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2 * i386 execution defines
4 * Copyright (c) 2003 Fabrice Bellard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include "dyngen-exec.h"
23 /* XXX: factorize this mess */
25 #define TARGET_LONG_BITS 64
27 #define TARGET_LONG_BITS 32
32 /* at least 4 register variables are defined */
33 register struct CPUX86State
*env
asm(AREG0
);
35 #if TARGET_LONG_BITS > HOST_LONG_BITS
37 /* no registers can be used */
44 /* XXX: use unsigned long instead of target_ulong - better code will
45 be generated for 64 bit CPUs */
46 register target_ulong T0
asm(AREG1
);
47 register target_ulong T1
asm(AREG2
);
48 register target_ulong T2
asm(AREG3
);
50 /* if more registers are available, we define some registers too */
52 register target_ulong EAX
asm(AREG4
);
57 register target_ulong ESP
asm(AREG5
);
62 register target_ulong EBP
asm(AREG6
);
67 register target_ulong ECX
asm(AREG7
);
72 register target_ulong EDX
asm(AREG8
);
77 register target_ulong EBX
asm(AREG9
);
82 register target_ulong ESI
asm(AREG10
);
87 register target_ulong EDI
asm(AREG11
);
91 #endif /* ! (TARGET_LONG_BITS > HOST_LONG_BITS) */
99 #define EAX (env->regs[R_EAX])
102 #define ECX (env->regs[R_ECX])
105 #define EDX (env->regs[R_EDX])
108 #define EBX (env->regs[R_EBX])
111 #define ESP (env->regs[R_ESP])
114 #define EBP (env->regs[R_EBP])
117 #define ESI (env->regs[R_ESI])
120 #define EDI (env->regs[R_EDI])
122 #define EIP (env->eip)
125 #define CC_SRC (env->cc_src)
126 #define CC_DST (env->cc_dst)
127 #define CC_OP (env->cc_op)
130 #define FT0 (env->ft0)
131 #define ST0 (env->fpregs[env->fpstt].d)
132 #define ST(n) (env->fpregs[(env->fpstt + (n)) & 7].d)
135 #ifdef USE_FP_CONVERT
136 #define FP_CONVERT (env->fp_convert)
140 #include "exec-all.h"
142 /* XXX: add a generic FPU library */
144 static inline double float32_to_float64(float a
)
149 static inline float float64_to_float32(double a
)
154 #if defined(__powerpc__)
155 /* better to call an helper on ppc */
156 float int32_to_float32(int32_t a
);
157 double int32_to_float64(int32_t a
);
159 static inline float int32_to_float32(int32_t a
)
164 static inline double int32_to_float64(int32_t a
)
170 static inline float int64_to_float32(int64_t a
)
175 static inline double int64_to_float64(int64_t a
)
180 typedef struct CCTable
{
181 int (*compute_all
)(void); /* return all the flags */
182 int (*compute_c
)(void); /* return the C flag */
185 extern CCTable cc_table
[];
187 void load_seg(int seg_reg
, int selector
);
188 void helper_ljmp_protected_T0_T1(int next_eip
);
189 void helper_lcall_real_T0_T1(int shift
, int next_eip
);
190 void helper_lcall_protected_T0_T1(int shift
, int next_eip
);
191 void helper_iret_real(int shift
);
192 void helper_iret_protected(int shift
, int next_eip
);
193 void helper_lret_protected(int shift
, int addend
);
194 void helper_lldt_T0(void);
195 void helper_ltr_T0(void);
196 void helper_movl_crN_T0(int reg
);
197 void helper_movl_drN_T0(int reg
);
198 void helper_invlpg(unsigned int addr
);
199 void cpu_x86_update_cr0(CPUX86State
*env
, uint32_t new_cr0
);
200 void cpu_x86_update_cr3(CPUX86State
*env
