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 /* at least 4 register variables are defined */
24 register struct CPUX86State *env asm(AREG0);
25 register uint32_t T0 asm(AREG1);
26 register uint32_t T1 asm(AREG2);
27 register uint32_t T2 asm(AREG3);
31 /* if more registers are available, we define some registers too */
33 register uint32_t EAX asm(AREG4);
38 register uint32_t ESP asm(AREG5);
43 register uint32_t EBP asm(AREG6);
48 register uint32_t ECX asm(AREG7);
53 register uint32_t EDX asm(AREG8);
58 register uint32_t EBX asm(AREG9);
63 register uint32_t ESI asm(AREG10);
68 register uint32_t EDI asm(AREG11);
76 #define EAX (env->regs[R_EAX])
79 #define ECX (env->regs[R_ECX])
82 #define EDX (env->regs[R_EDX])
85 #define EBX (env->regs[R_EBX])
88 #define ESP (env->regs[R_ESP])
91 #define EBP (env->regs[R_EBP])
94 #define ESI (env->regs[R_ESI])
97 #define EDI (env->regs[R_EDI])
99 #define EIP (env->eip)
102 #define CC_SRC (env->cc_src)
103 #define CC_DST (env->cc_dst)
104 #define CC_OP (env->cc_op)
107 #define FT0 (env->ft0)
108 #define ST0 (env->fpregs[env->fpstt])
109 #define ST(n) (env->fpregs[(env->fpstt + (n)) & 7])
112 #ifdef USE_FP_CONVERT
113 #define FP_CONVERT (env->fp_convert)
117 #include "exec-all.h"
119 typedef struct CCTable {
120 int (*compute_all)(void); /* return all the flags */
121 int (*compute_c)(void); /* return the C flag */
124 extern CCTable cc_table[];
126 void load_seg(int seg_reg, int selector);
127 void helper_ljmp_protected_T0_T1(int next_eip);
128 void helper_lcall_real_T0_T1(int shift, int next_eip);
129 void helper_lcall_protected_T0_T1(int shift, int next_eip);
130 void helper_iret_real(int shift);
131 void helper_iret_protected(int shift, int next_eip);
132 void helper_lret_protected(int shift, int addend);
133 void helper_lldt_T0(void);
134 void helper_ltr_T0(void);
135 void helper_movl_crN_T0(int reg);
136 void helper_movl_drN_T0(int reg);
137 void helper_invlpg(unsigned int addr);
138 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
139 void cpu_x86_update_cr3(CPUX86State *env, uint32_t new_cr3);
140 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4);
141 void cpu_x86_flush_tlb(CPUX86State *env, uint32_t addr);
142 int cpu_x86_handle_mmu_fault(CPUX86State *env, uint32_t addr,
143 int is_write, int is_user, int is_softmmu);
144 void tlb_fill(unsigned long addr, int is_write, int is_user,
146 void __hidden cpu_lock(void);
147 void __hidden cpu_unlock(void);
148 void do_interrupt(int intno, int is_int, int error_code,
149 unsigned int next_eip, int is_hw);
150 void do_interrupt_user(int intno, int is_int, int error_code,
151 unsigned int next_eip);
152 void raise_interrupt(int intno, int is_int, int error_code,
153 unsigned int next_eip);
154 void raise_exception_err(int exception_index, int error_code);
155 void raise_exception(int exception_index);
156 void __hidden cpu_loop_exit(void);
157 void helper_fsave(uint8_t *ptr, int data32);
158 void helper_frstor(uint8_t *ptr, int data32);
160 void OPPROTO op_movl_eflags_T0(void);
161 void OPPROTO op_movl_T0_eflags(void);
162 void raise_interrupt(int intno, int is_int, int error_code,
163 unsigned int next_eip);
164 void raise_exception_err(int exception_index, int error_code);
165 void raise_exception(int exception_index);
166 void helper_divl_EAX_T0(uint32_t eip);
167 void helper_idivl_EAX_T0(uint32_t eip);
168 void helper_cmpxchg8b(void);
169 void helper_cpuid(void);
170 void helper_enter_level(int level, int data32);
171 void helper_sysenter(void);
172 void helper_sysexit(void);
173 void helper_rdtsc(void);
174 void helper_rdmsr(void);
175 void helper_wrmsr(void);
176 void helper_lsl(void);
177 void helper_lar(void);
