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Improve error reporting on file access
[qemu-kvm/fedora.git] / target-i386 / op_helper.c
blob6808a3596361c761be33d023ef93c0f48d187745
1 /*
2 * i386 helpers
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
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.
10 *
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.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #define CPU_NO_GLOBAL_REGS
20 #include "exec.h"
21 #include "exec-all.h"
22 #include "host-utils.h"
23
24 //#define DEBUG_PCALL
25
26
27 #ifdef DEBUG_PCALL
28 # define LOG_PCALL(...) qemu_log_mask(CPU_LOG_PCALL, ## __VA_ARGS__)
29 # define LOG_PCALL_STATE(env) \
30 log_cpu_state_mask(CPU_LOG_PCALL, (env), X86_DUMP_CCOP)
31 #else
32 # define LOG_PCALL(...) do { } while (0)
33 # define LOG_PCALL_STATE(env) do { } while (0)
34 #endif
35
36
37 #if 0
38 #define raise_exception_err(a, b)\
39 do {\
40 qemu_log("raise_exception line=%d\n", __LINE__);\
41 (raise_exception_err)(a, b);\
42 } while (0)
43 #endif
44
45 static const uint8_t parity_table[256] = {
46 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
47 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
48 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
49 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
50 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
51 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
52 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
53 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
54 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
55 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
56 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
57 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
58 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
59 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
60 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
61 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
62 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
63 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
64 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
65 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
66 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
67 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
68 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
69 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
70 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
71 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
72 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
73 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
74 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
75 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
76 CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
77 0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
78 };
79
80 /* modulo 17 table */
81 static const uint8_t rclw_table[32] = {
82 0, 1, 2, 3, 4, 5, 6, 7,
83 8, 9,10,11,12,13,14,15,
84 16, 0, 1, 2, 3, 4, 5, 6,
85 7, 8, 9,10,11,12,13,14,
86 };
87
88 /* modulo 9 table */
89 static const uint8_t rclb_table[32] = {
90 0, 1, 2, 3, 4, 5, 6, 7,
91 8, 0, 1, 2, 3, 4, 5, 6,
92 7, 8, 0, 1, 2, 3, 4, 5,
93 6, 7, 8, 0, 1, 2, 3, 4,
94 };
95
96 static const CPU86_LDouble f15rk[7] =
97 {
98 0.00000000000000000000L,
99 1.00000000000000000000L,
100 3.14159265358979323851L, /*pi*/
101 0.30102999566398119523L, /*lg2*/
102 0.69314718055994530943L, /*ln2*/
103 1.44269504088896340739L, /*l2e*/
104 3.32192809488736234781L, /*l2t*/
105 };
106
107 /* broken thread support */
108
109 static spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
110
111 void helper_lock(void)
112 {
113 spin_lock(&global_cpu_lock);
114 }
115
116 void helper_unlock(void)
117 {
118 spin_unlock(&global_cpu_lock);
119 }
120
121 void helper_write_eflags(target_ulong t0, uint32_t update_mask)
122 {
123 load_eflags(t0, update_mask);
124 }
125
126 target_ulong helper_read_eflags(void)
127 {
128 uint32_t eflags;
129 eflags = helper_cc_compute_all(CC_OP);
130 eflags |= (DF & DF_MASK);
131 eflags |= env->eflags & ~(VM_MASK | RF_MASK);
132 return eflags;
133 }
134
135 /* return non zero if error */
136 static inline int load_segment(uint32_t *e1_ptr, uint32_t *e2_ptr,
137 int selector)
138 {
139 SegmentCache *dt;
140 int index;
141 target_ulong ptr;
142
143 if (selector & 0x4)
144 dt = &env->ldt;
145 else
146 dt = &env->gdt;
147 index = selector & ~7;
148 if ((index + 7) > dt->limit)
149 return -1;
150 ptr = dt->base + index;
151 *e1_ptr = ldl_kernel(ptr);
152 *e2_ptr = ldl_kernel(ptr + 4);
153 return 0;
154 }
155
156 static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2)
157 {
158 unsigned int limit;
159 limit = (e1 & 0xffff) | (e2 & 0x000f0000);
160 if (e2 & DESC_G_MASK)
161 limit = (limit << 12) | 0xfff;
162 return limit;
163 }
164
165 static inline uint32_t get_seg_base(uint32_t e1, uint32_t e2)
166 {
167 return ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000));
168 }
169
170 static inline void load_seg_cache_raw_dt(SegmentCache *sc, uint32_t e1, uint32_t e2)
171 {
172 sc->base = get_seg_base(e1, e2);
173 sc->limit = get_seg_limit(e1, e2);
174 sc->flags = e2;
175 }
176
177 /* init the segment cache in vm86 mode. */
178 static inline void load_seg_vm(int seg, int selector)
179 {
180 selector &= 0xffff;
181 cpu_x86_load_seg_cache(env, seg, selector,
182 (selector << 4), 0xffff, 0);
183 }
184
185 static inline void get_ss_esp_from_tss(uint32_t *ss_ptr,
186 uint32_t *esp_ptr, int dpl)
187 {
188 int type, index, shift;
189
190 #if 0
191 {
192 int i;
193 printf("TR: base=%p limit=%x\n", env->tr.base, env->tr.limit);
194 for(i=0;i<env->tr.limit;i++) {
195 printf("%02x ", env->tr.base[i]);
196 if ((i & 7) == 7) printf("\n");
197 }
198 printf("\n");
199 }
200 #endif
201
202 if (!(env->tr.flags & DESC_P_MASK))
203 cpu_abort(env, "invalid tss");
204 type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
205 if ((type & 7) != 1)
206 cpu_abort(env, "invalid tss type");
207 shift = type >> 3;
208 index = (dpl * 4 + 2) << shift;
209 if (index + (4 << shift) - 1 > env->tr.limit)
210 raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
211 if (shift == 0) {
212 *esp_ptr = lduw_kernel(env->tr.base + index);
213 *ss_ptr = lduw_kernel(env->tr.base + index + 2);
214 } else {
215 *esp_ptr = ldl_kernel(env->tr.base + index);
216 *ss_ptr = lduw_kernel(env->tr.base + index + 4);
217 }
218 }
219
220 /* XXX: merge with load_seg() */
221 static void tss_load_seg(int seg_reg, int selector)
222 {
223 uint32_t e1, e2;
224 int rpl, dpl, cpl;
225
226 if ((selector & 0xfffc) != 0) {
227 if (load_segment(&e1, &e2, selector) != 0)
228 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
229 if (!(e2 & DESC_S_MASK))
230 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
231 rpl = selector & 3;
232 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
233 cpl = env->hflags & HF_CPL_MASK;
234 if (seg_reg == R_CS) {
235 if (!(e2 & DESC_CS_MASK))
236 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
237 /* XXX: is it correct ? */
238 if (dpl != rpl)
239 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
240 if ((e2 & DESC_C_MASK) && dpl > rpl)
241 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
242 } else if (seg_reg == R_SS) {
243 /* SS must be writable data */
244 if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
245 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
246 if (dpl != cpl || dpl != rpl)
247 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
248 } else {
249 /* not readable code */
250 if ((e2 & DESC_CS_MASK) && !(e2 & DESC_R_MASK))
251 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
252 /* if data or non conforming code, checks the rights */
253 if (((e2 >> DESC_TYPE_SHIFT) & 0xf) < 12) {
254 if (dpl < cpl || dpl < rpl)
255 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
256 }
257 }
258 if (!(e2 & DESC_P_MASK))
259 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
260 cpu_x86_load_seg_cache(env, seg_reg, selector,
261 get_seg_base(e1, e2),
262 get_seg_limit(e1, e2),
263 e2);
264 } else {
265 if (seg_reg == R_SS || seg_reg == R_CS)
266 raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
267 }
268 }
269
270 #define SWITCH_TSS_JMP 0
271 #define SWITCH_TSS_IRET 1
272 #define SWITCH_TSS_CALL 2
273
274 /* XXX: restore CPU state in registers (PowerPC case) */
275 static void switch_tss(int tss_selector,
276 uint32_t e1, uint32_t e2, int source,
277 uint32_t next_eip)
278 {
279 int tss_limit, tss_limit_max, type, old_tss_limit_max, old_type, v1, v2, i;
280 target_ulong tss_base;
281 uint32_t new_regs[8], new_segs[6];
282 uint32_t new_eflags, new_eip, new_cr3, new_ldt, new_trap;
283 uint32_t old_eflags, eflags_mask;
284 SegmentCache *dt;
285 int index;
286 target_ulong ptr;
287
288 type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
289 LOG_PCALL("switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector, type, source);
290
291 /* if task gate, we read the TSS segment and we load it */
292 if (type == 5) {
293 if (!(e2 & DESC_P_MASK))
294 raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
295 tss_selector = e1 >> 16;
296 if (tss_selector & 4)
297 raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
298 if (load_segment(&e1, &e2, tss_selector) != 0)
299 raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
300 if (e2 & DESC_S_MASK)
301 raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
302 type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
303 if ((type & 7) != 1)
304 raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
305 }
306
307 if (!(e2 & DESC_P_MASK))
308 raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
309
310 if (type & 8)
311 tss_limit_max = 103;
312 else
313 tss_limit_max = 43;
314 tss_limit = get_seg_limit(e1, e2);
315 tss_base = get_seg_base(e1, e2);
316 if ((tss_selector & 4) != 0 ||
317 tss_limit < tss_limit_max)
318 raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
319 old_type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
320 if (old_type & 8)
321 old_tss_limit_max = 103;
322 else
323 old_tss_limit_max = 43;
324
325 /* read all the registers from the new TSS */
326 if (type & 8) {
327 /* 32 bit */
328 new_cr3 = ldl_kernel(tss_base + 0x1c);
329 new_eip = ldl_kernel(tss_base + 0x20);
330 new_eflags = ldl_kernel(tss_base + 0x24);
331 for(i = 0; i < 8; i++)
332 new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4));
333 for(i = 0; i < 6; i++)
334 new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4));
335 new_ldt = lduw_kernel(tss_base + 0x60);
336 new_trap = ldl_kernel(tss_base + 0x64);
337 } else {
338 /* 16 bit */
339 new_cr3 = 0;
340 new_eip = lduw_kernel(tss_base + 0x0e);
341 new_eflags = lduw_kernel(tss_base + 0x10);
342 for(i = 0; i < 8; i++)
343 new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) | 0xffff0000;
344 for(i = 0; i < 4; i++)
345 new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4));
346 new_ldt = lduw_kernel(tss_base + 0x2a);
347 new_segs[R_FS] = 0;
348 new_segs[R_GS] = 0;
349 new_trap = 0;
350 }
351
352 /* NOTE: we must avoid memory exceptions during the task switch,
353 so we make dummy accesses before */
354 /* XXX: it can still fail in some cases, so a bigger hack is
355 necessary to valid the TLB after having done the accesses */
356
357 v1 = ldub_kernel(env->tr.base);
358 v2 = ldub_kernel(env->tr.base + old_tss_limit_max);
359 stb_kernel(env->tr.base, v1);
360 stb_kernel(env->tr.base + old_tss_limit_max, v2);
361
362 /* clear busy bit (it is restartable) */
363 if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
364 target_ulong ptr;
365 uint32_t e2;
366 ptr = env->gdt.base + (env->tr.selector & ~7);
367 e2 = ldl_kernel(ptr + 4);
368 e2 &= ~DESC_TSS_BUSY_MASK;
369 stl_kernel(ptr + 4, e2);
370 }
371 old_eflags = compute_eflags();
372 if (source == SWITCH_TSS_IRET)
373 old_eflags &= ~NT_MASK;
374
375 /* save the current state in the old TSS */
376 if (type & 8) {
377 /* 32 bit */
378 stl_kernel(env->tr.base + 0x20, next_eip);
379 stl_kernel(env->tr.base + 0x24, old_eflags);
380 stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX);
381 stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX);
382 stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX);
383 stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX);
384 stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP);
385 stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP);
386 stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI);
387 stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI);
388 for(i = 0; i < 6; i++)
389 stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector);
390 } else {
391 /* 16 bit */
392 stw_kernel(env->tr.base + 0x0e, next_eip);
393 stw_kernel(env->tr.base + 0x10, old_eflags);
394 stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX);
395 stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX);
396 stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX);
397 stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX);
398 stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP);
399 stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP);
400 stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI);
401 stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI);
402 for(i = 0; i < 4; i++)
403 stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector);
404 }
405
406 /* now if an exception occurs, it will occurs in the next task
407 context */
408
409 if (source == SWITCH_TSS_CALL) {
410 stw_kernel(tss_base, env->tr.selector);
411 new_eflags |= NT_MASK;
412 }
413
414 /* set busy bit */
415 if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_CALL) {
416 target_ulong ptr;
417 uint32_t e2;
418 ptr = env->gdt.base + (tss_selector & ~7);
419 e2 = ldl_kernel(ptr + 4);
420 e2 |= DESC_TSS_BUSY_MASK;
421 stl_kernel(ptr + 4, e2);
422 }
423
424 /* set the new CPU state */
425 /* from this point, any exception which occurs can give problems */
426 env->cr[0] |= CR0_TS_MASK;
427 env->hflags |= HF_TS_MASK;
428 env->tr.selector = tss_selector;
429 env->tr.base = tss_base;
430 env->tr.limit = tss_limit;
431 env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK;
432
433 if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) {
434 cpu_x86_update_cr3(env, new_cr3);
435 }
436
437 /* load all registers without an exception, then reload them with
438 possible exception */
439 env->eip = new_eip;
440 eflags_mask = TF_MASK | AC_MASK | ID_MASK |
441 IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK;
442 if (!(type & 8))
443 eflags_mask &= 0xffff;
444 load_eflags(new_eflags, eflags_mask);
445 /* XXX: what to do in 16 bit case ? */
446 EAX = new_regs[0];
447 ECX = new_regs[1];
448 EDX = new_regs[2];
449 EBX = new_regs[3];
450 ESP = new_regs[4];
451 EBP = new_regs[5];
452 ESI = new_regs[6];
453 EDI = new_regs[7];
454 if (new_eflags & VM_MASK) {
455 for(i = 0; i < 6; i++)
456 load_seg_vm(i, new_segs[i]);
457 /* in vm86, CPL is always 3 */
458 cpu_x86_set_cpl(env, 3);
459 } else {
460 /* CPL is set the RPL of CS */
461 cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
462 /* first just selectors as the rest may trigger exceptions */
463 for(i = 0; i < 6; i++)
464 cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0);
465 }
466
467 env->ldt.selector = new_ldt & ~4;
468 env->ldt.base = 0;
469 env->ldt.limit = 0;
470 env->ldt.flags = 0;
471
472 /* load the LDT */
473 if (new_ldt & 4)
474 raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
475
476 if ((new_ldt & 0xfffc) != 0) {
477 dt = &env->gdt;
478 index = new_ldt & ~7;
479 if ((index + 7) > dt->limit)
480 raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
481 ptr = dt->base + index;
482 e1 = ldl_kernel(ptr);
483 e2 = ldl_kernel(ptr + 4);
484 if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2)
485 raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
486 if (!(e2 & DESC_P_MASK))
487 raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
488 load_seg_cache_raw_dt(&env->ldt, e1, e2);
489 }
490
491 /* load the segments */
492 if (!(new_eflags & VM_MASK)) {
493 tss_load_seg(R_CS, new_segs[R_CS]);
494 tss_load_seg(R_SS, new_segs[R_SS]);
495 tss_load_seg(R_ES, new_segs[R_ES]);
496 tss_load_seg(R_DS, new_segs[R_DS]);
497 tss_load_seg(R_FS, new_segs[R_FS]);
498 tss_load_seg(R_GS, new_segs[R_GS]);
499 }
500
501 /* check that EIP is in the CS segment limits */
502 if (new_eip > env->segs[R_CS].limit) {
503 /* XXX: different exception if CALL ? */
504 raise_exception_err(EXCP0D_GPF, 0);
505 }
506
507 #ifndef CONFIG_USER_ONLY
508 /* reset local breakpoints */
509 if (env->dr[7] & 0x55) {
510 for (i = 0; i < 4; i++) {
511 if (hw_breakpoint_enabled(env->dr[7], i) == 0x1)
512 hw_breakpoint_remove(env, i);
513 }
514 env->dr[7] &= ~0x55;
515 }
516 #endif
517 }
518
519 /* check if Port I/O is allowed in TSS */
520 static inline void check_io(int addr, int size)
521 {
522 int io_offset, val, mask;
523
524 /* TSS must be a valid 32 bit one */
525 if (!(env->tr.flags & DESC_P_MASK) ||
526 ((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 ||
527 env->tr.limit < 103)
528 goto fail;
529 io_offset = lduw_kernel(env->tr.base + 0x66);
530 io_offset += (addr >> 3);
531 /* Note: the check needs two bytes */
532 if ((io_offset + 1) > env->tr.limit)
533 goto fail;
534 val = lduw_kernel(env->tr.base + io_offset);
535 val >>= (addr & 7);
536 mask = (1 << size) - 1;
537 /* all bits must be zero to allow the I/O */
538 if ((val & mask) != 0) {
539 fail:
540 raise_exception_err(EXCP0D_GPF, 0);
541 }
542 }
543
544 void helper_check_iob(uint32_t t0)
545 {
546 check_io(t0, 1);
547 }
548
549 void helper_check_iow(uint32_t t0)
550 {
551 check_io(t0, 2);
552 }
553
554 void helper_check_iol(uint32_t t0)
555 {
556 check_io(t0, 4);
557 }
558
559 void helper_outb(uint32_t port, uint32_t data)
560 {
561 cpu_outb(env, port, data & 0xff);
562 }
563
564 target_ulong helper_inb(uint32_t port)
565 {
566 return cpu_inb(env, port);
567 }
568
569 void helper_outw(uint32_t port, uint32_t data)
570 {
571 cpu_outw(env, port, data & 0xffff);
572 }
573
574 target_ulong helper_inw(uint32_t port)
575 {
576 return cpu_inw(env, port);
577 }
578
579 void helper_outl(uint32_t port, uint32_t data)
580 {
581 cpu_outl(env, port, data);
582 }
583
584 target_ulong helper_inl(uint32_t port)
585 {
586 return cpu_inl(env, port);
587 }
588
589 static inline unsigned int get_sp_mask(unsigned int e2)
590 {
591 if (e2 & DESC_B_MASK)
592 return 0xffffffff;
593 else
594 return 0xffff;
595 }
596
597 static int exeption_has_error_code(int intno)
598 {
599 switch(intno) {
600 case 8:
601 case 10:
602 case 11:
603 case 12:
604 case 13:
605 case 14:
606 case 17:
607 return 1;
608 }
609 return 0;
610 }
611
612 #ifdef TARGET_X86_64
613 #define SET_ESP(val, sp_mask)\
614 do {\
615 if ((sp_mask) == 0xffff)\
