aboutsummaryrefslogtreecommitdiff
path: root/exec-i386.h
blob: 4232973f0728847234eab590e8cd8bf38cf45495 (plain)
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
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
/*
 *  i386 execution defines 
 *
 *  Copyright (c) 2003 Fabrice Bellard
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
typedef unsigned char uint8_t;
typedef unsigned short uint16_t;
typedef unsigned int uint32_t;
typedef unsigned long long uint64_t;

typedef signed char int8_t;
typedef signed short int16_t;
typedef signed int int32_t;
typedef signed long long int64_t;

#define bswap32(x) \
({ \
	uint32_t __x = (x); \
	((uint32_t)( \
		(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
		(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) <<  8) | \
		(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >>  8) | \
		(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
})

#define NULL 0
#include <fenv.h>

typedef struct FILE FILE;
extern FILE *logfile;
extern int loglevel;
extern int fprintf(FILE *, const char *, ...);
extern int printf(const char *, ...);

#ifdef __i386__
register unsigned int T0 asm("ebx");
register unsigned int T1 asm("esi");
register unsigned int A0 asm("edi");
register struct CPUX86State *env asm("ebp");
#endif
#ifdef __powerpc__
register unsigned int EAX asm("r16");
register unsigned int ECX asm("r17");
register unsigned int EDX asm("r18");
register unsigned int EBX asm("r19");
register unsigned int ESP asm("r20");
register unsigned int EBP asm("r21");
register unsigned int ESI asm("r22");
register unsigned int EDI asm("r23");
register unsigned int T0 asm("r24");
register unsigned int T1 asm("r25");
register unsigned int A0 asm("r26");
register struct CPUX86State *env asm("r27");
#define USE_INT_TO_FLOAT_HELPERS
#define BUGGY_GCC_DIV64
#define reg_EAX
#define reg_ECX
#define reg_EDX
#define reg_EBX
#define reg_ESP
#define reg_EBP
#define reg_ESI
#define reg_EDI
#endif
#ifdef __arm__
register unsigned int T0 asm("r4");
register unsigned int T1 asm("r5");
register unsigned int A0 asm("r6");
register struct CPUX86State *env asm("r7");
#endif
#ifdef __mips__
register unsigned int T0 asm("s0");
register unsigned int T1 asm("s1");
register unsigned int A0 asm("s2");
register struct CPUX86State *env asm("s3");
#endif
#ifdef __sparc__
register unsigned int EAX asm("l0");
register unsigned int ECX asm("l1");
register unsigned int EDX asm("l2");
register unsigned int EBX asm("l3");
register unsigned int ESP asm("l4");
register unsigned int EBP asm("l5");
register unsigned int ESI asm("l6");
register unsigned int EDI asm("l7");
register unsigned int T0 asm("g1");
register unsigned int T1 asm("g2");
register unsigned int A0 asm("g3");
register struct CPUX86State *env asm("g6");
#define USE_FP_CONVERT
#define reg_EAX
#define reg_ECX
#define reg_EDX
#define reg_EBX
#define reg_ESP
#define reg_EBP
#define reg_ESI
#define reg_EDI
#endif
#ifdef __s390__
register unsigned int T0 asm("r7");
register unsigned int T1 asm("r8");
register unsigned int A0 asm("r9");
register struct CPUX86State *env asm("r10");
#endif
#ifdef __alpha__
register unsigned int T0 asm("$9");
register unsigned int T1 asm("$10");
register unsigned int A0 asm("$11");
register unsigned int EAX asm("$12");
register unsigned int ESP asm("$13");
register unsigned int EBP asm("$14");
/* Note $15 is the frame pointer, so anything in op-i386.c that would
   require a frame pointer, like alloca, would probably loose.  */
register struct CPUX86State *env asm("$15");
#define reg_EAX
#define reg_ESP
#define reg_EBP
#endif
#ifdef __ia64__
register unsigned int T0 asm("r24");
register unsigned int T1 asm("r25");
register unsigned int A0 asm("r26");
register struct CPUX86State *env asm("r27");
#endif

/* force GCC to generate only one epilog at the end of the function */
#define FORCE_RET() asm volatile ("");

#ifndef OPPROTO
#define OPPROTO
#endif

#define xglue(x, y) x ## y
#define glue(x, y) xglue(x, y)

