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 typedef unsigned char uint8_t;
21 typedef unsigned short uint16_t;
22 typedef unsigned int uint32_t;
23 typedef unsigned long long uint64_t;
25 typedef signed char int8_t;
26 typedef signed short int16_t;
27 typedef signed int int32_t;
28 typedef signed long long int64_t;
34 (((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
35 (((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
36 (((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
37 (((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \
43 typedef struct FILE FILE;
46 extern int fprintf(FILE *, const char *, ...);
47 extern int printf(const char *, ...);
50 register unsigned int T0 asm("ebx");
51 register unsigned int T1 asm("esi");
52 register unsigned int A0 asm("edi");
53 register struct CPUX86State *env asm("ebp");
56 register unsigned int EAX asm("r16");
57 register unsigned int ECX asm("r17");
58 register unsigned int EDX asm("r18");
59 register unsigned int EBX asm("r19");
60 register unsigned int ESP asm("r20");
61 register unsigned int EBP asm("r21");
62 register unsigned int ESI asm("r22");
63 register unsigned int EDI asm("r23");
64 register unsigned int T0 asm("r24");
65 register unsigned int T1 asm("r25");
66 register unsigned int A0 asm("r26");
67 register struct CPUX86State *env asm("r27");
68 #define USE_INT_TO_FLOAT_HELPERS
69 #define BUGGY_GCC_DIV64
80 register unsigned int T0 asm("r4");
81 register unsigned int T1 asm("r5");
82 register unsigned int A0 asm("r6");
83 register struct CPUX86State *env asm("r7");
86 register unsigned int T0 asm("s0");
87 register unsigned int T1 asm("s1");
88 register unsigned int A0 asm("s2");
89 register struct CPUX86State *env asm("s3");
92 register unsigned int EAX asm("l0");
93 register unsigned int ECX asm("l1");
94 register unsigned int EDX asm("l2");
95 register unsigned int EBX asm("l3");
96 register unsigned int ESP asm("l4");
97 register unsigned int EBP asm("l5");
98 register unsigned int ESI asm("l6");
99 register unsigned int EDI asm("l7");
100 register unsigned int T0 asm("g1");
101 register unsigned int T1 asm("g2");
102 register unsigned int A0 asm("g3");
103 register struct CPUX86State *env asm("g6");
104 #define USE_FP_CONVERT
115 register unsigned int T0 asm("r7");
116 register unsigned int T1 asm("r8");
117 register unsigned int A0 asm("r9");
118 register struct CPUX86State *env asm("r10");
121 register unsigned int T0 asm("$9");
122 register unsigned int T1 asm("$10");
123 register unsigned int A0 asm("$11");
124 register unsigned int EAX asm("$12");
125 register unsigned int ESP asm("$13");
126 register unsigned int EBP asm("$14");
127 /* Note $15 is the frame pointer, so anything in op-i386.c that would
128 require a frame pointer, like alloca, would probably loose. */
129 register struct CPUX86State *env asm("$15");
135 register unsigned int T0 asm("r24");
136 register unsigned int T1 asm("r25");
137 register unsigned int A0 asm("r26");
138 register struct CPUX86State *env asm("r27");
141 /* force GCC to generate only one epilog at the end of the function */
142 #define FORCE_RET() asm volatile ("");
148 #define xglue(x, y) x ## y
149 #define glue(x, y) xglue(x, y)
