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1// SPDX-License-Identifier: GPL-2.0
2/*---------------------------------------------------------------------------+
3 | fpu_arith.c |
4 | |
5 | Code to implement the FPU register/register arithmetic instructions |
6 | |
7 | Copyright (C) 1992,1993,1997 |
8 | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia |
9 | E-mail billm@suburbia.net |
10 | |
11 | |
12 +---------------------------------------------------------------------------*/
13
14#include "fpu_system.h"
15#include "fpu_emu.h"
16#include "control_w.h"
17#include "status_w.h"
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
27void fmul__(void)
28{
29 /* fmul st,st(i) */
30 int i = FPU_rm;
31 clear_C1();
32 FPU_mul(&st(i), FPU_gettagi(i), 0, control_word);
33}
34
35void fsub__(void)
36{
37 /* fsub st,st(i) */
38 clear_C1();
39 FPU_sub(0, FPU_rm, control_word);
40}
41
42void fsubr_(void)
43{
44 /* fsubr st,st(i) */
45 clear_C1();
46 FPU_sub(REV, FPU_rm, control_word);
47}
48
49void fdiv__(void)
50{
51 /* fdiv st,st(i) */
52 clear_C1();
53 FPU_div(0, FPU_rm, control_word);
54}
55
56void fdivr_(void)
57{
58 /* fdivr st,st(i) */
59 clear_C1();
60 FPU_div(REV, FPU_rm, control_word);
61}
62
63void fadd_i(void)
64{
65 /* fadd st(i),st */
66 int i = FPU_rm;
67 clear_C1();
68 FPU_add(&st(i), FPU_gettagi(i), i, control_word);
69}
70
71void fmul_i(void)
72{
73 /* fmul st(i),st */
74 clear_C1();
75 FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word);
76}
77
78void fsubri(void)
79{
80 /* fsubr st(i),st */
81 clear_C1();
82 FPU_sub(DEST_RM, FPU_rm, control_word);
83}
84
85void fsub_i(void)
86{
87 /* fsub st(i),st */
88 clear_C1();
89 FPU_sub(REV | DEST_RM, FPU_rm, control_word);
90}
91
92void fdivri(void)
93{
94 /* fdivr st(i),st */
95 clear_C1();
96 FPU_div(DEST_RM, FPU_rm, control_word);
97}
98
99void fdiv_i(void)
100{
101 /* fdiv st(i),st */
102 clear_C1();
103 FPU_div(REV | DEST_RM, FPU_rm, control_word);
104}
105
106void faddp_(void)
107{
108 /* faddp st(i),st */
109 int i = FPU_rm;
110 clear_C1();
111 if (FPU_add(&st(i), FPU_gettagi(i), i, control_word) >= 0)
112 FPU_pop();
113}
114
115void fmulp_(void)
116{
117 /* fmulp st(i),st */
118 clear_C1();
119 if (FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word) >= 0)
120 FPU_pop();
121}
122
123void fsubrp(void)
124{
125 /* fsubrp st(i),st */
126 clear_C1();
127 if (FPU_sub(DEST_RM, FPU_rm, control_word) >= 0)
128 FPU_pop();
129}
130
131void fsubp_(void)
132{
133 /* fsubp st(i),st */
134 clear_C1();
135 if (FPU_sub(REV | DEST_RM, FPU_rm, control_word) >= 0)
136 FPU_pop();
137}
138
139void fdivrp(void)
140{
141 /* fdivrp st(i),st */
142 clear_C1();
143 if (FPU_div(DEST_RM, FPU_rm, control_word) >= 0)
144 FPU_pop();
145}
146
147void fdivp_(void)
148{
149 /* fdivp st(i),st */
150 clear_C1();
151 if (FPU_div(REV | DEST_RM, FPU_rm, control_word) >= 0)
152 FPU_pop();
153}
1// SPDX-License-Identifier: GPL-2.0
2/*---------------------------------------------------------------------------+
3 | fpu_arith.c |
4 | |
5 | Code to implement the FPU register/register arithmetic instructions |
6 | |
7 | Copyright (C) 1992,1993,1997 |
8 | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia |
9 | E-mail billm@suburbia.net |
10 | |
11 | |
12 +---------------------------------------------------------------------------*/
13
14#include "fpu_system.h"
15#include "fpu_emu.h"
16#include "control_w.h"
17#include "status_w.h"
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
27void fmul__(void)
28{
29 /* fmul st,st(i) */
30 int i = FPU_rm;
31 clear_C1();
32 FPU_mul(&st(i), FPU_gettagi(i), 0, control_word);
33}
34
35void fsub__(void)
36{
37 /* fsub st,st(i) */
38 clear_C1();
39 FPU_sub(0, FPU_rm, control_word);
40}
41
42void fsubr_(void)
43{
44 /* fsubr st,st(i) */
45 clear_C1();
46 FPU_sub(REV, FPU_rm, control_word);
47}
48
49void fdiv__(void)
50{
51 /* fdiv st,st(i) */
52 clear_C1();
53 FPU_div(0, FPU_rm, control_word);
54}
55
56void fdivr_(void)
57{
58 /* fdivr st,st(i) */
59 clear_C1();
60 FPU_div(REV, FPU_rm, control_word);
61}
62
63void fadd_i(void)
64{
65 /* fadd st(i),st */
66 int i = FPU_rm;
67 clear_C1();
68 FPU_add(&st(i), FPU_gettagi(i), i, control_word);
69}
70
71void fmul_i(void)
72{
73 /* fmul st(i),st */
74 clear_C1();
75 FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word);
76}
77
78void fsubri(void)
79{
80 /* fsubr st(i),st */
81 clear_C1();
82 FPU_sub(DEST_RM, FPU_rm, control_word);
83}
84
85void fsub_i(void)
86{
87 /* fsub st(i),st */
88 clear_C1();
89 FPU_sub(REV | DEST_RM, FPU_rm, control_word);
90}
91
92void fdivri(void)
93{
94 /* fdivr st(i),st */
95 clear_C1();
96 FPU_div(DEST_RM, FPU_rm, control_word);
97}
98
99void fdiv_i(void)
100{
101 /* fdiv st(i),st */
102 clear_C1();
103 FPU_div(REV | DEST_RM, FPU_rm, control_word);
104}
105
106void faddp_(void)
107{
108 /* faddp st(i),st */
109 int i = FPU_rm;
110 clear_C1();
111 if (FPU_add(&st(i), FPU_gettagi(i), i, control_word) >= 0)
112 FPU_pop();
113}
114
115void fmulp_(void)
116{
117 /* fmulp st(i),st */
118 clear_C1();
119 if (FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word) >= 0)
120 FPU_pop();
121}
122
123void fsubrp(void)
124{
125 /* fsubrp st(i),st */
126 clear_C1();
127 if (FPU_sub(DEST_RM, FPU_rm, control_word) >= 0)
128 FPU_pop();
129}
130
131void fsubp_(void)
132{
133 /* fsubp st(i),st */
134 clear_C1();
135 if (FPU_sub(REV | DEST_RM, FPU_rm, control_word) >= 0)
136 FPU_pop();
137}
138
139void fdivrp(void)
140{
141 /* fdivrp st(i),st */
142 clear_C1();
143 if (FPU_div(DEST_RM, FPU_rm, control_word) >= 0)
144 FPU_pop();
145}
146
147void fdivp_(void)
148{
149 /* fdivp st(i),st */
150 clear_C1();
151 if (FPU_div(REV | DEST_RM, FPU_rm, control_word) >= 0)
152 FPU_pop();
153}