616 ESP = (ESP & ~0xffff) | ((val) & 0xffff);\
617 else if ((sp_mask) == 0xffffffffLL)\
618 ESP = (uint32_t)(val);\
619 else\
620 ESP = (val);\
621 } while (0)
622 #else
623 #define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
624 #endif
625
626 /* in 64-bit machines, this can overflow. So this segment addition macro
627 * can be used to trim the value to 32-bit whenever needed */
628 #define SEG_ADDL(ssp, sp, sp_mask) ((uint32_t)((ssp) + (sp & (sp_mask))))
629
630 /* XXX: add a is_user flag to have proper security support */
631 #define PUSHW(ssp, sp, sp_mask, val)\
632 {\
633 sp -= 2;\
634 stw_kernel((ssp) + (sp & (sp_mask)), (val));\
635 }
636
637 #define PUSHL(ssp, sp, sp_mask, val)\
638 {\
639 sp -= 4;\
640 stl_kernel(SEG_ADDL(ssp, sp, sp_mask), (uint32_t)(val));\
641 }
642
643 #define POPW(ssp, sp, sp_mask, val)\
644 {\
645 val = lduw_kernel((ssp) + (sp & (sp_mask)));\
646 sp += 2;\
647 }
648
649 #define POPL(ssp, sp, sp_mask, val)\
650 {\
651 val = (uint32_t)ldl_kernel(SEG_ADDL(ssp, sp, sp_mask));\
652 sp += 4;\
653 }
654
655 /* protected mode interrupt */
656 static void do_interrupt_protected(int intno, int is_int, int error_code,
657 unsigned int next_eip, int is_hw)
658 {
659 SegmentCache *dt;
660 target_ulong ptr, ssp;
661 int type, dpl, selector, ss_dpl, cpl;
662 int has_error_code, new_stack, shift;
663 uint32_t e1, e2, offset, ss = 0, esp, ss_e1 = 0, ss_e2 = 0;
664 uint32_t old_eip, sp_mask;
665
666 has_error_code = 0;
667 if (!is_int && !is_hw)
668 has_error_code = exeption_has_error_code(intno);
669 if (is_int)
670 old_eip = next_eip;
671 else
672 old_eip = env->eip;
673
674 dt = &env->idt;
675 if (intno * 8 + 7 > dt->limit)
676 raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
677 ptr = dt->base + intno * 8;
678 e1 = ldl_kernel(ptr);
679 e2 = ldl_kernel(ptr + 4);
680 /* check gate type */
681 type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
682 switch(type) {
683 case 5: /* task gate */
684 /* must do that check here to return the correct error code */
685 if (!(e2 & DESC_P_MASK))
686 raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
687 switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
688 if (has_error_code) {
689 int type;
690 uint32_t mask;
691 /* push the error code */
692 type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
693 shift = type >> 3;
694 if (env->segs[R_SS].flags & DESC_B_MASK)
695 mask = 0xffffffff;
696 else
697 mask = 0xffff;
698 esp = (ESP - (2 << shift)) & mask;
699 ssp = env->segs[R_SS].base + esp;
700 if (shift)
701 stl_kernel(ssp, error_code);
702 else
703 stw_kernel(ssp, error_code);
704 SET_ESP(esp, mask);
705 }
706 return;
707 case 6: /* 286 interrupt gate */
708 case 7: /* 286 trap gate */
709 case 14: /* 386 interrupt gate */
710 case 15: /* 386 trap gate */
711 break;
712 default:
713 raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
714 break;
715 }
716 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
717 cpl = env->hflags & HF_CPL_MASK;
718 /* check privilege if software int */
719 if (is_int && dpl < cpl)
720 raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
721 /* check valid bit */
722 if (!(e2 & DESC_P_MASK))
723 raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
724 selector = e1 >> 16;
725 offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff);
726 if ((selector & 0xfffc) == 0)
727 raise_exception_err(EXCP0D_GPF, 0);
728
729 if (load_segment(&e1, &e2, selector) != 0)
730 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
731 if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
732 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
733 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
734 if (dpl > cpl)
735 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
736 if (!(e2 & DESC_P_MASK))
737 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
738 if (!(e2 & DESC_C_MASK) && dpl < cpl) {
739 /* to inner privilege */
740 get_ss_esp_from_tss(&ss, &esp, dpl);
741 if ((ss & 0xfffc) == 0)
742 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
743 if ((ss & 3) != dpl)
744 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
745 if (load_segment(&ss_e1, &ss_e2, ss) != 0)
746 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
747 ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
748 if (ss_dpl != dpl)
749 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
750 if (!(ss_e2 & DESC_S_MASK) ||
751 (ss_e2 & DESC_CS_MASK) ||
752 !(ss_e2 & DESC_W_MASK))
753 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
754 if (!(ss_e2 & DESC_P_MASK))
755 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
756 new_stack = 1;
757 sp_mask = get_sp_mask(ss_e2);
758 ssp = get_seg_base(ss_e1, ss_e2);
759 } else if ((e2 & DESC_C_MASK) || dpl == cpl) {
760 /* to same privilege */
761 if (env->eflags & VM_MASK)
762 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
763 new_stack = 0;
764 sp_mask = get_sp_mask(env->segs[R_SS].flags);
765 ssp = env->segs[R_SS].base;
766 esp = ESP;
767 dpl = cpl;
768 } else {
769 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
770 new_stack = 0; /* avoid warning */
771 sp_mask = 0; /* avoid warning */
772 ssp = 0; /* avoid warning */
773 esp = 0; /* avoid warning */
774 }
775
776 shift = type >> 3;
777
778 #if 0
779 /* XXX: check that enough room is available */
780 push_size = 6 + (new_stack << 2) + (has_error_code << 1);
781 if (env->eflags & VM_MASK)
782 push_size += 8;
783 push_size <<= shift;
784 #endif
785 if (shift == 1) {
786 if (new_stack) {
787 if (env->eflags & VM_MASK) {
788 PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector);
789 PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector);
790 PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector);
791 PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector);
792 }
793 PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector);
794 PUSHL(ssp, esp, sp_mask, ESP);
795 }
796 PUSHL(ssp, esp, sp_mask, compute_eflags());
797 PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector);
798 PUSHL(ssp, esp, sp_mask, old_eip);
799 if (has_error_code) {
800 PUSHL(ssp, esp, sp_mask, error_code);
801 }
802 } else {
803 if (new_stack) {
804 if (env->eflags & VM_MASK) {
805 PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector);
806 PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector);
807 PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector);
808 PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector);
809 }
810 PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector);
811 PUSHW(ssp, esp, sp_mask, ESP);
812 }
813 PUSHW(ssp, esp, sp_mask, compute_eflags());
814 PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector);
815 PUSHW(ssp, esp, sp_mask, old_eip);
816 if (has_error_code) {
817 PUSHW(ssp, esp, sp_mask, error_code);
818 }
819 }
820
821 if (new_stack) {
822 if (env->eflags & VM_MASK) {
823 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0);
824 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0);
825 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0);
826 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0);
827 }
828 ss = (ss & ~3) | dpl;
829 cpu_x86_load_seg_cache(env, R_SS, ss,
830 ssp, get_seg_limit(ss_e1, ss_e2), ss_e2);
831 }
832 SET_ESP(esp, sp_mask);
833
834 selector = (selector & ~3) | dpl;
835 cpu_x86_load_seg_cache(env, R_CS, selector,
836 get_seg_base(e1, e2),
837 get_seg_limit(e1, e2),
838 e2);
839 cpu_x86_set_cpl(env, dpl);
840 env->eip = offset;
841
842 /* interrupt gate clear IF mask */
843 if ((type & 1) == 0) {
844 env->eflags &= ~IF_MASK;
845 }
846 env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
847 }
848
849 #ifdef TARGET_X86_64
850
851 #define PUSHQ(sp, val)\
852 {\
853 sp -= 8;\
854 stq_kernel(sp, (val));\
855 }
856
857 #define POPQ(sp, val)\
858 {\
859 val = ldq_kernel(sp);\
860 sp += 8;\
861 }
862
863 static inline target_ulong get_rsp_from_tss(int level)
864 {
865 int index;
866
867 #if 0
868 printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
869 env->tr.base, env->tr.limit);
870 #endif
871
872 if (!(env->tr.flags & DESC_P_MASK))
873 cpu_abort(env, "invalid tss");
874 index = 8 * level + 4;
875 if ((index + 7) > env->tr.limit)
876 raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
877 return ldq_kernel(env->tr.base + index);
878 }
879
880 /* 64 bit interrupt */
881 static void do_interrupt64(int intno, int is_int, int error_code,
882 target_ulong next_eip, int is_hw)
883 {
884 SegmentCache *dt;
885 target_ulong ptr;
886 int type, dpl, selector, cpl, ist;
887 int has_error_code, new_stack;
888 uint32_t e1, e2, e3, ss;
889 target_ulong old_eip, esp, offset;
890
891 has_error_code = 0;
892 if (!is_int && !is_hw)
893 has_error_code = exeption_has_error_code(intno);
894 if (is_int)
895 old_eip = next_eip;
896 else
897 old_eip = env->eip;
898
899 dt = &env->idt;
900 if (intno * 16 + 15 > dt->limit)
901 raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
902 ptr = dt->base + intno * 16;
903 e1 = ldl_kernel(ptr);
904 e2 = ldl_kernel(ptr + 4);
905 e3 = ldl_kernel(ptr + 8);
906 /* check gate type */
907 type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
908 switch(type) {
909 case 14: /* 386 interrupt gate */
910 case 15: /* 386 trap gate */
911 break;
912 default:
913 raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
914 break;
915 }
916 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
917 cpl = env->hflags & HF_CPL_MASK;
918 /* check privilege if software int */
919 if (is_int && dpl < cpl)
920 raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
921 /* check valid bit */
922 if (!(e2 & DESC_P_MASK))
923 raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2);
924 selector = e1 >> 16;
925 offset = ((target_ulong)e3 << 32) | (e2 & 0xffff0000) | (e1 & 0x0000ffff);
926 ist = e2 & 7;
927 if ((selector & 0xfffc) == 0)
928 raise_exception_err(EXCP0D_GPF, 0);
929
930 if (load_segment(&e1, &e2, selector) != 0)
931 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
932 if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
933 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
934 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
935 if (dpl > cpl)
936 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
937 if (!(e2 & DESC_P_MASK))
938 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
939 if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
940 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
941 if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) {
942 /* to inner privilege */
943 if (ist != 0)
944 esp = get_rsp_from_tss(ist + 3);
945 else
946 esp = get_rsp_from_tss(dpl);
947 esp &= ~0xfLL; /* align stack */
948 ss = 0;
949 new_stack = 1;
950 } else if ((e2 & DESC_C_MASK) || dpl == cpl) {
951 /* to same privilege */
952 if (env->eflags & VM_MASK)
953 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
954 new_stack = 0;
955 if (ist != 0)
956 esp = get_rsp_from_tss(ist + 3);
957 else
958 esp = ESP;
959 esp &= ~0xfLL; /* align stack */
960 dpl = cpl;
961 } else {
962 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
963 new_stack = 0; /* avoid warning */
964 esp = 0; /* avoid warning */
965 }
966
967 PUSHQ(esp, env->segs[R_SS].selector);
968 PUSHQ(esp, ESP);
969 PUSHQ(esp, compute_eflags());
970 PUSHQ(esp, env->segs[R_CS].selector);
971 PUSHQ(esp, old_eip);
972 if (has_error_code) {
973 PUSHQ(esp, error_code);
974 }
975
976 if (new_stack) {
977 ss = 0 | dpl;
978 cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0);
979 }
980 ESP = esp;
981
982 selector = (selector & ~3) | dpl;
983 cpu_x86_load_seg_cache(env, R_CS, selector,
984 get_seg_base(e1, e2),
985 get_seg_limit(e1, e2),
986 e2);
987 cpu_x86_set_cpl(env, dpl);
988 env->eip = offset;
989
990 /* interrupt gate clear IF mask */
991 if ((type & 1) == 0) {
992 env->eflags &= ~IF_MASK;
993 }
994 env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK);
995 }
996 #endif
997
998 #ifdef TARGET_X86_64
999 #if defined(CONFIG_USER_ONLY)
1000 void helper_syscall(int next_eip_addend)
1001 {
1002 env->exception_index = EXCP_SYSCALL;
1003 env->exception_next_eip = env->eip + next_eip_addend;
1004 cpu_loop_exit();
1005 }
1006 #else
1007 void helper_syscall(int next_eip_addend)
1008 {
1009 int selector;
1010
1011 if (!(env->efer & MSR_EFER_SCE)) {
1012 raise_exception_err(EXCP06_ILLOP, 0);
1013 }
1014 selector = (env->star >> 32) & 0xffff;
1015 if (env->hflags & HF_LMA_MASK) {
1016 int code64;
1017
1018 ECX = env->eip + next_eip_addend;
1019 env->regs[11] = compute_eflags();
1020
1021 code64 = env->hflags & HF_CS64_MASK;
1022
1023 cpu_x86_set_cpl(env, 0);
1024 cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
1025 0, 0xffffffff,
1026 DESC_G_MASK | DESC_P_MASK |
1027 DESC_S_MASK |
1028 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK);
1029 cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
1030 0, 0xffffffff,
1031 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1032 DESC_S_MASK |
1033 DESC_W_MASK | DESC_A_MASK);
1034 env->eflags &= ~env->fmask;
1035 load_eflags(env->eflags, 0);
1036 if (code64)
1037 env->eip = env->lstar;
1038 else
1039 env->eip = env->cstar;
1040 } else {
1041 ECX = (uint32_t)(env->eip + next_eip_addend);
1042
1043 cpu_x86_set_cpl(env, 0);
1044 cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
1045 0, 0xffffffff,
1046 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1047 DESC_S_MASK |
1048 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
1049 cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
1050 0, 0xffffffff,
1051 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1052 DESC_S_MASK |
1053 DESC_W_MASK | DESC_A_MASK);
1054 env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK);
1055 env->eip = (uint32_t)env->star;
1056 }
1057 }
1058 #endif
1059 #endif
1060
1061 #ifdef TARGET_X86_64
1062 void helper_sysret(int dflag)
1063 {
1064 int cpl, selector;
1065
1066 if (!(env->efer & MSR_EFER_SCE)) {
1067 raise_exception_err(EXCP06_ILLOP, 0);
1068 }
1069 cpl = env->hflags & HF_CPL_MASK;
1070 if (!(env->cr[0] & CR0_PE_MASK) || cpl != 0) {
1071 raise_exception_err(EXCP0D_GPF, 0);
1072 }
1073 selector = (env->star >> 48) & 0xffff;
1074 if (env->hflags & HF_LMA_MASK) {
1075 if (dflag == 2) {
1076 cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3,
1077 0, 0xffffffff,
1078 DESC_G_MASK | DESC_P_MASK |
1079 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
1080 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK |
1081 DESC_L_MASK);
1082 env->eip = ECX;
1083 } else {
1084 cpu_x86_load_seg_cache(env, R_CS, selector | 3,
1085 0, 0xffffffff,
1086 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1087 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
1088 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
1089 env->eip = (uint32_t)ECX;
1090 }
1091 cpu_x86_load_seg_cache(env, R_SS, selector + 8,
1092 0, 0xffffffff,
1093 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1094 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
1095 DESC_W_MASK | DESC_A_MASK);
1096 load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
1097 IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK);
1098 cpu_x86_set_cpl(env, 3);
1099 } else {
1100 cpu_x86_load_seg_cache(env, R_CS, selector | 3,
1101 0, 0xffffffff,
1102 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1103 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
1104 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
1105 env->eip = (uint32_t)ECX;
1106 cpu_x86_load_seg_cache(env, R_SS, selector + 8,
1107 0, 0xffffffff,
1108 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
1109 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
1110 DESC_W_MASK | DESC_A_MASK);
1111 env->eflags |= IF_MASK;
1112 cpu_x86_set_cpl(env, 3);
1113 }
1114 #ifdef CONFIG_KQEMU
1115 if (kqemu_is_ok(env)) {
1116 if (env->hflags & HF_LMA_MASK)
1117 CC_OP = CC_OP_EFLAGS;
1118 env->exception_index = -1;
1119 cpu_loop_exit();
1120 }
1121 #endif
1122 }
1123 #endif
1124
1125 /* real mode interrupt */
1126 static void do_interrupt_real(int intno, int is_int, int error_code,
1127 unsigned int next_eip)
1128 {
1129 SegmentCache *dt;
1130 target_ulong ptr, ssp;
1131 int selector;
1132 uint32_t offset, esp;
1133 uint32_t old_cs, old_eip;
1134
1135 /* real mode (simpler !) */
1136 dt = &env->idt;
1137 if (intno * 4 + 3 > dt->limit)
1138 raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
1139 ptr = dt->base + intno * 4;
1140 offset = lduw_kernel(ptr);
1141 selector = lduw_kernel(ptr + 2);
1142 esp = ESP;
1143 ssp = env->segs[R_SS].base;
1144 if (is_int)
1145 old_eip = next_eip;
1146 else
1147 old_eip = env->eip;
1148 old_cs = env->segs[R_CS].selector;
1149 /* XXX: use SS segment size ? */
1150 PUSHW(ssp, esp, 0xffff, compute_eflags());
1151 PUSHW(ssp, esp, 0xffff, old_cs);
1152 PUSHW(ssp, esp, 0xffff, old_eip);
1153
1154 /* update processor state */
1155 ESP = (ESP & ~0xffff) | (esp & 0xffff);
1156 env->eip = offset;
1157 env->segs[R_CS].selector = selector;
1158 env->segs[R_CS].base = (selector << 4);
1159 env->eflags &= ~(IF_MASK | TF_MASK | AC_MASK | RF_MASK);
1160 }
1161
1162 /* fake user mode interrupt */
1163 void do_interrupt_user(int intno, int is_int, int error_code,
1164 target_ulong next_eip)
1165 {
1166 SegmentCache *dt;
1167 target_ulong ptr;
1168 int dpl, cpl, shift;
1169 uint32_t e2;
1170
1171 dt = &env->idt;
1172 if (env->hflags & HF_LMA_MASK) {
1173 shift = 4;
1174 } else {
1175 shift = 3;
1176 }
1177 ptr = dt->base + (intno << shift);
1178 e2 = ldl_kernel(ptr + 4);
1179
1180 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
1181 cpl = env->hflags & HF_CPL_MASK;
1182 /* check privilege if software int */
1183 if (is_int && dpl < cpl)
1184 raise_exception_err(EXCP0D_GPF, (intno << shift) + 2);
1185
1186 /* Since we emulate only user space, we cannot do more than
1187 exiting the emulation with the suitable exception and error
1188 code */
1189 if (is_int)
1190 EIP = next_eip;
1191 }
1192
1193 #if !defined(CONFIG_USER_ONLY)
1194 static void handle_even_inj(int intno, int is_int, int error_code,
1195 int is_hw, int rm)
1196 {
1197 uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
1198 if (!(event_inj & SVM_EVTINJ_VALID)) {
1199 int type;
1200 if (is_int)
1201 type = SVM_EVTINJ_TYPE_SOFT;
1202 else
1203 type = SVM_EVTINJ_TYPE_EXEPT;
1204 event_inj = intno | type | SVM_EVTINJ_VALID;
1205 if (!rm && exeption_has_error_code(intno)) {
1206 event_inj |= SVM_EVTINJ_VALID_ERR;
1207 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err), error_code);
1208 }
1209 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj);
1210 }
1211 }
1212 #endif
1213
1214 /*
1215 * Begin execution of an interruption. is_int is TRUE if coming from
1216 * the int instruction. next_eip is the EIP value AFTER the interrupt
1217 * instruction. It is only relevant if is_int is TRUE.
