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
25 #define raise_exception_err(a, b)\
27 fprintf(logfile, "raise_exception line=%d\n", __LINE__);\
28 (raise_exception_err)(a, b);\
32 const uint8_t parity_table
[256] = {
33 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
34 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
35 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
36 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
37 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
38 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
39 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
40 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
41 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
42 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
43 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
44 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
45 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
46 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
47 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
48 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
49 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
50 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
51 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
52 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
53 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
54 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
55 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
56 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
57 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
58 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
59 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
60 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
61 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
62 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
63 CC_P
, 0, 0, CC_P
, 0, CC_P
, CC_P
, 0,
64 0, CC_P
, CC_P
, 0, CC_P
, 0, 0, CC_P
,
68 const uint8_t rclw_table
[32] = {
69 0, 1, 2, 3, 4, 5, 6, 7,
70 8, 9,10,11,12,13,14,15,
71 16, 0, 1, 2, 3, 4, 5, 6,
72 7, 8, 9,10,11,12,13,14,
76 const uint8_t rclb_table
[32] = {
77 0, 1, 2, 3, 4, 5, 6, 7,
78 8, 0, 1, 2, 3, 4, 5, 6,
79 7, 8, 0, 1, 2, 3, 4, 5,
80 6, 7, 8, 0, 1, 2, 3, 4,
83 const CPU86_LDouble f15rk
[7] =
85 0.00000000000000000000L,
86 1.00000000000000000000L,
87 3.14159265358979323851L, /*pi*/
88 0.30102999566398119523L, /*lg2*/
89 0.69314718055994530943L, /*ln2*/
90 1.44269504088896340739L, /*l2e*/
91 3.32192809488736234781L, /*l2t*/
96 spinlock_t global_cpu_lock
= SPIN_LOCK_UNLOCKED
;
100 spin_lock(&global_cpu_lock
);
103 void cpu_unlock(void)
105 spin_unlock(&global_cpu_lock
);
108 void cpu_loop_exit(void)
110 /* NOTE: the register at this point must be saved by hand because
111 longjmp restore them */
113 longjmp(env
->jmp_env
, 1);
116 /* return non zero if error */
117 static inline int load_segment(uint32_t *e1_ptr
, uint32_t *e2_ptr
,
128 index
= selector
& ~7;
129 if ((index
+ 7) > dt
->limit
)
131 ptr
= dt
->base
+ index
;
132 *e1_ptr
= ldl_kernel(ptr
);
133 *e2_ptr
= ldl_kernel(ptr
+ 4);
137 static inline unsigned int get_seg_limit(uint32_t e1
, uint32_t e2
)
140 limit
= (e1
& 0xffff) | (e2
& 0x000f0000);
141 if (e2
& DESC_G_MASK
)
142 limit
= (limit
<< 12) | 0xfff;
146 static inline uint32_t get_seg_base(uint32_t e1
, uint32_t e2
)
148 return ((e1
>> 16) | ((e2
& 0xff) << 16) | (e2
& 0xff000000));
151 static inline void load_seg_cache_raw_dt(SegmentCache
*sc
, uint32_t e1
, uint32_t e2
)
153 sc
->base
= get_seg_base(e1
, e2
);
154 sc
->limit
= get_seg_limit(e1
, e2
);
158 /* init the segment cache in vm86 mode. */
159 static inline void load_seg_vm(int seg
, int selector
)
162 cpu_x86_load_seg_cache(env
, seg
, selector
,
163 (selector
<< 4), 0xffff, 0);
166 static inline void get_ss_esp_from_tss(uint32_t *ss_ptr
,
167 uint32_t *esp_ptr
, int dpl
)
169 int type
, index
, shift
;
174 printf("TR: base=%p limit=%x\n", env
->tr
.base
, env
->tr
.limit
);
175 for(i
=0;i
<env
->tr
.limit
;i
++) {
176 printf("%02x ", env
->tr
.base
[i
]);
177 if ((i
& 7) == 7) printf("\n");
183 if (!(env
->tr
.flags
& DESC_P_MASK
))
184 cpu_abort(env
, "invalid tss");
185 type
= (env
->tr
.flags
>> DESC_TYPE_SHIFT
) & 0xf;
187 cpu_abort(env
, "invalid tss type");
189 index
= (dpl
* 4 + 2) << shift
;
190 if (index
+ (4 << shift
) - 1 > env
->tr
.limit
)
191 raise_exception_err(EXCP0A_TSS
, env
->tr
.selector
& 0xfffc);
193 *esp_ptr
= lduw_kernel(env
->tr
.base
+ index
);
194 *ss_ptr
= lduw_kernel(env
->tr
.base
+ index
+ 2);
196 *esp_ptr
= ldl_kernel(env
->tr
.base
+ index
);
197 *ss_ptr
= lduw_kernel(env
->tr
.base
+ index
+ 4);
201 /* XXX: merge with load_seg() */
202 static void tss_load_seg(int seg_reg
, int selector
)
207 if ((selector
& 0xfffc) != 0) {
208 if (load_segment(&e1
, &e2
, selector
) != 0)
209 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
210 if (!(e2
& DESC_S_MASK
))
211 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
213 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
214 cpl
= env
->hflags
& HF_CPL_MASK
;
215 if (seg_reg
== R_CS
) {
216 if (!(e2
& DESC_CS_MASK
))
217 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
219 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
220 if ((e2
& DESC_C_MASK
) && dpl
> rpl
)
221 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
223 } else if (seg_reg
== R_SS
) {
224 /* SS must be writable data */
225 if ((e2
& DESC_CS_MASK
) || !(e2
& DESC_W_MASK
))
226 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
227 if (dpl
!= cpl
|| dpl
!= rpl
)
228 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
230 /* not readable code */
231 if ((e2
& DESC_CS_MASK
) && !(e2
& DESC_R_MASK
))
232 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
233 /* if data or non conforming code, checks the rights */
234 if (((e2
>> DESC_TYPE_SHIFT
) & 0xf) < 12) {
235 if (dpl
< cpl
|| dpl
< rpl
)
236 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
239 if (!(e2
& DESC_P_MASK
))
240 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
241 cpu_x86_load_seg_cache(env
, seg_reg
, selector
,
242 get_seg_base(e1
, e2
),
243 get_seg_limit(e1
, e2
),
246 if (seg_reg
== R_SS
|| seg_reg
== R_CS
)
247 raise_exception_err(EXCP0A_TSS
, selector
& 0xfffc);
251 #define SWITCH_TSS_JMP 0
252 #define SWITCH_TSS_IRET 1
253 #define SWITCH_TSS_CALL 2
255 /* XXX: restore CPU state in registers (PowerPC case) */
256 static void switch_tss(int tss_selector
,
257 uint32_t e1
, uint32_t e2
, int source
,
260 int tss_limit
, tss_limit_max
, type
, old_tss_limit_max
, old_type
, v1
, v2
, i
;
261 target_ulong tss_base
;
262 uint32_t new_regs
[8], new_segs
[6];
263 uint32_t new_eflags
, new_eip
, new_cr3
, new_ldt
, new_trap
;
264 uint32_t old_eflags
, eflags_mask
;
269 type
= (e2
>> DESC_TYPE_SHIFT
) & 0xf;
271 if (loglevel
& CPU_LOG_PCALL
)
272 fprintf(logfile
, "switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector
, type
, source
);
275 /* if task gate, we read the TSS segment and we load it */
277 if (!(e2
& DESC_P_MASK
))
278 raise_exception_err(EXCP0B_NOSEG
, tss_selector
& 0xfffc);
279 tss_selector
= e1
>> 16;
280 if (tss_selector
& 4)
281 raise_exception_err(EXCP0A_TSS
, tss_selector
& 0xfffc);
282 if (load_segment(&e1
, &e2
, tss_selector
) != 0)
283 raise_exception_err(EXCP0D_GPF
, tss_selector
& 0xfffc);
284 if (e2
& DESC_S_MASK
)
285 raise_exception_err(EXCP0D_GPF
, tss_selector
& 0xfffc);
286 type
= (e2
>> DESC_TYPE_SHIFT
) & 0xf;
288 raise_exception_err(EXCP0D_GPF
, tss_selector
& 0xfffc);
291 if (!(e2
& DESC_P_MASK
))
292 raise_exception_err(EXCP0B_NOSEG
, tss_selector
& 0xfffc);
298 tss_limit
= get_seg_limit(e1
, e2
);
299 tss_base
= get_seg_base(e1
, e2
);
300 if ((tss_selector
& 4) != 0 ||
301 tss_limit
< tss_limit_max
)
302 raise_exception_err(EXCP0A_TSS
, tss_selector
& 0xfffc);
303 old_type
= (env
->tr
.flags
>> DESC_TYPE_SHIFT
) & 0xf;
305 old_tss_limit_max
= 103;
307 old_tss_limit_max
= 43;
309 /* read all the registers from the new TSS */
312 new_cr3
= ldl_kernel(tss_base
+ 0x1c);
313 new_eip
= ldl_kernel(tss_base
+ 0x20);
314 new_eflags
= ldl_kernel(tss_base
+ 0x24);
315 for(i
= 0; i
< 8; i
++)
316 new_regs
[i
] = ldl_kernel(tss_base
+ (0x28 + i
* 4));
317 for(i
= 0; i
< 6; i
++)
318 new_segs
[i
] = lduw_kernel(tss_base
+ (0x48 + i
* 4));
319 new_ldt
= lduw_kernel(tss_base
+ 0x60);
320 new_trap
= ldl_kernel(tss_base
+ 0x64);
324 new_eip
= lduw_kernel(tss_base
+ 0x0e);
325 new_eflags
= lduw_kernel(tss_base
+ 0x10);
326 for(i
= 0; i
< 8; i
++)
327 new_regs
[i
] = lduw_kernel(tss_base
+ (0x12 + i
* 2)) | 0xffff0000;
328 for(i
= 0; i
< 4; i
++)
329 new_segs
[i
] = lduw_kernel(tss_base
+ (0x22 + i
* 4));
330 new_ldt
= lduw_kernel(tss_base
+ 0x2a);
336 /* NOTE: we must avoid memory exceptions during the task switch,
337 so we make dummy accesses before */
338 /* XXX: it can still fail in some cases, so a bigger hack is
339 necessary to valid the TLB after having done the accesses */
341 v1
= ldub_kernel(env
->tr
.base
);
342 v2
= ldub(env
->tr
.base
+ old_tss_limit_max
);
343 stb_kernel(env
->tr
.base
, v1
);
344 stb_kernel(env
->tr
.base
+ old_tss_limit_max
, v2
);
346 /* clear busy bit (it is restartable) */
347 if (source
== SWITCH_TSS_JMP
|| source
== SWITCH_TSS_IRET
) {
350 ptr
= env
->gdt
.base
+ (env
->tr
.selector
& ~7);
351 e2
= ldl_kernel(ptr
+ 4);
352 e2
&= ~DESC_TSS_BUSY_MASK
;
353 stl_kernel(ptr
+ 4, e2
);
355 old_eflags
= compute_eflags();
356 if (source
== SWITCH_TSS_IRET
)
357 old_eflags
&= ~NT_MASK
;
