gcc/config/ia64/sfp-machine.h

   1 #define _FP_W_TYPE_SIZE         64
   2 #define _FP_W_TYPE              unsigned long
   3 #define _FP_WS_TYPE             signed long
   4 #define _FP_I_TYPE              long
   5
   6 typedef int TItype __attribute__ ((mode (TI)));
   7 typedef unsigned int UTItype __attribute__ ((mode (TI)));
   8
   9 #define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype))
  10
  11 /* The type of the result of a floating point comparison.  This must
  12    match `__libgcc_cmp_return__' in GCC for the target.  */
  13 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
  14 #define CMPtype __gcc_CMPtype
  15
  16 #define _FP_MUL_MEAT_Q(R,X,Y)                           \
  17   _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
  18
  19 #define _FP_DIV_MEAT_Q(R,X,Y)   _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
  20
  21 #define _FP_NANFRAC_S           _FP_QNANBIT_S
  22 #define _FP_NANFRAC_D           _FP_QNANBIT_D
  23 #define _FP_NANFRAC_E           _FP_QNANBIT_E, 0
  24 #define _FP_NANFRAC_Q           _FP_QNANBIT_Q, 0
  25 #define _FP_NANSIGN_S           1
  26 #define _FP_NANSIGN_D           1
  27 #define _FP_NANSIGN_E           1
  28 #define _FP_NANSIGN_Q           1
  29
  30 #define _FP_KEEPNANFRACP 1
  31
  32 /* Here is something Intel misdesigned: the specs don't define
  33    the case where we have two NaNs with same mantissas, but
  34    different sign. Different operations pick up different NaNs.  */
  35 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
  36   do {                                                          \
  37     if (_FP_FRAC_GT_##wc(X, Y)                                  \
  38         || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \
  39       {                                                         \
  40         R##_s = X##_s;                                          \
  41         _FP_FRAC_COPY_##wc(R,X);                                \
  42       }                                                         \
  43     else                                                        \
  44       {                                                         \
  45         R##_s = Y##_s;                                          \
  46         _FP_FRAC_COPY_##wc(R,Y);                                \
  47       }                                                         \
  48     R##_c = FP_CLS_NAN;                                         \
  49   } while (0)
  50
  51 #define FP_EX_INVALID           0x01
  52 #define FP_EX_DENORM            0x02
  53 #define FP_EX_DIVZERO           0x04
  54 #define FP_EX_OVERFLOW          0x08
  55 #define FP_EX_UNDERFLOW         0x10
  56 #define FP_EX_INEXACT           0x20
  57
  58 #define FP_HANDLE_EXCEPTIONS                                            \
  59   do {                                                                  \
  60     double tmp, dummy;                                                  \
  61     if (_fex & FP_EX_INVALID)                                           \
  62       {                                                                 \
  63         tmp = 0.0;                                                      \
  64         __asm__ __volatile__ ("frcpa.s0 %0,p1=f0,f0"                    \
  65                               : "=f" (tmp) : : "p1" );                  \
  66       }                                                                 \
  67     if (_fex & FP_EX_DIVZERO)                                           \
  68       {                                                                 \
  69         __asm__ __volatile__ ("frcpa.s0 %0,p1=f1,f0"                    \
  70                               : "=f" (tmp) : : "p1" );                  \
  71       }                                                                 \
  72     if (_fex & FP_EX_OVERFLOW)                                          \
  73       {                                                                 \
  74         dummy = __DBL_MAX__;                                            \
  75         __asm__ __volatile__ ("fadd.d.s0 %0=%1,%1"                      \
  76                               : "=f" (dummy) : "0" (dummy));            \
  77       }                                                                 \
  78     if (_fex & FP_EX_UNDERFLOW)                                         \
  79       {                                                                 \
  80         dummy = __DBL_MIN__;                                            \
  81         __asm__ __volatile__ ("fnma.d.s0 %0=%1,%1,f0"                   \
  82                               : "=f" (tmp) : "f" (dummy));              \
  83       }                                                                 \
  84     if (_fex & FP_EX_INEXACT)                                           \
  85       {                                                                 \
  86         dummy = __DBL_MAX__;                                            \
  87         __asm__ __volatile__ ("fsub.d.s0 %0=%1,f1"                      \
  88                               : "=f" (dummy) : "0" (dummy));            \
  89       }                                                                 \
  90   } while (0)
  91
  92 #define FP_RND_NEAREST          0
  93 #define FP_RND_ZERO             0xc00L
  94 #define FP_RND_PINF             0x800L
  95 #define FP_RND_MINF             0x400L
  96
  97 #define _FP_DECL_EX \
  98   unsigned long int _fpsr __attribute__ ((unused)) = FP_RND_NEAREST
  99
 100 #define FP_INIT_ROUNDMODE                       \
 101   do {                                          \
 102     __asm__ __volatile__ ("mov.m %0=ar.fpsr"    \
 103                           : "=r" (_fpsr));      \
 104   } while (0)
 105
 106 #define FP_ROUNDMODE            (_fpsr & 0xc00L)
 107
 108 #define __LITTLE_ENDIAN 1234
 109 #define __BIG_ENDIAN    4321
 110
 111 #define __BYTE_ORDER __LITTLE_ENDIAN
 112
 113 /* Define ALIASNAME as a strong alias for NAME.  */
 114 #define strong_alias(name, aliasname) _strong_alias(name, aliasname)
 115 #define _strong_alias(name, aliasname) \
 116   extern __typeof (name) aliasname __attribute__ ((alias (#name)));