1218 */
1219 void do_interrupt(int intno, int is_int, int error_code,
1220 target_ulong next_eip, int is_hw)
1221 {
1222 if (qemu_loglevel_mask(CPU_LOG_INT)) {
1223 if ((env->cr[0] & CR0_PE_MASK)) {
1224 static int count;
1225 qemu_log("%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:" TARGET_FMT_lx " pc=" TARGET_FMT_lx " SP=%04x:" TARGET_FMT_lx,
1226 count, intno, error_code, is_int,
1227 env->hflags & HF_CPL_MASK,
1228 env->segs[R_CS].selector, EIP,
1229 (int)env->segs[R_CS].base + EIP,
1230 env->segs[R_SS].selector, ESP);
1231 if (intno == 0x0e) {
1232 qemu_log(" CR2=" TARGET_FMT_lx, env->cr[2]);
1233 } else {
1234 qemu_log(" EAX=" TARGET_FMT_lx, EAX);
1235 }
1236 qemu_log("\n");
1237 log_cpu_state(env, X86_DUMP_CCOP);
1238 #if 0
1239 {
1240 int i;
1241 uint8_t *ptr;
1242 qemu_log(" code=");
1243 ptr = env->segs[R_CS].base + env->eip;
1244 for(i = 0; i < 16; i++) {
1245 qemu_log(" %02x", ldub(ptr + i));
1246 }
1247 qemu_log("\n");
1248 }
1249 #endif
1250 count++;
1251 }
1252 }
1253 if (env->cr[0] & CR0_PE_MASK) {
1254 #if !defined(CONFIG_USER_ONLY)
1255 if (env->hflags & HF_SVMI_MASK)
1256 handle_even_inj(intno, is_int, error_code, is_hw, 0);
1257 #endif
1258 #ifdef TARGET_X86_64
1259 if (env->hflags & HF_LMA_MASK) {
1260 do_interrupt64(intno, is_int, error_code, next_eip, is_hw);
1261 } else
1262 #endif
1263 {
1264 do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw);
1265 }
1266 } else {
1267 #if !defined(CONFIG_USER_ONLY)
1268 if (env->hflags & HF_SVMI_MASK)
1269 handle_even_inj(intno, is_int, error_code, is_hw, 1);
1270 #endif
1271 do_interrupt_real(intno, is_int, error_code, next_eip);
1272 }
1273
1274 #if !defined(CONFIG_USER_ONLY)
1275 if (env->hflags & HF_SVMI_MASK) {
1276 uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
1277 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj & ~SVM_EVTINJ_VALID);
1278 }
1279 #endif
1280 }
1281
1282 /* This should come from sysemu.h - if we could include it here... */
1283 void qemu_system_reset_request(void);
1284
1285 /*
1286 * Check nested exceptions and change to double or triple fault if
1287 * needed. It should only be called, if this is not an interrupt.
1288 * Returns the new exception number.
1289 */
1290 static int check_exception(int intno, int *error_code)
1291 {
1292 int first_contributory = env->old_exception == 0 ||
1293 (env->old_exception >= 10 &&
1294 env->old_exception <= 13);
1295 int second_contributory = intno == 0 ||
1296 (intno >= 10 && intno <= 13);
1297
1298 qemu_log_mask(CPU_LOG_INT, "check_exception old: 0x%x new 0x%x\n",
1299 env->old_exception, intno);
1300
1301 #if !defined(CONFIG_USER_ONLY)
1302 if (env->old_exception == EXCP08_DBLE) {
1303 if (env->hflags & HF_SVMI_MASK)
1304 helper_vmexit(SVM_EXIT_SHUTDOWN, 0); /* does not return */
1305
1306 qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1307
1308 qemu_system_reset_request();
1309 return EXCP_HLT;
1310 }
1311 #endif
1312
1313 if ((first_contributory && second_contributory)
1314 || (env->old_exception == EXCP0E_PAGE &&
1315 (second_contributory || (intno == EXCP0E_PAGE)))) {
1316 intno = EXCP08_DBLE;
1317 *error_code = 0;
1318 }
1319
1320 if (second_contributory || (intno == EXCP0E_PAGE) ||
1321 (intno == EXCP08_DBLE))
1322 env->old_exception = intno;
1323
1324 return intno;
1325 }
1326
1327 /*
1328 * Signal an interruption. It is executed in the main CPU loop.
1329 * is_int is TRUE if coming from the int instruction. next_eip is the
1330 * EIP value AFTER the interrupt instruction. It is only relevant if
1331 * is_int is TRUE.
1332 */
1333 static void QEMU_NORETURN raise_interrupt(int intno, int is_int, int error_code,
1334 int next_eip_addend)
1335 {
1336 if (!is_int) {
1337 helper_svm_check_intercept_param(SVM_EXIT_EXCP_BASE + intno, error_code);
1338 intno = check_exception(intno, &error_code);
1339 } else {
1340 helper_svm_check_intercept_param(SVM_EXIT_SWINT, 0);
1341 }
1342
1343 env->exception_index = intno;
1344 env->error_code = error_code;
1345 env->exception_is_int = is_int;
1346 env->exception_next_eip = env->eip + next_eip_addend;
1347 cpu_loop_exit();
1348 }
1349
1350 /* shortcuts to generate exceptions */
1351
1352 void raise_exception_err(int exception_index, int error_code)
1353 {
1354 raise_interrupt(exception_index, 0, error_code, 0);
1355 }
1356
1357 void raise_exception(int exception_index)
1358 {
1359 raise_interrupt(exception_index, 0, 0, 0);
1360 }
1361
1362 /* SMM support */
1363
1364 #if defined(CONFIG_USER_ONLY)
1365
1366 void do_smm_enter(void)
1367 {
1368 }
1369
1370 void helper_rsm(void)
1371 {
1372 }
1373
1374 #else
1375
1376 #ifdef TARGET_X86_64
1377 #define SMM_REVISION_ID 0x00020064
1378 #else
1379 #define SMM_REVISION_ID 0x00020000
1380 #endif
1381
1382 void do_smm_enter(void)
1383 {
1384 target_ulong sm_state;
1385 SegmentCache *dt;
1386 int i, offset;
1387
1388 qemu_log_mask(CPU_LOG_INT, "SMM: enter\n");
1389 log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
1390
1391 env->hflags |= HF_SMM_MASK;
1392 cpu_smm_update(env);
1393
1394 sm_state = env->smbase + 0x8000;
1395
1396 #ifdef TARGET_X86_64
1397 for(i = 0; i < 6; i++) {
1398 dt = &env->segs[i];
1399 offset = 0x7e00 + i * 16;
1400 stw_phys(sm_state + offset, dt->selector);
1401 stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
1402 stl_phys(sm_state + offset + 4, dt->limit);
1403 stq_phys(sm_state + offset + 8, dt->base);
1404 }
1405
1406 stq_phys(sm_state + 0x7e68, env->gdt.base);
1407 stl_phys(sm_state + 0x7e64, env->gdt.limit);
1408
1409 stw_phys(sm_state + 0x7e70, env->ldt.selector);
1410 stq_phys(sm_state + 0x7e78, env->ldt.base);
1411 stl_phys(sm_state + 0x7e74, env->ldt.limit);
1412 stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
1413
1414 stq_phys(sm_state + 0x7e88, env->idt.base);
1415 stl_phys(sm_state + 0x7e84, env->idt.limit);
1416
1417 stw_phys(sm_state + 0x7e90, env->tr.selector);
1418 stq_phys(sm_state + 0x7e98, env->tr.base);
1419 stl_phys(sm_state + 0x7e94, env->tr.limit);
1420 stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
1421
1422 stq_phys(sm_state + 0x7ed0, env->efer);
1423
1424 stq_phys(sm_state + 0x7ff8, EAX);
1425 stq_phys(sm_state + 0x7ff0, ECX);
1426 stq_phys(sm_state + 0x7fe8, EDX);
1427 stq_phys(sm_state + 0x7fe0, EBX);
1428 stq_phys(sm_state + 0x7fd8, ESP);
1429 stq_phys(sm_state + 0x7fd0, EBP);
1430 stq_phys(sm_state + 0x7fc8, ESI);
1431 stq_phys(sm_state + 0x7fc0, EDI);
1432 for(i = 8; i < 16; i++)
1433 stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]);
1434 stq_phys(sm_state + 0x7f78, env->eip);
1435 stl_phys(sm_state + 0x7f70, compute_eflags());
1436 stl_phys(sm_state + 0x7f68, env->dr[6]);
1437 stl_phys(sm_state + 0x7f60, env->dr[7]);
1438
1439 stl_phys(sm_state + 0x7f48, env->cr[4]);
1440 stl_phys(sm_state + 0x7f50, env->cr[3]);
1441 stl_phys(sm_state + 0x7f58, env->cr[0]);
1442
1443 stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
1444 stl_phys(sm_state + 0x7f00, env->smbase);
1445 #else
1446 stl_phys(sm_state + 0x7ffc, env->cr[0]);
1447 stl_phys(sm_state + 0x7ff8, env->cr[3]);
1448 stl_phys(sm_state + 0x7ff4, compute_eflags());
1449 stl_phys(sm_state + 0x7ff0, env->eip);
1450 stl_phys(sm_state + 0x7fec, EDI);
1451 stl_phys(sm_state + 0x7fe8, ESI);
1452 stl_phys(sm_state + 0x7fe4, EBP);
1453 stl_phys(sm_state + 0x7fe0, ESP);
1454 stl_phys(sm_state + 0x7fdc, EBX);
1455 stl_phys(sm_state + 0x7fd8, EDX);
1456 stl_phys(sm_state + 0x7fd4, ECX);
1457 stl_phys(sm_state + 0x7fd0, EAX);
1458 stl_phys(sm_state + 0x7fcc, env->dr[6]);
1459 stl_phys(sm_state + 0x7fc8, env->dr[7]);
1460
1461 stl_phys(sm_state + 0x7fc4, env->tr.selector);
1462 stl_phys(sm_state + 0x7f64, env->tr.base);
1463 stl_phys(sm_state + 0x7f60, env->tr.limit);
1464 stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff);
1465
1466 stl_phys(sm_state + 0x7fc0, env->ldt.selector);
1467 stl_phys(sm_state + 0x7f80, env->ldt.base);
1468 stl_phys(sm_state + 0x7f7c, env->ldt.limit);
1469 stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff);
1470
1471 stl_phys(sm_state + 0x7f74, env->gdt.base);
1472 stl_phys(sm_state + 0x7f70, env->gdt.limit);
1473
1474 stl_phys(sm_state + 0x7f58, env->idt.base);
1475 stl_phys(sm_state + 0x7f54, env->idt.limit);
1476
1477 for(i = 0; i < 6; i++) {
1478 dt = &env->segs[i];
1479 if (i < 3)
1480 offset = 0x7f84 + i * 12;
1481 else
1482 offset = 0x7f2c + (i - 3) * 12;
1483 stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector);
1484 stl_phys(sm_state + offset + 8, dt->base);
1485 stl_phys(sm_state + offset + 4, dt->limit);
1486 stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff);
1487 }
1488 stl_phys(sm_state + 0x7f14, env->cr[4]);
1489
1490 stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
1491 stl_phys(sm_state + 0x7ef8, env->smbase);
1492 #endif
1493 /* init SMM cpu state */
1494
1495 #ifdef TARGET_X86_64
1496 cpu_load_efer(env, 0);
1497 #endif
1498 load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
1499 env->eip = 0x00008000;
1500 cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase,
1501 0xffffffff, 0);
1502 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0);
1503 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0);
1504 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0);
1505 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0);
1506 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0);
1507
1508 cpu_x86_update_cr0(env,
1509 env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
1510 cpu_x86_update_cr4(env, 0);
1511 env->dr[7] = 0x00000400;
1512 CC_OP = CC_OP_EFLAGS;
1513 }
1514
1515 void helper_rsm(void)
1516 {
1517 target_ulong sm_state;
1518 int i, offset;
1519 uint32_t val;
1520
1521 sm_state = env->smbase + 0x8000;
1522 #ifdef TARGET_X86_64
1523 cpu_load_efer(env, ldq_phys(sm_state + 0x7ed0));
1524
1525 for(i = 0; i < 6; i++) {
1526 offset = 0x7e00 + i * 16;
1527 cpu_x86_load_seg_cache(env, i,
1528 lduw_phys(sm_state + offset),
1529 ldq_phys(sm_state + offset + 8),
1530 ldl_phys(sm_state + offset + 4),
1531 (lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8);
1532 }
1533
1534 env->gdt.base = ldq_phys(sm_state + 0x7e68);
1535 env->gdt.limit = ldl_phys(sm_state + 0x7e64);
1536
1537 env->ldt.selector = lduw_phys(sm_state + 0x7e70);
1538 env->ldt.base = ldq_phys(sm_state + 0x7e78);
1539 env->ldt.limit = ldl_phys(sm_state + 0x7e74);
1540 env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8;
1541
1542 env->idt.base = ldq_phys(sm_state + 0x7e88);
1543 env->idt.limit = ldl_phys(sm_state + 0x7e84);
1544
1545 env->tr.selector = lduw_phys(sm_state + 0x7e90);
1546 env->tr.base = ldq_phys(sm_state + 0x7e98);
1547 env->tr.limit = ldl_phys(sm_state + 0x7e94);
1548 env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8;
1549
1550 EAX = ldq_phys(sm_state + 0x7ff8);
1551 ECX = ldq_phys(sm_state + 0x7ff0);
1552 EDX = ldq_phys(sm_state + 0x7fe8);
1553 EBX = ldq_phys(sm_state + 0x7fe0);
1554 ESP = ldq_phys(sm_state + 0x7fd8);
1555 EBP = ldq_phys(sm_state + 0x7fd0);
1556 ESI = ldq_phys(sm_state + 0x7fc8);
1557 EDI = ldq_phys(sm_state + 0x7fc0);
1558 for(i = 8; i < 16; i++)
1559 env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8);
1560 env->eip = ldq_phys(sm_state + 0x7f78);
1561 load_eflags(ldl_phys(sm_state + 0x7f70),
1562 ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
1563 env->dr[6] = ldl_phys(sm_state + 0x7f68);
1564 env->dr[7] = ldl_phys(sm_state + 0x7f60);
1565
1566 cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
1567 cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
1568 cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
1569
1570 val = ldl_phys(sm_state + 0x7efc); /* revision ID */
1571 if (val & 0x20000) {
1572 env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff;
1573 }
1574 #else
1575 cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
1576 cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
1577 load_eflags(ldl_phys(sm_state + 0x7ff4),
1578 ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
1579 env->eip = ldl_phys(sm_state + 0x7ff0);
1580 EDI = ldl_phys(sm_state + 0x7fec);
1581 ESI = ldl_phys(sm_state + 0x7fe8);
1582 EBP = ldl_phys(sm_state + 0x7fe4);
1583 ESP = ldl_phys(sm_state + 0x7fe0);
1584 EBX = ldl_phys(sm_state + 0x7fdc);
1585 EDX = ldl_phys(sm_state + 0x7fd8);
1586 ECX = ldl_phys(sm_state + 0x7fd4);
1587 EAX = ldl_phys(sm_state + 0x7fd0);
1588 env->dr[6] = ldl_phys(sm_state + 0x7fcc);
1589 env->dr[7] = ldl_phys(sm_state + 0x7fc8);
1590
1591 env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff;
1592 env->tr.base = ldl_phys(sm_state + 0x7f64);
1593 env->tr.limit = ldl_phys(sm_state + 0x7f60);
1594 env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8;
1595
1596 env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff;
1597 env->ldt.base = ldl_phys(sm_state + 0x7f80);
1598 env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
1599 env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8;
1600
1601 env->gdt.base = ldl_phys(sm_state + 0x7f74);
1602 env->gdt.limit = ldl_phys(sm_state + 0x7f70);
1603
1604 env->idt.base = ldl_phys(sm_state + 0x7f58);
1605 env->idt.limit = ldl_phys(sm_state + 0x7f54);
1606
1607 for(i = 0; i < 6; i++) {
1608 if (i < 3)
1609 offset = 0x7f84 + i * 12;
1610 else
1611 offset = 0x7f2c + (i - 3) * 12;
1612 cpu_x86_load_seg_cache(env, i,
1613 ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff,
1614 ldl_phys(sm_state + offset + 8),
1615 ldl_phys(sm_state + offset + 4),
1616 (ldl_phys(sm_state + offset) & 0xf0ff) << 8);
1617 }
1618 cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
1619
1620 val = ldl_phys(sm_state + 0x7efc); /* revision ID */
1621 if (val & 0x20000) {
1622 env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff;
1623 }
1624 #endif
1625 CC_OP = CC_OP_EFLAGS;
1626 env->hflags &= ~HF_SMM_MASK;
1627 cpu_smm_update(env);
1628
1629 qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
1630 log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
1631 }
1632
1633 #endif /* !CONFIG_USER_ONLY */
1634
1635
1636 /* division, flags are undefined */
1637
1638 void helper_divb_AL(target_ulong t0)
1639 {
1640 unsigned int num, den, q, r;
1641
1642 num = (EAX & 0xffff);
1643 den = (t0 & 0xff);
1644 if (den == 0) {
1645 raise_exception(EXCP00_DIVZ);
1646 }
1647 q = (num / den);
1648 if (q > 0xff)
1649 raise_exception(EXCP00_DIVZ);
1650 q &= 0xff;
1651 r = (num % den) & 0xff;
1652 EAX = (EAX & ~0xffff) | (r << 8) | q;
1653 }
1654
1655 void helper_idivb_AL(target_ulong t0)
1656 {
1657 int num, den, q, r;
1658
1659 num = (int16_t)EAX;
1660 den = (int8_t)t0;
1661 if (den == 0) {
1662 raise_exception(EXCP00_DIVZ);
1663 }
1664 q = (num / den);
1665 if (q != (int8_t)q)
1666 raise_exception(EXCP00_DIVZ);
1667 q &= 0xff;
1668 r = (num % den) & 0xff;
1669 EAX = (EAX & ~0xffff) | (r << 8) | q;
1670 }
1671
1672 void helper_divw_AX(target_ulong t0)
1673 {
1674 unsigned int num, den, q, r;
1675
1676 num = (EAX & 0xffff) | ((EDX & 0xffff) << 16);
1677 den = (t0 & 0xffff);
1678 if (den == 0) {
1679 raise_exception(EXCP00_DIVZ);
1680 }
1681 q = (num / den);
1682 if (q > 0xffff)
1683 raise_exception(EXCP00_DIVZ);
1684 q &= 0xffff;
1685 r = (num % den) & 0xffff;
1686 EAX = (EAX & ~0xffff) | q;
1687 EDX = (EDX & ~0xffff) | r;
1688 }
1689
1690 void helper_idivw_AX(target_ulong t0)
1691 {
1692 int num, den, q, r;
1693
1694 num = (EAX & 0xffff) | ((EDX & 0xffff) << 16);
1695 den = (int16_t)t0;
1696 if (den == 0) {
1697 raise_exception(EXCP00_DIVZ);
1698 }
1699 q = (num / den);
1700 if (q != (int16_t)q)
