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 #ifndef CPU_NO_GLOBAL_REGS
37 #if TARGET_LONG_BITS > HOST_LONG_BITS
39 /* no registers can be used */
46 /* XXX: use unsigned long instead of target_ulong - better code will
47 be generated for 64 bit CPUs */
48 register target_ulong T0 asm(AREG1);
49 register target_ulong T1 asm(AREG2);
50 register target_ulong T2 asm(AREG3);
52 #endif /* ! (TARGET_LONG_BITS > HOST_LONG_BITS) */
54 #endif /* ! CPU_NO_GLOBAL_REGS */
62 #define EAX (env->regs[R_EAX])
65 #define ECX (env->regs[R_ECX])
68 #define EDX (env->regs[R_EDX])
71 #define EBX (env->regs[R_EBX])
74 #define ESP (env->regs[R_ESP])
77 #define EBP (env->regs[R_EBP])
80 #define ESI (env->regs[R_ESI])
83 #define EDI (env->regs[R_EDI])
85 #define EIP (env->eip)
88 #define CC_SRC (env->cc_src)
89 #define CC_DST (env->cc_dst)
90 #define CC_OP (env->cc_op)
93 #define FT0 (env->ft0)
94 #define ST0 (env->fpregs[env->fpstt].d)
95 #define ST(n) (env->fpregs[(env->fpstt + (n)) & 7].d)
101 typedef struct CCTable {
102 int (*compute_all)(void); /* return all the flags */
103 int (*compute_c)(void); /* return the C flag */
106 extern CCTable cc_table[];
108 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
109 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3);
110 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4);
111 void cpu_x86_flush_tlb(CPUX86State *env, target_ulong addr);
112 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
113 int is_write, int mmu_idx, int is_softmmu);
114 void tlb_fill(target_ulong addr, int is_write, int mmu_idx,
116 void __hidden cpu_lock(void);
117 void __hidden cpu_unlock(void);
118 void do_interrupt(int intno, int is_int, int error_code,
119 target_ulong next_eip, int is_hw);
120 void do_interrupt_user(int intno, int is_int, int error_code,
121 target_ulong next_eip);
122 void raise_interrupt(int intno, int is_int, int error_code,
123 int next_eip_addend);
124 void raise_exception_err(int exception_index, int error_code);
125 void raise_exception(int exception_index);
126 void do_smm_enter(void);
127 void __hidden cpu_loop_exit(void);
129 void OPPROTO op_movl_eflags_T0(void);
130 void OPPROTO op_movl_T0_eflags(void);
134 static inline void svm_check_intercept(uint32_t type)
136 helper_svm_check_intercept_param(type, 0);
139 #if !defined(CONFIG_USER_ONLY)
141 #include "softmmu_exec.h"
143 #endif /* !defined(CONFIG_USER_ONLY) */
145 #ifdef USE_X86LDOUBLE
146 /* use long double functions */
147 #define floatx_to_int32 floatx80_to_int32
148 #define floatx_to_int64 floatx80_to_int64
149 #define floatx_to_int32_round_to_zero floatx80_to_int32_round_to_zero
150 #define floatx_to_int64_round_to_zero floatx80_to_int64_round_to_zero
151 #define int32_to_floatx int32_to_floatx80
152 #define int64_to_floatx int64_to_floatx80
153 #define float32_to_floatx float32_to_floatx80
154 #define float64_to_floatx float64_to_floatx80
155 #define floatx_to_float32 floatx80_to_float32
156 #define floatx_to_float64 floatx80_to_float64
157 #define floatx_abs floatx80_abs
158 #define floatx_chs floatx80_chs
159 #define floatx_round_to_int floatx80_round_to_int
160 #define floatx_compare floatx80_compare
161 #define floatx_compare_quiet floatx80_compare_quiet
173 #define floatx_to_int32 float64_to_int32
174 #define floatx_to_int64 float64_to_int64
175 #define floatx_to_int32_round_to_zero float64_to_int32_round_to_zero
176 #define floatx_to_int64_round_to_zero float64_to_int64_round_to_zero
177 #define int32_to_floatx int32_to_float64
178 #define int64_to_floatx int64_to_float64
179 #define float32_to_floatx float32_to_float64
180 #define float64_to_floatx(x, e) (x)
181 #define floatx_to_float32 float64_to_float32
182 #define floatx_to_float64(x, e) (x)
183 #define floatx_abs float64_abs
184 #define floatx_chs float64_chs
185 #define floatx_round_to_int float64_round_to_int
186 #define floatx_compare float64_compare
187 #define floatx_compare_quiet float64_compare_quiet
190 extern CPU86_LDouble sin(CPU86_LDouble x);
191 extern CPU86_LDouble cos(CPU86_LDouble x);
192 extern CPU86_LDouble sqrt(CPU86_LDouble x);
193 extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
194 extern CPU86_LDouble log(CPU86_LDouble x);
195 extern CPU86_LDouble tan(CPU86_LDouble x);