152 #define EAX (env->regs[R_EAX])
155 #define ECX (env->regs[R_ECX])
158 #define EDX (env->regs[R_EDX])
161 #define EBX (env->regs[R_EBX])
164 #define ESP (env->regs[R_ESP])
167 #define EBP (env->regs[R_EBP])
170 #define ESI (env->regs[R_ESI])
173 #define EDI (env->regs[R_EDI])
175 #define EIP (env->eip)
178 #define CC_SRC (env->cc_src)
179 #define CC_DST (env->cc_dst)
180 #define CC_OP (env->cc_op)
183 #define FT0 (env->ft0)
184 #define ST0 (env->fpregs[env->fpstt])
185 #define ST(n) (env->fpregs[(env->fpstt + (n)) & 7])
188 #ifdef USE_FP_CONVERT
189 #define FP_CONVERT (env->fp_convert)
193 /* the symbols are considered non exported so a br immediate is generated */
194 #define __hidden __attribute__((visibility("hidden")))
200 /* Suggested by Richard Henderson. This will result in code like
201 ldah $0,__op_param1($29) !gprelhigh
202 lda $0,__op_param1($0) !gprellow
203 We can then conveniently change $29 to $31 and adapt the offsets to
204 emit the appropriate constant. */
205 extern int __op_param1 __hidden;
206 extern int __op_param2 __hidden;
207 extern int __op_param3 __hidden;
208 #define PARAM1 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param1)); _r; })
209 #define PARAM2 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param2)); _r; })
210 #define PARAM3 ({ int _r; asm("" : "=r"(_r) : "0" (&__op_param3)); _r; })
212 extern int __op_param1, __op_param2, __op_param3;
213 #define PARAM1 ((long)(&__op_param1))
214 #define PARAM2 ((long)(&__op_param2))
215 #define PARAM3 ((long)(&__op_param3))
217 extern int __op_jmp0, __op_jmp1;
219 #include "cpu-i386.h"
222 typedef struct CCTable {
223 int (*compute_all)(void); /* return all the flags */
224 int (*compute_c)(void); /* return the C flag */
227 extern CCTable cc_table[];
229 void load_seg(int seg_reg, int selector, unsigned cur_eip);
230 void __hidden cpu_lock(void);
231 void __hidden cpu_unlock(void);
232 void raise_interrupt(int intno, int is_int, int error_code,
233 unsigned int next_eip);
234 void raise_exception_err(int exception_index, int error_code);
235 void raise_exception(int exception_index);
236 void __hidden cpu_loop_exit(void);
237 void helper_fsave(uint8_t *ptr, int data32);
238 void helper_frstor(uint8_t *ptr, int data32);
240 void OPPROTO op_movl_eflags_T0(void);
241 void OPPROTO op_movl_T0_eflags(void);
242 void raise_interrupt(int intno, int is_int, int error_code,
243 unsigned int next_eip);
244 void raise_exception_err(int exception_index, int error_code);
245 void raise_exception(int exception_index);
246 void helper_divl_EAX_T0(uint32_t eip);
247 void helper_idivl_EAX_T0(uint32_t eip);
248 void helper_cmpxchg8b(void);
249 void helper_cpuid(void);
250 void helper_rdtsc(void);
251 void helper_lsl(void);
252 void helper_lar(void);
254 #ifdef USE_X86LDOUBLE
255 /* use long double functions */
257 #define llrint llrintl
271 extern int lrint(CPU86_LDouble x);
272 extern int64_t llrint(CPU86_LDouble x);
273 extern CPU86_LDouble fabs(CPU86_LDouble x);
274 extern CPU86_LDouble sin(CPU86_LDouble x);
275 extern CPU86_LDouble cos(CPU86_LDouble x);
276 extern CPU86_LDouble sqrt(CPU86_LDouble x);
277 extern CPU86_LDouble pow(CPU86_LDouble, CPU86_LDouble);
278 extern CPU86_LDouble log(CPU86_LDouble x);