1701 raise_exception(EXCP00_DIVZ);
1702 q &= 0xffff;
1703 r = (num % den) & 0xffff;
1704 EAX = (EAX & ~0xffff) | q;
1705 EDX = (EDX & ~0xffff) | r;
1706 }
1707
1708 void helper_divl_EAX(target_ulong t0)
1709 {
1710 unsigned int den, r;
1711 uint64_t num, q;
1712
1713 num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
1714 den = t0;
1715 if (den == 0) {
1716 raise_exception(EXCP00_DIVZ);
1717 }
1718 q = (num / den);
1719 r = (num % den);
1720 if (q > 0xffffffff)
1721 raise_exception(EXCP00_DIVZ);
1722 EAX = (uint32_t)q;
1723 EDX = (uint32_t)r;
1724 }
1725
1726 void helper_idivl_EAX(target_ulong t0)
1727 {
1728 int den, r;
1729 int64_t num, q;
1730
1731 num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
1732 den = t0;
1733 if (den == 0) {
1734 raise_exception(EXCP00_DIVZ);
1735 }
1736 q = (num / den);
1737 r = (num % den);
1738 if (q != (int32_t)q)
1739 raise_exception(EXCP00_DIVZ);
1740 EAX = (uint32_t)q;
1741 EDX = (uint32_t)r;
1742 }
1743
1744 /* bcd */
1745
1746 /* XXX: exception */
1747 void helper_aam(int base)
1748 {
1749 int al, ah;
1750 al = EAX & 0xff;
1751 ah = al / base;
1752 al = al % base;
1753 EAX = (EAX & ~0xffff) | al | (ah << 8);
1754 CC_DST = al;
1755 }
1756
1757 void helper_aad(int base)
1758 {
1759 int al, ah;
1760 al = EAX & 0xff;
1761 ah = (EAX >> 8) & 0xff;
1762 al = ((ah * base) + al) & 0xff;
1763 EAX = (EAX & ~0xffff) | al;
1764 CC_DST = al;
1765 }
1766
1767 void helper_aaa(void)
1768 {
1769 int icarry;
1770 int al, ah, af;
1771 int eflags;
1772
1773 eflags = helper_cc_compute_all(CC_OP);
1774 af = eflags & CC_A;
1775 al = EAX & 0xff;
1776 ah = (EAX >> 8) & 0xff;
1777
1778 icarry = (al > 0xf9);
1779 if (((al & 0x0f) > 9 ) || af) {
1780 al = (al + 6) & 0x0f;
1781 ah = (ah + 1 + icarry) & 0xff;
1782 eflags |= CC_C | CC_A;
1783 } else {
1784 eflags &= ~(CC_C | CC_A);
1785 al &= 0x0f;
1786 }
1787 EAX = (EAX & ~0xffff) | al | (ah << 8);
1788 CC_SRC = eflags;
1789 }
1790
1791 void helper_aas(void)
1792 {
1793 int icarry;
1794 int al, ah, af;
1795 int eflags;
1796
1797 eflags = helper_cc_compute_all(CC_OP);
1798 af = eflags & CC_A;
1799 al = EAX & 0xff;
1800 ah = (EAX >> 8) & 0xff;
1801
1802 icarry = (al < 6);
1803 if (((al & 0x0f) > 9 ) || af) {
1804 al = (al - 6) & 0x0f;
1805 ah = (ah - 1 - icarry) & 0xff;
1806 eflags |= CC_C | CC_A;
1807 } else {
1808 eflags &= ~(CC_C | CC_A);
1809 al &= 0x0f;
1810 }
1811 EAX = (EAX & ~0xffff) | al | (ah << 8);
1812 CC_SRC = eflags;
1813 }
1814
1815 void helper_daa(void)
1816 {
1817 int al, af, cf;
1818 int eflags;
1819
1820 eflags = helper_cc_compute_all(CC_OP);
1821 cf = eflags & CC_C;
1822 af = eflags & CC_A;
1823 al = EAX & 0xff;
1824
1825 eflags = 0;
1826 if (((al & 0x0f) > 9 ) || af) {
1827 al = (al + 6) & 0xff;
1828 eflags |= CC_A;
1829 }
1830 if ((al > 0x9f) || cf) {
1831 al = (al + 0x60) & 0xff;
1832 eflags |= CC_C;
1833 }
1834 EAX = (EAX & ~0xff) | al;
1835 /* well, speed is not an issue here, so we compute the flags by hand */
1836 eflags |= (al == 0) << 6; /* zf */
1837 eflags |= parity_table[al]; /* pf */
1838 eflags |= (al & 0x80); /* sf */
1839 CC_SRC = eflags;
1840 }
1841
1842 void helper_das(void)
1843 {
1844 int al, al1, af, cf;
1845 int eflags;
1846
1847 eflags = helper_cc_compute_all(CC_OP);
1848 cf = eflags & CC_C;
1849 af = eflags & CC_A;
1850 al = EAX & 0xff;
1851
1852 eflags = 0;
1853 al1 = al;
1854 if (((al & 0x0f) > 9 ) || af) {
1855 eflags |= CC_A;
1856 if (al < 6 || cf)
1857 eflags |= CC_C;
1858 al = (al - 6) & 0xff;
1859 }
1860 if ((al1 > 0x99) || cf) {
1861 al = (al - 0x60) & 0xff;
1862 eflags |= CC_C;
1863 }
1864 EAX = (EAX & ~0xff) | al;
1865 /* well, speed is not an issue here, so we compute the flags by hand */
1866 eflags |= (al == 0) << 6; /* zf */
1867 eflags |= parity_table[al]; /* pf */
1868 eflags |= (al & 0x80); /* sf */
1869 CC_SRC = eflags;
1870 }
1871
1872 void helper_into(int next_eip_addend)
1873 {
1874 int eflags;
1875 eflags = helper_cc_compute_all(CC_OP);
1876 if (eflags & CC_O) {
1877 raise_interrupt(EXCP04_INTO, 1, 0, next_eip_addend);
1878 }
1879 }
1880
1881 void helper_cmpxchg8b(target_ulong a0)
1882 {
1883 uint64_t d;
1884 int eflags;
1885
1886 eflags = helper_cc_compute_all(CC_OP);
1887 d = ldq(a0);
1888 if (d == (((uint64_t)EDX << 32) | (uint32_t)EAX)) {
1889 stq(a0, ((uint64_t)ECX << 32) | (uint32_t)EBX);
1890 eflags |= CC_Z;
1891 } else {
1892 /* always do the store */
1893 stq(a0, d);
1894 EDX = (uint32_t)(d >> 32);
1895 EAX = (uint32_t)d;
1896 eflags &= ~CC_Z;
1897 }
1898 CC_SRC = eflags;
1899 }
1900
1901 #ifdef TARGET_X86_64
1902 void helper_cmpxchg16b(target_ulong a0)
1903 {
1904 uint64_t d0, d1;
1905 int eflags;
1906
1907 if ((a0 & 0xf) != 0)
1908 raise_exception(EXCP0D_GPF);
1909 eflags = helper_cc_compute_all(CC_OP);
1910 d0 = ldq(a0);
1911 d1 = ldq(a0 + 8);
1912 if (d0 == EAX && d1 == EDX) {
1913 stq(a0, EBX);
1914 stq(a0 + 8, ECX);
1915 eflags |= CC_Z;
1916 } else {
1917 /* always do the store */
1918 stq(a0, d0);
1919 stq(a0 + 8, d1);
1920 EDX = d1;
1921 EAX = d0;
1922 eflags &= ~CC_Z;
1923 }
1924 CC_SRC = eflags;
1925 }
1926 #endif
1927
1928 void helper_single_step(void)
1929 {
1930 #ifndef CONFIG_USER_ONLY
1931 check_hw_breakpoints(env, 1);
1932 env->dr[6] |= DR6_BS;
1933 #endif
1934 raise_exception(EXCP01_DB);
1935 }
1936
1937 void helper_cpuid(void)
1938 {
1939 uint32_t eax, ebx, ecx, edx;
1940
1941 helper_svm_check_intercept_param(SVM_EXIT_CPUID, 0);
1942
1943 cpu_x86_cpuid(env, (uint32_t)EAX, (uint32_t)ECX, &eax, &ebx, &ecx, &edx);
1944 EAX = eax;
1945 EBX = ebx;
1946 ECX = ecx;
1947 EDX = edx;
1948 }
1949
1950 void helper_enter_level(int level, int data32, target_ulong t1)
1951 {
1952 target_ulong ssp;
1953 uint32_t esp_mask, esp, ebp;
1954
1955 esp_mask = get_sp_mask(env->segs[R_SS].flags);
1956 ssp = env->segs[R_SS].base;
1957 ebp = EBP;
1958 esp = ESP;
1959 if (data32) {
1960 /* 32 bit */
1961 esp -= 4;
1962 while (--level) {
1963 esp -= 4;
1964 ebp -= 4;
1965 stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask)));
1966 }
1967 esp -= 4;
1968 stl(ssp + (esp & esp_mask), t1);
1969 } else {
1970 /* 16 bit */
1971 esp -= 2;
1972 while (--level) {
1973 esp -= 2;
1974 ebp -= 2;
1975 stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask)));
1976 }
1977 esp -= 2;
1978 stw(ssp + (esp & esp_mask), t1);
1979 }
1980 }
1981
1982 #ifdef TARGET_X86_64
1983 void helper_enter64_level(int level, int data64, target_ulong t1)
1984 {
1985 target_ulong esp, ebp;
1986 ebp = EBP;
1987 esp = ESP;
1988
1989 if (data64) {
1990 /* 64 bit */
1991 esp -= 8;
1992 while (--level) {
1993 esp -= 8;
1994 ebp -= 8;
1995 stq(esp, ldq(ebp));
1996 }
1997 esp -= 8;
1998 stq(esp, t1);
1999 } else {
2000 /* 16 bit */
2001 esp -= 2;
2002 while (--level) {
2003 esp -= 2;
2004 ebp -= 2;
2005 stw(esp, lduw(ebp));
2006 }
2007 esp -= 2;
2008 stw(esp, t1);
2009 }
2010 }
2011 #endif
2012
2013 void helper_lldt(int selector)
2014 {
2015 SegmentCache *dt;
2016 uint32_t e1, e2;
2017 int index, entry_limit;
2018 target_ulong ptr;
2019
2020 selector &= 0xffff;
2021 if ((selector & 0xfffc) == 0) {
2022 /* XXX: NULL selector case: invalid LDT */
2023 env->ldt.base = 0;
2024 env->ldt.limit = 0;
2025 } else {
2026 if (selector & 0x4)
2027 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2028 dt = &env->gdt;
2029 index = selector & ~7;
2030 #ifdef TARGET_X86_64
2031 if (env->hflags & HF_LMA_MASK)
2032 entry_limit = 15;
2033 else
2034 #endif
2035 entry_limit = 7;
2036 if ((index + entry_limit) > dt->limit)
2037 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2038 ptr = dt->base + index;
2039 e1 = ldl_kernel(ptr);
2040 e2 = ldl_kernel(ptr + 4);
2041 if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2)
2042 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2043 if (!(e2 & DESC_P_MASK))
2044 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2045 #ifdef TARGET_X86_64
2046 if (env->hflags & HF_LMA_MASK) {
2047 uint32_t e3;
2048 e3 = ldl_kernel(ptr + 8);
2049 load_seg_cache_raw_dt(&env->ldt, e1, e2);
2050 env->ldt.base |= (target_ulong)e3 << 32;
2051 } else
2052 #endif
2053 {
2054 load_seg_cache_raw_dt(&env->ldt, e1, e2);
2055 }
2056 }
2057 env->ldt.selector = selector;
2058 }
2059
2060 void helper_ltr(int selector)
2061 {
2062 SegmentCache *dt;
2063 uint32_t e1, e2;
2064 int index, type, entry_limit;
2065 target_ulong ptr;
2066
2067 selector &= 0xffff;
2068 if ((selector & 0xfffc) == 0) {
2069 /* NULL selector case: invalid TR */
2070 env->tr.base = 0;
2071 env->tr.limit = 0;
2072 env->tr.flags = 0;
2073 } else {
2074 if (selector & 0x4)
2075 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2076 dt = &env->gdt;
2077 index = selector & ~7;
2078 #ifdef TARGET_X86_64
2079 if (env->hflags & HF_LMA_MASK)
2080 entry_limit = 15;
2081 else
2082 #endif
2083 entry_limit = 7;
2084 if ((index + entry_limit) > dt->limit)
2085 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2086 ptr = dt->base + index;
2087 e1 = ldl_kernel(ptr);
2088 e2 = ldl_kernel(ptr + 4);
2089 type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
2090 if ((e2 & DESC_S_MASK) ||
2091 (type != 1 && type != 9))
2092 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2093 if (!(e2 & DESC_P_MASK))
2094 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2095 #ifdef TARGET_X86_64
2096 if (env->hflags & HF_LMA_MASK) {
2097 uint32_t e3, e4;
2098 e3 = ldl_kernel(ptr + 8);
2099 e4 = ldl_kernel(ptr + 12);
2100 if ((e4 >> DESC_TYPE_SHIFT) & 0xf)
2101 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2102 load_seg_cache_raw_dt(&env->tr, e1, e2);
2103 env->tr.base |= (target_ulong)e3 << 32;
2104 } else
2105 #endif
2106 {
2107 load_seg_cache_raw_dt(&env->tr, e1, e2);
2108 }
2109 e2 |= DESC_TSS_BUSY_MASK;
2110 stl_kernel(ptr + 4, e2);
2111 }
2112 env->tr.selector = selector;
2113 }
2114
2115 /* only works if protected mode and not VM86. seg_reg must be != R_CS */
2116 void helper_load_seg(int seg_reg, int selector)
2117 {
2118 uint32_t e1, e2;
2119 int cpl, dpl, rpl;
2120 SegmentCache *dt;
2121 int index;
2122 target_ulong ptr;
2123
2124 selector &= 0xffff;
2125 cpl = env->hflags & HF_CPL_MASK;
2126 if ((selector & 0xfffc) == 0) {
2127 /* null selector case */
2128 if (seg_reg == R_SS
2129 #ifdef TARGET_X86_64
2130 && (!(env->hflags & HF_CS64_MASK) || cpl == 3)
2131 #endif
2132 )
2133 raise_exception_err(EXCP0D_GPF, 0);
2134 cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0);
2135 } else {
2136
2137 if (selector & 0x4)
2138 dt = &env->ldt;
2139 else
2140 dt = &env->gdt;
2141 index = selector & ~7;
2142 if ((index + 7) > dt->limit)
2143 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2144 ptr = dt->base + index;
2145 e1 = ldl_kernel(ptr);
2146 e2 = ldl_kernel(ptr + 4);
2147
2148 if (!(e2 & DESC_S_MASK))
2149 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2150 rpl = selector & 3;
2151 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2152 if (seg_reg == R_SS) {
2153 /* must be writable segment */
2154 if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
2155 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2156 if (rpl != cpl || dpl != cpl)
2157 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2158 } else {
2159 /* must be readable segment */
2160 if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
2161 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2162
2163 if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
2164 /* if not conforming code, test rights */
2165 if (dpl < cpl || dpl < rpl)
2166 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2167 }
2168 }
2169
2170 if (!(e2 & DESC_P_MASK)) {
2171 if (seg_reg == R_SS)
2172 raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
2173 else
2174 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2175 }
2176
2177 /* set the access bit if not already set */
2178 if (!(e2 & DESC_A_MASK)) {
2179 e2 |= DESC_A_MASK;
2180 stl_kernel(ptr + 4, e2);
2181 }
2182
2183 cpu_x86_load_seg_cache(env, seg_reg, selector,
2184 get_seg_base(e1, e2),
2185 get_seg_limit(e1, e2),
2186 e2);
2187 #if 0
2188 qemu_log("load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
2189 selector, (unsigned long)sc->base, sc->limit, sc->flags);
2190 #endif
2191 }
2192 }
2193
2194 /* protected mode jump */
2195 void helper_ljmp_protected(int new_cs, target_ulong new_eip,
2196 int next_eip_addend)
2197 {
2198 int gate_cs, type;
2199 uint32_t e1, e2, cpl, dpl, rpl, limit;
2200 target_ulong next_eip;
2201
2202 if ((new_cs & 0xfffc) == 0)
2203 raise_exception_err(EXCP0D_GPF, 0);
2204 if (load_segment(&e1, &e2, new_cs) != 0)
2205 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2206 cpl = env->hflags & HF_CPL_MASK;
2207 if (e2 & DESC_S_MASK) {
2208 if (!(e2 & DESC_CS_MASK))
2209 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2210 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2211 if (e2 & DESC_C_MASK) {
2212 /* conforming code segment */
2213 if (dpl > cpl)
2214 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2215 } else {
2216 /* non conforming code segment */
2217 rpl = new_cs & 3;
2218 if (rpl > cpl)
2219 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2220 if (dpl != cpl)
2221 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2222 }
2223 if (!(e2 & DESC_P_MASK))
2224 raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2225 limit = get_seg_limit(e1, e2);
2226 if (new_eip > limit &&
2227 !(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK))
2228 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2229 cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
2230 get_seg_base(e1, e2), limit, e2);
2231 EIP = new_eip;
2232 } else {
2233 /* jump to call or task gate */
2234 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2235 rpl = new_cs & 3;
2236 cpl = env->hflags & HF_CPL_MASK;
2237 type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
2238 switch(type) {
2239 case 1: /* 286 TSS */
2240 case 9: /* 386 TSS */
2241 case 5: /* task gate */
2242 if (dpl < cpl || dpl < rpl)
2243 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2244 next_eip = env->eip + next_eip_addend;
2245 switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip);
2246 CC_OP = CC_OP_EFLAGS;
2247 break;
2248 case 4: /* 286 call gate */
2249 case 12: /* 386 call gate */
2250 if ((dpl < cpl) || (dpl < rpl))
2251 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2252 if (!(e2 & DESC_P_MASK))
2253 raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2254 gate_cs = e1 >> 16;
2255 new_eip = (e1 & 0xffff);
2256 if (type == 12)
2257 new_eip |= (e2 & 0xffff0000);
2258 if (load_segment(&e1, &e2, gate_cs) != 0)
2259 raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2260 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2261 /* must be code segment */
2262 if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
2263 (DESC_S_MASK | DESC_CS_MASK)))
2264 raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2265 if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
2266 (!(e2 & DESC_C_MASK) && (dpl != cpl)))
2267 raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2268 if (!(e2 & DESC_P_MASK))
2269 raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2270 limit = get_seg_limit(e1, e2);
2271 if (new_eip > limit)
2272 raise_exception_err(EXCP0D_GPF, 0);
2273 cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) | cpl,
2274 get_seg_base(e1, e2), limit, e2);
2275 EIP = new_eip;
2276 break;
2277 default:
2278 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2279 break;
2280 }
2281 }
2282 }
2283
2284 /* real mode call */