#ifndef reg_EAX
#define EAX (env->regs[R_EAX])
#endif
#ifndef reg_ECX
#define ECX (env->regs[R_ECX])
#endif
#ifndef reg_EDX
#define EDX (env->regs[R_EDX])
#endif
#ifndef reg_EBX
#define EBX (env->regs[R_EBX])
#endif
#ifndef reg_ESP
#define ESP (env->regs[R_ESP])
#endif
#ifndef reg_EBP
#define EBP (env->regs[R_EBP])
#endif
#ifndef reg_ESI
#define ESI (env->regs[R_ESI])
#endif
#ifndef reg_EDI
#define EDI (env->regs[R_EDI])
#endif
#define EIP  (env->eip)
#define DF  (env->df)

#define CC_SRC (env->cc_src)
#define CC_DST (env->cc_dst)
#define CC_OP  (env->cc_op)

/* float macros */
#define FT0    (env->ft0)
#define ST0    (env->fpregs[env->fpstt])
#define ST(n)  (env->fpregs[(env->fpstt + (n)) & 7])
#define ST1    ST(1)

#ifdef USE_FP_CONVERT
#define FP_CONVERT  (env->fp_convert)
#endif

#ifdef __alpha__
/* the symbols are considered non exported so a br immediate is generated */
#define __hidden __attribute__((visibility("hidden")))
#else
#define __hidden 
#endif

#ifdef __alpha__
/* Suggested by Richard Henderson. This will result in code like
        ldah $0,__op_param1($29)        !gprelhigh
        lda $0,__op_param1($0)          !gprellow
   We can then conveniently change $29 to $31 and adapt the offsets to
   emit the appropriate constant.  */
extern int __op_param1 __hidden;
extern int __op_param2 __hidden;
extern int __op_param3 __hidden;
#define PARAM1 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param1)); _r; })
#define PARAM2 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param2)); _r; })
#define PARAM3 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param3)); _r; })
#else
extern int __op_param1, __op_param2, __op_param3;
#define PARAM1 ((long)(&__op_param1))
#define PARAM2 ((long)(&__op_param2))
#define PARAM3 ((long)(&__op_param3))
#endif
extern int __op_jmp0, __op_jmp1;

#include "cpu-i386.h"
#include "exec.h"

typedef struct CCTable {
    int (*compute_all)(void); /* return all the flags */
    int (*compute_c)(void);  /* return the C flag */
} CCTable;

extern CCTable cc_table[];

void load_seg(int seg_reg, int selector, unsigned cur_eip);
void __hidden cpu_lock(void);
void __hidden cpu_unlock(void);
void raise_interrupt(int intno, int is_int, int error_code, 
                     unsigned int next_eip);
void raise_exception_err(int exception_index, int error_code);
void raise_exception(int exception_index);
void __hidden cpu_loop_exit(void);
void helper_fsave(uint8_t *ptr, int data32);
void helper_frstor(uint8_t *ptr, int data32);

void OPPROTO op_movl_eflags_T0(void);
void OPPROTO op_movl_T0_eflags(void);
void raise_interrupt(int intno, int is_int, int error_code, 
                     unsigned int next_eip);
void raise_exception_err(int exception_index, int error_code);
void raise_exception(int exception_index);
void helper_divl_EAX_T0(uint32_t eip);
void helper_idivl_EAX_T0(uint32_t eip);
void helper_cmpxchg8b(void);
void helper_cpuid(void);
void helper_rdtsc(void);
void helper_lsl(void);
void helper_lar(void);

#ifdef USE_X86LDOUBLE
/* use long double functions */
#define lrint lrintl
#define llrint llrintl
#define fabs fabsl
#define sin sinl
#define cos cosl
#define sqrt sqrtl
#define pow powl
#define log logl
#define tan tanl
#define atan2 atan2l
#define floor floorl
#define ceil ceill
#define rint rintl
#endif

extern int lrint(CPU86_LDouble x);
extern int64_t llrint(CPU86_LDouble x);
extern CPU86_LDouble fabs(CPU86_LDouble x);
extern CPU86_LDouble sin(CPU86_LDouble x);
extern CPU86_LDouble cos(CPU86_LDouble x);
extern CPU86_LDouble sqrt(CPU86_LDouble x);
extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
extern CPU86_LDouble log(CPU86_LDouble x);
extern CPU86_LDouble tan(CPU86_LDouble x);
extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
extern CPU86_LDouble floor(CPU86_LDouble x);
extern CPU86_LDouble ceil(CPU86_LDouble x);
extern CPU86_LDouble rint(CPU86_LDouble x);