196 extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
197 extern CPU86_LDouble floor(CPU86_LDouble x);
198 extern CPU86_LDouble ceil(CPU86_LDouble x);
200 #define RC_MASK 0xc00
201 #define RC_NEAR 0x000
202 #define RC_DOWN 0x400
204 #define RC_CHOP 0xc00
206 #define MAXTAN 9223372036854775808.0
208 #ifdef USE_X86LDOUBLE
214 unsigned long long lower;
215 unsigned short upper;
219 /* the following deal with x86 long double-precision numbers */
220 #define MAXEXPD 0x7fff
221 #define EXPBIAS 16383
222 #define EXPD(fp) (fp.l.upper & 0x7fff)
223 #define SIGND(fp) ((fp.l.upper) & 0x8000)
224 #define MANTD(fp) (fp.l.lower)
225 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
229 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
232 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
248 /* the following deal with IEEE double-precision numbers */
249 #define MAXEXPD 0x7ff
251 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
252 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
254 #define MANTD(fp) (fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32))
256 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
258 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
261 static inline void fpush(void)
263 env->fpstt = (env->fpstt - 1) & 7;
264 env->fptags[env->fpstt] = 0; /* validate stack entry */
267 static inline void fpop(void)
269 env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
270 env->fpstt = (env->fpstt + 1) & 7;
273 #ifndef USE_X86LDOUBLE
274 static inline CPU86_LDouble helper_fldt(target_ulong ptr)
281 upper = lduw(ptr + 8);
282 /* XXX: handle overflow ? */
283 e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
284 e |= (upper >> 4) & 0x800; /* sign */
285 ll = (ldq(ptr) >> 11) & ((1LL << 52) - 1);
287 temp.l.upper = (e << 20) | (ll >> 32);
290 temp.ll = ll | ((uint64_t)e << 52);
295 static inline void helper_fstt(CPU86_LDouble f, target_ulong ptr)
302 stq(ptr, (MANTD(temp) << 11) | (1LL << 63));
303 /* exponent + sign */
304 e = EXPD(temp) - EXPBIAS + 16383;
305 e |= SIGND(temp) >> 16;
310 /* we use memory access macros */
312 static inline CPU86_LDouble helper_fldt(target_ulong ptr)
316 temp.l.lower = ldq(ptr);
317 temp.l.upper = lduw(ptr + 8);
321 static inline void helper_fstt(CPU86_LDouble f, target_ulong ptr)
326 stq(ptr, temp.l.lower);
327 stw(ptr + 8, temp.l.upper);
330 #endif /* USE_X86LDOUBLE */
332 #define FPUS_IE (1 << 0)
333 #define FPUS_DE (1 << 1)
334 #define FPUS_ZE (1 << 2)
335 #define FPUS_OE (1 << 3)
336 #define FPUS_UE (1 << 4)
337 #define FPUS_PE (1 << 5)
338 #define FPUS_SF (1 << 6)
339 #define FPUS_SE (1 << 7)
340 #define FPUS_B (1 << 15)
344 extern const CPU86_LDouble f15rk[7];
346 void fpu_raise_exception(void);
347 void restore_native_fp_state(CPUState *env);
348 void save_native_fp_state(CPUState *env);
350 extern const uint8_t parity_table[256];
351 extern const uint8_t rclw_table[32];
352 extern const uint8_t rclb_table[32];
354 static inline uint32_t compute_eflags(void)
356 return env->eflags | cc_table[CC_OP].compute_all() | (DF & DF_MASK);
359 /* NOTE: CC_OP must be modified manually to CC_OP_EFLAGS */
360 static inline void load_eflags(int eflags, int update_mask)
362 CC_SRC = eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C);
363 DF = 1 - (2 * ((eflags >> 10) & 1));
364 env->eflags = (env->eflags & ~update_mask) |
365 (eflags & update_mask);
368 static inline void env_to_regs(void)
371 EAX = env->regs[R_EAX];
374 ECX = env->regs[R_ECX];
377 EDX = env->regs[R_EDX];
380 EBX = env->regs[R_EBX];
383 ESP = env->regs[R_ESP];
386 EBP = env->regs[R_EBP];
389 ESI = env->regs[R_ESI];
392 EDI = env->regs[R_EDI];
396 static inline void regs_to_env(void)
399 env->regs[R_EAX] = EAX;
402 env->regs[R_ECX] = ECX;
405 env->regs[R_EDX] = EDX;
408 env->regs[R_EBX] = EBX;
411 env->regs[R_ESP] = ESP;
414 env->regs[R_EBP] = EBP;
417 env->regs[R_ESI] = ESI;
420 env->regs[R_EDI] = EDI;
424 static inline int cpu_halted(CPUState *env) {
425 /* handle exit of HALTED state */
426 if (!(env->hflags & HF_HALTED_MASK))
428 /* disable halt condition */
429 if (((env->interrupt_request & CPU_INTERRUPT_HARD) &&
430 (env->eflags & IF_MASK)) ||
431 (env->interrupt_request & CPU_INTERRUPT_NMI)) {
432 env->hflags &= ~HF_HALTED_MASK;