2285 void helper_lcall_real(int new_cs, target_ulong new_eip1,
2286 int shift, int next_eip)
2287 {
2288 int new_eip;
2289 uint32_t esp, esp_mask;
2290 target_ulong ssp;
2291
2292 new_eip = new_eip1;
2293 esp = ESP;
2294 esp_mask = get_sp_mask(env->segs[R_SS].flags);
2295 ssp = env->segs[R_SS].base;
2296 if (shift) {
2297 PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector);
2298 PUSHL(ssp, esp, esp_mask, next_eip);
2299 } else {
2300 PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector);
2301 PUSHW(ssp, esp, esp_mask, next_eip);
2302 }
2303
2304 SET_ESP(esp, esp_mask);
2305 env->eip = new_eip;
2306 env->segs[R_CS].selector = new_cs;
2307 env->segs[R_CS].base = (new_cs << 4);
2308 }
2309
2310 /* protected mode call */
2311 void helper_lcall_protected(int new_cs, target_ulong new_eip,
2312 int shift, int next_eip_addend)
2313 {
2314 int new_stack, i;
2315 uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count;
2316 uint32_t ss = 0, ss_e1 = 0, ss_e2 = 0, sp, type, ss_dpl, sp_mask;
2317 uint32_t val, limit, old_sp_mask;
2318 target_ulong ssp, old_ssp, next_eip;
2319
2320 next_eip = env->eip + next_eip_addend;
2321 LOG_PCALL("lcall %04x:%08x s=%d\n", new_cs, (uint32_t)new_eip, shift);
2322 LOG_PCALL_STATE(env);
2323 if ((new_cs & 0xfffc) == 0)
2324 raise_exception_err(EXCP0D_GPF, 0);
2325 if (load_segment(&e1, &e2, new_cs) != 0)
2326 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2327 cpl = env->hflags & HF_CPL_MASK;
2328 LOG_PCALL("desc=%08x:%08x\n", e1, e2);
2329 if (e2 & DESC_S_MASK) {
2330 if (!(e2 & DESC_CS_MASK))
2331 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2332 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2333 if (e2 & DESC_C_MASK) {
2334 /* conforming code segment */
2335 if (dpl > cpl)
2336 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2337 } else {
2338 /* non conforming code segment */
2339 rpl = new_cs & 3;
2340 if (rpl > cpl)
2341 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2342 if (dpl != cpl)
2343 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2344 }
2345 if (!(e2 & DESC_P_MASK))
2346 raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2347
2348 #ifdef TARGET_X86_64
2349 /* XXX: check 16/32 bit cases in long mode */
2350 if (shift == 2) {
2351 target_ulong rsp;
2352 /* 64 bit case */
2353 rsp = ESP;
2354 PUSHQ(rsp, env->segs[R_CS].selector);
2355 PUSHQ(rsp, next_eip);
2356 /* from this point, not restartable */
2357 ESP = rsp;
2358 cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
2359 get_seg_base(e1, e2),
2360 get_seg_limit(e1, e2), e2);
2361 EIP = new_eip;
2362 } else
2363 #endif
2364 {
2365 sp = ESP;
2366 sp_mask = get_sp_mask(env->segs[R_SS].flags);
2367 ssp = env->segs[R_SS].base;
2368 if (shift) {
2369 PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector);
2370 PUSHL(ssp, sp, sp_mask, next_eip);
2371 } else {
2372 PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
2373 PUSHW(ssp, sp, sp_mask, next_eip);
2374 }
2375
2376 limit = get_seg_limit(e1, e2);
2377 if (new_eip > limit)
2378 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2379 /* from this point, not restartable */
2380 SET_ESP(sp, sp_mask);
2381 cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
2382 get_seg_base(e1, e2), limit, e2);
2383 EIP = new_eip;
2384 }
2385 } else {
2386 /* check gate type */
2387 type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
2388 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2389 rpl = new_cs & 3;
2390 switch(type) {
2391 case 1: /* available 286 TSS */
2392 case 9: /* available 386 TSS */
2393 case 5: /* task gate */
2394 if (dpl < cpl || dpl < rpl)
2395 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2396 switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip);
2397 CC_OP = CC_OP_EFLAGS;
2398 return;
2399 case 4: /* 286 call gate */
2400 case 12: /* 386 call gate */
2401 break;
2402 default:
2403 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2404 break;
2405 }
2406 shift = type >> 3;
2407
2408 if (dpl < cpl || dpl < rpl)
2409 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2410 /* check valid bit */
2411 if (!(e2 & DESC_P_MASK))
2412 raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2413 selector = e1 >> 16;
2414 offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff);
2415 param_count = e2 & 0x1f;
2416 if ((selector & 0xfffc) == 0)
2417 raise_exception_err(EXCP0D_GPF, 0);
2418
2419 if (load_segment(&e1, &e2, selector) != 0)
2420 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2421 if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
2422 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2423 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2424 if (dpl > cpl)
2425 raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2426 if (!(e2 & DESC_P_MASK))
2427 raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2428
2429 if (!(e2 & DESC_C_MASK) && dpl < cpl) {
2430 /* to inner privilege */
2431 get_ss_esp_from_tss(&ss, &sp, dpl);
2432 LOG_PCALL("new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n",
2433 ss, sp, param_count, ESP);
2434 if ((ss & 0xfffc) == 0)
2435 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
2436 if ((ss & 3) != dpl)
2437 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
2438 if (load_segment(&ss_e1, &ss_e2, ss) != 0)
2439 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
2440 ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
2441 if (ss_dpl != dpl)
2442 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
2443 if (!(ss_e2 & DESC_S_MASK) ||
2444 (ss_e2 & DESC_CS_MASK) ||
2445 !(ss_e2 & DESC_W_MASK))
2446 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
2447 if (!(ss_e2 & DESC_P_MASK))
2448 raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
2449
2450 // push_size = ((param_count * 2) + 8) << shift;
2451
2452 old_sp_mask = get_sp_mask(env->segs[R_SS].flags);
2453 old_ssp = env->segs[R_SS].base;
2454
2455 sp_mask = get_sp_mask(ss_e2);
2456 ssp = get_seg_base(ss_e1, ss_e2);
2457 if (shift) {
2458 PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector);
2459 PUSHL(ssp, sp, sp_mask, ESP);
2460 for(i = param_count - 1; i >= 0; i--) {
2461 val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
2462 PUSHL(ssp, sp, sp_mask, val);
2463 }
2464 } else {
2465 PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector);
2466 PUSHW(ssp, sp, sp_mask, ESP);
2467 for(i = param_count - 1; i >= 0; i--) {
2468 val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
2469 PUSHW(ssp, sp, sp_mask, val);
2470 }
2471 }
2472 new_stack = 1;
2473 } else {
2474 /* to same privilege */
2475 sp = ESP;
2476 sp_mask = get_sp_mask(env->segs[R_SS].flags);
2477 ssp = env->segs[R_SS].base;
2478 // push_size = (4 << shift);
2479 new_stack = 0;
2480 }
2481
2482 if (shift) {
2483 PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector);
2484 PUSHL(ssp, sp, sp_mask, next_eip);
2485 } else {
2486 PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
2487 PUSHW(ssp, sp, sp_mask, next_eip);
2488 }
2489
2490 /* from this point, not restartable */
2491
2492 if (new_stack) {
2493 ss = (ss & ~3) | dpl;
2494 cpu_x86_load_seg_cache(env, R_SS, ss,
2495 ssp,
2496 get_seg_limit(ss_e1, ss_e2),
2497 ss_e2);
2498 }
2499
2500 selector = (selector & ~3) | dpl;
2501 cpu_x86_load_seg_cache(env, R_CS, selector,
2502 get_seg_base(e1, e2),
2503 get_seg_limit(e1, e2),
2504 e2);
2505 cpu_x86_set_cpl(env, dpl);
2506 SET_ESP(sp, sp_mask);
2507 EIP = offset;
2508 }
2509 #ifdef CONFIG_KQEMU
2510 if (kqemu_is_ok(env)) {
2511 env->exception_index = -1;
2512 cpu_loop_exit();
2513 }
2514 #endif
2515 }
2516
2517 /* real and vm86 mode iret */
2518 void helper_iret_real(int shift)
2519 {
2520 uint32_t sp, new_cs, new_eip, new_eflags, sp_mask;
2521 target_ulong ssp;
2522 int eflags_mask;
2523
2524 sp_mask = 0xffff; /* XXXX: use SS segment size ? */
2525 sp = ESP;
2526 ssp = env->segs[R_SS].base;
2527 if (shift == 1) {
2528 /* 32 bits */
2529 POPL(ssp, sp, sp_mask, new_eip);
2530 POPL(ssp, sp, sp_mask, new_cs);
2531 new_cs &= 0xffff;
2532 POPL(ssp, sp, sp_mask, new_eflags);
2533 } else {
2534 /* 16 bits */
2535 POPW(ssp, sp, sp_mask, new_eip);
2536 POPW(ssp, sp, sp_mask, new_cs);
2537 POPW(ssp, sp, sp_mask, new_eflags);
2538 }
2539 ESP = (ESP & ~sp_mask) | (sp & sp_mask);
2540 env->segs[R_CS].selector = new_cs;
2541 env->segs[R_CS].base = (new_cs << 4);
2542 env->eip = new_eip;
2543 if (env->eflags & VM_MASK)
2544 eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK;
2545 else
2546 eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK;
2547 if (shift == 0)
2548 eflags_mask &= 0xffff;
2549 load_eflags(new_eflags, eflags_mask);
2550 env->hflags2 &= ~HF2_NMI_MASK;
2551 }
2552
2553 static inline void validate_seg(int seg_reg, int cpl)
2554 {
2555 int dpl;
2556 uint32_t e2;
2557
2558 /* XXX: on x86_64, we do not want to nullify FS and GS because
2559 they may still contain a valid base. I would be interested to
2560 know how a real x86_64 CPU behaves */
2561 if ((seg_reg == R_FS || seg_reg == R_GS) &&
2562 (env->segs[seg_reg].selector & 0xfffc) == 0)
2563 return;
2564
2565 e2 = env->segs[seg_reg].flags;
2566 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2567 if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
2568 /* data or non conforming code segment */
2569 if (dpl < cpl) {
2570 cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0);
2571 }
2572 }
2573 }
2574
2575 /* protected mode iret */
2576 static inline void helper_ret_protected(int shift, int is_iret, int addend)
2577 {
2578 uint32_t new_cs, new_eflags, new_ss;
2579 uint32_t new_es, new_ds, new_fs, new_gs;
2580 uint32_t e1, e2, ss_e1, ss_e2;
2581 int cpl, dpl, rpl, eflags_mask, iopl;
2582 target_ulong ssp, sp, new_eip, new_esp, sp_mask;
2583
2584 #ifdef TARGET_X86_64
2585 if (shift == 2)
2586 sp_mask = -1;
2587 else
2588 #endif
2589 sp_mask = get_sp_mask(env->segs[R_SS].flags);
2590 sp = ESP;
2591 ssp = env->segs[R_SS].base;
2592 new_eflags = 0; /* avoid warning */
2593 #ifdef TARGET_X86_64
2594 if (shift == 2) {
2595 POPQ(sp, new_eip);
2596 POPQ(sp, new_cs);
2597 new_cs &= 0xffff;
2598 if (is_iret) {
2599 POPQ(sp, new_eflags);
2600 }
2601 } else
2602 #endif
2603 if (shift == 1) {
2604 /* 32 bits */
2605 POPL(ssp, sp, sp_mask, new_eip);
2606 POPL(ssp, sp, sp_mask, new_cs);
2607 new_cs &= 0xffff;
2608 if (is_iret) {
2609 POPL(ssp, sp, sp_mask, new_eflags);
2610 if (new_eflags & VM_MASK)
2611 goto return_to_vm86;
2612 }
2613 } else {
2614 /* 16 bits */
2615 POPW(ssp, sp, sp_mask, new_eip);
2616 POPW(ssp, sp, sp_mask, new_cs);
2617 if (is_iret)
2618 POPW(ssp, sp, sp_mask, new_eflags);
2619 }
2620 LOG_PCALL("lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n",
2621 new_cs, new_eip, shift, addend);
2622 LOG_PCALL_STATE(env);
2623 if ((new_cs & 0xfffc) == 0)
2624 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2625 if (load_segment(&e1, &e2, new_cs) != 0)
2626 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2627 if (!(e2 & DESC_S_MASK) ||
2628 !(e2 & DESC_CS_MASK))
2629 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2630 cpl = env->hflags & HF_CPL_MASK;
2631 rpl = new_cs & 3;
2632 if (rpl < cpl)
2633 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2634 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2635 if (e2 & DESC_C_MASK) {
2636 if (dpl > rpl)
2637 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2638 } else {
2639 if (dpl != rpl)
2640 raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2641 }
2642 if (!(e2 & DESC_P_MASK))
2643 raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2644
2645 sp += addend;
2646 if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
2647 ((env->hflags & HF_CS64_MASK) && !is_iret))) {
2648 /* return to same privilege level */
2649 cpu_x86_load_seg_cache(env, R_CS, new_cs,
2650 get_seg_base(e1, e2),
2651 get_seg_limit(e1, e2),
2652 e2);
2653 } else {
2654 /* return to different privilege level */
2655 #ifdef TARGET_X86_64
2656 if (shift == 2) {
2657 POPQ(sp, new_esp);
2658 POPQ(sp, new_ss);
2659 new_ss &= 0xffff;
2660 } else
2661 #endif
2662 if (shift == 1) {
2663 /* 32 bits */
2664 POPL(ssp, sp, sp_mask, new_esp);
2665 POPL(ssp, sp, sp_mask, new_ss);
2666 new_ss &= 0xffff;
2667 } else {
2668 /* 16 bits */
2669 POPW(ssp, sp, sp_mask, new_esp);
2670 POPW(ssp, sp, sp_mask, new_ss);
2671 }
2672 LOG_PCALL("new ss:esp=%04x:" TARGET_FMT_lx "\n",
2673 new_ss, new_esp);
2674 if ((new_ss & 0xfffc) == 0) {
2675 #ifdef TARGET_X86_64
2676 /* NULL ss is allowed in long mode if cpl != 3*/
2677 /* XXX: test CS64 ? */
2678 if ((env->hflags & HF_LMA_MASK) && rpl != 3) {
2679 cpu_x86_load_seg_cache(env, R_SS, new_ss,
2680 0, 0xffffffff,
2681 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2682 DESC_S_MASK | (rpl << DESC_DPL_SHIFT) |
2683 DESC_W_MASK | DESC_A_MASK);
2684 ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
2685 } else
2686 #endif
2687 {
2688 raise_exception_err(EXCP0D_GPF, 0);
2689 }
2690 } else {
2691 if ((new_ss & 3) != rpl)
2692 raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
2693 if (load_segment(&ss_e1, &ss_e2, new_ss) != 0)
2694 raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
2695 if (!(ss_e2 & DESC_S_MASK) ||
2696 (ss_e2 & DESC_CS_MASK) ||
2697 !(ss_e2 & DESC_W_MASK))
2698 raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
2699 dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
2700 if (dpl != rpl)
2701 raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
2702 if (!(ss_e2 & DESC_P_MASK))
2703 raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
2704 cpu_x86_load_seg_cache(env, R_SS, new_ss,
2705 get_seg_base(ss_e1, ss_e2),
2706 get_seg_limit(ss_e1, ss_e2),
2707 ss_e2);
2708 }
2709
2710 cpu_x86_load_seg_cache(env, R_CS, new_cs,
2711 get_seg_base(e1, e2),
2712 get_seg_limit(e1, e2),
2713 e2);
2714 cpu_x86_set_cpl(env, rpl);
2715 sp = new_esp;
2716 #ifdef TARGET_X86_64
2717 if (env->hflags & HF_CS64_MASK)
2718 sp_mask = -1;
2719 else
2720 #endif
2721 sp_mask = get_sp_mask(ss_e2);
2722
2723 /* validate data segments */
2724 validate_seg(R_ES, rpl);
2725 validate_seg(R_DS, rpl);
2726 validate_seg(R_FS, rpl);
2727 validate_seg(R_GS, rpl);
2728
2729 sp += addend;
2730 }
2731 SET_ESP(sp, sp_mask);
2732 env->eip = new_eip;
2733 if (is_iret) {
2734 /* NOTE: 'cpl' is the _old_ CPL */
2735 eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK;
2736 if (cpl == 0)
2737 eflags_mask |= IOPL_MASK;
2738 iopl = (env->eflags >> IOPL_SHIFT) & 3;
2739 if (cpl <= iopl)
2740 eflags_mask |= IF_MASK;
2741 if (shift == 0)
2742 eflags_mask &= 0xffff;
2743 load_eflags(new_eflags, eflags_mask);
2744 }
2745 return;
2746
2747 return_to_vm86:
2748 POPL(ssp, sp, sp_mask, new_esp);
2749 POPL(ssp, sp, sp_mask, new_ss);
2750 POPL(ssp, sp, sp_mask, new_es);
2751 POPL(ssp, sp, sp_mask, new_ds);
2752 POPL(ssp, sp, sp_mask, new_fs);
2753 POPL(ssp, sp, sp_mask, new_gs);
2754
2755 /* modify processor state */
2756 load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK |
2757 IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK);
2758 load_seg_vm(R_CS, new_cs & 0xffff);
2759 cpu_x86_set_cpl(env, 3);
2760 load_seg_vm(R_SS, new_ss & 0xffff);
2761 load_seg_vm(R_ES, new_es & 0xffff);
2762 load_seg_vm(R_DS, new_ds & 0xffff);
2763 load_seg_vm(R_FS, new_fs & 0xffff);
2764 load_seg_vm(R_GS, new_gs & 0xffff);
2765
2766 env->eip = new_eip & 0xffff;
2767 ESP = new_esp;
2768 }
2769
2770 void helper_iret_protected(int shift, int next_eip)
2771 {
2772 int tss_selector, type;
2773 uint32_t e1, e2;
