2 Copyright (C) 1999 Cygnus Solutions. */
7 /* Floating point support is a little more complicated.
8 We want to support using either host fp insns or an accurate fp library.
9 We also want to support easily added variants (e.g. modified ieee).
10 This is done by vectoring all calls through a table. */
14 typedef struct { SI parts
[3]; } XF
;
15 typedef struct { SI parts
[4]; } TF
;
17 #ifndef TARGET_EXT_FP_WORDS
18 #define TARGET_EXT_FP_WORDS 4
22 typedef struct cgen_fp_ops CGEN_FP_OPS
;
24 /* Instance of an fpu. */
27 /* Usually a pointer back to the SIM_CPU struct. */
29 /* Pointer to ops struct, rather than copy of it, to avoid bloating
37 /* ??? May wish to distinguish qnan/snan here. */
38 FP_CMP_EQ
, FP_CMP_LT
, FP_CMP_GT
, FP_CMP_NAN
43 typedef void (CGEN_FPU_ERROR_FN
) (CGEN_FPU
*, int);
45 /* fpu operation table */
49 /* error (e.g. signalling nan) handler, supplied by owner */
51 CGEN_FPU_ERROR_FN
*error
;
55 SF (*addsf
) (CGEN_FPU
*, SF
, SF
);
56 SF (*subsf
) (CGEN_FPU
*, SF
, SF
);
57 SF (*mulsf
) (CGEN_FPU
*, SF
, SF
);
58 SF (*divsf
) (CGEN_FPU
*, SF
, SF
);
59 SF (*negsf
) (CGEN_FPU
*, SF
);
60 SF (*abssf
) (CGEN_FPU
*, SF
);
61 SF (*sqrtsf
) (CGEN_FPU
*, SF
);
62 SF (*invsf
) (CGEN_FPU
*, SF
);
63 SF (*cossf
) (CGEN_FPU
*, SF
);
64 SF (*sinsf
) (CGEN_FPU
*, SF
);
65 SF (*minsf
) (CGEN_FPU
*, SF
, SF
);
66 SF (*maxsf
) (CGEN_FPU
*, SF
, SF
);
68 /* ??? to be revisited */
69 CGEN_FP_CMP (*cmpsf
) (CGEN_FPU
*, SF
, SF
);
70 int (*eqsf
) (CGEN_FPU
*, SF
, SF
);
71 int (*nesf
) (CGEN_FPU
*, SF
, SF
);
72 int (*ltsf
) (CGEN_FPU
*, SF
, SF
);
73 int (*lesf
) (CGEN_FPU
*, SF
, SF
);
74 int (*gtsf
) (CGEN_FPU
*, SF
, SF
);
75 int (*gesf
) (CGEN_FPU
*, SF
, SF
);
79 DF (*adddf
) (CGEN_FPU
*, DF
, DF
);
80 DF (*subdf
) (CGEN_FPU
*, DF
, DF
);
81 DF (*muldf
) (CGEN_FPU
*, DF
, DF
);
82 DF (*divdf
) (CGEN_FPU
*, DF
, DF
);
83 DF (*negdf
) (CGEN_FPU
*, DF
);
84 DF (*absdf
) (CGEN_FPU
*, DF
);
85 DF (*sqrtdf
) (CGEN_FPU
*, DF
);
86 DF (*invdf
) (CGEN_FPU
*, DF
);
87 DF (*cosdf
) (CGEN_FPU
*, DF
);
88 DF (*sindf
) (CGEN_FPU
*, DF
);
89 DF (*mindf
) (CGEN_FPU
*, DF
, DF
);
90 DF (*maxdf
) (CGEN_FPU
*, DF
, DF
);
92 /* ??? to be revisited */
93 CGEN_FP_CMP (*cmpdf
) (CGEN_FPU
*, DF
, DF
);
94 int (*eqdf
) (CGEN_FPU
*, DF
, DF
);
95 int (*nedf
) (CGEN_FPU
*, DF
, DF
);
96 int (*ltdf
) (CGEN_FPU
*, DF
, DF
);
97 int (*ledf
) (CGEN_FPU
*, DF
, DF
);
98 int (*gtdf
) (CGEN_FPU
*, DF
, DF
);
99 int (*gedf
) (CGEN_FPU
*, DF
, DF
);
101 /* SF/DF conversion ops */
103 DF (*fextsfdf
) (CGEN_FPU
*, SF
);
104 SF (*ftruncdfsf
) (CGEN_FPU
*, DF
);
106 SF (*floatsisf
) (CGEN_FPU
*, SI
);
107 SF (*floatdisf
) (CGEN_FPU
*, DI
);
108 SF (*ufloatsisf
) (CGEN_FPU
*, USI
);
109 SF (*ufloatdisf
) (CGEN_FPU
*, UDI
);
111 SI (*fixsfsi
) (CGEN_FPU
*, SF
);
112 DI (*fixsfdi
) (CGEN_FPU
*, SF
);
113 USI (*ufixsfsi
) (CGEN_FPU
*, SF
);
114 UDI (*ufixsfdi
) (CGEN_FPU
*, SF
);
116 DF (*floatsidf
) (CGEN_FPU
*, SI
);
117 DF (*floatdidf
) (CGEN_FPU
*, DI
);
118 DF (*ufloatsidf
) (CGEN_FPU
*, USI
);
119 DF (*ufloatdidf
) (CGEN_FPU
