Mercurial > hg > CbC > CbC_gcc
annotate libgcc/config/i386/32/sfp-machine.h @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
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date | Fri, 12 Feb 2010 23:39:51 +0900 |
parents | a06113de4d67 |
children | b7f97abdc517 |
rev | line source |
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0 | 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)), \ | |
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
57 "g" ((USItype) (y0))) |
0 | 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 %0" : "+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" : "=t" (f) \ | |
146 : "0" (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 |