2774
2775 /* specific case for TSS */
2776 if (env->eflags & NT_MASK) {
2777 #ifdef TARGET_X86_64
2778 if (env->hflags & HF_LMA_MASK)
2779 raise_exception_err(EXCP0D_GPF, 0);
2780 #endif
2781 tss_selector = lduw_kernel(env->tr.base + 0);
2782 if (tss_selector & 4)
2783 raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
2784 if (load_segment(&e1, &e2, tss_selector) != 0)
2785 raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
2786 type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
2787 /* NOTE: we check both segment and busy TSS */
2788 if (type != 3)
2789 raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
2790 switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip);
2791 } else {
2792 helper_ret_protected(shift, 1, 0);
2793 }
2794 env->hflags2 &= ~HF2_NMI_MASK;
2795 #ifdef CONFIG_KQEMU
2796 if (kqemu_is_ok(env)) {
2797 CC_OP = CC_OP_EFLAGS;
2798 env->exception_index = -1;
2799 cpu_loop_exit();
2800 }
2801 #endif
2802 }
2803
2804 void helper_lret_protected(int shift, int addend)
2805 {
2806 helper_ret_protected(shift, 0, addend);
2807 #ifdef CONFIG_KQEMU
2808 if (kqemu_is_ok(env)) {
2809 env->exception_index = -1;
2810 cpu_loop_exit();
2811 }
2812 #endif
2813 }
2814
2815 void helper_sysenter(void)
2816 {
2817 if (env->sysenter_cs == 0) {
2818 raise_exception_err(EXCP0D_GPF, 0);
2819 }
2820 env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK);
2821 cpu_x86_set_cpl(env, 0);
2822
2823 #ifdef TARGET_X86_64
2824 if (env->hflags & HF_LMA_MASK) {
2825 cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
2826 0, 0xffffffff,
2827 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2828 DESC_S_MASK |
2829 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK);
2830 } else
2831 #endif
2832 {
2833 cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
2834 0, 0xffffffff,
2835 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2836 DESC_S_MASK |
2837 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
2838 }
2839 cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc,
2840 0, 0xffffffff,
2841 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2842 DESC_S_MASK |
2843 DESC_W_MASK | DESC_A_MASK);
2844 ESP = env->sysenter_esp;
2845 EIP = env->sysenter_eip;
2846 }
2847
2848 void helper_sysexit(int dflag)
2849 {
2850 int cpl;
2851
2852 cpl = env->hflags & HF_CPL_MASK;
2853 if (env->sysenter_cs == 0 || cpl != 0) {
2854 raise_exception_err(EXCP0D_GPF, 0);
2855 }
2856 cpu_x86_set_cpl(env, 3);
2857 #ifdef TARGET_X86_64
2858 if (dflag == 2) {
2859 cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 32) & 0xfffc) | 3,
2860 0, 0xffffffff,
2861 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2862 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
2863 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK);
2864 cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 40) & 0xfffc) | 3,
2865 0, 0xffffffff,
2866 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2867 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
2868 DESC_W_MASK | DESC_A_MASK);
2869 } else
2870 #endif
2871 {
2872 cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3,
2873 0, 0xffffffff,
2874 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2875 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
2876 DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK);
2877 cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3,
2878 0, 0xffffffff,
2879 DESC_G_MASK | DESC_B_MASK | DESC_P_MASK |
2880 DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
2881 DESC_W_MASK | DESC_A_MASK);
2882 }
2883 ESP = ECX;
2884 EIP = EDX;
2885 #ifdef CONFIG_KQEMU
2886 if (kqemu_is_ok(env)) {
2887 env->exception_index = -1;
2888 cpu_loop_exit();
2889 }
2890 #endif
2891 }
2892
2893 #if defined(CONFIG_USER_ONLY)
2894 target_ulong helper_read_crN(int reg)
2895 {
2896 return 0;
2897 }
2898
2899 void helper_write_crN(int reg, target_ulong t0)
2900 {
2901 }
2902
2903 void helper_movl_drN_T0(int reg, target_ulong t0)
2904 {
2905 }
2906 #else
2907 target_ulong helper_read_crN(int reg)
2908 {
2909 target_ulong val;
2910
2911 helper_svm_check_intercept_param(SVM_EXIT_READ_CR0 + reg, 0);
2912 switch(reg) {
2913 default:
2914 val = env->cr[reg];
2915 break;
2916 case 8:
2917 if (!(env->hflags2 & HF2_VINTR_MASK)) {
2918 val = cpu_get_apic_tpr(env);
2919 } else {
2920 val = env->v_tpr;
2921 }
2922 break;
2923 }
2924 return val;
2925 }
2926
2927 void helper_write_crN(int reg, target_ulong t0)
2928 {
2929 helper_svm_check_intercept_param(SVM_EXIT_WRITE_CR0 + reg, 0);
2930 switch(reg) {
2931 case 0:
2932 cpu_x86_update_cr0(env, t0);
2933 break;
2934 case 3:
2935 cpu_x86_update_cr3(env, t0);
2936 break;
2937 case 4:
2938 cpu_x86_update_cr4(env, t0);
2939 break;
2940 case 8:
2941 if (!(env->hflags2 & HF2_VINTR_MASK)) {
2942 cpu_set_apic_tpr(env, t0);
2943 }
2944 env->v_tpr = t0 & 0x0f;
2945 break;
2946 default:
2947 env->cr[reg] = t0;
2948 break;
2949 }
2950 }
2951
2952 void helper_movl_drN_T0(int reg, target_ulong t0)
2953 {
2954 int i;
2955
2956 if (reg < 4) {
2957 hw_breakpoint_remove(env, reg);
2958 env->dr[reg] = t0;
2959 hw_breakpoint_insert(env, reg);
2960 } else if (reg == 7) {
2961 for (i = 0; i < 4; i++)
2962 hw_breakpoint_remove(env, i);
2963 env->dr[7] = t0;
2964 for (i = 0; i < 4; i++)
2965 hw_breakpoint_insert(env, i);
2966 } else
2967 env->dr[reg] = t0;
2968 }
2969 #endif
2970
2971 void helper_lmsw(target_ulong t0)
2972 {
2973 /* only 4 lower bits of CR0 are modified. PE cannot be set to zero
2974 if already set to one. */
2975 t0 = (env->cr[0] & ~0xe) | (t0 & 0xf);
2976 helper_write_crN(0, t0);
2977 }
2978
2979 void helper_clts(void)
2980 {
2981 env->cr[0] &= ~CR0_TS_MASK;
2982 env->hflags &= ~HF_TS_MASK;
2983 }
2984
2985 void helper_invlpg(target_ulong addr)
2986 {
2987 helper_svm_check_intercept_param(SVM_EXIT_INVLPG, 0);
2988 tlb_flush_page(env, addr);
2989 }
2990
2991 void helper_rdtsc(void)
2992 {
2993 uint64_t val;
2994
2995 if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
2996 raise_exception(EXCP0D_GPF);
2997 }
2998 helper_svm_check_intercept_param(SVM_EXIT_RDTSC, 0);
2999
3000 val = cpu_get_tsc(env) + env->tsc_offset;
3001 EAX = (uint32_t)(val);
3002 EDX = (uint32_t)(val >> 32);
3003 }
3004
3005 void helper_rdpmc(void)
3006 {
3007 if ((env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
3008 raise_exception(EXCP0D_GPF);
3009 }
3010 helper_svm_check_intercept_param(SVM_EXIT_RDPMC, 0);
3011
3012 /* currently unimplemented */
3013 raise_exception_err(EXCP06_ILLOP, 0);
3014 }
3015
3016 #if defined(CONFIG_USER_ONLY)
3017 void helper_wrmsr(void)
3018 {
3019 }
3020
3021 void helper_rdmsr(void)
3022 {
3023 }
3024 #else
3025 void helper_wrmsr(void)
3026 {
3027 uint64_t val;
3028
3029 helper_svm_check_intercept_param(SVM_EXIT_MSR, 1);
3030
3031 val = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
3032
3033 switch((uint32_t)ECX) {
3034 case MSR_IA32_SYSENTER_CS:
3035 env->sysenter_cs = val & 0xffff;
3036 break;
3037 case MSR_IA32_SYSENTER_ESP:
3038 env->sysenter_esp = val;
3039 break;
3040 case MSR_IA32_SYSENTER_EIP:
3041 env->sysenter_eip = val;
3042 break;
3043 case MSR_IA32_APICBASE:
3044 cpu_set_apic_base(env, val);
3045 break;
3046 case MSR_EFER:
3047 {
3048 uint64_t update_mask;
3049 update_mask = 0;
3050 if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
3051 update_mask |= MSR_EFER_SCE;
3052 if (env->cpuid_ext2_features & CPUID_EXT2_LM)
3053 update_mask |= MSR_EFER_LME;
3054 if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
3055 update_mask |= MSR_EFER_FFXSR;
3056 if (env->cpuid_ext2_features & CPUID_EXT2_NX)
3057 update_mask |= MSR_EFER_NXE;
3058 if (env->cpuid_ext3_features & CPUID_EXT3_SVM)
3059 update_mask |= MSR_EFER_SVME;
3060 if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
3061 update_mask |= MSR_EFER_FFXSR;
3062 cpu_load_efer(env, (env->efer & ~update_mask) |
3063 (val & update_mask));
3064 }
3065 break;
3066 case MSR_STAR:
3067 env->star = val;
3068 break;
3069 case MSR_PAT:
3070 env->pat = val;
3071 break;
3072 case MSR_VM_HSAVE_PA:
3073 env->vm_hsave = val;
3074 break;
3075 #ifdef TARGET_X86_64
3076 case MSR_LSTAR:
3077 env->lstar = val;
3078 break;
3079 case MSR_CSTAR:
3080 env->cstar = val;
3081 break;
3082 case MSR_FMASK:
3083 env->fmask = val;
3084 break;
3085 case MSR_FSBASE:
3086 env->segs[R_FS].base = val;
3087 break;
3088 case MSR_GSBASE:
3089 env->segs[R_GS].base = val;
3090 break;
3091 case MSR_KERNELGSBASE:
3092 env->kernelgsbase = val;
3093 break;
3094 #endif
3095 case MSR_MTRRphysBase(0):
3096 case MSR_MTRRphysBase(1):
3097 case MSR_MTRRphysBase(2):
3098 case MSR_MTRRphysBase(3):
3099 case MSR_MTRRphysBase(4):
3100 case MSR_MTRRphysBase(5):
3101 case MSR_MTRRphysBase(6):
3102 case MSR_MTRRphysBase(7):
3103 env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base = val;
3104 break;
3105 case MSR_MTRRphysMask(0):
3106 case MSR_MTRRphysMask(1):
3107 case MSR_MTRRphysMask(2):
3108 case MSR_MTRRphysMask(3):
3109 case MSR_MTRRphysMask(4):
3110 case MSR_MTRRphysMask(5):
3111 case MSR_MTRRphysMask(6):
3112 case MSR_MTRRphysMask(7):
3113 env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask = val;
3114 break;
3115 case MSR_MTRRfix64K_00000:
3116 env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix64K_00000] = val;
3117 break;
3118 case MSR_MTRRfix16K_80000:
3119 case MSR_MTRRfix16K_A0000:
3120 env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1] = val;
3121 break;
3122 case MSR_MTRRfix4K_C0000:
3123 case MSR_MTRRfix4K_C8000:
3124 case MSR_MTRRfix4K_D0000:
3125 case MSR_MTRRfix4K_D8000:
3126 case MSR_MTRRfix4K_E0000:
3127 case MSR_MTRRfix4K_E8000:
3128 case MSR_MTRRfix4K_F0000:
3129 case MSR_MTRRfix4K_F8000:
3130 env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3] = val;
3131 break;
3132 case MSR_MTRRdefType:
3133 env->mtrr_deftype = val;
3134 break;
3135 case MSR_MCG_STATUS:
3136 env->mcg_status = val;
3137 break;
3138 case MSR_MCG_CTL:
3139 if ((env->mcg_cap & MCG_CTL_P)
3140 && (val == 0 || val == ~(uint64_t)0))
3141 env->mcg_ctl = val;
3142 break;
3143 default:
3144 if ((uint32_t)ECX >= MSR_MC0_CTL
3145 && (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) {
3146 uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL;
3147 if ((offset & 0x3) != 0
3148 || (val == 0 || val == ~(uint64_t)0))
3149 env->mce_banks[offset] = val;
3150 break;
3151 }
3152 /* XXX: exception ? */
3153 break;
3154 }
3155 }
3156
3157 void helper_rdmsr(void)
3158 {
3159 uint64_t val;
3160
3161 helper_svm_check_intercept_param(SVM_EXIT_MSR, 0);
3162
3163 switch((uint32_t)ECX) {
3164 case MSR_IA32_SYSENTER_CS:
3165 val = env->sysenter_cs;
3166 break;
3167 case MSR_IA32_SYSENTER_ESP:
3168 val = env->sysenter_esp;
3169 break;
3170 case MSR_IA32_SYSENTER_EIP:
3171 val = env->sysenter_eip;
3172 break;
3173 case MSR_IA32_APICBASE:
3174 val = cpu_get_apic_base(env);
3175 break;
3176 case MSR_EFER:
3177 val = env->efer;
3178 break;
3179 case MSR_STAR:
3180 val = env->star;
3181 break;
3182 case MSR_PAT:
3183 val = env->pat;
3184 break;
3185 case MSR_VM_HSAVE_PA:
3186 val = env->vm_hsave;
3187 break;
3188 case MSR_IA32_PERF_STATUS:
3189 /* tsc_increment_by_tick */
3190 val = 1000ULL;
3191 /* CPU multiplier */
3192 val |= (((uint64_t)4ULL) << 40);
3193 break;
3194 #ifdef TARGET_X86_64
3195 case MSR_LSTAR:
3196 val = env->lstar;
3197 break;
3198 case MSR_CSTAR:
3199 val = env->cstar;
3200 break;
3201 case MSR_FMASK:
3202 val = env->fmask;
3203 break;
3204 case MSR_FSBASE:
3205 val = env->segs[R_FS].base;
3206 break;
3207 case MSR_GSBASE:
3208 val = env->segs[R_GS].base;
3209 break;
3210 case MSR_KERNELGSBASE:
3211 val = env->kernelgsbase;
3212 break;
3213 #endif
3214 #ifdef CONFIG_KQEMU
3215 case MSR_QPI_COMMBASE:
3216 if (env->kqemu_enabled) {
3217 val = kqemu_comm_base;
3218 } else {
3219 val = 0;
3220 }
3221 break;
3222 #endif
3223 case MSR_MTRRphysBase(0):
3224 case MSR_MTRRphysBase(1):
3225 case MSR_MTRRphysBase(2):
3226 case MSR_MTRRphysBase(3):
3227 case MSR_MTRRphysBase(4):
3228 case MSR_MTRRphysBase(5):
3229 case MSR_MTRRphysBase(6):
3230 case MSR_MTRRphysBase(7):
3231 val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base;
3232 break;
3233 case MSR_MTRRphysMask(0):
3234 case MSR_MTRRphysMask(1):
3235 case MSR_MTRRphysMask(2):
3236 case MSR_MTRRphysMask(3):
3237 case MSR_MTRRphysMask(4):
3238 case MSR_MTRRphysMask(5):
3239 case MSR_MTRRphysMask(6):
3240 case MSR_MTRRphysMask(7):
3241 val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask;
3242 break;
3243 case MSR_MTRRfix64K_00000:
3244 val = env->mtrr_fixed[0];
3245 break;
3246 case MSR_MTRRfix16K_80000:
3247 case MSR_MTRRfix16K_A0000:
3248 val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1];
3249 break;
3250 case MSR_MTRRfix4K_C0000:
3251 case MSR_MTRRfix4K_C8000:
3252 case MSR_MTRRfix4K_D0000:
3253 case MSR_MTRRfix4K_D8000:
3254 case MSR_MTRRfix4K_E0000:
3255 case MSR_MTRRfix4K_E8000:
3256 case MSR_MTRRfix4K_F0000:
3257 case MSR_MTRRfix4K_F8000:
3258 val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3];
3259 break;
3260 case MSR_MTRRdefType:
3261 val = env->mtrr_deftype;
3262 break;
3263 case MSR_MTRRcap:
3264 if (env->cpuid_features & CPUID_MTRR)
3265 val = MSR_MTRRcap_VCNT | MSR_MTRRcap_FIXRANGE_SUPPORT | MSR_MTRRcap_WC_SUPPORTED;
3266 else
3267 /* XXX: exception ? */
3268 val = 0;
3269 break;
3270 case MSR_MCG_CAP:
3271 val = env->mcg_cap;
3272 break;
3273 case MSR_MCG_CTL:
3274 if (env->mcg_cap & MCG_CTL_P)
3275 val = env->mcg_ctl;
3276 else
3277 val = 0;
3278 break;
3279 case MSR_MCG_STATUS:
3280 val = env->mcg_status;
3281 break;
3282 default:
3283 if ((uint32_t)ECX >= MSR_MC0_CTL
3284 && (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) {
3285 uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL;
3286 val = env->mce_banks[offset];
3287 break;
3288 }
3289 /* XXX: exception ? */
3290 val = 0;
3291 break;
3292 }
3293 EAX = (uint32_t)(val);
3294 EDX = (uint32_t)(val >> 32);
3295 }
3296 #endif
3297
3298 target_ulong helper_lsl(target_ulong selector1)
3299 {
3300 unsigned int limit;
3301 uint32_t e1, e2, eflags, selector;
3302 int rpl, dpl, cpl, type;
3303
3304 selector = selector1 & 0xffff;
3305 eflags = helper_cc_compute_all(CC_OP);
3306 if ((selector & 0xfffc) == 0)
3307 goto fail;
3308 if (load_segment(&e1, &e2, selector) != 0)
3309 goto fail;
3310 rpl = selector & 3;
3311 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3312 cpl = env->hflags & HF_CPL_MASK;
3313 if (e2 & DESC_S_MASK) {
3314 if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
3315 /* conforming */
3316 } else {
3317 if (dpl < cpl || dpl < rpl)
3318 goto fail;
3319 }
3320 } else {
3321 type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
3322 switch(type) {
3323 case 1:
3324 case 2:
3325 case 3:
3326 case 9:
3327 case 11:
3328 break;
3329 default:
3330 goto fail;
3331 }
3332 if (dpl < cpl || dpl < rpl) {
3333 fail:
3334 CC_SRC = eflags & ~CC_Z;
3335 return 0;
3336 }
3337 }
3338 limit = get_seg_limit(e1, e2);
3339 CC_SRC = eflags | CC_Z;
3340 return limit;
3341 }
3342
3343 target_ulong helper_lar(target_ulong selector1)
3344 {
3345 uint32_t e1, e2, eflags, selector;
3346 int rpl, dpl, cpl, type;
3347
3348 selector = selector1 & 0xffff;
3349 eflags = helper_cc_compute_all(CC_OP);
3350 if ((selector & 0xfffc) == 0)
3351 goto fail;
3352 if (load_segment(&e1, &e2, selector) != 0)
3353 goto fail;
3354 rpl = selector & 3;
3355 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3356 cpl = env->hflags & HF_CPL_MASK;
3357 if (e2 & DESC_S_MASK) {