279 extern CPU86_LDouble tan(CPU86_LDouble x);
280 extern CPU86_LDouble atan2(CPU86_LDouble, CPU86_LDouble);
281 extern CPU86_LDouble floor(CPU86_LDouble x);
282 extern CPU86_LDouble ceil(CPU86_LDouble x);
283 extern CPU86_LDouble rint(CPU86_LDouble x);
285 #define RC_MASK 0xc00
286 #define RC_NEAR 0x000
287 #define RC_DOWN 0x400
289 #define RC_CHOP 0xc00
291 #define MAXTAN 9223372036854775808.0
294 /* we have no way to do correct rounding - a FPU emulator is needed */
295 #define FE_DOWNWARD FE_TONEAREST
296 #define FE_UPWARD FE_TONEAREST
297 #define FE_TOWARDZERO FE_TONEAREST
300 #ifdef USE_X86LDOUBLE
306 unsigned long long lower;
307 unsigned short upper;
311 /* the following deal with x86 long double-precision numbers */
312 #define MAXEXPD 0x7fff
313 #define EXPBIAS 16383
314 #define EXPD(fp) (fp.l.upper & 0x7fff)
315 #define SIGND(fp) ((fp.l.upper) & 0x8000)
316 #define MANTD(fp) (fp.l.lower)
317 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7fff)) | EXPBIAS
321 /* NOTE: arm is horrible as double 32 bit words are stored in big endian ! */
324 #if !defined(WORDS_BIGENDIAN) && !defined(__arm__)
340 /* the following deal with IEEE double-precision numbers */
341 #define MAXEXPD 0x7ff
343 #define EXPD(fp) (((fp.l.upper) >> 20) & 0x7FF)
344 #define SIGND(fp) ((fp.l.upper) & 0x80000000)
346 #define MANTD(fp) (fp.l.lower | ((uint64_t)(fp.l.upper & ((1 << 20) - 1)) << 32))
348 #define MANTD(fp) (fp.ll & ((1LL << 52) - 1))
350 #define BIASEXPONENT(fp) fp.l.upper = (fp.l.upper & ~(0x7ff << 20)) | (EXPBIAS << 20)
353 static inline void fpush(void)
355 env->fpstt = (env->fpstt - 1) & 7;
356 env->fptags[env->fpstt] = 0; /* validate stack entry */
359 static inline void fpop(void)
361 env->fptags[env->fpstt] = 1; /* invvalidate stack entry */
362 env->fpstt = (env->fpstt + 1) & 7;
365 #ifndef USE_X86LDOUBLE
366 static inline CPU86_LDouble helper_fldt(uint8_t *ptr)
373 upper = lduw(ptr + 8);
374 /* XXX: handle overflow ? */
375 e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
376 e |= (upper >> 4) & 0x800; /* sign */
377 ll = (ldq(ptr) >> 11) & ((1LL << 52) - 1);
379 temp.l.upper = (e << 20) | (ll >> 32);
382 temp.ll = ll | ((uint64_t)e << 52);
387 static inline void helper_fstt(CPU86_LDouble f, uint8_t *ptr)
394 stq(ptr, (MANTD(temp) << 11) | (1LL << 63));
395 /* exponent + sign */
396 e = EXPD(temp) - EXPBIAS + 16383;
397 e |= SIGND(temp) >> 16;
402 const CPU86_LDouble f15rk[7];
404 void helper_fldt_ST0_A0(void);
405 void helper_fstt_ST0_A0(void);
406 void helper_fbld_ST0_A0(void);
407 void helper_fbst_ST0_A0(void);
408 void helper_f2xm1(void);
409 void helper_fyl2x(void);
410 void helper_fptan(void);
411 void helper_fpatan(void);
412 void helper_fxtract(void);
413 void helper_fprem1(void);
414 void helper_fprem(void);
415 void helper_fyl2xp1(void);
416 void helper_fsqrt(void);
417 void helper_fsincos(void);
418 void helper_frndint(void);
419 void helper_fscale(void);
420 void helper_fsin(void);
421 void helper_fcos(void);
422 void helper_fxam_ST0(void);
423 void helper_fstenv(uint8_t *ptr, int data32);
424 void helper_fldenv(uint8_t *ptr, int data32);
425 void helper_fsave(uint8_t *ptr, int data32);
426 void helper_frstor(uint8_t *ptr, int data32);