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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <errno.h>
#include "debug.h"
#include "box64context.h"
#include "dynarec.h"
#include "emu/x64emu_private.h"
#include "emu/x64run_private.h"
#include "x64run.h"
#include "x64emu.h"
#include "box64stack.h"
#include "callback.h"
#include "emu/x64run_private.h"
#include "x64trace.h"
#include "emu/x87emu_private.h"
#include "dynarec_native.h"
#include "rv64_printer.h"
#include "dynarec_rv64_private.h"
#include "dynarec_rv64_helper.h"
#include "dynarec_rv64_functions.h"
uintptr_t dynarec64_DF(dynarec_rv64_t* dyn, uintptr_t addr, uintptr_t ip, int ninst, rex_t rex, int rep, int* ok, int* need_epilog)
{
(void)ip; (void)rep; (void)need_epilog;
uint8_t nextop = F8;
uint8_t ed, wback, u8;
int v1, v2;
int s0;
int64_t j64;
int64_t fixedaddress;
MAYUSE(s0);
MAYUSE(v2);
MAYUSE(v1);
MAYUSE(j64);
switch(nextop) {
case 0xC0 ... 0xC7:
INST_NAME("FFREEP STx");
// not handling Tag...
X87_POP_OR_FAIL(dyn, ninst, x3);
break;
case 0xE0:
INST_NAME("FNSTSW AX");
LWU(x2, xEmu, offsetof(x64emu_t, top));
LHU(x1, xEmu, offsetof(x64emu_t, sw));
MOV32w(x3, 0b1100011111111111); // mask
AND(x1, x1, x3);
SLLI(x2, x2, 11);
OR(x1, x1, x2); // inject top
SH(x1, xEmu, offsetof(x64emu_t, sw));
SRLI(xRAX, xRAX, 16);
SLLI(xRAX, xRAX, 16);
OR(xRAX, xRAX, x1);
break;
case 0xE8 ... 0xF7:
if (nextop < 0xF0) {
INST_NAME("FUCOMIP ST0, STx");
} else {
INST_NAME("FCOMIP ST0, STx");
}
SETFLAGS(X_ALL, SF_SET);
SET_DFNONE();
v1 = x87_get_st(dyn, ninst, x1, x2, 0, X87_COMBINE(0, nextop&7));
v2 = x87_get_st(dyn, ninst, x1, x2, nextop&7, X87_COMBINE(0, nextop&7));
CLEAR_FLAGS();
IFX(X_ZF | X_PF | X_CF) {
if(ST_IS_F(0)) {
FEQS(x5, v1, v1);
FEQS(x4, v2, v2);
AND(x5, x5, x4);
BEQZ(x5, 24); // undefined/NaN
FEQS(x5, v1, v2);
BNEZ(x5, 24); // equal
FLTS(x3, v1, v2); // x3 = (v1<v2)?1:0
OR(xFlags, xFlags, x3); // CF is the least significant bit
J(16); // end
// NaN
ORI(xFlags, xFlags, (1<<F_ZF) | (1<<F_PF) | (1<<F_CF));
J(8); // end
// equal
ORI(xFlags, xFlags, 1<<F_ZF);
// end
} else {
FEQD(x5, v1, v1);
FEQD(x4, v2, v2);
AND(x5, x5, x4);
BEQZ(x5, 24); // undefined/NaN
FEQD(x5, v1, v2);
BNEZ(x5, 24); // equal
FLTD(x3, v1, v2); // x3 = (v1<v2)?1:0
OR(xFlags, xFlags, x3); // CF is the least significant bit
J(16); // end
// NaN
ORI(xFlags, xFlags, (1<<F_ZF) | (1<<F_PF) | (1<<F_CF));
J(8); // end
// equal
ORI(xFlags, xFlags, 1<<F_ZF);
// end
}
}
X87_POP_OR_FAIL(dyn, ninst, x3);
break;
case 0xC8 ... 0xDF:
case 0xE1 ... 0xE7:
case 0xF8 ... 0xFF:
DEFAULT;
break;
default:
switch((nextop>>3)&7) {
case 0:
INST_NAME("FILD ST0, Ew");
X87_PUSH_OR_FAIL(v1, dyn, ninst, x1, EXT_CACHE_ST_F);
