1 #define _FP_W_TYPE_SIZE 64
3 #define _FP_W_TYPE unsigned long long
4 #define _FP_WS_TYPE signed long long
5 #define _FP_I_TYPE long long
7 typedef int TItype __attribute__ ((mode (TI)));
8 typedef unsigned int UTItype __attribute__ ((mode (TI)));
10 #define TI_BITS (__CHAR_BIT__ * (int)sizeof(TItype))
12 /* The type of the result of a floating point comparison. This must
13 match `__libgcc_cmp_return__' in GCC for the target. */
14 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
15 #define CMPtype __gcc_CMPtype
17 #define _FP_MUL_MEAT_Q(R,X,Y) \
18 _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
20 #define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_2_udiv(Q,R,X,Y)
22 #define _FP_NANFRAC_S _FP_QNANBIT_S
23 #define _FP_NANFRAC_D _FP_QNANBIT_D
24 #define _FP_NANFRAC_E _FP_QNANBIT_E, 0
25 #define _FP_NANFRAC_Q _FP_QNANBIT_Q, 0
26 #define _FP_NANSIGN_S 1
27 #define _FP_NANSIGN_D 1
28 #define _FP_NANSIGN_E 1
29 #define _FP_NANSIGN_Q 1
31 #define _FP_KEEPNANFRACP 1
33 /* Here is something Intel misdesigned: the specs don't define
34 the case where we have two NaNs with same mantissas, but
35 different sign. Different operations pick up different NaNs. */
36 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \
38 if (_FP_FRAC_GT_##wc(X, Y) \
39 || (_FP_FRAC_EQ_##wc(X,Y) && (OP == '+' || OP == '*'))) \
42 _FP_FRAC_COPY_##wc(R,X); \
47 _FP_FRAC_COPY_##wc(R,Y); \
53 #define FP_EX_INVALID 0x01
54 #define FP_EX_DENORM 0x02
55 #define FP_EX_DIVZERO 0x04
56 #define FP_EX_OVERFLOW 0x08
57 #define FP_EX_UNDERFLOW 0x10
58 #define FP_EX_INEXACT 0x20
62 unsigned short int __control_word;
63 unsigned short int __unused1;
64 unsigned short int __status_word;
65 unsigned short int __unused2;
66 unsigned short int __tags;
67 unsigned short int __unused3;
69 unsigned short int __cs_selector;
70 unsigned int __opcode:11;
71 unsigned int __unused4:5;
72 unsigned int __data_offset;
73 unsigned short int __data_selector;
74 unsigned short int __unused5;
78 #define ASM_INVALID "vdivss %0, %0, %0"
79 #define ASM_DIVZERO "vdivss %1, %0, %0"
81 #define ASM_INVALID "divss %0, %0"
82 #define ASM_DIVZERO "divss %1, %0"
85 #define FP_HANDLE_EXCEPTIONS \
87 if (_fex & FP_EX_INVALID) \
90 __asm__ __volatile__ (ASM_INVALID : : "x" (f)); \
92 if (_fex & FP_EX_DIVZERO) \
94 float f = 1.0, g = 0.0; \
95 __asm__ __volatile__ (ASM_DIVZERO : : "x" (f), "x" (g)); \
97 if (_fex & FP_EX_OVERFLOW) \
100 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \
101 temp.__status_word |= FP_EX_OVERFLOW; \
102 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \
103 __asm__ __volatile__ ("fwait"); \
105 if (_fex & FP_EX_UNDERFLOW) \
108 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \
109 temp.__status_word |= FP_EX_UNDERFLOW; \
110 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \
111 __asm__ __volatile__ ("fwait"); \
113 if (_fex & FP_EX_INEXACT) \
116 __asm__ __volatile__ ("fnstenv %0" : "=m" (temp)); \
117 temp.__status_word |= FP_EX_INEXACT; \
118 __asm__ __volatile__ ("fldenv %0" : : "m" (temp)); \
119 __asm__ __volatile__ ("fwait"); \
123 #define FP_RND_NEAREST 0
124 #define FP_RND_ZERO 0xc00
125 #define FP_RND_PINF 0x800
126 #define FP_RND_MINF 0x400
128 #define _FP_DECL_EX \
129 unsigned short _fcw __attribute__ ((unused)) = FP_RND_NEAREST
131 #define FP_INIT_ROUNDMODE \
133 __asm__ ("fnstcw %0" : "=m" (_fcw)); \
136 #define FP_ROUNDMODE (_fcw & 0xc00)
139 #define __LITTLE_ENDIAN 1234
140 #define __BIG_ENDIAN 4321
142 #define __BYTE_ORDER __LITTLE_ENDIAN
144 /* Define ALIASNAME as a strong alias for NAME. */
146 /* Mach-O doesn't support aliasing. If these functions ever return
147 anything but CMPtype we need to revisit this... */
148 #define strong_alias(name, aliasname) \
149 CMPtype aliasname (TFtype a, TFtype b) { return name(a, b); }
151 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
152 # define _strong_alias(name, aliasname) \
153 extern __typeof (name) aliasname __attribute__ ((alias (#name)));