, target_ulong new_cr3
);
201 void cpu_x86_update_cr4(CPUX86State
*env
, uint32_t new_cr4
);
202 void cpu_x86_flush_tlb(CPUX86State
*env
, uint32_t addr
);
203 int cpu_x86_handle_mmu_fault(CPUX86State
*env
, target_ulong addr
,
204 int is_write
, int is_user
, int is_softmmu
);
205 void tlb_fill(target_ulong addr
, int is_write
, int is_user
,
207 void __hidden
cpu_lock(void);
208 void __hidden
cpu_unlock(void);
209 void do_interrupt(int intno
, int is_int
, int error_code
,
210 target_ulong next_eip
, int is_hw
);
211 void do_interrupt_user(int intno
, int is_int
, int error_code
,
212 target_ulong next_eip
);
213 void raise_interrupt(int intno
, int is_int
, int error_code
,
214 int next_eip_addend
);
215 void raise_exception_err(int exception_index
, int error_code
);
216 void raise_exception(int exception_index
);
217 void __hidden
cpu_loop_exit(void);
219 void OPPROTO
op_movl_eflags_T0(void);
220 void OPPROTO
op_movl_T0_eflags(void);
221 void helper_divl_EAX_T0(void);
222 void helper_idivl_EAX_T0(void);
223 void helper_mulq_EAX_T0(void);
224 void helper_imulq_EAX_T0(void);
225 void helper_imulq_T0_T1(void);
226 void helper_divq_EAX_T0(void);
227 void helper_idivq_EAX_T0(void);
228 void helper_cmpxchg8b(void);
229 void helper_cpuid(void);
230 void helper_enter_level(int level
, int data32
);
231 void helper_sysenter(void);
232 void helper_sysexit(void);
233 void helper_syscall(int next_eip_addend
);
234 void helper_sysret(int dflag
);
235 void helper_rdtsc(void);
236 void helper_rdmsr(void);
237 void helper_wrmsr(void);
238 void helper_lsl(void);
239 void helper_lar(void);
240 void helper_verr(void);
241 void helper_verw(void);
243 void check_iob_T0(void);
244 void check_iow_T0(void);
245 void check_iol_T0(void);
246 void check_iob_DX(void);
247 void check_iow_DX(void);
248 void check_iol_DX(void);
250 /* XXX: move that to a generic header */
251 #if !defined(CONFIG_USER_ONLY)
253 #define ldul_user ldl_user
254 #define ldul_kernel ldl_kernel
256 #define ACCESS_TYPE 0
257 #define MEMSUFFIX _kernel
259 #include "softmmu_header.h"
262 #include "softmmu_header.h"
265 #include "softmmu_header.h"
268 #include "softmmu_header.h"
272 #define ACCESS_TYPE 1
273 #define MEMSUFFIX _user
275 #include "softmmu_header.h"
278 #include "softmmu_header.h"
281 #include "softmmu_header.h"
284 #include "softmmu_header.h"
288 /* these access are slower, they must be as rare as possible */
289 #define ACCESS_TYPE 2
290 #define MEMSUFFIX _data
292 #include "softmmu_header.h"
295 #include "softmmu_header.h"
298 #include "softmmu_header.h"
301 #include "softmmu_header.h"
305 #define ldub(p) ldub_data(p)
306 #define ldsb(p) ldsb_data(p)
307 #define lduw(p) lduw_data(p)
308 #define ldsw(p) ldsw_data(p)
309 #define ldl(p) ldl_data(p)
310 #define ldq(p) ldq_data(p)
312 #define stb(p, v) stb_data(p, v)
313 #define stw(p, v) stw_data(p, v)
314 #define stl(p, v) stl_data(p, v)
315 #define stq(p, v) stq_data(p, v)
317 static inline double ldfq(target_ulong ptr
)
327 static inline void stfq(target_ulong ptr
, double v
)
337 static inline float ldfl(target_ulong ptr
)
347 static inline void stfl(target_ulong ptr
, float v
)
