC_ADDI_##wc (X, _FP_WORK_LSB); \ + } \ + while (0) + +#define _FP_ROUND_MINF(wc, X) \ + do \ + { \ + if (X##_s && (_FP_FRAC_LOW_##wc (X) & 7)) \ + _FP_FRAC_ADDI_##wc (X, _FP_WORK_LSB); \ + } \ + while (0) #define _FP_ROUND(wc, X) \ -do { \ - if (_FP_FRAC_LOW_##wc(X) & 7) \ - { \ - FP_SET_EXCEPTION(FP_EX_INEXACT); \ - switch (FP_ROUNDMODE) \ - { \ - case FP_RND_NEAREST: \ - _FP_ROUND_NEAREST(wc,X); \ - break; \ - case FP_RND_ZERO: \ - _FP_ROUND_ZERO(wc,X); \ - break; \ - case FP_RND_PINF: \ - _FP_ROUND_PINF(wc,X); \ - break; \ - case FP_RND_MINF: \ - _FP_ROUND_MINF(wc,X); \ - break; \ - } \ - } \ -} while (0) + do \ + { \ + if (_FP_FRAC_LOW_##wc (X) & 7) \ + { \ + FP_SET_EXCEPTION (FP_EX_INEXACT); \ + switch (FP_ROUNDMODE) \ + { \ + case FP_RND_NEAREST: \ + _FP_ROUND_NEAREST (wc, X); \ + break; \ + case FP_RND_ZERO: \ + _FP_ROUND_ZERO (wc, X); \ + break; \ + case FP_RND_PINF: \ + _FP_ROUND_PINF (wc, X); \ + break; \ + case FP_RND_MINF: \ + _FP_ROUND_MINF (wc, X); \ + break; \ + } \ + } \ + } \ + while (0) #define FP_CLS_NORMAL 0 #define FP_CLS_ZERO 1 #define FP_CLS_INF 2 #define FP_CLS_NAN 3 -#define _FP_CLS_COMBINE(x,y) (((x) << 2) | (y)) +#define _FP_CLS_COMBINE(x, y) (((x) << 2) | (y)) #include "op-1.h" #include "op-2.h" @@ -194,35 +231,35 @@ do { \ #define UWtype _FP_W_TYPE #define W_TYPE_SIZE _FP_W_TYPE_SIZE -typedef int QItype __attribute__((mode(QI))); -typedef int SItype __attribute__((mode(SI))); -typedef int DItype __attribute__((mode(DI))); -typedef unsigned int UQItype __attribute__((mode(QI))); -typedef unsigned int USItype __attribute__((mode(SI))); -typedef unsigned int UDItype __attribute__((mode(DI))); +typedef int QItype __attribute__ ((mode (QI))); +typedef int SItype __attribute__ ((mode (SI))); +typedef int DItype __attribute__ ((mode (DI))); +typedef unsigned int UQItype __attribute__ ((mode (QI))); +typedef unsigned int USItype __attribute__ ((mode (SI))); +typedef unsigned int UDItype __attribute__ ((mode (DI))); #if _FP_W_TYPE_SIZE == 32 -typedef unsigned int UHWtype __attribute__((mode(HI))); +typedef unsigned int UHWtype __attribute__ ((mode (HI))); #elif _FP_W_TYPE_SIZE == 64 typedef USItype UHWtype; #endif #ifndef CMPtype -#define CMPtype int +# define CMPtype int #endif -#define SI_BITS (__CHAR_BIT__ * (int)sizeof(SItype)) -#define DI_BITS (__CHAR_BIT__ * (int)sizeof(DItype)) +#define SI_BITS (__CHAR_BIT__ * (int) sizeof (SItype)) +#define DI_BITS (__CHAR_BIT__ * (int) sizeof (DItype)) #ifndef umul_ppmm -#ifdef _LIBC -#include <stdlib/longlong.h> -#else -#include "longlong.h" -#endif +# ifdef _LIBC +# include <stdlib/longlong.h> +# else +# include "longlong.h" +# endif #endif #ifdef _LIBC -#include <stdlib.h> +# include <stdlib.h> #else extern void abort (void); #endif |