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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.c174
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
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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
19void 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
28void 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
38void fsub__(void)
39{
40 /* fsub st,st(i) */
41 clear_C1();
42 FPU_sub(0, FPU_rm, control_word);
43}
44
45
46void fsubr_(void)
47{
48 /* fsubr st,st(i) */
49 clear_C1();
50 FPU_sub(REV, FPU_rm, control_word);
51}
52
53
54void fdiv__(void)
55{
56 /* fdiv st,st(i) */
57 clear_C1();
58 FPU_div(0, FPU_rm, control_word);
59}
60
61
62void fdivr_(void)
63{
64 /* fdivr st,st(i) */
65 clear_C1();
66 FPU_div(REV, FPU_rm, control_word);
67}
68
69
70
71void 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
80void 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
88void fsubri(void)
89{
90 /* fsubr st(i),st */
91 clear_C1();
92 FPU_sub(DEST_RM, FPU_rm, control_word);
93}
94
95
96void 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
104void fdivri(void)
105{
106 /* fdivr st(i),st */
107 clear_C1();
108 FPU_div(DEST_RM, FPU_rm, control_word);
109}
110
111
112void 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
121void 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
131void 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
141void 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
150void 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
159void 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
168void 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}