357 #endif /* !defined(CONFIG_USER_ONLY) */
359 #ifdef USE_X86LDOUBLE
360 /* use long double functions */
362 #define llrint llrintl
377 extern int lrint(CPU86_LDouble x
);
378 extern int64_t llrint(CPU86_LDouble x
);
380 #define lrint(d) ((int)rint(d))
381 #define llrint(d) ((int)rint(d))
383 extern CPU86_LDouble
fabs(CPU86_LDouble x
);
384 extern CPU86_LDouble
sin(CPU86_LDouble x
);
385 extern CPU86_LDouble
cos(CPU86_LDouble x
);
386 extern CPU86_LDouble
sqrt(CPU86_LDouble x
);
387 extern CPU86_LDouble
pow(CPU86_LDouble
, CPU86_LDouble
);
388 extern CPU86_LDouble
log(CPU86_LDouble x
);
389 extern CPU86_LDouble
tan(CPU86_LDouble x
);
390 extern CPU86_LDouble
atan2(CPU86_LDouble
, CPU86_LDouble
);
391 extern CPU86_LDouble
floor(CPU86_LDouble x
);
392 extern CPU86_LDouble
ceil(CPU86_LDouble x
);
393 extern CPU86_LDouble
rint(CPU86_LDouble x
);
395 #define RC_MASK 0xc00
396 #define RC_NEAR 0x000
397 #define RC_DOWN 0x400
399 #define RC_CHOP 0xc00
401 #define MAXTAN 9223372036854775808.0
404 /* we have no way to do correct rounding - a FPU emulator is needed */
405 #define FE_DOWNWARD FE_TONEAREST
406 #define FE_UPWARD FE_TONEAREST
407 #define FE_TOWARDZERO FE_TONEAREST
410 #ifdef USE_X86LDOUBLE
416 unsigned long long lower
;
417 unsigned short upper
;
421 /* the following deal with x86 long double-precision numbers */
422 #define MAXEXPD 0x7fff
423 #define EXPBIAS 16383
424 #define EXPD(fp) (fp.l.upper & 0x7fff)
425 #define SIGND(fp) ((fp.l.upper) & 0x8000)
426 #define MANTD(fp) (fp.l.lower)
427 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
431 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
434 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
450 /* the following deal with IEEE double-precision numbers */
451 #define MAXEXPD 0x7ff
453 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
454 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
456 #define MANTD(fp) (fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32))
458 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
460 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
463 static inline void fpush(void)
465 env
->fpstt
= (env
->fpstt
- 1) & 7;
466 env
->fptags
[env
->fpstt
] = 0; /* validate stack entry */
469 static inline void fpop(void)
471 env
->fptags
[env
->fpstt
] = 1; /* invvalidate stack entry */
472 env
->fpstt
= (env
->fpstt
+ 1) & 7;
475 #ifndef USE_X86LDOUBLE
476 static inline CPU86_LDouble
helper_fldt(target_ulong ptr
)
483 upper
= lduw(ptr
+ 8);
484 /* XXX: handle overflow ? */
485 e
= (upper
& 0x7fff) - 16383 + EXPBIAS
; /* exponent */
486 e
|= (upper
>> 4) & 0x800; /* sign */
487 ll
= (ldq(ptr
) >> 11) & ((1LL << 52) - 1);
489 temp
.l
.upper
= (e
<< 20) | (ll
>> 32);
492 temp
.ll
= ll
| ((uint64_t)e
<< 52);
497 static inline void helper_fstt(CPU86_LDouble f
, target_ulong ptr
)
504 stq(ptr
, (MANTD(temp
) << 11) | (1LL << 63));
505 /* exponent + sign */
506 e
= EXPD(temp
) - EXPBIAS
+ 16383;
507 e
|= SIGND(temp
) >> 16;
512 /* XXX: same endianness assumed */
514 #ifdef CONFIG_USER_ONLY
516 static inline CPU86_LDouble
helper_fldt(target_ulong ptr
)
518 return *(CPU86_LDouble
*)ptr
;
521 static inline void helper_fstt(CPU86_LDouble f