addr = geted(dyn, addr, ninst, nextop, &wback, x3, x4, &fixedaddress, rex, NULL, 1, 0);
LH(x1, wback, fixedaddress);
if(ST_IS_F(0)) {
FCVTSL(v1, x1, RD_RNE);
} else {
FCVTDL(v1, x1, RD_RNE);
}
break;
case 1:
INST_NAME("FISTTP Ew, ST0");
v1 = x87_get_st(dyn, ninst, x1, x2, 0, EXT_CACHE_ST_F);
addr = geted(dyn, addr, ninst, nextop, &wback, x3, x4, &fixedaddress, rex, NULL, 1, 0);
if(!box64_dynarec_fastround) {
FSFLAGSI(0); // reset all bits
}
if (ST_IS_F(0)) {
FCVTWS(x4, v1, RD_RTZ);
} else {
FCVTWD(x4, v1, RD_RTZ);
}
if(!box64_dynarec_fastround) {
FRFLAGS(x5); // get back FPSR to check the IOC bit
ANDI(x5, x5, 1<<FR_NV);
BNEZ_MARK(x5);
SLLIW(x5, x4, 16);
SRAIW(x5, x5, 16);
BEQ_MARK2(x5, x4);
MARK;
MOV32w(x4, 0x8000);
}
MARK2;
SH(x4, wback, fixedaddress);
X87_POP_OR_FAIL(dyn, ninst, x3);
break;
case 2:
INST_NAME("FIST Ew, ST0");
v1 = x87_get_st(dyn, ninst, x1, x2, 0, EXT_CACHE_ST_F);
u8 = x87_setround(dyn, ninst, x1, x2);
addr = geted(dyn, addr, ninst, nextop, &wback, x2, x3, &fixedaddress, rex, NULL, 1, 0);
if(!box64_dynarec_fastround) {
FSFLAGSI(0); // reset all bits
}
if (ST_IS_F(0)) {
FCVTWS(x4, v1, RD_DYN);
} else {
FCVTWD(x4, v1, RD_DYN);
}
x87_restoreround(dyn, ninst, u8);
if(!box64_dynarec_fastround) {
FRFLAGS(x5); // get back FPSR to check the IOC bit
ANDI(x5, x5, 1<<FR_NV);
BNEZ_MARK(x5);
SLLIW(x5, x4, 16);
SRAIW(x5, x5, 16);
BEQ_MARK2(x5, x4);
MARK;
MOV32w(x4, 0x8000);
}
MARK2;
SH(x4, wback, fixedaddress);
break;
case 3:
INST_NAME("FISTP Ew, ST0");
v1 = x87_get_st(dyn, ninst, x1, x2, 0, EXT_CACHE_ST_F);
u8 = x87_setround(dyn, ninst, x1, x2);
addr = geted(dyn, addr, ninst, nextop, &wback, x2, x3, &fixedaddress, rex, NULL, 1, 0);
if(!box64_dynarec_fastround) {
FSFLAGSI(0); // reset all bits
}
if (ST_IS_F(0)) {
FCVTWS(x4, v1, RD_DYN);
} else {
FCVTWD(x4, v1, RD_DYN);
}
x87_restoreround(dyn, ninst, u8);
if(!box64_dynarec_fastround) {
FRFLAGS(x5); // get back FPSR to check the IOC bit
ANDI(x5, x5, 1<<FR_NV);
BNEZ_MARK(x5);
SLLIW(x5, x4, 16);
SRAIW(x5, x5, 16);
BEQ_MARK2(x5, x4);
MARK;
MOV32w(x4, 0x8000);
}
MARK2;
SH(x4, wback, fixedaddress);
X87_POP_OR_FAIL(dyn, ninst, x3);
break;
case 4:
INST_NAME("FBLD ST0, tbytes");
X87_PUSH_EMPTY_OR_FAIL(dyn, ninst, x1);
addr = geted(dyn, addr, ninst, nextop, &ed, x1, x2, &fixedaddress, rex, NULL, 0, 0);
if(ed != x1) { MV(x1, ed); }
s0 = x87_stackcount(dyn, ninst, x3);
CALL(fpu_fbld, -1);
x87_unstackcount(dyn, ninst, x3, s0);
break;
case 5:
INST_NAME("FILD ST0, i64");
X87_PUSH_OR_FAIL(v1, dyn, ninst, x1, EXT_CACHE_ST_I64);
addr = geted(dyn, addr, ninst, nextop, &wback, x2, x3, &fixedaddress, rex, NULL, 1, 0);
if (ST_IS_I64(0)) {
FLD(v1, wback, fixedaddress);
} else {
LD(x1, wback, fixedaddress);
if (rex.is32bits) {
// need to also feed the STll stuff...