359 /* save the current state in the old TSS */
362 stl_kernel(env
->tr
.base
+ 0x20, next_eip
);
363 stl_kernel(env
->tr
.base
+ 0x24, old_eflags
);
364 stl_kernel(env
->tr
.base
+ (0x28 + 0 * 4), EAX
);
365 stl_kernel(env
->tr
.base
+ (0x28 + 1 * 4), ECX
);
366 stl_kernel(env
->tr
.base
+ (0x28 + 2 * 4), EDX
);
367 stl_kernel(env
->tr
.base
+ (0x28 + 3 * 4), EBX
);
368 stl_kernel(env
->tr
.base
+ (0x28 + 4 * 4), ESP
);
369 stl_kernel(env
->tr
.base
+ (0x28 + 5 * 4), EBP
);
370 stl_kernel(env
->tr
.base
+ (0x28 + 6 * 4), ESI
);
371 stl_kernel(env
->tr
.base
+ (0x28 + 7 * 4), EDI
);
372 for(i
= 0; i
< 6; i
++)
373 stw_kernel(env
->tr
.base
+ (0x48 + i
* 4), env
->segs
[i
].selector
);
376 stw_kernel(env
->tr
.base
+ 0x0e, next_eip
);
377 stw_kernel(env
->tr
.base
+ 0x10, old_eflags
);
378 stw_kernel(env
->tr
.base
+ (0x12 + 0 * 2), EAX
);
379 stw_kernel(env
->tr
.base
+ (0x12 + 1 * 2), ECX
);
380 stw_kernel(env
->tr
.base
+ (0x12 + 2 * 2), EDX
);
381 stw_kernel(env
->tr
.base
+ (0x12 + 3 * 2), EBX
);
382 stw_kernel(env
->tr
.base
+ (0x12 + 4 * 2), ESP
);
383 stw_kernel(env
->tr
.base
+ (0x12 + 5 * 2), EBP
);
384 stw_kernel(env
->tr
.base
+ (0x12 + 6 * 2), ESI
);
385 stw_kernel(env
->tr
.base
+ (0x12 + 7 * 2), EDI
);
386 for(i
= 0; i
< 4; i
++)
387 stw_kernel(env
->tr
.base
+ (0x22 + i
* 4), env
->segs
[i
].selector
);
390 /* now if an exception occurs, it will occurs in the next task
393 if (source
== SWITCH_TSS_CALL
) {
394 stw_kernel(tss_base
, env
->tr
.selector
);
395 new_eflags
|= NT_MASK
;
399 if (source
== SWITCH_TSS_JMP
|| source
== SWITCH_TSS_CALL
) {
402 ptr
= env
->gdt
.base
+ (tss_selector
& ~7);
403 e2
= ldl_kernel(ptr
+ 4);
404 e2
|= DESC_TSS_BUSY_MASK
;
405 stl_kernel(ptr
+ 4, e2
);
408 /* set the new CPU state */
409 /* from this point, any exception which occurs can give problems */
410 env
->cr
[0] |= CR0_TS_MASK
;
411 env
->hflags
|= HF_TS_MASK
;
412 env
->tr
.selector
= tss_selector
;
413 env
->tr
.base
= tss_base
;
414 env
->tr
.limit
= tss_limit
;
415 env
->tr
.flags
= e2
& ~DESC_TSS_BUSY_MASK
;
417 if ((type
& 8) && (env
->cr
[0] & CR0_PG_MASK
)) {
418 cpu_x86_update_cr3(env
, new_cr3
);
421 /* load all registers without an exception, then reload them with
422 possible exception */
424 eflags_mask
= TF_MASK
| AC_MASK
| ID_MASK
|
425 IF_MASK
| IOPL_MASK
| VM_MASK
| RF_MASK
| NT_MASK
;
427 eflags_mask
&= 0xffff;
428 load_eflags(new_eflags
, eflags_mask
);
429 /* XXX: what to do in 16 bit case ? */
438 if (new_eflags
& VM_MASK
) {
439 for(i
= 0; i
< 6; i
++)
440 load_seg_vm(i
, new_segs
[i
]);
441 /* in vm86, CPL is always 3 */
442 cpu_x86_set_cpl(env
, 3);
444 /* CPL is set the RPL of CS */
445 cpu_x86_set_cpl(env
, new_segs
[R_CS
] & 3);
446 /* first just selectors as the rest may trigger exceptions */
447 for(i
= 0; i
< 6; i
++)
448 cpu_x86_load_seg_cache(env
, i
, new_segs
[i
], 0, 0, 0);
451 env
->ldt
.selector
= new_ldt
& ~4;
458 raise_exception_err(EXCP0A_TSS
, new_ldt
& 0xfffc);
460 if ((new_ldt
& 0xfffc) != 0) {
462 index
= new_ldt
& ~7;
463 if ((index
+ 7) > dt
->limit
)
464 raise_exception_err(EXCP0A_TSS
, new_ldt
& 0xfffc);
465 ptr
= dt
->base
+ index
;
466 e1
= ldl_kernel(ptr
);
467 e2
= ldl_kernel(ptr
+ 4);
468 if ((e2
& DESC_S_MASK
) || ((e2
>> DESC_TYPE_SHIFT
) & 0xf) != 2)
469 raise_exception_err(EXCP0A_TSS
, new_ldt
& 0xfffc);
470 if (!(e2
& DESC_P_MASK
))
471 raise_exception_err(EXCP0A_TSS
, new_ldt
& 0xfffc);
472 load_seg_cache_raw_dt(&env
->ldt
, e1
, e2
);
475 /* load the segments */
476 if (!(new_eflags
& VM_MASK
)) {
477 tss_load_seg(R_CS
, new_segs
[R_CS
]);
478 tss_load_seg(R_SS
, new_segs
[R_SS
]);
479 tss_load_seg(R_ES
, new_segs
[R_ES
]);
480 tss_load_seg(R_DS
, new_segs
[R_DS
]);
481 tss_load_seg(R_FS
, new_segs
[R_FS
]);
482 tss_load_seg(R_GS
, new_segs
[R_GS
]);
485 /* check that EIP is in the CS segment limits */
486 if (new_eip
> env
->segs
[R_CS
].limit
) {
487 /* XXX: different exception if CALL ? */
488 raise_exception_err(EXCP0D_GPF
, 0);
492 /* check if Port I/O is allowed in TSS */
493 static inline void check_io(int addr
, int size
)
495 int io_offset
, val
, mask
;
497 /* TSS must be a valid 32 bit one */
498 if (!(env
->tr
.flags
& DESC_P_MASK
) ||
499 ((env
->tr
.flags
>> DESC_TYPE_SHIFT
) & 0xf) != 9 ||
502 io_offset
= lduw_kernel(env
->tr
.base
+ 0x66);
503 io_offset
+= (addr
>> 3);
504 /* Note: the check needs two bytes */
505 if ((io_offset
+ 1) > env
->tr
.limit
)
507 val
= lduw_kernel(env
->tr
.base
+ io_offset
);
509 mask
= (1 << size
) - 1;
510 /* all bits must be zero to allow the I/O */
511 if ((val
& mask
) != 0) {
513 raise_exception_err(EXCP0D_GPF
, 0);
517 void check_iob_T0(void)
522 void check_iow_T0(void)
527 void check_iol_T0(void)
532 void check_iob_DX(void)
534 check_io(EDX
& 0xffff, 1);
537 void check_iow_DX(void)
539 check_io(EDX
& 0xffff, 2);
542 void check_iol_DX(void)
544 check_io(EDX
& 0xffff, 4);
547 static inline unsigned int get_sp_mask(unsigned int e2
)
549 if (e2
& DESC_B_MASK
)
555 /* XXX: add a is_user flag to have proper security support */
556 #define PUSHW(ssp, sp, sp_mask, val)\
559 stw_kernel((ssp) + (sp & (sp_mask)), (val));\
562 #define PUSHL(ssp, sp, sp_mask, val)\
565 stl_kernel((ssp) + (sp & (sp_mask)), (val));\
568 #define POPW(ssp, sp, sp_mask, val)\
570 val = lduw_kernel((ssp) + (sp & (sp_mask)));\
574 #define POPL(ssp, sp, sp_mask, val)\
576 val = (uint32_t)ldl_kernel((ssp) + (sp & (sp_mask)));\
580 /* protected mode interrupt */
581 static void do_interrupt_protected(int intno
, int is_int
, int error_code
,
582 unsigned int next_eip
, int is_hw
)
585 target_ulong ptr
, ssp
;
586 int type
, dpl
, selector
, ss_dpl
, cpl
, sp_mask
;
587 int has_error_code
, new_stack
, shift
;
588 uint32_t e1
, e2
, offset
, ss
, esp
, ss_e1
, ss_e2
;
592 if (!is_int
&& !is_hw
) {
611 if (intno
* 8 + 7 > dt
->limit
)
612 raise_exception_err(EXCP0D_GPF
, intno
* 8 + 2);
613 ptr
= dt
->base
+ intno
* 8;
614 e1
= ldl_kernel(ptr
);
615 e2
= ldl_kernel(ptr
+ 4);
616 /* check gate type */
617 type
= (e2
>> DESC_TYPE_SHIFT
) & 0x1f;
619 case 5: /* task gate */
620 /* must do that check here to return the correct error code */
621 if (!(e2
& DESC_P_MASK
))
622 raise_exception_err(EXCP0B_NOSEG
, intno
* 8 + 2);
623 switch_tss(intno
* 8, e1
, e2
, SWITCH_TSS_CALL
, old_eip
);
624 if (has_error_code
) {
626 /* push the error code */
627 shift
= (env
->segs
[R_CS
].flags
>> DESC_B_SHIFT
) & 1;
628 if (env
->segs
[R_SS
].flags
& DESC_B_MASK
)
632 esp
= (ESP
- (2 << shift
)) & mask
;
633 ssp
= env
->segs
[R_SS
].base
+ esp
;
635 stl_kernel(ssp
, error_code
);
637 stw_kernel(ssp
, error_code
);
638 ESP
= (esp
& mask
) | (ESP
& ~mask
);
641 case 6: /* 286 interrupt gate */
642 case 7: /* 286 trap gate */
643 case 14: /* 386 interrupt gate */
644 case 15: /* 386 trap gate */
647 raise_exception_err(EXCP0D_GPF
, intno
* 8 + 2);
650 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
651 cpl
= env
->hflags
& HF_CPL_MASK
;
652 /* check privledge if software int */
653 if (is_int
&& dpl
< cpl
)
654 raise_exception_err(EXCP0D_GPF
, intno
* 8 + 2);
655 /* check valid bit */
656 if (!(e2
& DESC_P_MASK
))
657 raise_exception_err(EXCP0B_NOSEG
, intno
* 8 + 2);
659 offset
= (e2
& 0xffff0000) | (e1
& 0x0000ffff);
660 if ((selector
& 0xfffc) == 0)
661 raise_exception_err(EXCP0D_GPF
, 0);
663 if (load_segment(&e1
, &e2
, selector
) != 0)
664 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
665 if (!(e2
& DESC_S_MASK
) || !(e2
& (DESC_CS_MASK
)))
666 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
667 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
669 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
670 if (!(e2
& DESC_P_MASK
))
671 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
672 if (!(e2
& DESC_C_MASK
) && dpl
< cpl
) {
673 /* to inner priviledge */
674 get_ss_esp_from_tss(&ss
, &esp
, dpl
);
675 if ((ss
& 0xfffc) == 0)
676 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
678 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
679 if (load_segment(&ss_e1
, &ss_e2
, ss
) != 0)
680 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
681 ss_dpl
= (ss_e2
>> DESC_DPL_SHIFT
) & 3;
683 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
684 if (!(ss_e2
& DESC_S_MASK
) ||
685 (ss_e2
& DESC_CS_MASK
) ||
686 !(ss_e2
& DESC_W_MASK
))
687 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
688 if (!(ss_e2
& DESC_P_MASK
))
689 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
691 sp_mask
= get_sp_mask(ss_e2
);
692 ssp
= get_seg_base(ss_e1
, ss_e2
);
693 } else if ((e2
& DESC_C_MASK
) || dpl
== cpl
) {
694 /* to same priviledge */
695 if (env
->eflags
& VM_MASK
)
696 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
698 sp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
699 ssp
= env
->segs
[R_SS
].base
;
703 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
704 new_stack
= 0; /* avoid warning */
705 sp_mask
= 0; /* avoid warning */
706 ssp
= 0; /* avoid warning */
707 esp
= 0; /* avoid warning */
713 /* XXX: check that enough room is available */
714 push_size
= 6 + (new_stack
<< 2) + (has_error_code
<< 1);
715 if (env
->eflags
& VM_MASK
)
721 if (env
->eflags
& VM_MASK
) {
722 PUSHL(ssp
, esp
, sp_mask
, env
->segs
[R_GS
].selector
);
723 PUSHL(ssp
, esp
, sp_mask
, env
->segs
[R_FS
].selector
);
724 PUSHL(ssp
, esp
, sp_mask
, env
->segs
[R_DS
].selector
);
725 PUSHL(ssp
, esp
, sp_mask
, env
->segs
[R_ES
].selector
);
727 PUSHL(ssp
, esp
, sp_mask
, env
->segs
[R_SS
].selector
);
728 PUSHL(ssp
, esp
, sp_mask
, ESP
);
730 PUSHL(ssp
, esp
, sp_mask
, compute_eflags());
731 PUSHL(ssp
, esp
, sp_mask
, env