3358 if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
3359 /* conforming */
3360 } else {
3361 if (dpl < cpl || dpl < rpl)
3362 goto fail;
3363 }
3364 } else {
3365 type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
3366 switch(type) {
3367 case 1:
3368 case 2:
3369 case 3:
3370 case 4:
3371 case 5:
3372 case 9:
3373 case 11:
3374 case 12:
3375 break;
3376 default:
3377 goto fail;
3378 }
3379 if (dpl < cpl || dpl < rpl) {
3380 fail:
3381 CC_SRC = eflags & ~CC_Z;
3382 return 0;
3383 }
3384 }
3385 CC_SRC = eflags | CC_Z;
3386 return e2 & 0x00f0ff00;
3387 }
3388
3389 void helper_verr(target_ulong selector1)
3390 {
3391 uint32_t e1, e2, eflags, selector;
3392 int rpl, dpl, cpl;
3393
3394 selector = selector1 & 0xffff;
3395 eflags = helper_cc_compute_all(CC_OP);
3396 if ((selector & 0xfffc) == 0)
3397 goto fail;
3398 if (load_segment(&e1, &e2, selector) != 0)
3399 goto fail;
3400 if (!(e2 & DESC_S_MASK))
3401 goto fail;
3402 rpl = selector & 3;
3403 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3404 cpl = env->hflags & HF_CPL_MASK;
3405 if (e2 & DESC_CS_MASK) {
3406 if (!(e2 & DESC_R_MASK))
3407 goto fail;
3408 if (!(e2 & DESC_C_MASK)) {
3409 if (dpl < cpl || dpl < rpl)
3410 goto fail;
3411 }
3412 } else {
3413 if (dpl < cpl || dpl < rpl) {
3414 fail:
3415 CC_SRC = eflags & ~CC_Z;
3416 return;
3417 }
3418 }
3419 CC_SRC = eflags | CC_Z;
3420 }
3421
3422 void helper_verw(target_ulong selector1)
3423 {
3424 uint32_t e1, e2, eflags, selector;
3425 int rpl, dpl, cpl;
3426
3427 selector = selector1 & 0xffff;
3428 eflags = helper_cc_compute_all(CC_OP);
3429 if ((selector & 0xfffc) == 0)
3430 goto fail;
3431 if (load_segment(&e1, &e2, selector) != 0)
3432 goto fail;
3433 if (!(e2 & DESC_S_MASK))
3434 goto fail;
3435 rpl = selector & 3;
3436 dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3437 cpl = env->hflags & HF_CPL_MASK;
3438 if (e2 & DESC_CS_MASK) {
3439 goto fail;
3440 } else {
3441 if (dpl < cpl || dpl < rpl)
3442 goto fail;
3443 if (!(e2 & DESC_W_MASK)) {
3444 fail:
3445 CC_SRC = eflags & ~CC_Z;
3446 return;
3447 }
3448 }
3449 CC_SRC = eflags | CC_Z;
3450 }
3451
3452 /* x87 FPU helpers */
3453
3454 static void fpu_set_exception(int mask)
3455 {
3456 env->fpus |= mask;
3457 if (env->fpus & (~env->fpuc & FPUC_EM))
3458 env->fpus |= FPUS_SE | FPUS_B;
3459 }
3460
3461 static inline CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b)
3462 {
3463 if (b == 0.0)
3464 fpu_set_exception(FPUS_ZE);
3465 return a / b;
3466 }
3467
3468 static void fpu_raise_exception(void)
3469 {
3470 if (env->cr[0] & CR0_NE_MASK) {
3471 raise_exception(EXCP10_COPR);
3472 }
3473 #if !defined(CONFIG_USER_ONLY)
3474 else {
3475 cpu_set_ferr(env);
3476 }
3477 #endif
3478 }
3479
3480 void helper_flds_FT0(uint32_t val)
3481 {
3482 union {
3483 float32 f;
3484 uint32_t i;
3485 } u;
3486 u.i = val;
3487 FT0 = float32_to_floatx(u.f, &env->fp_status);
3488 }
3489
3490 void helper_fldl_FT0(uint64_t val)
3491 {
3492 union {
3493 float64 f;
3494 uint64_t i;
3495 } u;
3496 u.i = val;
3497 FT0 = float64_to_floatx(u.f, &env->fp_status);
3498 }
3499
3500 void helper_fildl_FT0(int32_t val)
3501 {
3502 FT0 = int32_to_floatx(val, &env->fp_status);
3503 }
3504
3505 void helper_flds_ST0(uint32_t val)
3506 {
3507 int new_fpstt;
3508 union {
3509 float32 f;
3510 uint32_t i;
3511 } u;
3512 new_fpstt = (env->fpstt - 1) & 7;
3513 u.i = val;
3514 env->fpregs[new_fpstt].d = float32_to_floatx(u.f, &env->fp_status);
3515 env->fpstt = new_fpstt;
3516 env->fptags[new_fpstt] = 0; /* validate stack entry */
3517 }
3518
3519 void helper_fldl_ST0(uint64_t val)
3520 {
3521 int new_fpstt;
3522 union {
3523 float64 f;
3524 uint64_t i;
3525 } u;
3526 new_fpstt = (env->fpstt - 1) & 7;
3527 u.i = val;
3528 env->fpregs[new_fpstt].d = float64_to_floatx(u.f, &env->fp_status);
3529 env->fpstt = new_fpstt;
3530 env->fptags[new_fpstt] = 0; /* validate stack entry */
3531 }
3532
3533 void helper_fildl_ST0(int32_t val)
3534 {
3535 int new_fpstt;
3536 new_fpstt = (env->fpstt - 1) & 7;
3537 env->fpregs[new_fpstt].d = int32_to_floatx(val, &env->fp_status);
3538 env->fpstt = new_fpstt;
3539 env->fptags[new_fpstt] = 0; /* validate stack entry */
3540 }
3541
3542 void helper_fildll_ST0(int64_t val)
3543 {
3544 int new_fpstt;
3545 new_fpstt = (env->fpstt - 1) & 7;
3546 env->fpregs[new_fpstt].d = int64_to_floatx(val, &env->fp_status);
3547 env->fpstt = new_fpstt;
3548 env->fptags[new_fpstt] = 0; /* validate stack entry */
3549 }
3550
3551 uint32_t helper_fsts_ST0(void)
3552 {
3553 union {
3554 float32 f;
3555 uint32_t i;
3556 } u;
3557 u.f = floatx_to_float32(ST0, &env->fp_status);
3558 return u.i;
3559 }
3560
3561 uint64_t helper_fstl_ST0(void)
3562 {
3563 union {
3564 float64 f;
3565 uint64_t i;
3566 } u;
3567 u.f = floatx_to_float64(ST0, &env->fp_status);
3568 return u.i;
3569 }
3570
3571 int32_t helper_fist_ST0(void)
3572 {
3573 int32_t val;
3574 val = floatx_to_int32(ST0, &env->fp_status);
3575 if (val != (int16_t)val)
3576 val = -32768;
3577 return val;
3578 }
3579
3580 int32_t helper_fistl_ST0(void)
3581 {
3582 int32_t val;
3583 val = floatx_to_int32(ST0, &env->fp_status);
3584 return val;
3585 }
3586
3587 int64_t helper_fistll_ST0(void)
3588 {
3589 int64_t val;
3590 val = floatx_to_int64(ST0, &env->fp_status);
3591 return val;
3592 }
3593
3594 int32_t helper_fistt_ST0(void)
3595 {
3596 int32_t val;
3597 val = floatx_to_int32_round_to_zero(ST0, &env->fp_status);
3598 if (val != (int16_t)val)
3599 val = -32768;
3600 return val;
3601 }
3602
3603 int32_t helper_fisttl_ST0(void)
3604 {
3605 int32_t val;
3606 val = floatx_to_int32_round_to_zero(ST0, &env->fp_status);
3607 return val;
3608 }
3609
3610 int64_t helper_fisttll_ST0(void)
3611 {
3612 int64_t val;
3613 val = floatx_to_int64_round_to_zero(ST0, &env->fp_status);
3614 return val;
3615 }
3616
3617 void helper_fldt_ST0(target_ulong ptr)
3618 {
3619 int new_fpstt;
3620 new_fpstt = (env->fpstt - 1) & 7;
3621 env->fpregs[new_fpstt].d = helper_fldt(ptr);
3622 env->fpstt = new_fpstt;
3623 env->fptags[new_fpstt] = 0; /* validate stack entry */
3624 }
3625
3626 void helper_fstt_ST0(target_ulong ptr)
3627 {
3628 helper_fstt(ST0, ptr);
3629 }
3630
3631 void helper_fpush(void)
3632 {
3633 fpush();
3634 }
3635
3636 void helper_fpop(void)
3637 {
3638 fpop();
3639 }
3640
3641 void helper_fdecstp(void)
3642 {
3643 env->fpstt = (env->fpstt - 1) & 7;
3644 env->fpus &= (~0x4700);
3645 }
3646
3647 void helper_fincstp(void)
3648 {
3649 env->fpstt = (env->fpstt + 1) & 7;
3650 env->fpus &= (~0x4700);
3651 }
3652
3653 /* FPU move */
3654
3655 void helper_ffree_STN(int st_index)
3656 {
3657 env->fptags[(env->fpstt + st_index) & 7] = 1;
3658 }
3659
3660 void helper_fmov_ST0_FT0(void)
3661 {
3662 ST0 = FT0;
3663 }
3664
3665 void helper_fmov_FT0_STN(int st_index)
3666 {
3667 FT0 = ST(st_index);
3668 }
3669
3670 void helper_fmov_ST0_STN(int st_index)
3671 {
3672 ST0 = ST(st_index);
3673 }
3674
3675 void helper_fmov_STN_ST0(int st_index)
3676 {
3677 ST(st_index) = ST0;
3678 }
3679
3680 void helper_fxchg_ST0_STN(int st_index)
3681 {
3682 CPU86_LDouble tmp;
3683 tmp = ST(st_index);
3684 ST(st_index) = ST0;
3685 ST0 = tmp;
3686 }
3687
3688 /* FPU operations */
3689
3690 static const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500};
3691
3692 void helper_fcom_ST0_FT0(void)
3693 {
3694 int ret;
3695
3696 ret = floatx_compare(ST0, FT0, &env->fp_status);
3697 env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1];
3698 }
3699
3700 void helper_fucom_ST0_FT0(void)
3701 {
3702 int ret;
3703
3704 ret = floatx_compare_quiet(ST0, FT0, &env->fp_status);
3705 env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret+ 1];
3706 }
3707
3708 static const int fcomi_ccval[4] = {CC_C, CC_Z, 0, CC_Z | CC_P | CC_C};
3709
3710 void helper_fcomi_ST0_FT0(void)
3711 {
3712 int eflags;
3713 int ret;
3714
3715 ret = floatx_compare(ST0, FT0, &env->fp_status);
3716 eflags = helper_cc_compute_all(CC_OP);
3717 eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
3718 CC_SRC = eflags;
3719 }
3720
3721 void helper_fucomi_ST0_FT0(void)
3722 {
3723 int eflags;
3724 int ret;
3725
3726 ret = floatx_compare_quiet(ST0, FT0, &env->fp_status);
3727 eflags = helper_cc_compute_all(CC_OP);
3728 eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
3729 CC_SRC = eflags;
3730 }
3731
3732 void helper_fadd_ST0_FT0(void)
3733 {
3734 ST0 += FT0;
3735 }
3736
3737 void helper_fmul_ST0_FT0(void)
3738 {
3739 ST0 *= FT0;
3740 }
3741
3742 void helper_fsub_ST0_FT0(void)
3743 {
3744 ST0 -= FT0;
3745 }
3746
3747 void helper_fsubr_ST0_FT0(void)
3748 {
3749 ST0 = FT0 - ST0;
3750 }
3751
3752 void helper_fdiv_ST0_FT0(void)
3753 {
3754 ST0 = helper_fdiv(ST0, FT0);
3755 }
3756
3757 void helper_fdivr_ST0_FT0(void)
3758 {
3759 ST0 = helper_fdiv(FT0, ST0);
3760 }
3761
3762 /* fp operations between STN and ST0 */
3763
3764 void helper_fadd_STN_ST0(int st_index)
3765 {
3766 ST(st_index) += ST0;
3767 }
3768
3769 void helper_fmul_STN_ST0(int st_index)
3770 {
3771 ST(st_index) *= ST0;
3772 }
3773
3774 void helper_fsub_STN_ST0(int st_index)
3775 {
3776 ST(st_index) -= ST0;
3777 }
3778
3779 void helper_fsubr_STN_ST0(int st_index)
3780 {
3781 CPU86_LDouble *p;
3782 p = &ST(st_index);
3783 *p = ST0 - *p;
3784 }
3785
3786 void helper_fdiv_STN_ST0(int st_index)
3787 {
3788 CPU86_LDouble *p;
3789 p = &ST(st_index);
3790 *p = helper_fdiv(*p, ST0);
3791 }
3792
3793 void helper_fdivr_STN_ST0(int st_index)
3794 {
3795 CPU86_LDouble *p;
3796 p = &ST(st_index);
3797 *p = helper_fdiv(ST0, *p);
3798 }
3799
3800 /* misc FPU operations */
3801 void helper_fchs_ST0(void)
3802 {
3803 ST0 = floatx_chs(ST0);
3804 }
3805
3806 void helper_fabs_ST0(void)
3807 {
3808 ST0 = floatx_abs(ST0);
3809 }
3810
3811 void helper_fld1_ST0(void)
3812 {
3813 ST0 = f15rk[1];
3814 }
3815
3816 void helper_fldl2t_ST0(void)
3817 {
3818 ST0 = f15rk[6];
3819 }
3820
3821 void helper_fldl2e_ST0(void)
3822 {
3823 ST0 = f15rk[5];
3824 }
3825
3826 void helper_fldpi_ST0(void)
3827 {
3828 ST0 = f15rk[2];
3829 }
3830
3831 void helper_fldlg2_ST0(void)
3832 {
3833 ST0 = f15rk[3];
3834 }
3835
3836 void helper_fldln2_ST0(void)
3837 {
3838 ST0 = f15rk[4];
3839 }
3840
3841 void helper_fldz_ST0(void)
3842 {
3843 ST0 = f15rk[0];
3844 }
3845
3846 void helper_fldz_FT0(void)
3847 {
3848 FT0 = f15rk[0];
3849 }
3850
3851 uint32_t helper_fnstsw(void)
3852 {
3853 return (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
3854 }
3855
3856 uint32_t helper_fnstcw(void)
3857 {
3858 return env->fpuc;
3859 }
3860
3861 static void update_fp_status(void)
3862 {
3863 int rnd_type;
3864
3865 /* set rounding mode */
3866 switch(env->fpuc & RC_MASK) {
3867 default:
3868 case RC_NEAR:
3869 rnd_type = float_round_nearest_even;
3870 break;
3871 case RC_DOWN:
3872 rnd_type = float_round_down;
3873 break;
3874 case RC_UP:
3875 rnd_type = float_round_up;
3876 break;
3877 case RC_CHOP:
3878 rnd_type = float_round_to_zero;
3879 break;
3880 }
3881 set_float_rounding_mode(rnd_type, &env->fp_status);
3882 #ifdef FLOATX80
3883 switch((env->fpuc >> 8) & 3) {
3884 case 0:
3885 rnd_type = 32;
3886 break;
3887 case 2:
3888 rnd_type = 64;
3889 break;
3890 case 3:
3891 default:
3892 rnd_type = 80;
3893 break;
3894 }
3895 set_floatx80_rounding_precision(rnd_type, &env->fp_status);
3896 #endif
3897 }
3898
3899 void helper_fldcw(uint32_t val)
3900 {
3901 env->fpuc = val;
3902 update_fp_status();
3903 }
3904
3905 void helper_fclex(void)
3906 {
3907 env->fpus &= 0x7f00;
3908 }
3909
3910 void helper_fwait(void)
3911 {
3912 if (env->fpus & FPUS_SE)
3913 fpu_raise_exception();
3914 }
3915
3916 void helper_fninit(void)
3917 {
3918 env->fpus = 0;
3919 env->fpstt = 0;
3920 env->fpuc = 0x37f;
3921 env->fptags[0] = 1;
3922 env->fptags[1] = 1;
3923 env->fptags[2] = 1;
3924 env->fptags[3] = 1;
3925 env->fptags[4] = 1;
3926 env->fptags[5] = 1;
3927 env->fptags[6] = 1;
3928 env->fptags[7] = 1;
3929 }
3930
3931 /* BCD ops */
3932
3933 void helper_fbld_ST0(target_ulong ptr)
3934 {
3935 CPU86_LDouble tmp;
3936 uint64_t val;
3937 unsigned int v;
3938 int i;
3939
3940 val = 0;
3941 for(i = 8; i >= 0; i--) {
3942 v = ldub(ptr + i);
3943 val = (val * 100) + ((v >> 4) * 10) + (v & 0xf);
3944 }
3945 tmp = val;
3946 if (ldub(ptr + 9) & 0x80)
3947 tmp = -tmp;
3948 fpush();
3949 ST0 = tmp;
3950 }
3951
3952 void helper_fbst_ST0(target_ulong ptr)
3953 {
3954 int v;
3955 target_ulong mem_ref, mem_end;
3956 int64_t val;
3957
3958 val = floatx_to_int64(ST0, &env->fp_status);
3959 mem_ref = ptr;
3960 mem_end = mem_ref + 9;
3961 if (val < 0) {
3962 stb(mem_end, 0x80);
3963 val = -val;
3964 } else {
3965 stb(mem_end, 0x00);
3966 }
3967 while (mem_ref < mem_end) {
3968 if (val == 0)
3969 break;
3970 v = val % 100;
3971 val = val / 100;
3972 v = ((v / 10) << 4) | (v % 10);
3973 stb(mem_ref++, v);
3974 }
3975 while (mem_ref < mem_end) {
3976 stb(mem_ref++, 0);
3977 }
3978 }
3979
3980 void helper_f2xm1(void)
3981 {
3982 ST0 = pow(2.0,ST0) - 1.0;
3983 }
3984
3985 void helper_fyl2x(void)
3986 {
3987 CPU86_LDouble fptemp;
3988
3989 fptemp = ST0;
3990 if (fptemp>0.0){
3991 fptemp = log(fptemp)/log(2.0); /* log2(ST) */
3992 ST1 *= fptemp;
3993 fpop();
3994 } else {
3995 env->fpus &= (~0x4700);
3996 env->fpus |= 0x400;
3997 }
3998 }
3999
4000 void helper_fptan(void)
4001 {
4002 CPU86_LDouble fptemp;
4003
4004 fptemp = ST0;
4005 if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
4006 env->fpus |= 0x400;
4007 } else {
4008 ST0 = tan(fptemp);
4009 fpush();
4010 ST0 = 1.0;
4011 env->fpus &= (~0x400); /* C2 <-- 0 */
4012 /* the above code is for |arg| < 2**52 only */
4013 }
4014 }
4015
4016 void helper_fpatan(void)
4017 {
4018 CPU86_LDouble fptemp, fpsrcop;
4019
4020 fpsrcop = ST1;
4021 fptemp = ST0;
4022 ST1 = atan2(fpsrcop,fptemp);
4023 fpop();
4024 }
4025
4026 void helper_fxtract(void)
4027 {
4028 CPU86_LDoubleU temp;
4029 unsigned int expdif;
4030
4031 temp.d = ST0;
4032 expdif = EXPD(temp) - EXPBIAS;
4033 /*DP exponent bias*/
4034 ST0 = expdif;
4035 fpush();
4036 BIASEXPONENT(temp);
4037 ST0 = temp.d;
4038 }
4039
4040 void helper_fprem1(void)
4041 {
4042 CPU86_LDouble dblq, fpsrcop, fptemp;
4043 CPU86_LDoubleU fpsrcop1, fptemp1;
4044 int expdif;
4045 signed long long int q;
4046
4047 if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) {
4048 ST0 = 0.0 / 0.0; /* NaN */
4049 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4050 return;
4051 }
4052
4053 fpsrcop = ST0;
4054 fptemp = ST1;
4055 fpsrcop1.d = fpsrcop;
4056 fptemp1.d = fptemp;
4057 expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
4058
4059 if (expdif < 0) {
4060 /* optimisation? taken from the AMD docs */
4061 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4062 /* ST0 is unchanged */
4063 return;
4064 }
4065
4066 if (expdif < 53) {
4067 dblq = fpsrcop / fptemp;
4068 /* round dblq towards nearest integer */
4069 dblq = rint(dblq);
4070 ST0 = fpsrcop - fptemp * dblq;
4071
4072 /* convert dblq to q by truncating towards zero */
4073 if (dblq < 0.0)
4074 q = (signed long long int)(-dblq);
4075 else
4076 q = (signed long long int)dblq;
4077
4078 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4079 /* (C0,C3,C1) <-- (q2,q1,q0) */
4080 env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */
4081 env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */
4082 env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */
4083 } else {
4084 env->fpus |= 0x400; /* C2 <-- 1 */
4085 fptemp = pow(2.0, expdif - 50);
4086 fpsrcop = (ST0 / ST1) / fptemp;
4087 /* fpsrcop = integer obtained by chopping */
4088 fpsrcop = (fpsrcop < 0.0) ?