178 void helper_verr(void);
179 void helper_verw(void);
181 void check_iob_T0(void);
182 void check_iow_T0(void);
183 void check_iol_T0(void);
184 void check_iob_DX(void);
185 void check_iow_DX(void);
186 void check_iol_DX(void);
188 /* XXX: move that to a generic header */
189 #if !defined(CONFIG_USER_ONLY)
191 #define ldul_user ldl_user
192 #define ldul_kernel ldl_kernel
194 #define ACCESS_TYPE 0
195 #define MEMSUFFIX _kernel
197 #include "softmmu_header.h"
200 #include "softmmu_header.h"
203 #include "softmmu_header.h"
206 #include "softmmu_header.h"
210 #define ACCESS_TYPE 1
211 #define MEMSUFFIX _user
213 #include "softmmu_header.h"
216 #include "softmmu_header.h"
219 #include "softmmu_header.h"
222 #include "softmmu_header.h"
226 /* these access are slower, they must be as rare as possible */
227 #define ACCESS_TYPE 2
228 #define MEMSUFFIX _data
230 #include "softmmu_header.h"
233 #include "softmmu_header.h"
236 #include "softmmu_header.h"
239 #include "softmmu_header.h"
243 #define ldub(p) ldub_data(p)
244 #define ldsb(p) ldsb_data(p)
245 #define lduw(p) lduw_data(p)
246 #define ldsw(p) ldsw_data(p)
247 #define ldl(p) ldl_data(p)
248 #define ldq(p) ldq_data(p)
250 #define stb(p, v) stb_data(p, v)
251 #define stw(p, v) stw_data(p, v)
252 #define stl(p, v) stl_data(p, v)
253 #define stq(p, v) stq_data(p, v)
255 static inline double ldfq(void *ptr)
265 static inline void stfq(void *ptr, double v)
275 static inline float ldfl(void *ptr)
285 static inline void stfl(void *ptr, float v)
295 #endif /* !defined(CONFIG_USER_ONLY) */
297 #ifdef USE_X86LDOUBLE
298 /* use long double functions */
300 #define llrint llrintl
315 extern int lrint(CPU86_LDouble x);
316 extern int64_t llrint(CPU86_LDouble x);
318 #define lrint(d) ((int)rint(d))
319 #define llrint(d) ((int)rint(d))
321 extern CPU86_LDouble fabs(CPU86_LDouble x);
322 extern CPU86_LDouble sin(CPU86_LDouble x);
323 extern CPU86_LDouble cos(CPU86_LDouble x);
324 extern CPU86_LDouble sqrt(CPU86_LDouble x);
325 extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
326 extern CPU86_LDouble log(CPU86_LDouble x);
327 extern CPU86_LDouble tan(CPU86_LDouble x);
328 extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
329 extern CPU86_LDouble floor(CPU86_LDouble x);
330 extern CPU86_LDouble ceil(CPU86_LDouble x);
331 extern CPU86_LDouble rint(CPU86_LDouble x);
333 #define RC_MASK 0xc00
334 #define RC_NEAR 0x000
335 #define RC_DOWN 0x400
337 #define RC_CHOP 0xc00
339 #define MAXTAN 9223372036854775808.0
342 /* we have no way to do correct rounding - a FPU emulator is needed */
343 #define FE_DOWNWARD FE_TONEAREST
344 #define FE_UPWARD FE_TONEAREST
345 #define FE_TOWARDZERO FE_TONEAREST
348 #ifdef USE_X86LDOUBLE
354 unsigned long long lower;
355 unsigned short upper;
359 /* the following deal with x86 long double-precision numbers */
360 #define MAXEXPD 0x7fff
361 #define EXPBIAS 16383
362 #define EXPD(fp) (fp.l.upper & 0x7fff)
363 #define SIGND(fp) ((fp.l.upper) & 0x8000)
364 #define MANTD(fp) (fp.l.lower)
365 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
369 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
372 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
388 /* the following deal with IEEE double-precision numbers */
389 #define MAXEXPD 0x7ff
391 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
392 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
394 #define MANTD(fp) (fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32))
396 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
398 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
401 static inline void fpush(void)
403 env->fpstt = (env->fpstt - 1) & 7;