ADDI(x4, xEmu, offsetof(x64emu_t, fpu_ll));
LWU(x5, xEmu, offsetof(x64emu_t, top));
int a = 0 - dyn->e.x87stack;
if (a) {
ADDIW(x5, x5, a);
ANDI(x5, x5, 0x7);
}
SLLI(x5, x5, 4); // fpu_ll is 2 i64
ADD(x5, x5, x4);
SD(x1, x5, 8); // ll
}
FCVTDL(v1, x1, RD_RTZ);
if (rex.is32bits) {
FSD(v1, x5, 0); // ref
}
}
break;
case 6:
INST_NAME("FBSTP tbytes, ST0");
x87_forget(dyn, ninst, x1, x2, 0);
addr = geted(dyn, addr, ninst, nextop, &ed, x1, x2, &fixedaddress, rex, NULL, 0, 0);
if (ed != x1) { MV(x1, ed); }
s0 = x87_stackcount(dyn, ninst, x3);
CALL(fpu_fbst, -1);
x87_unstackcount(dyn, ninst, x3, s0);
X87_POP_OR_FAIL(dyn, ninst, x3);
break;
case 7:
INST_NAME("FISTP i64, ST0");
v1 = x87_get_st(dyn, ninst, x1, x2, 0, EXT_CACHE_ST_I64);
if (!ST_IS_I64(0)) {
u8 = x87_setround(dyn, ninst, x1, x2);
}
addr = geted(dyn, addr, ninst, nextop, &wback, x2, x3, &fixedaddress, rex, NULL, 1, 0);
if (ST_IS_I64(0)) {
FSD(v1, wback, fixedaddress);
} else {
if (rex.is32bits) {
// need to check STll first...
ADDI(x4, xEmu, offsetof(x64emu_t, fpu_ll));
LWU(x5, xEmu, offsetof(x64emu_t, top));
int a = 0 - dyn->e.x87stack;
if (a) {
ADDIW(x5, x5, a);
ANDI(x5, x5, 0x7);
}
SLLI(x5, x5, 4); // fpu_ll is 2 i64
ADD(x5, x5, x4);
FMVXD(x3, v1);
LD(x6, x5, 0); // ref
BNE_MARK(x6, x3);
LD(x6, x5, 8); // ll
SD(x6, wback, fixedaddress);
B_MARK3_nocond;
MARK;
}
if (!box64_dynarec_fastround) {
FSFLAGSI(0); // reset all bits
}
FCVTLD(x4, v1, RD_DYN);
if (!box64_dynarec_fastround) {
FRFLAGS(x5); // get back FPSR to check the IOC bit
ANDI(x5, x5, 1 << FR_NV);
BEQ_MARK2(x5, xZR);
MOV64x(x4, 0x8000000000000000LL);
}
MARK2;
SD(x4, wback, fixedaddress);
MARK3;
x87_restoreround(dyn, ninst, u8);
}
X87_POP_OR_FAIL(dyn, ninst, x3);
break;
default:
DEFAULT;
break;
}
}
return addr;
}
|