->segs
[R_CS
].selector
);
732 PUSHL(ssp
, esp
, sp_mask
, old_eip
);
733 if (has_error_code
) {
734 PUSHL(ssp
, esp
, sp_mask
, error_code
);
738 if (env
->eflags
& VM_MASK
) {
739 PUSHW(ssp
, esp
, sp_mask
, env
->segs
[R_GS
].selector
);
740 PUSHW(ssp
, esp
, sp_mask
, env
->segs
[R_FS
].selector
);
741 PUSHW(ssp
, esp
, sp_mask
, env
->segs
[R_DS
].selector
);
742 PUSHW(ssp
, esp
, sp_mask
, env
->segs
[R_ES
].selector
);
744 PUSHW(ssp
, esp
, sp_mask
, env
->segs
[R_SS
].selector
);
745 PUSHW(ssp
, esp
, sp_mask
, ESP
);
747 PUSHW(ssp
, esp
, sp_mask
, compute_eflags());
748 PUSHW(ssp
, esp
, sp_mask
, env
->segs
[R_CS
].selector
);
749 PUSHW(ssp
, esp
, sp_mask
, old_eip
);
750 if (has_error_code
) {
751 PUSHW(ssp
, esp
, sp_mask
, error_code
);
756 if (env
->eflags
& VM_MASK
) {
757 cpu_x86_load_seg_cache(env
, R_ES
, 0, 0, 0, 0);
758 cpu_x86_load_seg_cache(env
, R_DS
, 0, 0, 0, 0);
759 cpu_x86_load_seg_cache(env
, R_FS
, 0, 0, 0, 0);
760 cpu_x86_load_seg_cache(env
, R_GS
, 0, 0, 0, 0);
762 ss
= (ss
& ~3) | dpl
;
763 cpu_x86_load_seg_cache(env
, R_SS
, ss
,
764 ssp
, get_seg_limit(ss_e1
, ss_e2
), ss_e2
);
766 ESP
= (ESP
& ~sp_mask
) | (esp
& sp_mask
);
768 selector
= (selector
& ~3) | dpl
;
769 cpu_x86_load_seg_cache(env
, R_CS
, selector
,
770 get_seg_base(e1
, e2
),
771 get_seg_limit(e1
, e2
),
773 cpu_x86_set_cpl(env
, dpl
);
776 /* interrupt gate clear IF mask */
777 if ((type
& 1) == 0) {
778 env
->eflags
&= ~IF_MASK
;
780 env
->eflags
&= ~(TF_MASK
| VM_MASK
| RF_MASK
| NT_MASK
);
785 #define PUSHQ(sp, val)\
788 stq_kernel(sp, (val));\
791 #define POPQ(sp, val)\
793 val = ldq_kernel(sp);\
797 static inline target_ulong
get_rsp_from_tss(int level
)
802 printf("TR: base=" TARGET_FMT_lx
" limit=%x\n",
803 env
->tr
.base
, env
->tr
.limit
);
806 if (!(env
->tr
.flags
& DESC_P_MASK
))
807 cpu_abort(env
, "invalid tss");
808 index
= 8 * level
+ 4;
809 if ((index
+ 7) > env
->tr
.limit
)
810 raise_exception_err(EXCP0A_TSS
, env
->tr
.selector
& 0xfffc);
811 return ldq_kernel(env
->tr
.base
+ index
);
814 /* 64 bit interrupt */
815 static void do_interrupt64(int intno
, int is_int
, int error_code
,
816 target_ulong next_eip
, int is_hw
)
820 int type
, dpl
, selector
, cpl
, ist
;
821 int has_error_code
, new_stack
;
822 uint32_t e1
, e2
, e3
, ss
;
823 target_ulong old_eip
, esp
, offset
;
826 if (!is_int
&& !is_hw
) {
845 if (intno
* 16 + 15 > dt
->limit
)
846 raise_exception_err(EXCP0D_GPF
, intno
* 16 + 2);
847 ptr
= dt
->base
+ intno
* 16;
848 e1
= ldl_kernel(ptr
);
849 e2
= ldl_kernel(ptr
+ 4);
850 e3
= ldl_kernel(ptr
+ 8);
851 /* check gate type */
852 type
= (e2
>> DESC_TYPE_SHIFT
) & 0x1f;
854 case 14: /* 386 interrupt gate */
855 case 15: /* 386 trap gate */
858 raise_exception_err(EXCP0D_GPF
, intno
* 16 + 2);
861 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
862 cpl
= env
->hflags
& HF_CPL_MASK
;
863 /* check privledge if software int */
864 if (is_int
&& dpl
< cpl
)
865 raise_exception_err(EXCP0D_GPF
, intno
* 16 + 2);
866 /* check valid bit */
867 if (!(e2
& DESC_P_MASK
))
868 raise_exception_err(EXCP0B_NOSEG
, intno
* 16 + 2);
870 offset
= ((target_ulong
)e3
<< 32) | (e2
& 0xffff0000) | (e1
& 0x0000ffff);
872 if ((selector
& 0xfffc) == 0)
873 raise_exception_err(EXCP0D_GPF
, 0);
875 if (load_segment(&e1
, &e2
, selector
) != 0)
876 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
877 if (!(e2
& DESC_S_MASK
) || !(e2
& (DESC_CS_MASK
)))
878 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
879 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
881 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
882 if (!(e2
& DESC_P_MASK
))
883 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
884 if (!(e2
& DESC_L_MASK
) || (e2
& DESC_B_MASK
))
885 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
886 if ((!(e2
& DESC_C_MASK
) && dpl
< cpl
) || ist
!= 0) {
887 /* to inner priviledge */
889 esp
= get_rsp_from_tss(ist
+ 3);
891 esp
= get_rsp_from_tss(dpl
);
894 } else if ((e2
& DESC_C_MASK
) || dpl
== cpl
) {
895 /* to same priviledge */
896 if (env
->eflags
& VM_MASK
)
897 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
899 esp
= ESP
& ~0xf; /* align stack */
902 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
903 new_stack
= 0; /* avoid warning */
904 esp
= 0; /* avoid warning */
907 PUSHQ(esp
, env
->segs
[R_SS
].selector
);
909 PUSHQ(esp
, compute_eflags());
910 PUSHQ(esp
, env
->segs
[R_CS
].selector
);
912 if (has_error_code
) {
913 PUSHQ(esp
, error_code
);
918 cpu_x86_load_seg_cache(env
, R_SS
, ss
, 0, 0, 0);
922 selector
= (selector
& ~3) | dpl
;
923 cpu_x86_load_seg_cache(env
, R_CS
, selector
,
924 get_seg_base(e1
, e2
),
925 get_seg_limit(e1
, e2
),
927 cpu_x86_set_cpl(env
, dpl
);
930 /* interrupt gate clear IF mask */
931 if ((type
& 1) == 0) {
932 env
->eflags
&= ~IF_MASK
;
934 env
->eflags
&= ~(TF_MASK
| VM_MASK
| RF_MASK
| NT_MASK
);
937 void helper_syscall(int next_eip_addend
)
941 if (!(env
->efer
& MSR_EFER_SCE
)) {
942 raise_exception_err(EXCP06_ILLOP
, 0);
944 selector
= (env
->star
>> 32) & 0xffff;
945 if (env
->hflags
& HF_LMA_MASK
) {
946 ECX
= env
->eip
+ next_eip_addend
;
947 env
->regs
[11] = compute_eflags();
949 cpu_x86_set_cpl(env
, 0);
950 cpu_x86_load_seg_cache(env
, R_CS
, selector
& 0xfffc,
952 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
954 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
| DESC_L_MASK
);
955 cpu_x86_load_seg_cache(env
, R_SS
, (selector
+ 8) & 0xfffc,
957 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
959 DESC_W_MASK
| DESC_A_MASK
);
960 env
->eflags
&= ~env
->fmask
;
961 if (env
->hflags
& HF_CS64_MASK
)
962 env
->eip
= env
->lstar
;
964 env
->eip
= env
->cstar
;
966 ECX
= (uint32_t)(env
->eip
+ next_eip_addend
);
968 cpu_x86_set_cpl(env
, 0);
969 cpu_x86_load_seg_cache(env
, R_CS
, selector
& 0xfffc,
971 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
973 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
);
974 cpu_x86_load_seg_cache(env
, R_SS
, (selector
+ 8) & 0xfffc,
976 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
978 DESC_W_MASK
| DESC_A_MASK
);
979 env
->eflags
&= ~(IF_MASK
| RF_MASK
| VM_MASK
);
980 env
->eip
= (uint32_t)env
->star
;
984 void helper_sysret(int dflag
)
988 cpl
= env
->hflags
& HF_CPL_MASK
;
989 if (!(env
->cr
[0] & CR0_PE_MASK
) || cpl
!= 0) {
990 raise_exception_err(EXCP0D_GPF
, 0);
992 selector
= (env
->star
>> 48) & 0xffff;
993 if (env
->hflags
& HF_LMA_MASK
) {
995 cpu_x86_load_seg_cache(env
, R_CS
, (selector
+ 16) | 3,
997 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
998 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
999 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
|
1003 cpu_x86_load_seg_cache(env
, R_CS
, selector
| 3,
1005 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
1006 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
1007 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
);
1008 env
->eip
= (uint32_t)ECX
;
1010 cpu_x86_load_seg_cache(env
, R_SS
, selector
+ 8,
1012 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
1013 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
1014 DESC_W_MASK
| DESC_A_MASK
);
1015 load_eflags((uint32_t)(env
->regs
[11]), TF_MASK
| AC_MASK
| ID_MASK
|
1016 IF_MASK
| IOPL_MASK
| VM_MASK
| RF_MASK
| NT_MASK
);
1017 cpu_x86_set_cpl(env
, 3);
1019 cpu_x86_load_seg_cache(env
, R_CS
, selector
| 3,
1021 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
1022 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
1023 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
);
1024 env
->eip
= (uint32_t)ECX
;
1025 cpu_x86_load_seg_cache(env
, R_SS
, selector
+ 8,
1027 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
1028 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
1029 DESC_W_MASK
| DESC_A_MASK
);
1030 env
->eflags
|= IF_MASK
;
1031 cpu_x86_set_cpl(env
, 3);
1036 /* real mode interrupt */
1037 static void do_interrupt_real(int intno
, int is_int
, int error_code
,
1038 unsigned int next_eip
)
1041 target_ulong ptr
, ssp
;
1043 uint32_t offset
, esp
;
1044 uint32_t old_cs
, old_eip
;
1046 /* real mode (simpler !) */
1048 if (intno
* 4 + 3 > dt
->limit
)
1049 raise_exception_err(EXCP0D_GPF
, intno
* 8 + 2);
1050 ptr
= dt
->base
+ intno
* 4;
1051 offset
= lduw_kernel(ptr
);
1052 selector
= lduw_kernel(ptr
+ 2);
1054 ssp
= env
->segs
[R_SS
].base
;
1059 old_cs
= env
->segs
[R_CS
].selector
;
1060 /* XXX: use SS segment size ? */
1061 PUSHW(ssp
, esp
, 0xffff, compute_eflags());
1062 PUSHW(ssp
, esp
, 0xffff, old_cs
);
1063 PUSHW(ssp
, esp
, 0xffff, old_eip
);
1065 /* update processor state */
1066 ESP
= (ESP
& ~0xffff) | (esp
& 0xffff);
1068 env
->segs
[R_CS
].selector
= selector
;
1069 env
->segs
[R_CS
].base
= (selector
<< 4);
1070 env
->eflags
&= ~(IF_MASK
| TF_MASK
| AC_MASK
| RF_MASK
);
1073 /* fake user mode interrupt */
1074 void do_interrupt_user(int intno
, int is_int
, int error_code
,
1075 target_ulong next_eip
)
1083 ptr
= dt
->base
+ (intno
* 8);
1084 e2
= ldl_kernel(ptr
+ 4);
1086 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1087 cpl
= env
->hflags
& HF_CPL_MASK
;
1088 /* check privledge if software int */
1089 if (is_int
&& dpl
< cpl
)
1090 raise_exception_err(EXCP0D_GPF
, intno
* 8 + 2);
1092 /* Since we emulate only user space, we cannot do more than
1093 exiting the emulation with the suitable exception and error
1100 * Begin execution of an interruption. is_int is TRUE if coming from
1101 * the int instruction. next_eip is the EIP value AFTER the interrupt
1102 * instruction. It is only relevant if is_int is TRUE.
