diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/i386/math-emu/fpu_arith.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/i386/math-emu/fpu_arith.c')
-rw-r--r-- | arch/i386/math-emu/fpu_arith.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/arch/i386/math-emu/fpu_arith.c b/arch/i386/math-emu/fpu_arith.c new file mode 100644 index 000000000000..6972dec01af6 --- /dev/null +++ b/arch/i386/math-emu/fpu_arith.c | |||
@@ -0,0 +1,174 @@ | |||
1 | /*---------------------------------------------------------------------------+ | ||
2 | | fpu_arith.c | | ||
3 | | | | ||
4 | | Code to implement the FPU register/register arithmetic instructions | | ||
5 | | | | ||
6 | | Copyright (C) 1992,1993,1997 | | ||
7 | | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia | | ||
8 | | E-mail billm@suburbia.net | | ||
9 | | | | ||
10 | | | | ||
11 | +---------------------------------------------------------------------------*/ | ||
12 | |||
13 | #include "fpu_system.h" | ||
14 | #include "fpu_emu.h" | ||
15 | #include "control_w.h" | ||
16 | #include "status_w.h" | ||
17 | |||
18 | |||
19 | void fadd__(void) | ||
20 | { | ||
21 | /* fadd st,st(i) */ | ||
22 | int i = FPU_rm; | ||
23 | clear_C1(); | ||
24 | FPU_add(&st(i), FPU_gettagi(i), 0, control_word); | ||
25 | } | ||
26 | |||
27 | |||
28 | void fmul__(void) | ||
29 | { | ||
30 | /* fmul st,st(i) */ | ||
31 | int i = FPU_rm; | ||
32 | clear_C1(); | ||
33 | FPU_mul(&st(i), FPU_gettagi(i), 0, control_word); | ||
34 | } | ||
35 | |||
36 | |||
37 | |||
38 | void fsub__(void) | ||
39 | { | ||
40 | /* fsub st,st(i) */ | ||
41 | clear_C1(); | ||
42 | FPU_sub(0, FPU_rm, control_word); | ||
43 | } | ||
44 | |||
45 | |||
46 | void fsubr_(void) | ||
47 | { | ||
48 | /* fsubr st,st(i) */ | ||
49 | clear_C1(); | ||
50 | FPU_sub(REV, FPU_rm, control_word); | ||
51 | } | ||
52 | |||
53 | |||
54 | void fdiv__(void) | ||
55 | { | ||
56 | /* fdiv st,st(i) */ | ||
57 | clear_C1(); | ||
58 | FPU_div(0, FPU_rm, control_word); | ||
59 | } | ||
60 | |||
61 | |||
62 | void fdivr_(void) | ||
63 | { | ||
64 | /* fdivr st,st(i) */ | ||
65 | clear_C1(); | ||
66 | FPU_div(REV, FPU_rm, control_word); | ||
67 | } | ||
68 | |||
69 | |||
70 | |||
71 | void fadd_i(void) | ||
72 | { | ||
73 | /* fadd st(i),st */ | ||
74 | int i = FPU_rm; | ||
75 | clear_C1(); | ||
76 | FPU_add(&st(i), FPU_gettagi(i), i, control_word); | ||
77 | } | ||
78 | |||
79 | |||
80 | void fmul_i(void) | ||
81 | { | ||
82 | /* fmul st(i),st */ | ||
83 | clear_C1(); | ||
84 | FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word); | ||
85 | } | ||
86 | |||
87 | |||
88 | void fsubri(void) | ||
89 | { | ||
90 | /* fsubr st(i),st */ | ||
91 | clear_C1(); | ||
92 | FPU_sub(DEST_RM, FPU_rm, control_word); | ||
93 | } | ||
94 | |||
95 | |||
96 | void fsub_i(void) | ||
97 | { | ||
98 | /* fsub st(i),st */ | ||
99 | clear_C1(); | ||
100 | FPU_sub(REV|DEST_RM, FPU_rm, control_word); | ||
101 | } | ||
102 | |||
103 | |||
104 | void fdivri(void) | ||
105 | { | ||
106 | /* fdivr st(i),st */ | ||
107 | clear_C1(); | ||
108 | FPU_div(DEST_RM, FPU_rm, control_word); | ||
109 | } | ||
110 | |||
111 | |||
112 | void fdiv_i(void) | ||
113 | { | ||
114 | /* fdiv st(i),st */ | ||
115 | clear_C1(); | ||
116 | FPU_div(REV|DEST_RM, FPU_rm, control_word); | ||
117 | } | ||
118 | |||
119 | |||
120 | |||
121 | void faddp_(void) | ||
122 | { | ||
123 | /* faddp st(i),st */ | ||
124 | int i = FPU_rm; | ||
125 | clear_C1(); | ||
126 | if ( FPU_add(&st(i), FPU_gettagi(i), i, control_word) >= 0 ) | ||
127 | FPU_pop(); | ||
128 | } | ||
129 | |||
130 | |||
131 | void fmulp_(void) | ||
132 | { | ||
133 | /* fmulp st(i),st */ | ||
134 | clear_C1(); | ||
135 | if ( FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word) >= 0 ) | ||
136 | FPU_pop(); | ||
137 | } | ||
138 | |||
139 | |||
140 | |||
141 | void fsubrp(void) | ||
142 | { | ||
143 | /* fsubrp st(i),st */ | ||
144 | clear_C1(); | ||
145 | if ( FPU_sub(DEST_RM, FPU_rm, control_word) >= 0 ) | ||
146 | FPU_pop(); | ||
147 | } | ||
148 | |||
149 | |||
150 | void fsubp_(void) | ||
151 | { | ||
152 | /* fsubp st(i),st */ | ||
153 | clear_C1(); | ||
154 | if ( FPU_sub(REV|DEST_RM, FPU_rm, control_word) >= 0 ) | ||
155 | FPU_pop(); | ||
156 | } | ||
157 | |||
158 | |||
159 | void fdivrp(void) | ||
160 | { | ||
161 | /* fdivrp st(i),st */ | ||
162 | clear_C1(); | ||
163 | if ( FPU_div(DEST_RM, FPU_rm, control_word) >= 0 ) | ||
164 | FPU_pop(); | ||
165 | } | ||
166 | |||
167 | |||
168 | void fdivp_(void) | ||
169 | { | ||
170 | /* fdivp st(i),st */ | ||
171 | clear_C1(); | ||
172 | if ( FPU_div(REV|DEST_RM, FPU_rm, control_word) >= 0 ) | ||
173 | FPU_pop(); | ||
174 | } | ||