404 env->fptags[env->fpstt] = 0; /* validate stack entry */
407 static inline void fpop(void)
409 env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
410 env->fpstt = (env->fpstt + 1) & 7;
413 #ifndef USE_X86LDOUBLE
414 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
421 upper = lduw(ptr + 8);
422 /* XXX: handle overflow ? */
423 e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
424 e |= (upper >> 4) & 0x800; /* sign */
425 ll = (ldq(ptr) >> 11) & ((1LL << 52) - 1);
427 temp.l.upper = (e << 20) | (ll >> 32);
430 temp.ll = ll | ((uint64_t)e << 52);
435 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
442 stq(ptr, (MANTD(temp) << 11) | (1LL << 63));
443 /* exponent + sign */
444 e = EXPD(temp) - EXPBIAS + 16383;
445 e |= SIGND(temp) >> 16;
450 /* XXX: same endianness assumed */
452 #ifdef CONFIG_USER_ONLY
454 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
456 return *(CPU86_LDouble *)ptr;
459 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
461 *(CPU86_LDouble *)ptr = f;
466 /* we use memory access macros */
468 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
472 temp.l.lower = ldq(ptr);
473 temp.l.upper = lduw(ptr + 8);
477 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
482 stq(ptr, temp.l.lower);
483 stw(ptr + 8, temp.l.upper);
486 #endif /* !CONFIG_USER_ONLY */
488 #endif /* USE_X86LDOUBLE */
490 #define FPUS_IE (1 << 0)
491 #define FPUS_DE (1 << 1)
492 #define FPUS_ZE (1 << 2)
493 #define FPUS_OE (1 << 3)
494 #define FPUS_UE (1 << 4)
495 #define FPUS_PE (1 << 5)
496 #define FPUS_SF (1 << 6)
497 #define FPUS_SE (1 << 7)
498 #define FPUS_B (1 << 15)
502 extern const CPU86_LDouble f15rk[7];
504 void helper_fldt_ST0_A0(void);
505 void helper_fstt_ST0_A0(void);
506 void fpu_raise_exception(void);
507 CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b);
508 void helper_fbld_ST0_A0(void);
509 void helper_fbst_ST0_A0(void);
510 void helper_f2xm1(void);
511 void helper_fyl2x(void);
512 void helper_fptan(void);
513 void helper_fpatan(void);
514 void helper_fxtract(void);
515 void helper_fprem1(void);
516 void helper_fprem(void);
517 void helper_fyl2xp1(void);
518 void helper_fsqrt(void);
519 void helper_fsincos(void);
520 void helper_frndint(void);
521 void helper_fscale(void);
522 void helper_fsin(void);
523 void helper_fcos(void);
524 void helper_fxam_ST0(void);
525 void helper_fstenv(uint8_t *ptr, int data32);
526 void helper_fldenv(uint8_t *ptr, int data32);
527 void helper_fsave(uint8_t *ptr, int data32);
528 void helper_frstor(uint8_t *ptr, int data32);
529 void restore_native_fp_state(CPUState *env);
530 void save_native_fp_state(CPUState *env);
532 extern const uint8_t parity_table[256];
533 extern const uint8_t rclw_table[32];
534 extern const uint8_t rclb_table[32];
536 static inline uint32_t compute_eflags(void)
538 return env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK);
541 /* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */
542 static inline void load_eflags(int eflags, int update_mask)
544 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
545 DF = 1 - (2 * ((eflags >> 10) & 1));
546 env->eflags = (env->eflags & ~update_mask) |
547 (eflags & update_mask);
550 static inline void env_to_regs(void)
553 EAX = env->regs[R_EAX];
556 ECX = env->regs[R_ECX];
559 EDX = env->regs[R_EDX];
562 EBX = env->regs[R_EBX];
565 ESP = env->regs[R_ESP];
568 EBP = env->regs[R_EBP];
571 ESI = env->regs[R_ESI];
574 EDI = env->regs[R_EDI];
578 static inline void regs_to_env(void)
581 env->regs[R_EAX] = EAX;
584 env->regs[R_ECX] = ECX;
587 env->regs[R_EDX] = EDX;
590 env->regs[R_EBX] = EBX;
593 env->regs[R_ESP] = ESP;
596 env->regs[R_EBP] = EBP;
599 env->regs[R_ESI] = ESI;
602 env->regs[R_EDI] = EDI;