1104 void do_interrupt(int intno
, int is_int
, int error_code
,
1105 target_ulong next_eip
, int is_hw
)
1108 if (loglevel
& (CPU_LOG_PCALL
| CPU_LOG_INT
)) {
1109 if ((env
->cr
[0] & CR0_PE_MASK
)) {
1111 fprintf(logfile
, "%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx
" pc=" TARGET_FMT_lx
" SP=%04x:" TARGET_FMT_lx
,
1112 count
, intno
, error_code
, is_int
,
1113 env
->hflags
& HF_CPL_MASK
,
1114 env
->segs
[R_CS
].selector
, EIP
,
1115 (int)env
->segs
[R_CS
].base
+ EIP
,
1116 env
->segs
[R_SS
].selector
, ESP
);
1117 if (intno
== 0x0e) {
1118 fprintf(logfile
, " CR2=" TARGET_FMT_lx
, env
->cr
[2]);
1120 fprintf(logfile
, " EAX=" TARGET_FMT_lx
, EAX
);
1122 fprintf(logfile
, "\n");
1124 cpu_dump_state(env
, logfile
, fprintf
, X86_DUMP_CCOP
);
1128 fprintf(logfile
, " code=");
1129 ptr
= env
->segs
[R_CS
].base
+ env
->eip
;
1130 for(i
= 0; i
< 16; i
++) {
1131 fprintf(logfile
, " %02x", ldub(ptr
+ i
));
1133 fprintf(logfile
, "\n");
1140 if (env
->cr
[0] & CR0_PE_MASK
) {
1142 if (env
->hflags
& HF_LMA_MASK
) {
1143 do_interrupt64(intno
, is_int
, error_code
, next_eip
, is_hw
);
1147 do_interrupt_protected(intno
, is_int
, error_code
, next_eip
, is_hw
);
1150 do_interrupt_real(intno
, is_int
, error_code
, next_eip
);
1155 * Signal an interruption. It is executed in the main CPU loop.
1156 * is_int is TRUE if coming from the int instruction. next_eip is the
1157 * EIP value AFTER the interrupt instruction. It is only relevant if
1160 void raise_interrupt(int intno
, int is_int
, int error_code
,
1161 int next_eip_addend
)
1163 env
->exception_index
= intno
;
1164 env
->error_code
= error_code
;
1165 env
->exception_is_int
= is_int
;
1166 env
->exception_next_eip
= env
->eip
+ next_eip_addend
;
1170 /* same as raise_exception_err, but do not restore global registers */
1171 static void raise_exception_err_norestore(int exception_index
, int error_code
)
1173 env
->exception_index
= exception_index
;
1174 env
->error_code
= error_code
;
1175 env
->exception_is_int
= 0;
1176 env
->exception_next_eip
= 0;
1177 longjmp(env
->jmp_env
, 1);
1180 /* shortcuts to generate exceptions */
1182 void (raise_exception_err
)(int exception_index
, int error_code
)
1184 raise_interrupt(exception_index
, 0, error_code
, 0);
1187 void raise_exception(int exception_index
)
1189 raise_interrupt(exception_index
, 0, 0, 0);
1192 #ifdef BUGGY_GCC_DIV64
1193 /* gcc 2.95.4 on PowerPC does not seem to like using __udivdi3, so we
1194 call it from another function */
1195 uint32_t div32(uint32_t *q_ptr
, uint64_t num
, uint32_t den
)
1201 int32_t idiv32(int32_t *q_ptr
, int64_t num
, int32_t den
)
1208 void helper_divl_EAX_T0(void)
1210 unsigned int den
, q
, r
;
1213 num
= ((uint32_t)EAX
) | ((uint64_t)((uint32_t)EDX
) << 32);
1216 raise_exception(EXCP00_DIVZ
);
1218 #ifdef BUGGY_GCC_DIV64
1219 r
= div32(&q
, num
, den
);
1228 void helper_idivl_EAX_T0(void)
1233 num
= ((uint32_t)EAX
) | ((uint64_t)((uint32_t)EDX
) << 32);
1236 raise_exception(EXCP00_DIVZ
);
1238 #ifdef BUGGY_GCC_DIV64
1239 r
= idiv32(&q
, num
, den
);
1248 void helper_cmpxchg8b(void)
1253 eflags
= cc_table
[CC_OP
].compute_all();
1255 if (d
== (((uint64_t)EDX
<< 32) | EAX
)) {
1256 stq(A0
, ((uint64_t)ECX
<< 32) | EBX
);
1266 void helper_cpuid(void)
1268 switch((uint32_t)EAX
) {
1270 EAX
= 2; /* max EAX index supported */
1271 EBX
= env
->cpuid_vendor1
;
1272 EDX
= env
->cpuid_vendor2
;
1273 ECX
= env
->cpuid_vendor3
;
1276 EAX
= env
->cpuid_version
;
1278 ECX
= env
->cpuid_ext_features
;
1279 EDX
= env
->cpuid_features
;
1282 /* cache info: needed for Pentium Pro compatibility */
1288 #ifdef TARGET_X86_64
1291 EBX
= env
->cpuid_vendor1
;
1292 EDX
= env
->cpuid_vendor2
;
1293 ECX
= env
->cpuid_vendor3
;
1296 EAX
= env
->cpuid_features
;
1299 /* long mode + syscall/sysret features */
1300 EDX
= (env
->cpuid_features
& 0x0183F3FF) | (1 << 29) | (1 << 11);
1303 /* virtual & phys address size in low 2 bytes. */
1313 void helper_enter_level(int level
, int data32
)
1316 uint32_t esp_mask
, esp
, ebp
;
1318 esp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
1319 ssp
= env
->segs
[R_SS
].base
;
1328 stl(ssp
+ (esp
& esp_mask
), ldl(ssp
+ (ebp
& esp_mask
)));
1331 stl(ssp
+ (esp
& esp_mask
), T1
);
1338 stw(ssp
+ (esp
& esp_mask
), lduw(ssp
+ (ebp
& esp_mask
)));
1341 stw(ssp
+ (esp
& esp_mask
), T1
);
1345 void helper_lldt_T0(void)
1350 int index
, entry_limit
;
1353 selector
= T0
& 0xffff;
1354 if ((selector
& 0xfffc) == 0) {
1355 /* XXX: NULL selector case: invalid LDT */
1360 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1362 index
= selector
& ~7;
1363 #ifdef TARGET_X86_64
1364 if (env
->hflags
& HF_LMA_MASK
)
1369 if ((index
+ entry_limit
) > dt
->limit
)
1370 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1371 ptr
= dt
->base
+ index
;
1372 e1
= ldl_kernel(ptr
);
1373 e2
= ldl_kernel(ptr
+ 4);
1374 if ((e2
& DESC_S_MASK
) || ((e2
>> DESC_TYPE_SHIFT
) & 0xf) != 2)
1375 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1376 if (!(e2
& DESC_P_MASK
))
1377 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
1378 #ifdef TARGET_X86_64
1379 if (env
->hflags
& HF_LMA_MASK
) {
1381 e3
= ldl_kernel(ptr
+ 8);
1382 load_seg_cache_raw_dt(&env
->ldt
, e1
, e2
);
1383 env
->ldt
.base
|= (target_ulong
)e3
<< 32;
1387 load_seg_cache_raw_dt(&env
->ldt
, e1
, e2
);
1390 env
->ldt
.selector
= selector
;
1393 void helper_ltr_T0(void)
1398 int index
, type
, entry_limit
;
1401 selector
= T0
& 0xffff;
1402 if ((selector
& 0xfffc) == 0) {
1403 /* NULL selector case: invalid TR */
1409 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1411 index
= selector
& ~7;
1412 #ifdef TARGET_X86_64
1413 if (env
->hflags
& HF_LMA_MASK
)
1418 if ((index
+ entry_limit
) > dt
->limit
)
1419 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1420 ptr
= dt
->base
+ index
;
1421 e1
= ldl_kernel(ptr
);
1422 e2
= ldl_kernel(ptr
+ 4);
1423 type
= (e2
>> DESC_TYPE_SHIFT
) & 0xf;
1424 if ((e2
& DESC_S_MASK
) ||
1425 (type
!= 1 && type
!= 9))
1426 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1427 if (!(e2
& DESC_P_MASK
))
1428 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
1429 #ifdef TARGET_X86_64
1430 if (env
->hflags
& HF_LMA_MASK
) {
1432 e3
= ldl_kernel(ptr
+ 8);
1433 load_seg_cache_raw_dt(&env
->tr
, e1
, e2
);
1434 env
->tr
.base
|= (target_ulong
)e3
<< 32;
1438 load_seg_cache_raw_dt(&env
->tr
, e1
, e2
);
1440 e2
|= DESC_TSS_BUSY_MASK
;
1441 stl_kernel(ptr
+ 4, e2
);
1443 env
->tr
.selector
= selector
;
1446 /* only works if protected mode and not VM86. seg_reg must be != R_CS */
1447 void load_seg(int seg_reg
, int selector
)
1456 if ((selector
& 0xfffc) == 0) {
1457 /* null selector case */
1459 #ifdef TARGET_X86_64
1460 && !(env
->hflags
& HF_CS64_MASK
)
1463 raise_exception_err(EXCP0D_GPF
, 0);
1464 cpu_x86_load_seg_cache(env
, seg_reg
, selector
, 0, 0, 0);
1471 index
= selector
& ~7;
1472 if ((index
+ 7) > dt
->limit
)
1473 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1474 ptr
= dt
->base
+ index
;
1475 e1
= ldl_kernel(ptr
);
1476 e2
= ldl_kernel(ptr
+ 4);
1478 if (!(e2
& DESC_S_MASK
))
1479 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1481 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1482 cpl
= env
->hflags
& HF_CPL_MASK
;
1483 if (seg_reg
== R_SS
) {
1484 /* must be writable segment */
1485 if ((e2
& DESC_CS_MASK
) || !(e2
& DESC_W_MASK
))
1486 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1487 if (rpl
!= cpl
|| dpl
!= cpl
)
1488 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1490 /* must be readable segment */
1491 if ((e2
& (DESC_CS_MASK
| DESC_R_MASK
)) == DESC_CS_MASK
)
1492 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1494 if (!(e2
& DESC_CS_MASK
) || !(e2
& DESC_C_MASK
)) {
1495 /* if not conforming code, test rights */
1496 if (dpl
< cpl
|| dpl
< rpl
)
1497 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1501 if (!(e2
& DESC_P_MASK
)) {
1502 if (seg_reg
== R_SS
)
1503 raise_exception_err(EXCP0C_STACK
, selector
& 0xfffc);
1505 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
1508 /* set the access bit if not already set */
1509 if (!(e2
& DESC_A_MASK
)) {
1511 stl_kernel(ptr
+ 4, e2
);
1514 cpu_x86_load_seg_cache(env
, seg_reg
, selector
,
1515 get_seg_base(e1
, e2
),
1516 get_seg_limit(e1
, e2
),
1519 fprintf(logfile
, "load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
1520 selector
, (unsigned long)sc
->base
, sc
->limit
, sc
->flags
);
