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
20 #include "dyngen-exec.h"
22 /* at least 4 register variables are defines */
23 register struct CPUX86State *env asm(AREG0);
24 register uint32_t T0 asm(AREG1);
25 register uint32_t T1 asm(AREG2);
26 register uint32_t T2 asm(AREG3);
30 /* if more registers are available, we define some registers too */
32 register uint32_t EAX asm(AREG4);
37 register uint32_t ESP asm(AREG5);
42 register uint32_t EBP asm(AREG6);
47 register uint32_t ECX asm(AREG7);
52 register uint32_t EDX asm(AREG8);
57 register uint32_t EBX asm(AREG9);
62 register uint32_t ESI asm(AREG10);
67 register uint32_t EDI asm(AREG11);
75 #define EAX (env->regs[R_EAX])
78 #define ECX (env->regs[R_ECX])
81 #define EDX (env->regs[R_EDX])
84 #define EBX (env->regs[R_EBX])
87 #define ESP (env->regs[R_ESP])
90 #define EBP (env->regs[R_EBP])
93 #define ESI (env->regs[R_ESI])
96 #define EDI (env->regs[R_EDI])
98 #define EIP (env->eip)
101 #define CC_SRC (env->cc_src)
102 #define CC_DST (env->cc_dst)
103 #define CC_OP (env->cc_op)
106 #define FT0 (env->ft0)
107 #define ST0 (env->fpregs[env->fpstt])
108 #define ST(n) (env->fpregs[(env->fpstt + (n)) & 7])
111 #ifdef USE_FP_CONVERT
112 #define FP_CONVERT (env->fp_convert)
116 #include "exec-all.h"
118 typedef struct CCTable {
119 int (*compute_all)(void); /* return all the flags */
120 int (*compute_c)(void); /* return the C flag */
123 extern CCTable cc_table[];
125 void load_seg(int seg_reg, int selector);
126 void helper_ljmp_protected_T0_T1(void);
127 void helper_lcall_real_T0_T1(int shift, int next_eip);
128 void helper_lcall_protected_T0_T1(int shift, int next_eip);
129 void helper_iret_real(int shift);
130 void helper_iret_protected(int shift);
131 void helper_lret_protected(int shift, int addend);
132 void helper_lldt_T0(void);
133 void helper_ltr_T0(void);
134 void helper_movl_crN_T0(int reg);
135 void helper_movl_drN_T0(int reg);
136 void helper_invlpg(unsigned int addr);
137 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
138 void cpu_x86_update_cr3(CPUX86State *env, uint32_t new_cr3);
139 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4);
140 void cpu_x86_flush_tlb(CPUX86State *env, uint32_t addr);
141 int cpu_x86_handle_mmu_fault(CPUX86State *env, uint32_t addr,
142 int is_write, int is_user, int is_softmmu);
143 void tlb_fill(unsigned long addr, int is_write, int is_user,
145 void __hidden cpu_lock(void);
146 void __hidden cpu_unlock(void);
147 void do_interrupt(int intno, int is_int, int error_code,
148 unsigned int next_eip, int is_hw);
149 void do_interrupt_user(int intno, int is_int, int error_code,
150 unsigned int next_eip);
151 void raise_interrupt(int intno, int is_int, int error_code,
152 unsigned int next_eip);
153 void raise_exception_err(int exception_index, int error_code);
154 void raise_exception(int exception_index);
155 void __hidden cpu_loop_exit(void);
156 void helper_fsave(uint8_t *ptr, int data32);
157 void helper_frstor(uint8_t *ptr, int data32);
159 void OPPROTO op_movl_eflags_T0(void);
160 void OPPROTO op_movl_T0_eflags(void);
161 void raise_interrupt(int intno, int is_int, int error_code,
162 unsigned int next_eip);
163 void raise_exception_err(int exception_index, int error_code);
164 void raise_exception(int exception_index);
165 void helper_divl_EAX_T0(uint32_t eip);
166 void helper_idivl_EAX_T0(uint32_t eip);
167 void helper_cmpxchg8b(void);
168 void helper_cpuid(void);
169 void helper_rdtsc(void);
170 void helper_rdmsr(void);
171 void helper_wrmsr(void);
172 void helper_lsl(void);
173 void helper_lar(void);
174 void helper_verr(void);
175 void helper_verw(void);
177 void check_iob_T0(void);
178 void check_iow_T0(void);
179 void check_iol_T0(void);
180 void check_iob_DX(void);
181 void check_iow_DX(void);
182 void check_iol_DX(void);
184 /* XXX: move that to a generic header */
185 #if !defined(CONFIG_USER_ONLY)
187 #define ldul_user ldl_user
188 #define ldul_kernel ldl_kernel
190 #define ACCESS_TYPE 0
191 #define MEMSUFFIX _kernel
193 #include "softmmu_header.h"
196 #include "softmmu_header.h"
199 #include "softmmu_header.h"
202 #include "softmmu_header.h"
206 #define ACCESS_TYPE 1
207 #define MEMSUFFIX _user
209 #include "softmmu_header.h"
212 #include "softmmu_header.h"
215 #include "softmmu_header.h"
218 #include "softmmu_header.h"
222 /* these access are slower, they must be as rare as possible */
223 #define ACCESS_TYPE 2
224 #define MEMSUFFIX _data
226 #include "softmmu_header.h"
229 #include "softmmu_header.h"
232 #include "softmmu_header.h"
235 #include "softmmu_header.h"
239 #define ldub(p) ldub_data(p)
240 #define ldsb(p) ldsb_data(p)
241 #define lduw(p) lduw_data(p)
242 #define ldsw(p) ldsw_data(p)
243 #define ldl(p) ldl_data(p)
244 #define ldq(p) ldq_data(p)
246 #define stb(p, v) stb_data(p, v)
247 #define stw(p, v) stw_data(p, v)
248 #define stl(p, v) stl_data(p, v)
249 #define stq(p, v) stq_data(p, v)
251 static inline double ldfq(void *ptr)
261 static inline void stfq(void *ptr, double v)
