1 #define _FP_W_TYPE_SIZE 32 2 #define _FP_W_TYPE unsigned int 3 #define _FP_WS_TYPE signed int 4 #define _FP_I_TYPE int 5 6 /* The type of the result of a floating point comparison. This must 7 match `__libgcc_cmp_return__' in GCC for the target. */ 8 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__))); 9 #define CMPtype __gcc_CMPtype 10 11 #define __FP_FRAC_ADD_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \ 12 __asm__ ("add{l} {%11,%3|%3,%11}\n\t" \ 13 "adc{l} {%9,%2|%2,%9}\n\t" \ 14 "adc{l} {%7,%1|%1,%7}\n\t" \ 15 "adc{l} {%5,%0|%0,%5}" \ 16 : "=r" ((USItype) (r3)), \ 17 "=&r" ((USItype) (r2)), \ 18 "=&r" ((USItype) (r1)), \ 19 "=&r" ((USItype) (r0)) \ 20 : "%0" ((USItype) (x3)), \ 21 "g" ((USItype) (y3)), \ 22 "%1" ((USItype) (x2)), \ 23 "g" ((USItype) (y2)), \ 24 "%2" ((USItype) (x1)), \ 25 "g" ((USItype) (y1)), \ 26 "%3" ((USItype) (x0)), \ 27 "g" ((USItype) (y0))) 28 #define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) \ 29 __asm__ ("add{l} {%8,%2|%2,%8}\n\t" \ 30 "adc{l} {%6,%1|%1,%6}\n\t" \ 31 "adc{l} {%4,%0|%0,%4}" \ 32 : "=r" ((USItype) (r2)), \ 33 "=&r" ((USItype) (r1)), \ 34 "=&r" ((USItype) (r0)) \ 35 : "%0" ((USItype) (x2)), \ 36 "g" ((USItype) (y2)), \ 37 "%1" ((USItype) (x1)), \ 38 "g" ((USItype) (y1)), \ 39 "%2" ((USItype) (x0)), \ 40 "g" ((USItype) (y0))) 41 #define __FP_FRAC_SUB_4(r3,r2,r1,r0,x3,x2,x1,x0,y3,y2,y1,y0) \ 42 __asm__ ("sub{l} {%11,%3|%3,%11}\n\t" \ 43 "sbb{l} {%9,%2|%2,%9}\n\t" \ 44 "sbb{l} {%7,%1|%1,%7}\n\t" \ 45 "sbb{l} {%5,%0|%0,%5}" \ 46 : "=r" ((USItype) (r3)), \ 47 "=&r" ((USItype) (r2)), \ 48 "=&r" ((USItype) (r1)), \ 49 "=&r" ((USItype) (r0)) \ 50 : "0" ((USItype) (x3)), \ 51 "g" ((USItype) (y3)), \ 52 "1" ((USItype) (x2)), \ 53 "g" ((USItype) (y2)), \ 54 "2" ((USItype) (x1)), \ 55 "g" ((USItype) (y1)), \ 56 "3" ((USItype) (x0)), \ 57 "g" ((USItype) (y0))) 58 #define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) \ 59 __asm__ ("sub{l} {%8,%2|%2,%8}\n\t" \ 60 "sbb{l} {%6,%1|%1,%6}\n\t" \ 61 "sbb{l} {%4,%0|%0,%4}" \ 62 : "=r" ((USItype) (r2)), \ 63 "=&r" ((USItype) (r1)), \ 64 "=&r" ((USItype) (r0)) \ 65 : "0" ((USItype) (x2)), \ 66 "g" ((USItype) (y2)), \ 67 "1" ((USItype) (x1)), \ 68 "g" ((USItype) (y1)), \ 69 "2" ((USItype) (x0)), \ 70 "g" ((USItype) (y0))) 71 72 73 #define _FP_MUL_MEAT_Q(R,X,Y) \ 74 _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) 75 76 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) 77 78 #define _FP_NANFRAC_S _FP_QNANBIT_S 79 #define _FP_NANFRAC_D _FP_QNANBIT_D, 0 80 /* Even if XFmode is 12byte, we have to pad it to 81 16byte since soft-fp emulation is done in 16byte. */ 82 #define _FP_NANFRAC_E _FP_QNANBIT_E, 0, 0, 0 83 #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0, 0, 0 84 #define _FP_NANSIGN_S 1 85 #define _FP_NANSIGN_D 1 86 #define _FP_NANSIGN_E 1 87 #define _FP_NANSIGN_Q 1 88 89 #define _FP_KEEPNANFRACP 1 90 91 /* Here is something Intel misdesigned: the specs don't define 92 the case where we have two NaNs with same mantissas, but 93 different sign. Different operations pick up different NaNs. */ 94 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ 95 do { \ 96 if (_FP_FRAC_GT_##wc(X, Y) \ 97 || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \ 98 { \ 99 R##_s = X##_s; \ 100 _FP_FRAC_COPY_##wc(R,X); \ 101 } \ 102 else \ 103 { \ 104 R##_s = Y##_s; \ 105 _FP_FRAC_COPY_##wc(R,Y); \ 106 } \ 107 R##_c = FP_CLS_NAN; \ 108 } while (0) 109 110 #define FP_EX_INVALID 0x01 111 #define FP_EX_DENORM 0x02 112 #define FP_EX_DIVZERO 0x04 113 #define FP_EX_OVERFLOW 0x08 114 #define FP_EX_UNDERFLOW 0x10 115 #define FP_EX_INEXACT 0x20 116 117 struct fenv 118 { 119 unsigned short int __control_word; 120 unsigned short int __unused1; 121 unsigned short int __status_word; 122 unsigned short int __unused2; 123 unsigned short int __tags; 124 unsigned short int __unused3; 125 unsigned int __eip; 126 unsigned short int __cs_selector; 127 unsigned int __opcode:11; 128 unsigned int __unused4:5; 129 unsigned int __data_offset; 130 unsigned short int __data_selector; 131 unsigned short int __unused5; 132 }; 133 134 #define FP_HANDLE_EXCEPTIONS \ 135 do { \ 136 if (_fex & FP_EX_INVALID) \ 137 { \ 138 float f = 0.0; \ 139 __asm__ __volatile__ ("fdiv {%y0, %0|%0, %y0}" : "+t" (f)); \ 140 __asm__ __volatile__ ("fwait"); \ 141 } \ 142 if (_fex & FP_EX_DIVZERO) \ 143 { \ 144 float f = 1.0, g = 0.0; \ 145 __asm__ __volatile__ ("fdivp {%0, %y1|%y1, %0}" \ 146 : "+t" (f) : "u" (g) \ 147 : "st(1)"); \ 148 __asm__ __volatile__ ("fwait"); \ 149 } \ 150 if (_fex & FP_EX_OVERFLOW) \ 151 { \ 152 struct fenv temp; \ 153 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ 154 temp.__status_word |= FP_EX_OVERFLOW; \ 155 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ 156 __asm__ __volatile__ ("fwait"); \ 157 } \ 158 if (_fex & FP_EX_UNDERFLOW) \ 159 { \ 160 struct fenv temp; \ 161 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ 162 temp.__status_word |= FP_EX_UNDERFLOW; \ 163 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ 164 __asm__ __volatile__ ("fwait"); \ 165 } \ 166 if (_fex & FP_EX_INEXACT) \ 167 { \ 168 struct fenv temp; \ 169 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \ 170 temp.__status_word |= FP_EX_INEXACT; \ 171 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \ 172 __asm__ __volatile__ ("fwait"); \ 173 } \ 174 } while (0) 175 176 #define FP_RND_NEAREST 0 177 #define FP_RND_ZERO 0xc00 178 #define FP_RND_PINF 0x800 179 #define FP_RND_MINF 0x400 180 181 #define _FP_DECL_EX \ 182 unsigned short _fcw __attribute__ ((unused)) = FP_RND_NEAREST 183 184 #define FP_INIT_ROUNDMODE \ 185 do { \ 186 __asm__ ("fnstcw %0" : "=m" (_fcw)); \ 187 } while (0) 188 189 #define FP_ROUNDMODE (_fcw & 0xc00) 190 191 #define __LITTLE_ENDIAN 1234 192 #define __BIG_ENDIAN 4321 193 194 #define __BYTE_ORDER __LITTLE_ENDIAN 195 196 /* Define ALIASNAME as a strong alias for NAME. */ 197 #if defined __MACH__ 198 /* Mach-O doesn't support aliasing. If these functions ever return 199 anything but CMPtype we need to revisit this... */ 200 #define strong_alias(name, aliasname) \ 201 CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); } 202 #else 203 # define strong_alias(name, aliasname) _strong_alias(name, aliasname) 204 # define _strong_alias(name, aliasname) \ 205 extern __typeof (name) aliasname __attribute__ ((alias (#name))); 206 #endif 207