1525 /* protected mode jump */
1526 void helper_ljmp_protected_T0_T1(int next_eip
)
1528 int new_cs
, gate_cs
, type
;
1529 uint32_t e1
, e2
, cpl
, dpl
, rpl
, limit
;
1530 target_ulong new_eip
;
1534 if ((new_cs
& 0xfffc) == 0)
1535 raise_exception_err(EXCP0D_GPF
, 0);
1536 if (load_segment(&e1
, &e2
, new_cs
) != 0)
1537 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1538 cpl
= env
->hflags
& HF_CPL_MASK
;
1539 if (e2
& DESC_S_MASK
) {
1540 if (!(e2
& DESC_CS_MASK
))
1541 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1542 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1543 if (e2
& DESC_C_MASK
) {
1544 /* conforming code segment */
1546 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1548 /* non conforming code segment */
1551 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1553 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1555 if (!(e2
& DESC_P_MASK
))
1556 raise_exception_err(EXCP0B_NOSEG
, new_cs
& 0xfffc);
1557 limit
= get_seg_limit(e1
, e2
);
1558 if (new_eip
> limit
&&
1559 !(env
->hflags
& HF_LMA_MASK
) && !(e2
& DESC_L_MASK
))
1560 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1561 cpu_x86_load_seg_cache(env
, R_CS
, (new_cs
& 0xfffc) | cpl
,
1562 get_seg_base(e1
, e2
), limit
, e2
);
1565 /* jump to call or task gate */
1566 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1568 cpl
= env
->hflags
& HF_CPL_MASK
;
1569 type
= (e2
>> DESC_TYPE_SHIFT
) & 0xf;
1571 case 1: /* 286 TSS */
1572 case 9: /* 386 TSS */
1573 case 5: /* task gate */
1574 if (dpl
< cpl
|| dpl
< rpl
)
1575 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1576 switch_tss(new_cs
, e1
, e2
, SWITCH_TSS_JMP
, next_eip
);
1578 case 4: /* 286 call gate */
1579 case 12: /* 386 call gate */
1580 if ((dpl
< cpl
) || (dpl
< rpl
))
1581 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1582 if (!(e2
& DESC_P_MASK
))
1583 raise_exception_err(EXCP0B_NOSEG
, new_cs
& 0xfffc);
1585 new_eip
= (e1
& 0xffff);
1587 new_eip
|= (e2
& 0xffff0000);
1588 if (load_segment(&e1
, &e2
, gate_cs
) != 0)
1589 raise_exception_err(EXCP0D_GPF
, gate_cs
& 0xfffc);
1590 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1591 /* must be code segment */
1592 if (((e2
& (DESC_S_MASK
| DESC_CS_MASK
)) !=
1593 (DESC_S_MASK
| DESC_CS_MASK
)))
1594 raise_exception_err(EXCP0D_GPF
, gate_cs
& 0xfffc);
1595 if (((e2
& DESC_C_MASK
) && (dpl
> cpl
)) ||
1596 (!(e2
& DESC_C_MASK
) && (dpl
!= cpl
)))
1597 raise_exception_err(EXCP0D_GPF
, gate_cs
& 0xfffc);
1598 if (!(e2
& DESC_P_MASK
))
1599 raise_exception_err(EXCP0D_GPF
, gate_cs
& 0xfffc);
1600 limit
= get_seg_limit(e1
, e2
);
1601 if (new_eip
> limit
)
1602 raise_exception_err(EXCP0D_GPF
, 0);
1603 cpu_x86_load_seg_cache(env
, R_CS
, (gate_cs
& 0xfffc) | cpl
,
1604 get_seg_base(e1
, e2
), limit
, e2
);
1608 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1614 /* real mode call */
1615 void helper_lcall_real_T0_T1(int shift
, int next_eip
)
1617 int new_cs
, new_eip
;
1618 uint32_t esp
, esp_mask
;
1624 esp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
1625 ssp
= env
->segs
[R_SS
].base
;
1627 PUSHL(ssp
, esp
, esp_mask
, env
->segs
[R_CS
].selector
);
1628 PUSHL(ssp
, esp
, esp_mask
, next_eip
);
1630 PUSHW(ssp
, esp
, esp_mask
, env
->segs
[R_CS
].selector
);
1631 PUSHW(ssp
, esp
, esp_mask
, next_eip
);
1634 ESP
= (ESP
& ~esp_mask
) | (esp
& esp_mask
);
1636 env
->segs
[R_CS
].selector
= new_cs
;
1637 env
->segs
[R_CS
].base
= (new_cs
<< 4);
1640 /* protected mode call */
1641 void helper_lcall_protected_T0_T1(int shift
, int next_eip
)
1643 int new_cs
, new_eip
, new_stack
, i
;
1644 uint32_t e1
, e2
, cpl
, dpl
, rpl
, selector
, offset
, param_count
;
1645 uint32_t ss
, ss_e1
, ss_e2
, sp
, type
, ss_dpl
, sp_mask
;
1646 uint32_t val
, limit
, old_sp_mask
;
1647 target_ulong ssp
, old_ssp
;
1652 if (loglevel
& CPU_LOG_PCALL
) {
1653 fprintf(logfile
, "lcall %04x:%08x s=%d\n",
1654 new_cs
, new_eip
, shift
);
1655 cpu_dump_state(env
, logfile
, fprintf
, X86_DUMP_CCOP
);
1658 if ((new_cs
& 0xfffc) == 0)
1659 raise_exception_err(EXCP0D_GPF
, 0);
1660 if (load_segment(&e1
, &e2
, new_cs
) != 0)
1661 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1662 cpl
= env
->hflags
& HF_CPL_MASK
;
1664 if (loglevel
& CPU_LOG_PCALL
) {
1665 fprintf(logfile
, "desc=%08x:%08x\n", e1
, e2
);
1668 if (e2
& DESC_S_MASK
) {
1669 if (!(e2
& DESC_CS_MASK
))
1670 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1671 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1672 if (e2
& DESC_C_MASK
) {
1673 /* conforming code segment */
1675 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1677 /* non conforming code segment */
1680 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1682 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1684 if (!(e2
& DESC_P_MASK
))
1685 raise_exception_err(EXCP0B_NOSEG
, new_cs
& 0xfffc);
1688 sp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
1689 ssp
= env
->segs
[R_SS
].base
;
1691 PUSHL(ssp
, sp
, sp_mask
, env
->segs
[R_CS
].selector
);
1692 PUSHL(ssp
, sp
, sp_mask
, next_eip
);
1694 PUSHW(ssp
, sp
, sp_mask
, env
->segs
[R_CS
].selector
);
1695 PUSHW(ssp
, sp
, sp_mask
, next_eip
);
1698 limit
= get_seg_limit(e1
, e2
);
1699 if (new_eip
> limit
)
1700 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1701 /* from this point, not restartable */
1702 ESP
= (ESP
& ~sp_mask
) | (sp
& sp_mask
);
1703 cpu_x86_load_seg_cache(env
, R_CS
, (new_cs
& 0xfffc) | cpl
,
1704 get_seg_base(e1
, e2
), limit
, e2
);
1707 /* check gate type */
1708 type
= (e2
>> DESC_TYPE_SHIFT
) & 0x1f;
1709 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1712 case 1: /* available 286 TSS */
1713 case 9: /* available 386 TSS */
1714 case 5: /* task gate */
1715 if (dpl
< cpl
|| dpl
< rpl
)
1716 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1717 switch_tss(new_cs
, e1
, e2
, SWITCH_TSS_CALL
, next_eip
);
1719 case 4: /* 286 call gate */
1720 case 12: /* 386 call gate */
1723 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1728 if (dpl
< cpl
|| dpl
< rpl
)
1729 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1730 /* check valid bit */
1731 if (!(e2
& DESC_P_MASK
))
1732 raise_exception_err(EXCP0B_NOSEG
, new_cs
& 0xfffc);
1733 selector
= e1
>> 16;
1734 offset
= (e2
& 0xffff0000) | (e1
& 0x0000ffff);
1735 param_count
= e2
& 0x1f;
1736 if ((selector
& 0xfffc) == 0)
1737 raise_exception_err(EXCP0D_GPF
, 0);
1739 if (load_segment(&e1
, &e2
, selector
) != 0)
1740 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1741 if (!(e2
& DESC_S_MASK
) || !(e2
& (DESC_CS_MASK
)))
1742 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1743 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1745 raise_exception_err(EXCP0D_GPF
, selector
& 0xfffc);
1746 if (!(e2
& DESC_P_MASK
))
1747 raise_exception_err(EXCP0B_NOSEG
, selector
& 0xfffc);
1749 if (!(e2
& DESC_C_MASK
) && dpl
< cpl
) {
1750 /* to inner priviledge */
1751 get_ss_esp_from_tss(&ss
, &sp
, dpl
);
1753 if (loglevel
& CPU_LOG_PCALL
)
1754 fprintf(logfile
, "new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx
"\n",
1755 ss
, sp
, param_count
, ESP
);
1757 if ((ss
& 0xfffc) == 0)
1758 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
1759 if ((ss
& 3) != dpl
)
1760 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
1761 if (load_segment(&ss_e1
, &ss_e2
, ss
) != 0)
1762 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
1763 ss_dpl
= (ss_e2
>> DESC_DPL_SHIFT
) & 3;
1765 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
1766 if (!(ss_e2
& DESC_S_MASK
) ||
1767 (ss_e2
& DESC_CS_MASK
) ||
1768 !(ss_e2
& DESC_W_MASK
))
1769 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
1770 if (!(ss_e2
& DESC_P_MASK
))
1771 raise_exception_err(EXCP0A_TSS
, ss
& 0xfffc);
1773 // push_size = ((param_count * 2) + 8) << shift;
1775 old_sp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
1776 old_ssp
= env
->segs
[R_SS
].base
;
1778 sp_mask
= get_sp_mask(ss_e2
);
1779 ssp
= get_seg_base(ss_e1
, ss_e2
);
1781 PUSHL(ssp
, sp
, sp_mask
, env
->segs
[R_SS
].selector
);
1782 PUSHL(ssp
, sp
, sp_mask
, ESP
);
1783 for(i
= param_count
- 1; i
>= 0; i
--) {
1784 val
= ldl_kernel(old_ssp
+ ((ESP
+ i
* 4) & old_sp_mask
));
1785 PUSHL(ssp
, sp
, sp_mask
, val
);
1788 PUSHW(ssp
, sp
, sp_mask
, env
->segs
[R_SS
].selector
);
1789 PUSHW(ssp
, sp
, sp_mask
, ESP
);
1790 for(i
= param_count
- 1; i
>= 0; i
--) {
1791 val
= lduw_kernel(old_ssp
+ ((ESP
+ i