, target_ulong ptr
)
523 *(CPU86_LDouble
*)ptr
= f
;
528 /* we use memory access macros */
530 static inline CPU86_LDouble
helper_fldt(target_ulong ptr
)
534 temp
.l
.lower
= ldq(ptr
);
535 temp
.l
.upper
= lduw(ptr
+ 8);
539 static inline void helper_fstt(CPU86_LDouble f
, target_ulong ptr
)
544 stq(ptr
, temp
.l
.lower
);
545 stw(ptr
+ 8, temp
.l
.upper
);
548 #endif /* !CONFIG_USER_ONLY */
550 #endif /* USE_X86LDOUBLE */
552 #define FPUS_IE (1 << 0)
553 #define FPUS_DE (1 << 1)
554 #define FPUS_ZE (1 << 2)
555 #define FPUS_OE (1 << 3)
556 #define FPUS_UE (1 << 4)
557 #define FPUS_PE (1 << 5)
558 #define FPUS_SF (1 << 6)
559 #define FPUS_SE (1 << 7)
560 #define FPUS_B (1 << 15)
564 extern const CPU86_LDouble f15rk
[7];
566 void helper_fldt_ST0_A0(void);
567 void helper_fstt_ST0_A0(void);
568 void fpu_raise_exception(void);
569 CPU86_LDouble
helper_fdiv(CPU86_LDouble a
, CPU86_LDouble b
);
570 void helper_fbld_ST0_A0(void);
571 void helper_fbst_ST0_A0(void);
572 void helper_f2xm1(void);
573 void helper_fyl2x(void);
574 void helper_fptan(void);
575 void helper_fpatan(void);
576 void helper_fxtract(void);
577 void helper_fprem1(void);
578 void helper_fprem(void);
579 void helper_fyl2xp1(void);
580 void helper_fsqrt(void);
581 void helper_fsincos(void);
582 void helper_frndint(void);
583 void helper_fscale(void);
584 void helper_fsin(void);
585 void helper_fcos(void);
586 void helper_fxam_ST0(void);
587 void helper_fstenv(target_ulong ptr
, int data32
);
588 void helper_fldenv(target_ulong ptr
, int data32
);
589 void helper_fsave(target_ulong ptr
, int data32
);
590 void helper_frstor(target_ulong ptr
, int data32
);
591 void helper_fxsave(target_ulong ptr
, int data64
);
592 void helper_fxrstor(target_ulong ptr
, int data64
);
593 void restore_native_fp_state(CPUState
*env
);
594 void save_native_fp_state(CPUState
*env
);
595 float approx_rsqrt(float a
);
596 float approx_rcp(float a
);
597 double helper_sqrt(double a
);
598 int fpu_isnan(double a
);
600 extern const uint8_t parity_table
[256];
601 extern const uint8_t rclw_table
[32];
602 extern const uint8_t rclb_table
[32];
604 static inline uint32_t compute_eflags(void)
606 return env
->eflags
| cc_table
[CC_OP
].compute_all() | (DF
& DF_MASK
);
609 /* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */
610 static inline void load_eflags(int eflags
, int update_mask
)
612 CC_SRC
= eflags
& (CC_O
| CC_S
| CC_Z
| CC_A
| CC_P
| CC_C
);
613 DF
= 1 - (2 * ((eflags
>> 10) & 1));
614 env
->eflags
= (env
->eflags
& ~update_mask
) |
615 (eflags
& update_mask
);
618 static inline void env_to_regs(void)
621 EAX
= env
->regs
[R_EAX
];
624 ECX
= env
->regs
[R_ECX
];
627 EDX
= env
->regs
[R_EDX
];
630 EBX
= env
->regs
[R_EBX
];
633 ESP
= env
->regs
[R_ESP
];
636 EBP
= env
->regs
[R_EBP
];
639 ESI
= env
->regs
[R_ESI
];
642 EDI
= env
->regs
[R_EDI
];
646 static inline void regs_to_env(void)
649 env
->regs
[R_EAX
] = EAX
;
652 env
->regs
[R_ECX
] = ECX
;
655 env
->regs
[R_EDX
] = EDX
;
658 env
->regs
[R_EBX
] = EBX
;
661 env
->regs
[R_ESP
] = ESP
;
664 env
->regs
[R_EBP
] = EBP
;
667 env
->regs
[R_ESI
] = ESI
;
670 env
->regs
[R_EDI
] = EDI
;