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
|
#define _GNU_SOURCE
#include <fenv.h>
#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 "x64emu_private.h"
#include "x64run_private.h"
#include "x64primop.h"
#include "x64trace.h"
#include "x87emu_private.h"
#include "x87emu_setround.h"
#include "box64context.h"
#include "bridge.h"
#include "modrm.h"
#ifdef TEST_INTERPRETER
uintptr_t TestDA(x64test_t *test, rex_t rex, uintptr_t addr)
#else
uintptr_t RunDA(x64emu_t *emu, rex_t rex, uintptr_t addr)
#endif
{
uint8_t nextop;
reg64_t *oped;
#ifdef TEST_INTERPRETER
x64emu_t*emu = test->emu;
#endif
nextop = F8;
if(MODREG)
switch (nextop) {
case 0xC0: /* FCMOVB ST(0), ST(i) */
case 0xC1:
case 0xC2:
case 0xC3:
case 0xC4:
case 0xC5:
case 0xC6:
case 0xC7:
CHECK_FLAGS(emu);
if(ACCESS_FLAG(F_CF))
ST0.q = ST(nextop&7).q;
break;
case 0xC8: /* FCMOVE ST(0), ST(i) */
case 0xC9:
case 0xCA:
case 0xCB:
case 0xCC:
case 0xCD:
case 0xCE:
case 0xCF:
CHECK_FLAGS(emu);
if(ACCESS_FLAG(F_ZF))
ST0.q = ST(nextop&7).q;
break;
case 0xD0: /* FCMOVBE ST(0), ST(i) */
case 0xD1:
case 0xD2:
case 0xD3:
case 0xD4:
case 0xD5:
case 0xD6:
case 0xD7:
CHECK_FLAGS(emu);
if(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))
ST0.q = ST(nextop&7).q;
break;
case 0xD8: /* FCMOVU ST(0), ST(i) */
case 0xD9:
case 0xDA:
case 0xDB:
case 0xDC:
case 0xDD:
case 0xDE:
case 0xDF:
CHECK_FLAGS(emu);
if(ACCESS_FLAG(F_PF))
ST0.q = ST(nextop&7).q;
break;
case 0xE9: /* FUCOMPP */
fpu_fcom(emu, ST1.d); // bad, should handle QNaN and IA interrupt
fpu_do_pop(emu);
fpu_do_pop(emu);
break;
default:
return 0;
} else {
int oldround = fpu_setround(emu);
switch((nextop>>3)&7) {
case 0: /* FIADD ST0, Ed int */
GETE4(0);
ST0.d += ED->sdword[0];
if(!emu->cw.f.C87_PC) ST0.d = (float)ST0.d;
break;
case 1: /* FIMUL ST0, Ed int */
GETE4(0);
ST0.d *= ED->sdword[0];
if(!emu->cw.f.C87_PC) ST0.d = (float)ST0.d;
break;
case 2: /* FICOM ST0, Ed int */
GETE4(0);
fpu_fcom(emu, ED->sdword[0]);
break;
case 3: /* FICOMP ST0, Ed int */
GETE4(0);
fpu_fcom(emu, ED->sdword[0]);
fpu_do_pop(emu);
break;
case 4: /* FISUB ST0, Ed int */
GETE4(0);
ST0.d -= ED->sdword[0];
if(!emu->cw.f.C87_PC) ST0.d = (float)ST0.d;
break;
case 5: /* FISUBR ST0, Ed int */
GETE4(0);
ST0.d = (double)ED->sdword[0] - ST0.d;
if(!emu->cw.f.C87_PC) ST0.d = (float)ST0.d;
break;
case 6: /* FIDIV ST0, Ed int */
GETE4(0);
ST0.d /= ED->sdword[0];
if(!emu->cw.f.C87_PC) ST0.d = (float)ST0.d;
break;
case 7: /* FIDIVR ST0, Ed int */
GETE4(0);
ST0.d = (double)ED->sdword[0] / ST0.d;
if(!emu->cw.f.C87_PC) ST0.d = (float)ST0.d;
break;
}
fesetround(oldround);
}
return addr;
}
|