* 2) & old_sp_mask
));
1792 PUSHW(ssp
, sp
, sp_mask
, val
);
1797 /* to same priviledge */
1799 sp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
1800 ssp
= env
->segs
[R_SS
].base
;
1801 // push_size = (4 << shift);
1806 PUSHL(ssp
, sp
, sp_mask
, env
->segs
[R_CS
].selector
);
1807 PUSHL(ssp
, sp
, sp_mask
, next_eip
);
1809 PUSHW(ssp
, sp
, sp_mask
, env
->segs
[R_CS
].selector
);
1810 PUSHW(ssp
, sp
, sp_mask
, next_eip
);
1813 /* from this point, not restartable */
1816 ss
= (ss
& ~3) | dpl
;
1817 cpu_x86_load_seg_cache(env
, R_SS
, ss
,
1819 get_seg_limit(ss_e1
, ss_e2
),
1823 selector
= (selector
& ~3) | dpl
;
1824 cpu_x86_load_seg_cache(env
, R_CS
, selector
,
1825 get_seg_base(e1
, e2
),
1826 get_seg_limit(e1
, e2
),
1828 cpu_x86_set_cpl(env
, dpl
);
1829 ESP
= (ESP
& ~sp_mask
) | (sp
& sp_mask
);
1833 if (kqemu_is_ok(env
)) {
1834 env
->exception_index
= -1;
1840 /* real and vm86 mode iret */
1841 void helper_iret_real(int shift
)
1843 uint32_t sp
, new_cs
, new_eip
, new_eflags
, sp_mask
;
1847 sp_mask
= 0xffff; /* XXXX: use SS segment size ? */
1849 ssp
= env
->segs
[R_SS
].base
;
1852 POPL(ssp
, sp
, sp_mask
, new_eip
);
1853 POPL(ssp
, sp
, sp_mask
, new_cs
);
1855 POPL(ssp
, sp
, sp_mask
, new_eflags
);
1858 POPW(ssp
, sp
, sp_mask
, new_eip
);
1859 POPW(ssp
, sp
, sp_mask
, new_cs
);
1860 POPW(ssp
, sp
, sp_mask
, new_eflags
);
1862 ESP
= (ESP
& ~sp_mask
) | (sp
& sp_mask
);
1863 load_seg_vm(R_CS
, new_cs
);
1865 if (env
->eflags
& VM_MASK
)
1866 eflags_mask
= TF_MASK
| AC_MASK
| ID_MASK
| IF_MASK
| RF_MASK
| NT_MASK
;
1868 eflags_mask
= TF_MASK
| AC_MASK
| ID_MASK
| IF_MASK
| IOPL_MASK
| RF_MASK
| NT_MASK
;
1870 eflags_mask
&= 0xffff;
1871 load_eflags(new_eflags
, eflags_mask
);
1874 static inline void validate_seg(int seg_reg
, int cpl
)
1879 e2
= env
->segs
[seg_reg
].flags
;
1880 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1881 if (!(e2
& DESC_CS_MASK
) || !(e2
& DESC_C_MASK
)) {
1882 /* data or non conforming code segment */
1884 cpu_x86_load_seg_cache(env
, seg_reg
, 0, 0, 0, 0);
1889 /* protected mode iret */
1890 static inline void helper_ret_protected(int shift
, int is_iret
, int addend
)
1892 uint32_t new_cs
, new_eflags
, new_ss
;
1893 uint32_t new_es
, new_ds
, new_fs
, new_gs
;
1894 uint32_t e1
, e2
, ss_e1
, ss_e2
;
1895 int cpl
, dpl
, rpl
, eflags_mask
, iopl
;
1896 target_ulong ssp
, sp
, new_eip
, new_esp
, sp_mask
;
1898 #ifdef TARGET_X86_64
1903 sp_mask
= get_sp_mask(env
->segs
[R_SS
].flags
);
1905 ssp
= env
->segs
[R_SS
].base
;
1906 new_eflags
= 0; /* avoid warning */
1907 #ifdef TARGET_X86_64
1913 POPQ(sp
, new_eflags
);
1919 POPL(ssp
, sp
, sp_mask
, new_eip
);
1920 POPL(ssp
, sp
, sp_mask
, new_cs
);
1923 POPL(ssp
, sp
, sp_mask
, new_eflags
);
1924 if (new_eflags
& VM_MASK
)
1925 goto return_to_vm86
;
1929 POPW(ssp
, sp
, sp_mask
, new_eip
);
1930 POPW(ssp
, sp
, sp_mask
, new_cs
);
1932 POPW(ssp
, sp
, sp_mask
, new_eflags
);
1935 if (loglevel
& CPU_LOG_PCALL
) {
1936 fprintf(logfile
, "lret new %04x:" TARGET_FMT_lx
" s=%d addend=0x%x\n",
1937 new_cs
, new_eip
, shift
, addend
);
1938 cpu_dump_state(env
, logfile
, fprintf
, X86_DUMP_CCOP
);
1941 if ((new_cs
& 0xfffc) == 0)
1942 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1943 if (load_segment(&e1
, &e2
, new_cs
) != 0)
1944 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1945 if (!(e2
& DESC_S_MASK
) ||
1946 !(e2
& DESC_CS_MASK
))
1947 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1948 cpl
= env
->hflags
& HF_CPL_MASK
;
1951 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1952 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
1953 if (e2
& DESC_C_MASK
) {
1955 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1958 raise_exception_err(EXCP0D_GPF
, new_cs
& 0xfffc);
1960 if (!(e2
& DESC_P_MASK
))
1961 raise_exception_err(EXCP0B_NOSEG
, new_cs
& 0xfffc);
1964 if (rpl
== cpl
&& (!(env
->hflags
& HF_CS64_MASK
) ||
1965 ((env
->hflags
& HF_CS64_MASK
) && !is_iret
))) {
1966 /* return to same priledge level */
1967 cpu_x86_load_seg_cache(env
, R_CS
, new_cs
,
1968 get_seg_base(e1
, e2
),
1969 get_seg_limit(e1
, e2
),
1972 /* return to different priviledge level */
1973 #ifdef TARGET_X86_64
1982 POPL(ssp
, sp
, sp_mask
, new_esp
);
1983 POPL(ssp
, sp
, sp_mask
, new_ss
);
1987 POPW(ssp
, sp
, sp_mask
, new_esp
);
1988 POPW(ssp
, sp
, sp_mask
, new_ss
);
1991 if (loglevel
& CPU_LOG_PCALL
) {
1992 fprintf(logfile
, "new ss:esp=%04x:" TARGET_FMT_lx
"\n",
1996 if ((env
->hflags
& HF_LMA_MASK
) && (new_ss
& 0xfffc) == 0) {
1997 /* NULL ss is allowed in long mode */
1998 cpu_x86_load_seg_cache(env
, R_SS
, new_ss
,
2000 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
2001 DESC_S_MASK
| (rpl
<< DESC_DPL_SHIFT
) |
2002 DESC_W_MASK
| DESC_A_MASK
);
2004 if ((new_ss
& 3) != rpl
)
2005 raise_exception_err(EXCP0D_GPF
, new_ss
& 0xfffc);
2006 if (load_segment(&ss_e1
, &ss_e2
, new_ss
) != 0)
2007 raise_exception_err(EXCP0D_GPF
, new_ss
& 0xfffc);
2008 if (!(ss_e2
& DESC_S_MASK
) ||
2009 (ss_e2
& DESC_CS_MASK
) ||
2010 !(ss_e2
& DESC_W_MASK
))
2011 raise_exception_err(EXCP0D_GPF
, new_ss
& 0xfffc);
2012 dpl
= (ss_e2
>> DESC_DPL_SHIFT
) & 3;
2014 raise_exception_err(EXCP0D_GPF
, new_ss
& 0xfffc);
2015 if (!(ss_e2
& DESC_P_MASK
))
2016 raise_exception_err(EXCP0B_NOSEG
, new_ss
& 0xfffc);
2017 cpu_x86_load_seg_cache(env
, R_SS
, new_ss
,
2018 get_seg_base(ss_e1
, ss_e2
),
2019 get_seg_limit(ss_e1
, ss_e2
),
2023 cpu_x86_load_seg_cache(env
, R_CS
, new_cs
,
2024 get_seg_base(e1
, e2
),
2025 get_seg_limit(e1
, e2
),
2027 cpu_x86_set_cpl(env
, rpl
);
2029 #ifdef TARGET_X86_64
2034 sp_mask
= get_sp_mask(ss_e2
);
2036 /* validate data segments */
2037 validate_seg(R_ES
, cpl
);
2038 validate_seg(R_DS
, cpl
);
2039 validate_seg(R_FS
, cpl
);
2040 validate_seg(R_GS
, cpl
);
2044 ESP
= (ESP
& ~sp_mask
) | (sp
& sp_mask
);
2047 /* NOTE: 'cpl' is the _old_ CPL */
2048 eflags_mask
= TF_MASK
| AC_MASK
| ID_MASK
| RF_MASK
| NT_MASK
;
2050 eflags_mask
|= IOPL_MASK
;
2051 iopl
= (env
->eflags
>> IOPL_SHIFT
) & 3;
2053 eflags_mask
|= IF_MASK
;
2055 eflags_mask
&= 0xffff;
2056 load_eflags(new_eflags
, eflags_mask
);
2061 POPL(ssp
, sp
, sp_mask
, new_esp
);
2062 POPL(ssp
, sp
, sp_mask
, new_ss
);
2063 POPL(ssp
, sp
, sp_mask
, new_es
);
2064 POPL(ssp
, sp
, sp_mask
, new_ds
);
2065 POPL(ssp
, sp
, sp_mask
, new_fs
);
2066 POPL(ssp
, sp
, sp_mask
, new_gs
);
2068 /* modify processor state */
2069 load_eflags(new_eflags
, TF_MASK
| AC_MASK
| ID_MASK
|
2070 IF_MASK
| IOPL_MASK
| VM_MASK
| NT_MASK
| VIF_MASK
| VIP_MASK
);
2071 load_seg_vm(R_CS
, new_cs
& 0xffff);
2072 cpu_x86_set_cpl(env
, 3);
2073 load_seg_vm(R_SS
, new_ss
& 0xffff);
2074 load_seg_vm(R_ES
, new_es
& 0xffff);
2075 load_seg_vm(R_DS
, new_ds
& 0xffff);
2076 load_seg_vm(R_FS
, new_fs
& 0xffff);
2077 load_seg_vm(R_GS
, new_gs
& 0xffff);
2079 env
->eip
= new_eip
& 0xffff;
2083 void helper_iret_protected(int shift
, int next_eip
)
2085 int tss_selector
, type
;
2088 /* specific case for TSS */
2089 if (env
->eflags
& NT_MASK
) {
2090 #ifdef TARGET_X86_64
2091 if (env
->hflags
& HF_LMA_MASK
)
2092 raise_exception_err(EXCP0D_GPF
, 0);
2094 tss_selector
= lduw_kernel(env
->tr
.base
+ 0);
2095 if (tss_selector
& 4)
2096 raise_exception_err(EXCP0A_TSS
, tss_selector
& 0xfffc);
2097 if (load_segment(&e1
, &e2
, tss_selector
) != 0)
2098 raise_exception_err(EXCP0A_TSS
, tss_selector
& 0xfffc);
2099 type
= (e2
>> DESC_TYPE_SHIFT
) & 0x17;
2100 /* NOTE: we check both segment and busy TSS */
2102 raise_exception_err(EXCP0A_TSS
, tss_selector
& 0xfffc);
2103 switch_tss(tss_selector
, e1
, e2
, SWITCH_TSS_IRET
, next_eip
);
2105 helper_ret_protected(shift
, 1, 0);
2108 if (kqemu_is_ok(env
)) {
2109 CC_OP
= CC_OP_EFLAGS
;
2110 env
->exception_index
= -1;
2116 void helper_lret_protected(int shift
, int addend
)
2118 helper_ret_protected(shift
, 0, addend
);
2120 if (kqemu_is_ok(env
)) {
2121 CC_OP
= CC_OP_EFLAGS
;
2122 env
->exception_index
= -1;
2128 void helper_sysenter(void)
2130 if (env
->sysenter_cs
== 0) {
2131 raise_exception_err(EXCP0D_GPF
, 0);
2133 env
->eflags
&= ~(VM_MASK
| IF_MASK
| RF_MASK
);
2134 cpu_x86_set_cpl(env
, 0);
2135 cpu_x86_load_seg_cache(env
, R_CS
, env
->sysenter_cs
& 0xfffc,
2137 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
2139 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
);
2140 cpu_x86_load_seg_cache(env
, R_SS
, (env
->sysenter_cs
+ 8) & 0xfffc,
2142 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