*, UDI
);
121 SI (*fixdfsi
) (CGEN_FPU
*, DF
);
122 DI (*fixdfdi
) (CGEN_FPU
*, DF
);
123 USI (*ufixdfsi
) (CGEN_FPU
*, DF
);
124 UDI (*ufixdfdi
) (CGEN_FPU
*, DF
);
126 /* XF mode support (kept separate 'cus not always present) */
128 XF (*addxf
) (CGEN_FPU
*, XF
, XF
);
129 XF (*subxf
) (CGEN_FPU
*, XF
, XF
);
130 XF (*mulxf
) (CGEN_FPU
*, XF
, XF
);
131 XF (*divxf
) (CGEN_FPU
*, XF
, XF
);
132 XF (*negxf
) (CGEN_FPU
*, XF
);
133 XF (*absxf
) (CGEN_FPU
*, XF
);
134 XF (*sqrtxf
) (CGEN_FPU
*, XF
);
135 XF (*invxf
) (CGEN_FPU
*, XF
);
136 XF (*cosxf
) (CGEN_FPU
*, XF
);
137 XF (*sinxf
) (CGEN_FPU
*, XF
);
138 XF (*minxf
) (CGEN_FPU
*, XF
, XF
);
139 XF (*maxxf
) (CGEN_FPU
*, XF
, XF
);
141 CGEN_FP_CMP (*cmpxf
) (CGEN_FPU
*, XF
, XF
);
142 int (*eqxf
) (CGEN_FPU
*, XF
, XF
);
143 int (*nexf
) (CGEN_FPU
*, XF
, XF
);
144 int (*ltxf
) (CGEN_FPU
*, XF
, XF
);
145 int (*lexf
) (CGEN_FPU
*, XF
, XF
);
146 int (*gtxf
) (CGEN_FPU
*, XF
, XF
);
147 int (*gexf
) (CGEN_FPU
*, XF
, XF
);
149 XF (*extsfxf
) (CGEN_FPU
*, SF
);
150 XF (*extdfxf
) (CGEN_FPU
*, DF
);
151 SF (*truncxfsf
) (CGEN_FPU
*, XF
);
152 DF (*truncxfdf
) (CGEN_FPU
*, XF
);
154 XF (*floatsixf
) (CGEN_FPU
*, SI
);
155 XF (*floatdixf
) (CGEN_FPU
*, DI
);
156 XF (*ufloatsixf
) (CGEN_FPU
*, USI
);
157 XF (*ufloatdixf
) (CGEN_FPU
*, UDI
);
159 SI (*fixxfsi
) (CGEN_FPU
*, XF
);
160 DI (*fixxfdi
) (CGEN_FPU
*, XF
);
161 USI (*ufixxfsi
) (CGEN_FPU
*, XF
);
162 UDI (*ufixxfdi
) (CGEN_FPU
*, XF
);
164 /* TF mode support (kept separate 'cus not always present) */
166 TF (*addtf
) (CGEN_FPU
*, TF
, TF
);
167 TF (*subtf
) (CGEN_FPU
*, TF
, TF
);
168 TF (*multf
) (CGEN_FPU
*, TF
, TF
);
169 TF (*divtf
) (CGEN_FPU
*, TF
, TF
);
170 TF (*negtf
) (CGEN_FPU
*, TF
);
171 TF (*abstf
) (CGEN_FPU
*, TF
);
172 TF (*sqrttf
) (CGEN_FPU
*, TF
);
173 TF (*invtf
) (CGEN_FPU
*, TF
);
174 TF (*costf
) (CGEN_FPU
*, TF
);
175 TF (*sintf
) (CGEN_FPU
*, TF
);
176 TF (*mintf
) (CGEN_FPU
*, TF
, TF
);
177 TF (*maxtf
) (CGEN_FPU
*, TF
, TF
);
179 CGEN_FP_CMP (*cmptf
) (CGEN_FPU
*, TF
, TF
);
180 int (*eqtf
) (CGEN_FPU
*, TF
, TF
);
181 int (*netf
) (CGEN_FPU
*, TF
, TF
);
182 int (*lttf
) (CGEN_FPU
*, TF
, TF
);
183 int (*letf
) (CGEN_FPU
*, TF
, TF
);
184 int (*gttf
) (CGEN_FPU
*, TF
, TF
);
185 int (*getf
) (CGEN_FPU
*, TF
, TF
);
187 TF (*extsftf
) (CGEN_FPU
*, SF
);
188 TF (*extdftf
) (CGEN_FPU
*, DF
);
189 SF (*trunctfsf
) (CGEN_FPU
*, TF
);
190 DF (*trunctfdf
) (CGEN_FPU
*, TF
);
192 TF (*floatsitf
) (CGEN_FPU
*, SI
);
193 TF (*floatditf
) (CGEN_FPU
*, DI
);
194 TF (*ufloatsitf
) (CGEN_FPU
*, USI
);
195 TF (*ufloatditf
) (CGEN_FPU
*, UDI
);
197 SI (*fixtfsi
) (CGEN_FPU
*, TF
);
198 DI (*fixtfdi
) (CGEN_FPU
*, TF
);
199 USI (*ufixtfsi
) (CGEN_FPU
*, TF
);
200 UDI (*ufixtfdi
) (CGEN_FPU
*, TF
);
204 extern void cgen_init_accurate_fpu (SIM_CPU
*, CGEN_FPU
*, CGEN_FPU_ERROR_FN
*);
206 BI
cgen_sf_snan_p (CGEN_FPU
*, SF
);
207 BI
cgen_df_snan_p (CGEN_FPU
*, DF
);
209 /* no-op fp error handler */
210 extern CGEN_FPU_ERROR_FN cgen_fpu_ignore_errors
;
212 #endif /* CGEN_FPU_H */