271 static inline float ldfl(void *ptr)
281 static inline void stfl(void *ptr, float v)
291 #endif /* !defined(CONFIG_USER_ONLY) */
293 #ifdef USE_X86LDOUBLE
294 /* use long double functions */
296 #define llrint llrintl
310 extern int lrint(CPU86_LDouble x);
311 extern int64_t llrint(CPU86_LDouble x);
312 extern CPU86_LDouble fabs(CPU86_LDouble x);
313 extern CPU86_LDouble sin(CPU86_LDouble x);
314 extern CPU86_LDouble cos(CPU86_LDouble x);
315 extern CPU86_LDouble sqrt(CPU86_LDouble x);
316 extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
317 extern CPU86_LDouble log(CPU86_LDouble x);
318 extern CPU86_LDouble tan(CPU86_LDouble x);
319 extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
320 extern CPU86_LDouble floor(CPU86_LDouble x);
321 extern CPU86_LDouble ceil(CPU86_LDouble x);
322 extern CPU86_LDouble rint(CPU86_LDouble x);
324 #define RC_MASK 0xc00
325 #define RC_NEAR 0x000
326 #define RC_DOWN 0x400
328 #define RC_CHOP 0xc00
330 #define MAXTAN 9223372036854775808.0
333 /* we have no way to do correct rounding - a FPU emulator is needed */
334 #define FE_DOWNWARD FE_TONEAREST
335 #define FE_UPWARD FE_TONEAREST
336 #define FE_TOWARDZERO FE_TONEAREST
339 #ifdef USE_X86LDOUBLE
345 unsigned long long lower;
346 unsigned short upper;
350 /* the following deal with x86 long double-precision numbers */
351 #define MAXEXPD 0x7fff
352 #define EXPBIAS 16383
353 #define EXPD(fp) (fp.l.upper & 0x7fff)
354 #define SIGND(fp) ((fp.l.upper) & 0x8000)
355 #define MANTD(fp) (fp.l.lower)
356 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
360 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
363 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
379 /* the following deal with IEEE double-precision numbers */
380 #define MAXEXPD 0x7ff
382 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
383 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
385 #define MANTD(fp) (fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32))
387 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
389 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
392 static inline void fpush(void)
394 env->fpstt = (env->fpstt - 1) & 7;
395 env->fptags[env->fpstt] = 0; /* validate stack entry */
398 static inline void fpop(void)
400 env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
401 env->fpstt = (env->fpstt + 1) & 7;
404 #ifndef USE_X86LDOUBLE
405 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
412 upper = lduw(ptr + 8);
413 /* XXX: handle overflow ? */
414 e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
415 e |= (upper >> 4) & 0x800; /* sign */
416 ll = (ldq(ptr) >> 11) & ((1LL << 52) - 1);
418 temp.l.upper = (e << 20) | (ll >> 32);
421 temp.ll = ll | ((uint64_t)e << 52);
426 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
433 stq(ptr, (MANTD(temp) << 11) | (1LL << 63));
434 /* exponent + sign */
435 e = EXPD(temp) - EXPBIAS + 16383;
436 e |= SIGND(temp) >> 16;
441 /* XXX: same endianness assumed */
443 #ifdef CONFIG_USER_ONLY
445 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
447 return *(CPU86_LDouble *)ptr;
450 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
452 *(CPU86_LDouble *)ptr = f;
457 /* we use memory access macros */
459 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
463 temp.l.lower = ldq(ptr);
464 temp.l.upper = lduw(ptr + 8);
468 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
473 stq(ptr, temp.l.lower);
474 stw(ptr + 8, temp.l.upper);
477 #endif /* !CONFIG_USER_ONLY */
479 #endif /* USE_X86LDOUBLE */
481 const CPU86_LDouble f15rk[7];
483 void helper_fldt_ST0_A0(void);
484 void helper_fstt_ST0_A0(void);
485 void helper_fbld_ST0_A0(void);
486 void helper_fbst_ST0_A0(void);
487 void helper_f2xm1(void);
488 void helper_fyl2x(void);
489 void helper_fptan(void);
490 void helper_fpatan(void);
491 void helper_fxtract(void);
492 void helper_fprem1(void);
493 void helper_fprem(void);
494 void helper_fyl2xp1(void);
495 void helper_fsqrt(void);
496 void helper_fsincos(void);
497 void helper_frndint(void);
498 void helper_fscale(void);
499 void helper_fsin(void);
500 void helper_fcos(void);
501 void helper_fxam_ST0(void);
502 void helper_fstenv(uint8_t *ptr, int data32);
503 void helper_fldenv(uint8_t *ptr, int data32);
504 void helper_fsave(uint8_t *ptr, int data32);
505 void helper_frstor(uint8_t *ptr, int data32);
506 void restore_native_fp_state(CPUState *env);
507 void save_native_fp_state(CPUState *env);
509 const uint8_t parity_table[256];
510 const uint8_t rclw_table[32];
511 const uint8_t rclb_table[32];
513 static inline uint32_t compute_eflags(void)
515 return env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK);
518 /* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */
519 static inline void load_eflags(int eflags, int update_mask)
521 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
522 DF = 1 - (2 * ((eflags >> 10) & 1));
523 env->eflags = (env->eflags & ~update_mask) |
524 (eflags & update_mask);