2144 DESC_W_MASK
| DESC_A_MASK
);
2145 ESP
= env
->sysenter_esp
;
2146 EIP
= env
->sysenter_eip
;
2149 void helper_sysexit(void)
2153 cpl
= env
->hflags
& HF_CPL_MASK
;
2154 if (env
->sysenter_cs
== 0 || cpl
!= 0) {
2155 raise_exception_err(EXCP0D_GPF
, 0);
2157 cpu_x86_set_cpl(env
, 3);
2158 cpu_x86_load_seg_cache(env
, R_CS
, ((env
->sysenter_cs
+ 16) & 0xfffc) | 3,
2160 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
2161 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
2162 DESC_CS_MASK
| DESC_R_MASK
| DESC_A_MASK
);
2163 cpu_x86_load_seg_cache(env
, R_SS
, ((env
->sysenter_cs
+ 24) & 0xfffc) | 3,
2165 DESC_G_MASK
| DESC_B_MASK
| DESC_P_MASK
|
2166 DESC_S_MASK
| (3 << DESC_DPL_SHIFT
) |
2167 DESC_W_MASK
| DESC_A_MASK
);
2171 if (kqemu_is_ok(env
)) {
2172 env
->exception_index
= -1;
2178 void helper_movl_crN_T0(int reg
)
2180 #if !defined(CONFIG_USER_ONLY)
2183 cpu_x86_update_cr0(env
, T0
);
2186 cpu_x86_update_cr3(env
, T0
);
2189 cpu_x86_update_cr4(env
, T0
);
2192 cpu_set_apic_tpr(env
, T0
);
2202 void helper_movl_drN_T0(int reg
)
2207 void helper_invlpg(unsigned int addr
)
2209 cpu_x86_flush_tlb(env
, addr
);
2212 void helper_rdtsc(void)
2216 val
= cpu_get_tsc(env
);
2217 EAX
= (uint32_t)(val
);
2218 EDX
= (uint32_t)(val
>> 32);
2221 #if defined(CONFIG_USER_ONLY)
2222 void helper_wrmsr(void)
2226 void helper_rdmsr(void)
2230 void helper_wrmsr(void)
2234 val
= ((uint32_t)EAX
) | ((uint64_t)((uint32_t)EDX
) << 32);
2236 switch((uint32_t)ECX
) {
2237 case MSR_IA32_SYSENTER_CS
:
2238 env
->sysenter_cs
= val
& 0xffff;
2240 case MSR_IA32_SYSENTER_ESP
:
2241 env
->sysenter_esp
= val
;
2243 case MSR_IA32_SYSENTER_EIP
:
2244 env
->sysenter_eip
= val
;
2246 case MSR_IA32_APICBASE
:
2247 cpu_set_apic_base(env
, val
);
2249 #ifdef TARGET_X86_64
2251 #define MSR_EFER_UPDATE_MASK (MSR_EFER_SCE | MSR_EFER_LME | \
2252 MSR_EFER_NXE | MSR_EFER_FFXSR)
2253 env
->efer
= (env
->efer
& ~MSR_EFER_UPDATE_MASK
) |
2254 (val
& MSR_EFER_UPDATE_MASK
);
2269 env
->segs
[R_FS
].base
= val
;
2272 env
->segs
[R_GS
].base
= val
;
2274 case MSR_KERNELGSBASE
:
2275 env
->kernelgsbase
= val
;
2279 /* XXX: exception ? */
2284 void helper_rdmsr(void)
2287 switch((uint32_t)ECX
) {
2288 case MSR_IA32_SYSENTER_CS
:
2289 val
= env
->sysenter_cs
;
2291 case MSR_IA32_SYSENTER_ESP
:
2292 val
= env
->sysenter_esp
;
2294 case MSR_IA32_SYSENTER_EIP
:
2295 val
= env
->sysenter_eip
;
2297 case MSR_IA32_APICBASE
:
2298 val
= cpu_get_apic_base(env
);
2300 #ifdef TARGET_X86_64
2317 val
= env
->segs
[R_FS
].base
;
2320 val
= env
->segs
[R_GS
].base
;
2322 case MSR_KERNELGSBASE
:
2323 val
= env
->kernelgsbase
;
2327 /* XXX: exception ? */
2331 EAX
= (uint32_t)(val
);
2332 EDX
= (uint32_t)(val
>> 32);
2336 void helper_lsl(void)
2338 unsigned int selector
, limit
;
2340 int rpl
, dpl
, cpl
, type
;
2342 CC_SRC
= cc_table
[CC_OP
].compute_all() & ~CC_Z
;
2343 selector
= T0
& 0xffff;
2344 if (load_segment(&e1
, &e2
, selector
) != 0)
2347 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
2348 cpl
= env
->hflags
& HF_CPL_MASK
;
2349 if (e2
& DESC_S_MASK
) {
2350 if ((e2
& DESC_CS_MASK
) && (e2
& DESC_C_MASK
)) {
2353 if (dpl
< cpl
|| dpl
< rpl
)
2357 type
= (e2
>> DESC_TYPE_SHIFT
) & 0xf;
2368 if (dpl
< cpl
|| dpl
< rpl
)
2371 limit
= get_seg_limit(e1
, e2
);
2376 void helper_lar(void)
2378 unsigned int selector
;
2380 int rpl
, dpl
, cpl
, type
;
2382 CC_SRC
= cc_table
[CC_OP
].compute_all() & ~CC_Z
;
2383 selector
= T0
& 0xffff;
2384 if ((selector
& 0xfffc) == 0)
2386 if (load_segment(&e1
, &e2
, selector
) != 0)
2389 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
2390 cpl
= env
->hflags
& HF_CPL_MASK
;
2391 if (e2
& DESC_S_MASK
) {
2392 if ((e2
& DESC_CS_MASK
) && (e2
& DESC_C_MASK
)) {
2395 if (dpl
< cpl
|| dpl
< rpl
)
2399 type
= (e2
>> DESC_TYPE_SHIFT
) & 0xf;
2413 if (dpl
< cpl
|| dpl
< rpl
)
2416 T1
= e2
& 0x00f0ff00;
2420 void helper_verr(void)
2422 unsigned int selector
;
2426 CC_SRC
= cc_table
[CC_OP
].compute_all() & ~CC_Z
;
2427 selector
= T0
& 0xffff;
2428 if ((selector
& 0xfffc) == 0)
2430 if (load_segment(&e1
, &e2
, selector
) != 0)
2432 if (!(e2
& DESC_S_MASK
))
2435 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
2436 cpl
= env
->hflags
& HF_CPL_MASK
;
2437 if (e2
& DESC_CS_MASK
) {
2438 if (!(e2
& DESC_R_MASK
))
2440 if (!(e2
& DESC_C_MASK
)) {
2441 if (dpl
< cpl
|| dpl
< rpl
)
2445 if (dpl
< cpl
|| dpl
< rpl
)
2451 void helper_verw(void)
2453 unsigned int selector
;
2457 CC_SRC
= cc_table
[CC_OP
].compute_all() & ~CC_Z
;
2458 selector
= T0
& 0xffff;
2459 if ((selector
& 0xfffc) == 0)
2461 if (load_segment(&e1
, &e2
, selector
) != 0)
2463 if (!(e2
& DESC_S_MASK
))
2466 dpl
= (e2
>> DESC_DPL_SHIFT
) & 3;
2467 cpl
= env
->hflags
& HF_CPL_MASK
;
2468 if (e2
& DESC_CS_MASK
) {
2471 if (dpl
< cpl
|| dpl
< rpl
)
2473 if (!(e2
& DESC_W_MASK
))
2481 void helper_fldt_ST0_A0(void)
2484 new_fpstt
= (env
->fpstt
- 1) & 7;
2485 env
->fpregs
[new_fpstt
].d
= helper_fldt(A0
);
2486 env
->fpstt
= new_fpstt
;
2487 env
->fptags
[new_fpstt
] = 0; /* validate stack entry */
2490 void helper_fstt_ST0_A0(void)
2492 helper_fstt(ST0
, A0
);
2495 void fpu_set_exception(int mask
)
2498 if (env
->fpus
& (~env
->fpuc
& FPUC_EM
))
2499 env
->fpus
|= FPUS_SE
| FPUS_B
;
2502 CPU86_LDouble
helper_fdiv(CPU86_LDouble a
, CPU86_LDouble b
)
2505 fpu_set_exception(FPUS_ZE
);
2509 void fpu_raise_exception(void)
2511 if (env
->cr
[0] & CR0_NE_MASK
) {
2512 raise_exception(EXCP10_COPR
);
2514 #if !defined(CONFIG_USER_ONLY)
2523 void helper_fbld_ST0_A0(void)
2531 for(i
= 8; i
>= 0; i
--) {
2533 val
= (val
* 100) + ((v
>> 4) * 10) + (v
& 0xf);
2536 if (ldub(A0
+ 9) & 0x80)
2542 void helper_fbst_ST0_A0(void)
2546 target_ulong mem_ref
, mem_end
;
2552 mem_end
= mem_ref
+ 9;
2559 while (mem_ref
< mem_end
) {
2564 v
= ((v
/ 10) << 4) | (v
% 10);
2567 while (mem_ref
< mem_end
) {
2572 void helper_f2xm1(void)
2574 ST0
= pow(2.0,ST0
) - 1.0;
2577 void helper_fyl2x(void)
2579 CPU86_LDouble fptemp
;
2583 fptemp
= log(fptemp
)/log(2.0); /* log2(ST) */
2587 env
->fpus
&= (~0x4700);
2592 void helper_fptan(void)
2594 CPU86_LDouble fptemp
;
2597 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2603 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2604 /* the above code is for |arg| < 2**52 only */
2608 void helper_fpatan(void)
2610 CPU86_LDouble fptemp
, fpsrcop
;
2614 ST1
= atan2(fpsrcop
,fptemp
);
2618 void helper_fxtract(void)
2620 CPU86_LDoubleU temp
;
2621 unsigned int expdif
;
2624 expdif
= EXPD(temp
) - EXPBIAS
;
2625 /*DP exponent bias*/
2632 void helper_fprem1(void)
2634 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2635 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2641 fpsrcop1
.d
= fpsrcop
;
2643 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2645 dblq
= fpsrcop
/ fptemp
;
2646 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2647 ST0
= fpsrcop
- fptemp
*dblq
;
2648 q
= (int)dblq
; /* cutting off top bits is assumed here */
2649 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2650 /* (C0,C1,C3) <-- (q2,q1,q0) */
2651 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2652 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2653 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2655 env
->fpus
|= 0x400; /* C2 <-- 1 */
2656 fptemp
= pow(2.0, expdif
-50);
2657 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2658 /* fpsrcop = integer obtained by rounding to the nearest */
2659 fpsrcop
= (fpsrcop
-floor(fpsrcop
) < ceil(fpsrcop
)-fpsrcop
)?
2660 floor(fpsrcop
): ceil(fpsrcop
);
2661 ST0
-= (ST1
* fpsrcop
* fptemp
);
2665 void helper_fprem(void)
2667 CPU86_LDouble dblq
, fpsrcop
, fptemp
;
2668 CPU86_LDoubleU fpsrcop1
, fptemp1
;
2674 fpsrcop1
.d
= fpsrcop
;
2676 expdif
= EXPD(fpsrcop1
) - EXPD(fptemp1
);
2677 if ( expdif
< 53 ) {
2678 dblq
= fpsrcop
/ fptemp
;
2679 dblq
= (dblq
< 0.0)? ceil(dblq
): floor(dblq
);
2680 ST0
= fpsrcop
- fptemp
*dblq
;
2681 q
= (int)dblq
; /* cutting off top bits is assumed here */
2682 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2683 /* (C0,C1,C3) <-- (q2,q1,q0) */
2684 env
->fpus
|= (q
&0x4) << 6; /* (C0) <-- q2 */
2685 env
->fpus
|= (q
&0x2) << 8; /* (C1) <-- q1 */
2686 env
->fpus
|= (q
&0x1) << 14; /* (C3) <-- q0 */
2688 env
->fpus
|= 0x400; /* C2 <-- 1 */
2689 fptemp
= pow(2.0, expdif
-50);
2690 fpsrcop
= (ST0
/ ST1
) / fptemp
;
2691 /* fpsrcop = integer obtained by chopping */
2692 fpsrcop
= (fpsrcop
< 0.0)?
