1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
#define _GNU_SOURCE
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h>
#include <unistd.h>
#include "debug.h"
#include "box64stack.h"
#include "x64emu.h"
#include "x64run.h"
#include "x64emu_private.h"
#include "x64run_private.h"
#include "x64primop.h"
#include "x64trace.h"
#include "x87emu_private.h"
#include "box64context.h"
#include "bridge.h"
#include "modrm.h"
int RunDC(x64emu_t *emu, rex_t rex)
{
uint8_t nextop;
reg64_t *oped;
nextop = F8;
switch(nextop) {
case 0xC0:
case 0xC1:
case 0xC2:
case 0xC3:
case 0xC4:
case 0xC5:
case 0xC6:
case 0xC7: /* FADD */
ST(nextop&7).d += ST0.d;
break;
case 0xC8:
case 0xC9:
case 0xCA:
case 0xCB:
case 0xCC:
case 0xCD:
case 0xCE:
case 0xCF: /* FMUL */
ST(nextop&7).d *= ST0.d;
break;
case 0xD0:
case 0xD1:
case 0xD2:
case 0xD3:
case 0xD4:
case 0xD5:
case 0xD6:
case 0xD7: /* FCOM */
fpu_fcom(emu, ST(nextop&7).d);
break;
case 0xD8:
case 0xD9:
case 0xDA:
case 0xDB:
case 0xDC:
case 0xDD:
case 0xDE:
case 0xDF: /* FCOMP */
fpu_fcom(emu, ST(nextop&7).d);
fpu_do_pop(emu);
break;
case 0xE0:
case 0xE1:
case 0xE2:
case 0xE3:
case 0xE4:
case 0xE5:
case 0xE6:
case 0xE7: /* FSUBR */
ST(nextop&7).d = ST0.d -ST(nextop&7).d;
break;
case 0xE8:
case 0xE9:
case 0xEA:
case 0xEB:
case 0xEC:
case 0xED:
case 0xEE:
case 0xEF: /* FSUB */
ST(nextop&7).d -= ST0.d;
break;
case 0xF0:
case 0xF1:
case 0xF2:
case 0xF3:
case 0xF4:
case 0xF5:
case 0xF6:
case 0xF7: /* FDIVR */
ST(nextop&7).d = ST0.d / ST(nextop&7).d;
break;
case 0xF8:
case 0xF9:
case 0xFA:
case 0xFB:
case 0xFC:
case 0xFD:
case 0xFE:
case 0xFF: /* FDIV */
ST(nextop&7).d /= ST0.d;
break;
default:
GETED(0);
switch((nextop>>3)&7) {
case 0: /* FADD ST0, double */
ST0.d += *(double*)ED;
break;
case 1: /* FMUL ST0, double */
ST0.d *= *(double*)ED;
break;
case 2: /* FCOM ST0, double */
fpu_fcom(emu, *(double*)ED);
break;
case 3: /* FCOMP ST0, double */
fpu_fcom(emu, *(double*)ED);
fpu_do_pop(emu);
break;
case 4: /* FSUB ST0, double */
ST0.d -= *(double*)ED;
break;
case 5: /* FSUBR ST0, double */
ST0.d = *(double*)ED - ST0.d;
break;
case 6: /* FDIV ST0, double */
ST0.d /= *(double*)ED;
break;
case 7: /* FDIVR ST0, double */
ST0.d = *(double*)ED / ST0.d;
break;
default:
return 1;
}
}
return 0;
}
|