#define RC_MASK         0xc00
#define RC_NEAR		0x000
#define RC_DOWN		0x400
#define RC_UP		0x800
#define RC_CHOP		0xc00

#define MAXTAN 9223372036854775808.0

#ifdef __arm__
/* we have no way to do correct rounding - a FPU emulator is needed */
#define FE_DOWNWARD   FE_TONEAREST
#define FE_UPWARD     FE_TONEAREST
#define FE_TOWARDZERO FE_TONEAREST
#endif

#ifdef USE_X86LDOUBLE

/* only for x86 */
typedef union {
    long double d;
    struct {
        unsigned long long lower;
        unsigned short upper;
    } l;
} CPU86_LDoubleU;

/* the following deal with x86 long double-precision numbers */
#define MAXEXPD 0x7fff
#define EXPBIAS 16383
#define EXPD(fp)	(fp.l.upper & 0x7fff)
#define SIGND(fp)	((fp.l.upper) & 0x8000)
#define MANTD(fp)       (fp.l.lower)
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS

#else

/* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
typedef union {
    double d;
#if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
    struct {
        uint32_t lower;
        int32_t upper;
    } l;
#else
    struct {
        int32_t upper;
        uint32_t lower;
    } l;
#endif
#ifndef __arm__
    int64_t ll;
#endif
} CPU86_LDoubleU;

/* the following deal with IEEE double-precision numbers */
#define MAXEXPD 0x7ff
#define EXPBIAS 1023
#define EXPD(fp)	(((fp.l.upper) >> 20) & 0x7FF)
#define SIGND(fp)	((fp.l.upper) & 0x80000000)
#ifdef __arm__
#define MANTD(fp)	(fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32))
#else
#define MANTD(fp)	(fp.ll & ((1LL << 52) - 1))
#endif
#define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
#endif

static inline void fpush(void)
{
    env->fpstt = (env->fpstt - 1) & 7;
    env->fptags[env->fpstt] = 0; /* validate stack entry */
}

static inline void fpop(void)
{
    env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
    env->fpstt = (env->fpstt + 1) & 7;
}

#ifndef USE_X86LDOUBLE
static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
{
    CPU86_LDoubleU temp;
    int upper, e;
    uint64_t ll;

    /* mantissa */
    upper = lduw(ptr + 8);
    /* XXX: handle overflow ? */
    e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
    e |= (upper >> 4) & 0x800; /* sign */
    ll = (ldq(ptr) >> 11) & ((1LL << 52) - 1);
#ifdef __arm__
    temp.l.upper = (e << 20) | (ll >> 32);
    temp.l.lower = ll;
#else
    temp.ll = ll | ((uint64_t)e << 52);
#endif
    return temp.d;
}

static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
{
    CPU86_LDoubleU temp;
    int e;

    temp.d = f;
    /* mantissa */
    stq(ptr, (MANTD(temp) << 11) | (1LL << 63));
    /* exponent + sign */
    e = EXPD(temp) - EXPBIAS + 16383;
    e |= SIGND(temp) >> 16;
    stw(ptr + 8, e);
}
#endif

const CPU86_LDouble f15rk[7];

void helper_fldt_ST0_A0(void);
void helper_fstt_ST0_A0(void);
void helper_fbld_ST0_A0(void);
void helper_fbst_ST0_A0(void);
void helper_f2xm1(void);
void helper_fyl2x(void);
void helper_fptan(void);
void helper_fpatan(void);
void helper_fxtract(void);
void helper_fprem1(void);
void helper_fprem(void);
void helper_fyl2xp1(void);
void helper_fsqrt(void);
void helper_fsincos(void);
void helper_frndint(void);
void helper_fscale(void);
void helper_fsin(void);
void helper_fcos(void);
void helper_fxam_ST0(void);
void helper_fstenv(uint8_t *ptr, int data32);
void helper_fldenv(uint8_t *ptr, int data32);
void helper_fsave(uint8_t *ptr, int data32);
void helper_frstor(uint8_t *ptr, int data32);