2693 -(floor(fabs(fpsrcop
))): floor(fpsrcop
);
2694 ST0
-= (ST1
* fpsrcop
* fptemp
);
2698 void helper_fyl2xp1(void)
2700 CPU86_LDouble fptemp
;
2703 if ((fptemp
+1.0)>0.0) {
2704 fptemp
= log(fptemp
+1.0) / log(2.0); /* log2(ST+1.0) */
2708 env
->fpus
&= (~0x4700);
2713 void helper_fsqrt(void)
2715 CPU86_LDouble fptemp
;
2719 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2725 void helper_fsincos(void)
2727 CPU86_LDouble fptemp
;
2730 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2736 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2737 /* the above code is for |arg| < 2**63 only */
2741 void helper_frndint(void)
2747 switch(env
->fpuc
& RC_MASK
) {
2750 asm("rndd %0, %1" : "=f" (a
) : "f"(a
));
2753 asm("rnddm %0, %1" : "=f" (a
) : "f"(a
));
2756 asm("rnddp %0, %1" : "=f" (a
) : "f"(a
));
2759 asm("rnddz %0, %1" : "=f" (a
) : "f"(a
));
2768 void helper_fscale(void)
2770 CPU86_LDouble fpsrcop
, fptemp
;
2773 fptemp
= pow(fpsrcop
,ST1
);
2777 void helper_fsin(void)
2779 CPU86_LDouble fptemp
;
2782 if ((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2786 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2787 /* the above code is for |arg| < 2**53 only */
2791 void helper_fcos(void)
2793 CPU86_LDouble fptemp
;
2796 if((fptemp
> MAXTAN
)||(fptemp
< -MAXTAN
)) {
2800 env
->fpus
&= (~0x400); /* C2 <-- 0 */
2801 /* the above code is for |arg5 < 2**63 only */
2805 void helper_fxam_ST0(void)
2807 CPU86_LDoubleU temp
;
2812 env
->fpus
&= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
2814 env
->fpus
|= 0x200; /* C1 <-- 1 */
2816 expdif
= EXPD(temp
);
2817 if (expdif
== MAXEXPD
) {
2818 if (MANTD(temp
) == 0)
2819 env
->fpus
|= 0x500 /*Infinity*/;
2821 env
->fpus
|= 0x100 /*NaN*/;
2822 } else if (expdif
== 0) {
2823 if (MANTD(temp
) == 0)
2824 env
->fpus
|= 0x4000 /*Zero*/;
2826 env
->fpus
|= 0x4400 /*Denormal*/;
2832 void helper_fstenv(target_ulong ptr
, int data32
)
2834 int fpus
, fptag
, exp
, i
;
2838 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2840 for (i
=7; i
>=0; i
--) {
2842 if (env
->fptags
[i
]) {
2845 tmp
.d
= env
->fpregs
[i
].d
;
2848 if (exp
== 0 && mant
== 0) {
2851 } else if (exp
== 0 || exp
== MAXEXPD
2852 #ifdef USE_X86LDOUBLE
2853 || (mant
& (1LL << 63)) == 0
2856 /* NaNs, infinity, denormal */
2863 stl(ptr
, env
->fpuc
);
2865 stl(ptr
+ 8, fptag
);
2866 stl(ptr
+ 12, 0); /* fpip */
2867 stl(ptr
+ 16, 0); /* fpcs */
2868 stl(ptr
+ 20, 0); /* fpoo */
2869 stl(ptr
+ 24, 0); /* fpos */
2872 stw(ptr
, env
->fpuc
);
2874 stw(ptr
+ 4, fptag
);
2882 void helper_fldenv(target_ulong ptr
, int data32
)
2887 env
->fpuc
= lduw(ptr
);
2888 fpus
= lduw(ptr
+ 4);
2889 fptag
= lduw(ptr
+ 8);
2892 env
->fpuc
= lduw(ptr
);
2893 fpus
= lduw(ptr
+ 2);
2894 fptag
= lduw(ptr
+ 4);
2896 env
->fpstt
= (fpus
>> 11) & 7;
2897 env
->fpus
= fpus
& ~0x3800;
2898 for(i
= 0;i
< 8; i
++) {
2899 env
->fptags
[i
] = ((fptag
& 3) == 3);
2904 void helper_fsave(target_ulong ptr
, int data32
)
2909 helper_fstenv(ptr
, data32
);
2911 ptr
+= (14 << data32
);
2912 for(i
= 0;i
< 8; i
++) {
2914 helper_fstt(tmp
, ptr
);
2932 void helper_frstor(target_ulong ptr
, int data32
)
2937 helper_fldenv(ptr
, data32
);
2938 ptr
+= (14 << data32
);
2940 for(i
= 0;i
< 8; i
++) {
2941 tmp
= helper_fldt(ptr
);
2947 void helper_fxsave(target_ulong ptr
, int data64
)
2949 int fpus
, fptag
, i
, nb_xmm_regs
;
2953 fpus
= (env
->fpus
& ~0x3800) | (env
->fpstt
& 0x7) << 11;
2955 for(i
= 0; i
< 8; i
++) {
2956 fptag
|= (env
->fptags
[i
] << i
);
2958 stw(ptr
, env
->fpuc
);
2960 stw(ptr
+ 4, fptag
^ 0xff);
2963 for(i
= 0;i
< 8; i
++) {
2965 helper_fstt(tmp
, addr
);
2969 if (env
->cr
[4] & CR4_OSFXSR_MASK
) {
2970 /* XXX: finish it */
2971 stl(ptr
+ 0x18, env
->mxcsr
); /* mxcsr */
2972 stl(ptr
+ 0x1c, 0x0000ffff); /* mxcsr_mask */
2973 nb_xmm_regs
= 8 << data64
;
2975 for(i
= 0; i
< nb_xmm_regs
; i
++) {
2976 stq(addr
, env
->xmm_regs
[i
].XMM_Q(0));
2977 stq(addr
+ 8, env
->xmm_regs
[i
].XMM_Q(1));
2983 void helper_fxrstor(target_ulong ptr
, int data64
)
2985 int i
, fpus
, fptag
, nb_xmm_regs
;
2989 env
->fpuc
= lduw(ptr
);
2990 fpus
= lduw(ptr
+ 2);
2991 fptag
= lduw(ptr
+ 4);
2992 env
->fpstt
= (fpus
>> 11) & 7;
2993 env
->fpus
= fpus
& ~0x3800;
2995 for(i
= 0;i
< 8; i
++) {
2996 env
->fptags
[i
] = ((fptag
>> i
) & 1);
3000 for(i
= 0;i
< 8; i
++) {
3001 tmp
= helper_fldt(addr
);
3006 if (env
->cr
[4] & CR4_OSFXSR_MASK
) {
3007 /* XXX: finish it */
3008 env
->mxcsr
= ldl(ptr
+ 0x18);
3010 nb_xmm_regs
= 8 << data64
;
3012 for(i
= 0; i
< nb_xmm_regs
; i
++) {
3013 env
->xmm_regs
[i
].XMM_Q(0) = ldq(addr
);
3014 env
->xmm_regs
[i
].XMM_Q(1) = ldq(addr
+ 8);
3020 #ifndef USE_X86LDOUBLE
3022 void cpu_get_fp80(uint64_t *pmant
, uint16_t *pexp
, CPU86_LDouble f
)
3024 CPU86_LDoubleU temp
;
3029 *pmant
= (MANTD(temp
) << 11) | (1LL << 63);
3030 /* exponent + sign */
3031 e
= EXPD(temp
) - EXPBIAS
+ 16383;
3032 e
|= SIGND(temp
) >> 16;
3036 CPU86_LDouble
cpu_set_fp80(uint64_t mant
, uint16_t upper
)
3038 CPU86_LDoubleU temp
;
3042 /* XXX: handle overflow ? */
3043 e
= (upper
& 0x7fff) - 16383 + EXPBIAS
; /* exponent */
3044 e
|= (upper
>> 4) & 0x800; /* sign */
3045 ll
= (mant
>> 11) & ((1LL << 52) - 1);
3047 temp
.l
.upper
= (e
<< 20) | (ll
>> 32);
3050 temp
.ll
= ll
| ((uint64_t)e
<< 52);
3057 void cpu_get_fp80(uint64_t *pmant
, uint16_t *pexp
, CPU86_LDouble f
)
3059 CPU86_LDoubleU temp
;
3062 *pmant
= temp
.l
.lower
;
3063 *pexp
= temp
.l
.upper
;
3066 CPU86_LDouble
cpu_set_fp80(uint64_t mant
, uint16_t upper
)
3068 CPU86_LDoubleU temp
;
3070 temp
.l
.upper
= upper
;
3071 temp
.l
.lower
= mant
;
3076 #ifdef TARGET_X86_64
3078 //#define DEBUG_MULDIV
3080 static void add128(uint64_t *plow
, uint64_t *phigh
, uint64_t a
, uint64_t b
)
3089 static void neg128(uint64_t *plow
, uint64_t *phigh
)
3093 add128(plow
, phigh
, 1, 0);
3096 static void mul64(uint64_t *plow
, uint64_t *phigh
, uint64_t a
, uint64_t b
)
3098 uint32_t a0
, a1
, b0
, b1
;
3107 v
= (uint64_t)a0
* (uint64_t)b0
;
3111 v
= (uint64_t)a0
* (uint64_t)b1
;
3112 add128(plow
, phigh
, v
<< 32, v
>> 32);
3114 v
= (uint64_t)a1
* (uint64_t)b0
;
3115 add128(plow
, phigh
, v
<< 32, v
>> 32);
3117 v
= (uint64_t)a1
* (uint64_t)b1
;
3120 printf("mul: 0x%016llx * 0x%016llx = 0x%016llx%016llx\n",
3121 a
, b
, *phigh
, *plow
);
3125 static void imul64(uint64_t *plow
, uint64_t *phigh
, int64_t a
, int64_t b
)
3134 mul64(plow
, phigh
, a
, b
);
3136 neg128(plow
, phigh
);
3140 /* XXX: overflow support */
3141 static void div64(uint64_t *plow
, uint64_t *phigh
, uint64_t b
)
3143 uint64_t q
, r
, a1
, a0
;
3154 /* XXX: use a better algorithm */
3155 for(i
= 0; i
< 64; i
++) {
3156 a1
= (a1
<< 1) | (a0
>> 63);
3163 a0
= (a0
<< 1) | qb
;
3165 #if defined(DEBUG_MULDIV)
3166 printf("div: 0x%016llx%016llx / 0x%016llx: q=0x%016llx r=0x%016llx\n",
3167 *phigh
, *plow
, b
, a0
, a1
);
3174 static void idiv64(uint64_t *plow
, uint64_t *phigh
, int64_t b
)
3177 sa
= ((int64_t)*phigh
< 0);
3179 neg128(plow
, phigh
);
3183 div64(plow
, phigh
, b
);
3190 void helper_mulq_EAX_T0(void)
3194 mul64(&r0
, &r1
, EAX
, T0
);
3201 void helper_imulq_EAX_T0(void)
3205 imul64(&r0
, &r1
, EAX
, T0
);
3209 CC_SRC
= ((int64_t)r1
!= ((int64_t)r0
>> 63));
3212 void helper_imulq_T0_T1(void)
3216 imul64(&r0
, &r1
, T0
, T1
);
3219 CC_SRC
= ((int64_t)r1
!= ((int64_t)r0
>> 63));
3222 void helper_divq_EAX_T0(void)
3226 raise_exception(EXCP00_DIVZ
);
3230 div64(&r0
, &r1
, T0
);
3235 void helper_idivq_EAX_T0(void)
3239 raise_exception(EXCP00_DIVZ
);
3243 idiv64(&r0
, &r1
, T0
);
3251 int fpu_isnan(double a
)
3256 float approx_rsqrt(float a
)
3258 return 1.0 / sqrt(a
);
3261 float approx_rcp(float a
)
3266 /* XXX: find a better solution */
3267 double helper_sqrt(double a
)
3272 /* XXX: move that to another file */
3273 #if defined(__powerpc__)
3274 /* better to call an helper on ppc */
3275 float int32_to_float32(int32_t a
)
3280 double int32_to_float64(int32_t a
)
3286 #if !defined(CONFIG_USER_ONLY)
3288 #define MMUSUFFIX _mmu
3289 #define GETPC() (__builtin_return_address(0))
3292 #include "softmmu_template.h"
3295 #include "softmmu_template.h"
3298 #include "softmmu_template.h"
3301 #include "softmmu_template.h"
3305 /* try to fill the TLB and return an exception if error. If retaddr is
3306 NULL, it means that the function was called in C code (i.e. not
3307 from generated code or from helper.c) */
3308 /* XXX: fix it to restore all registers */
3309 void tlb_fill(target_ulong addr
, int is_write
, int is_user
, void *retaddr
)
3311 TranslationBlock
*tb
;
3314 CPUX86State
*saved_env
;
3316 /* XXX: hack to restore env in all cases, even if not called from
3319 env
= cpu_single_env
;
3321 ret
= cpu_x86_handle_mmu_fault(env
, addr
, is_write
, is_user
, 1);
3324 /* now we have a real cpu fault */
3325 pc
= (unsigned long)retaddr
;
3326 tb
= tb_find_pc(pc
);
3328 /* the PC is inside the translated code. It means that we have
3329 a virtual CPU fault */
3330 cpu_restore_state(tb
, env
, pc
, NULL
);
3334 raise_exception_err(EXCP0E_PAGE
, env
->error_code
);
3336 raise_exception_err_norestore(EXCP0E_PAGE
, env
->error_code
);