1 #define _FP_W_TYPE_SIZE 64
4 #define _FP_W_TYPE unsigned long long
5 #define _FP_WS_TYPE signed long long
6 #define _FP_I_TYPE long long
8 #define _FP_W_TYPE unsigned long
9 #define _FP_WS_TYPE signed long
10 #define _FP_I_TYPE long
13 typedef int TItype __attribute__ ((mode (TI)));
14 typedef unsigned int UTItype __attribute__ ((mode (TI)));
16 #define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype))
18 /* The type of the result of a floating point comparison. This must
19 match `__libgcc_cmp_return__' in GCC for the target. */
20 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
21 #define CMPtype __gcc_CMPtype
23 #define _FP_MUL_MEAT_Q(R,X,Y) \
24 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
26 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
28 #define _FP_NANFRAC_S _FP_QNANBIT_S
29 #define _FP_NANFRAC_D _FP_QNANBIT_D
30 #define _FP_NANFRAC_E _FP_QNANBIT_E, 0
31 #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0
32 #define _FP_NANSIGN_S 1
33 #define _FP_NANSIGN_D 1
34 #define _FP_NANSIGN_E 1
35 #define _FP_NANSIGN_Q 1
37 #define _FP_KEEPNANFRACP 1
39 /* Here is something Intel misdesigned: the specs don't define
40 the case where we have two NaNs with same mantissas, but
41 different sign. Different operations pick up different NaNs. */
42 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
44 if (_FP_FRAC_GT_##wc(X, Y) \
45 || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \
48 _FP_FRAC_COPY_##wc(R,X); \
53 _FP_FRAC_COPY_##wc(R,Y); \
58 #define FP_EX_INVALID 0x01
59 #define FP_EX_DENORM 0x02
60 #define FP_EX_DIVZERO 0x04
61 #define FP_EX_OVERFLOW 0x08
62 #define FP_EX_UNDERFLOW 0x10
63 #define FP_EX_INEXACT 0x20
67 unsigned short int __control_word;
68 unsigned short int __unused1;
69 unsigned short int __status_word;
70 unsigned short int __unused2;
71 unsigned short int __tags;
72 unsigned short int __unused3;
74 unsigned short int __cs_selector;
75 unsigned int __opcode:11;
76 unsigned int __unused4:5;
77 unsigned int __data_offset;
78 unsigned short int __data_selector;
79 unsigned short int __unused5;
82 #define FP_HANDLE_EXCEPTIONS \
84 if (_fex & FP_EX_INVALID) \
87 __asm__ __volatile__ ("divss %0, %0 " : : "x" (f)); \
89 if (_fex & FP_EX_DIVZERO) \
91 float f = 1.0, g = 0.0; \
92 __asm__ __volatile__ ("divss %1, %0" : : "x" (f), "x" (g)); \
94 if (_fex & FP_EX_OVERFLOW) \
97 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \
98 temp.__status_word |= FP_EX_OVERFLOW; \
99 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \
100 __asm__ __volatile__ ("fwait"); \
102 if (_fex & FP_EX_UNDERFLOW) \
105 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \
106 temp.__status_word |= FP_EX_UNDERFLOW; \
107 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \
108 __asm__ __volatile__ ("fwait"); \
110 if (_fex & FP_EX_INEXACT) \
113 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \
114 temp.__status_word |= FP_EX_INEXACT; \
115 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \
116 __asm__ __volatile__ ("fwait"); \
120 #define FP_RND_NEAREST 0
121 #define FP_RND_ZERO 0xc00
122 #define FP_RND_PINF 0x800
123 #define FP_RND_MINF 0x400
125 #define _FP_DECL_EX \
126 unsigned short _fcw __attribute__ ((unused)) = FP_RND_NEAREST
128 #define FP_INIT_ROUNDMODE \
130 __asm__ ("fnstcw %0" : "=m" (_fcw)); \
133 #define FP_ROUNDMODE (_fcw & 0xc00)
135 #define __LITTLE_ENDIAN 1234
136 #define __BIG_ENDIAN 4321
138 #define __BYTE_ORDER __LITTLE_ENDIAN
140 /* Define ALIASNAME as a strong alias for NAME. */
142 /* Mach-O doesn't support aliasing. If these functions ever return
143 anything but CMPtype we need to revisit this... */
144 #define strong_alias(name, aliasname) \
145 CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); }
147 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
148 # define _strong_alias(name, aliasname) \
149 extern __typeof (name) aliasname __attribute__ ((alias (#name)));