4089 -(floor(fabs(fpsrcop))) : floor(fpsrcop);
4090 ST0 -= (ST1 * fpsrcop * fptemp);
4091 }
4092 }
4093
4094 void helper_fprem(void)
4095 {
4096 CPU86_LDouble dblq, fpsrcop, fptemp;
4097 CPU86_LDoubleU fpsrcop1, fptemp1;
4098 int expdif;
4099 signed long long int q;
4100
4101 if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) {
4102 ST0 = 0.0 / 0.0; /* NaN */
4103 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4104 return;
4105 }
4106
4107 fpsrcop = (CPU86_LDouble)ST0;
4108 fptemp = (CPU86_LDouble)ST1;
4109 fpsrcop1.d = fpsrcop;
4110 fptemp1.d = fptemp;
4111 expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
4112
4113 if (expdif < 0) {
4114 /* optimisation? taken from the AMD docs */
4115 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4116 /* ST0 is unchanged */
4117 return;
4118 }
4119
4120 if ( expdif < 53 ) {
4121 dblq = fpsrcop/*ST0*/ / fptemp/*ST1*/;
4122 /* round dblq towards zero */
4123 dblq = (dblq < 0.0) ? ceil(dblq) : floor(dblq);
4124 ST0 = fpsrcop/*ST0*/ - fptemp * dblq;
4125
4126 /* convert dblq to q by truncating towards zero */
4127 if (dblq < 0.0)
4128 q = (signed long long int)(-dblq);
4129 else
4130 q = (signed long long int)dblq;
4131
4132 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4133 /* (C0,C3,C1) <-- (q2,q1,q0) */
4134 env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */
4135 env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */
4136 env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */
4137 } else {
4138 int N = 32 + (expdif % 32); /* as per AMD docs */
4139 env->fpus |= 0x400; /* C2 <-- 1 */
4140 fptemp = pow(2.0, (double)(expdif - N));
4141 fpsrcop = (ST0 / ST1) / fptemp;
4142 /* fpsrcop = integer obtained by chopping */
4143 fpsrcop = (fpsrcop < 0.0) ?
4144 -(floor(fabs(fpsrcop))) : floor(fpsrcop);
4145 ST0 -= (ST1 * fpsrcop * fptemp);
4146 }
4147 }
4148
4149 void helper_fyl2xp1(void)
4150 {
4151 CPU86_LDouble fptemp;
4152
4153 fptemp = ST0;
4154 if ((fptemp+1.0)>0.0) {
4155 fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
4156 ST1 *= fptemp;
4157 fpop();
4158 } else {
4159 env->fpus &= (~0x4700);
4160 env->fpus |= 0x400;
4161 }
4162 }
4163
4164 void helper_fsqrt(void)
4165 {
4166 CPU86_LDouble fptemp;
4167
4168 fptemp = ST0;
4169 if (fptemp<0.0) {
4170 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4171 env->fpus |= 0x400;
4172 }
4173 ST0 = sqrt(fptemp);
4174 }
4175
4176 void helper_fsincos(void)
4177 {
4178 CPU86_LDouble fptemp;
4179
4180 fptemp = ST0;
4181 if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
4182 env->fpus |= 0x400;
4183 } else {
4184 ST0 = sin(fptemp);
4185 fpush();
4186 ST0 = cos(fptemp);
4187 env->fpus &= (~0x400); /* C2 <-- 0 */
4188 /* the above code is for |arg| < 2**63 only */
4189 }
4190 }
4191
4192 void helper_frndint(void)
4193 {
4194 ST0 = floatx_round_to_int(ST0, &env->fp_status);
4195 }
4196
4197 void helper_fscale(void)
4198 {
4199 ST0 = ldexp (ST0, (int)(ST1));
4200 }
4201
4202 void helper_fsin(void)
4203 {
4204 CPU86_LDouble fptemp;
4205
4206 fptemp = ST0;
4207 if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
4208 env->fpus |= 0x400;
4209 } else {
4210 ST0 = sin(fptemp);
4211 env->fpus &= (~0x400); /* C2 <-- 0 */
4212 /* the above code is for |arg| < 2**53 only */
4213 }
4214 }
4215
4216 void helper_fcos(void)
4217 {
4218 CPU86_LDouble fptemp;
4219
4220 fptemp = ST0;
4221 if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
4222 env->fpus |= 0x400;
4223 } else {
4224 ST0 = cos(fptemp);
4225 env->fpus &= (~0x400); /* C2 <-- 0 */
4226 /* the above code is for |arg5 < 2**63 only */
4227 }
4228 }
4229
4230 void helper_fxam_ST0(void)
4231 {
4232 CPU86_LDoubleU temp;
4233 int expdif;
4234
4235 temp.d = ST0;
4236
4237 env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4238 if (SIGND(temp))
4239 env->fpus |= 0x200; /* C1 <-- 1 */
4240
4241 /* XXX: test fptags too */
4242 expdif = EXPD(temp);
4243 if (expdif == MAXEXPD) {
4244 #ifdef USE_X86LDOUBLE
4245 if (MANTD(temp) == 0x8000000000000000ULL)
4246 #else
4247 if (MANTD(temp) == 0)
4248 #endif
4249 env->fpus |= 0x500 /*Infinity*/;
4250 else
4251 env->fpus |= 0x100 /*NaN*/;
4252 } else if (expdif == 0) {
4253 if (MANTD(temp) == 0)
4254 env->fpus |= 0x4000 /*Zero*/;
4255 else
4256 env->fpus |= 0x4400 /*Denormal*/;
4257 } else {
4258 env->fpus |= 0x400;
4259 }
4260 }
4261
4262 void helper_fstenv(target_ulong ptr, int data32)
4263 {
4264 int fpus, fptag, exp, i;
4265 uint64_t mant;
4266 CPU86_LDoubleU tmp;
4267
4268 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
4269 fptag = 0;
4270 for (i=7; i>=0; i--) {
4271 fptag <<= 2;
4272 if (env->fptags[i]) {
4273 fptag |= 3;
4274 } else {
4275 tmp.d = env->fpregs[i].d;
4276 exp = EXPD(tmp);
4277 mant = MANTD(tmp);
4278 if (exp == 0 && mant == 0) {
4279 /* zero */
4280 fptag |= 1;
4281 } else if (exp == 0 || exp == MAXEXPD
4282 #ifdef USE_X86LDOUBLE
4283 || (mant & (1LL << 63)) == 0
4284 #endif
4285 ) {
4286 /* NaNs, infinity, denormal */
4287 fptag |= 2;
4288 }
4289 }
4290 }
4291 if (data32) {
4292 /* 32 bit */
4293 stl(ptr, env->fpuc);
4294 stl(ptr + 4, fpus);
4295 stl(ptr + 8, fptag);
4296 stl(ptr + 12, 0); /* fpip */
4297 stl(ptr + 16, 0); /* fpcs */
4298 stl(ptr + 20, 0); /* fpoo */
4299 stl(ptr + 24, 0); /* fpos */
4300 } else {
4301 /* 16 bit */
4302 stw(ptr, env->fpuc);
4303 stw(ptr + 2, fpus);
4304 stw(ptr + 4, fptag);
4305 stw(ptr + 6, 0);
4306 stw(ptr + 8, 0);
4307 stw(ptr + 10, 0);
4308 stw(ptr + 12, 0);
4309 }
4310 }
4311
4312 void helper_fldenv(target_ulong ptr, int data32)
4313 {
4314 int i, fpus, fptag;
4315
4316 if (data32) {
4317 env->fpuc = lduw(ptr);
4318 fpus = lduw(ptr + 4);
4319 fptag = lduw(ptr + 8);
4320 }
4321 else {
4322 env->fpuc = lduw(ptr);
4323 fpus = lduw(ptr + 2);
4324 fptag = lduw(ptr + 4);
4325 }
4326 env->fpstt = (fpus >> 11) & 7;
4327 env->fpus = fpus & ~0x3800;
4328 for(i = 0;i < 8; i++) {
4329 env->fptags[i] = ((fptag & 3) == 3);
4330 fptag >>= 2;
4331 }
4332 }
4333
4334 void helper_fsave(target_ulong ptr, int data32)
4335 {
4336 CPU86_LDouble tmp;
4337 int i;
4338
4339 helper_fstenv(ptr, data32);
4340
4341 ptr += (14 << data32);
4342 for(i = 0;i < 8; i++) {
4343 tmp = ST(i);
4344 helper_fstt(tmp, ptr);
4345 ptr += 10;
4346 }
4347
4348 /* fninit */
4349 env->fpus = 0;
4350 env->fpstt = 0;
4351 env->fpuc = 0x37f;
4352 env->fptags[0] = 1;
4353 env->fptags[1] = 1;
4354 env->fptags[2] = 1;
4355 env->fptags[3] = 1;
4356 env->fptags[4] = 1;
4357 env->fptags[5] = 1;
4358 env->fptags[6] = 1;
4359 env->fptags[7] = 1;
4360 }
4361
4362 void helper_frstor(target_ulong ptr, int data32)
4363 {
4364 CPU86_LDouble tmp;
4365 int i;
4366
4367 helper_fldenv(ptr, data32);
4368 ptr += (14 << data32);
4369
4370 for(i = 0;i < 8; i++) {
4371 tmp = helper_fldt(ptr);
4372 ST(i) = tmp;
4373 ptr += 10;
4374 }
4375 }
4376
4377 void helper_fxsave(target_ulong ptr, int data64)
4378 {
4379 int fpus, fptag, i, nb_xmm_regs;
4380 CPU86_LDouble tmp;
4381 target_ulong addr;
4382
4383 fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
4384 fptag = 0;
4385 for(i = 0; i < 8; i++) {
4386 fptag |= (env->fptags[i] << i);
4387 }
4388 stw(ptr, env->fpuc);
4389 stw(ptr + 2, fpus);
4390 stw(ptr + 4, fptag ^ 0xff);
4391 #ifdef TARGET_X86_64
4392 if (data64) {
4393 stq(ptr + 0x08, 0); /* rip */
4394 stq(ptr + 0x10, 0); /* rdp */
4395 } else
4396 #endif
4397 {
4398 stl(ptr + 0x08, 0); /* eip */
4399 stl(ptr + 0x0c, 0); /* sel */
4400 stl(ptr + 0x10, 0); /* dp */
4401 stl(ptr + 0x14, 0); /* sel */
4402 }
4403
4404 addr = ptr + 0x20;
4405 for(i = 0;i < 8; i++) {
4406 tmp = ST(i);
4407 helper_fstt(tmp, addr);
4408 addr += 16;
4409 }
4410
4411 if (env->cr[4] & CR4_OSFXSR_MASK) {
4412 /* XXX: finish it */
4413 stl(ptr + 0x18, env->mxcsr); /* mxcsr */
4414 stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */
4415 if (env->hflags & HF_CS64_MASK)
4416 nb_xmm_regs = 16;
4417 else
4418 nb_xmm_regs = 8;
4419 addr = ptr + 0xa0;
4420 /* Fast FXSAVE leaves out the XMM registers */
4421 if (!(env->efer & MSR_EFER_FFXSR)
4422 || (env->hflags & HF_CPL_MASK)
4423 || !(env->hflags & HF_LMA_MASK)) {
4424 for(i = 0; i < nb_xmm_regs; i++) {
4425 stq(addr, env->xmm_regs[i].XMM_Q(0));
4426 stq(addr + 8, env->xmm_regs[i].XMM_Q(1));
4427 addr += 16;
4428 }
4429 }
4430 }
4431 }
4432
4433 void helper_fxrstor(target_ulong ptr, int data64)
4434 {
4435 int i, fpus, fptag, nb_xmm_regs;
4436 CPU86_LDouble tmp;
4437 target_ulong addr;
4438
4439 env->fpuc = lduw(ptr);
4440 fpus = lduw(ptr + 2);
4441 fptag = lduw(ptr + 4);
4442 env->fpstt = (fpus >> 11) & 7;
4443 env->fpus = fpus & ~0x3800;
4444 fptag ^= 0xff;
4445 for(i = 0;i < 8; i++) {
4446 env->fptags[i] = ((fptag >> i) & 1);
4447 }
4448
4449 addr = ptr + 0x20;
4450 for(i = 0;i < 8; i++) {
4451 tmp = helper_fldt(addr);
4452 ST(i) = tmp;
4453 addr += 16;
4454 }
4455
4456 if (env->cr[4] & CR4_OSFXSR_MASK) {
4457 /* XXX: finish it */
4458 env->mxcsr = ldl(ptr + 0x18);
4459 //ldl(ptr + 0x1c);
4460 if (env->hflags & HF_CS64_MASK)
4461 nb_xmm_regs = 16;
4462 else
4463 nb_xmm_regs = 8;
4464 addr = ptr + 0xa0;
4465 /* Fast FXRESTORE leaves out the XMM registers */
4466 if (!(env->efer & MSR_EFER_FFXSR)
4467 || (env->hflags & HF_CPL_MASK)
4468 || !(env->hflags & HF_LMA_MASK)) {
4469 for(i = 0; i < nb_xmm_regs; i++) {
4470 env->xmm_regs[i].XMM_Q(0) = ldq(addr);
4471 env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8);
4472 addr += 16;
4473 }
4474 }
4475 }
4476 }
4477
4478 #ifndef USE_X86LDOUBLE
4479
4480 void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
4481 {
4482 CPU86_LDoubleU temp;
4483 int e;
4484
4485 temp.d = f;
4486 /* mantissa */
4487 *pmant = (MANTD(temp) << 11) | (1LL << 63);
4488 /* exponent + sign */
4489 e = EXPD(temp) - EXPBIAS + 16383;
4490 e |= SIGND(temp) >> 16;
4491 *pexp = e;
4492 }
4493
4494 CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper)
4495 {
4496 CPU86_LDoubleU temp;
4497 int e;
4498 uint64_t ll;
4499
4500 /* XXX: handle overflow ? */
4501 e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
4502 e |= (upper >> 4) & 0x800; /* sign */
4503 ll = (mant >> 11) & ((1LL << 52) - 1);
4504 #ifdef __arm__
4505 temp.l.upper = (e << 20) | (ll >> 32);
4506 temp.l.lower = ll;
4507 #else
4508 temp.ll = ll | ((uint64_t)e << 52);
4509 #endif
4510 return temp.d;
4511 }
4512
4513 #else
4514
4515 void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
4516 {
4517 CPU86_LDoubleU temp;
4518
4519 temp.d = f;
4520 *pmant = temp.l.lower;
4521 *pexp = temp.l.upper;
4522 }
4523
4524 CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper)
4525 {
4526 CPU86_LDoubleU temp;
4527
4528 temp.l.upper = upper;
4529 temp.l.lower = mant;
4530 return temp.d;
4531 }
4532 #endif
4533
4534 #ifdef TARGET_X86_64
4535
4536 //#define DEBUG_MULDIV
4537
4538 static void add128(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b)
4539 {
4540 *plow += a;
4541 /* carry test */
4542 if (*plow < a)
4543 (*phigh)++;
4544 *phigh += b;
4545 }
4546
4547 static void neg128(uint64_t *plow, uint64_t *phigh)
4548 {
4549 *plow = ~ *plow;
4550 *phigh = ~ *phigh;
4551 add128(plow, phigh, 1, 0);
4552 }
4553
4554 /* return TRUE if overflow */
4555 static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b)
4556 {
4557 uint64_t q, r, a1, a0;
4558 int i, qb, ab;
4559
4560 a0 = *plow;
4561 a1 = *phigh;
4562 if (a1 == 0) {
4563 q = a0 / b;
4564 r = a0 % b;
4565 *plow = q;
4566 *phigh = r;
4567 } else {
4568 if (a1 >= b)
4569 return 1;
4570 /* XXX: use a better algorithm */
4571 for(i = 0; i < 64; i++) {
4572 ab = a1 >> 63;
4573 a1 = (a1 << 1) | (a0 >> 63);
4574 if (ab || a1 >= b) {
4575 a1 -= b;
4576 qb = 1;
4577 } else {
4578 qb = 0;
4579 }
4580 a0 = (a0 << 1) | qb;
4581 }
4582 #if defined(DEBUG_MULDIV)
4583 printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n",
4584 *phigh, *plow, b, a0, a1);
4585 #endif
4586 *plow = a0;
4587 *phigh = a1;
4588 }
4589 return 0;
4590 }
4591
4592 /* return TRUE if overflow */
4593 static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b)
4594 {
4595 int sa, sb;
4596 sa = ((int64_t)*phigh < 0);
4597 if (sa)
4598 neg128(plow, phigh);
4599 sb = (b < 0);
4600 if (sb)
4601 b = -b;
4602 if (div64(plow, phigh, b) != 0)
4603 return 1;
4604 if (sa ^ sb) {
4605 if (*plow > (1ULL << 63))
4606 return 1;
4607 *plow = - *plow;
4608 } else {
4609 if (*plow >= (1ULL << 63))
4610 return 1;
4611 }
4612 if (sa)
4613 *phigh = - *phigh;
4614 return 0;
4615 }
4616
4617 void helper_mulq_EAX_T0(target_ulong t0)
4618 {
4619 uint64_t r0, r1;
4620
4621 mulu64(&r0, &r1, EAX, t0);
4622 EAX = r0;
4623 EDX = r1;
4624 CC_DST = r0;
4625 CC_SRC = r1;
4626 }
4627
4628 void helper_imulq_EAX_T0(target_ulong t0)
4629 {
4630 uint64_t r0, r1;
4631
4632 muls64(&r0, &r1, EAX, t0);
4633 EAX = r0;
4634 EDX = r1;
4635 CC_DST = r0;
4636 CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
4637 }
4638
4639 target_ulong helper_imulq_T0_T1(target_ulong t0, target_ulong t1)
4640 {
4641 uint64_t r0, r1;
4642
4643 muls64(&r0, &r1, t0, t1);
4644 CC_DST = r0;
4645 CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
4646 return r0;
4647 }
4648
4649 void helper_divq_EAX(target_ulong t0)
4650 {
4651 uint64_t r0, r1;
4652 if (t0 == 0) {
4653 raise_exception(EXCP00_DIVZ);
4654 }
4655 r0 = EAX;
4656 r1 = EDX;
4657 if (div64(&r0, &r1, t0))
4658 raise_exception(EXCP00_DIVZ);
4659 EAX = r0;
4660 EDX = r1;
4661 }
4662
4663 void helper_idivq_EAX(target_ulong t0)
4664 {
4665 uint64_t r0, r1;
4666 if (t0 == 0) {
4667 raise_exception(EXCP00_DIVZ);
4668 }
4669 r0 = EAX;
4670 r1 = EDX;
4671 if (idiv64(&r0, &r1, t0))
4672 raise_exception(EXCP00_DIVZ);
4673 EAX = r0;
4674 EDX = r1;
4675 }
4676 #endif
4677
4678 static void do_hlt(void)
4679 {
4680 env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
4681 env->halted = 1;
4682 env->exception_index = EXCP_HLT;
4683 cpu_loop_exit();
4684 }
4685
4686 void helper_hlt(int next_eip_addend)
4687 {
4688 helper_svm_check_intercept_param(SVM_EXIT_HLT, 0);
4689 EIP += next_eip_addend;
4690
4691 do_hlt();
4692 }
4693
4694 void helper_monitor(target_ulong ptr)
4695 {
4696 if ((uint32_t)ECX != 0)
4697 raise_exception(EXCP0D_GPF);
4698 /* XXX: store address ? */
4699 helper_svm_check_intercept_param(SVM_EXIT_MONITOR, 0);
4700 }
4701
4702 void helper_mwait(int next_eip_addend)
4703 {
4704 if ((uint32_t)ECX != 0)
4705 raise_exception(EXCP0D_GPF);
4706 helper_svm_check_intercept_param(SVM_EXIT_MWAIT, 0);
4707 EIP += next_eip_addend;
4708
4709 /* XXX: not complete but not completely erroneous */
4710 if (env->cpu_index != 0 || env->next_cpu != NULL) {
4711 /* more than one CPU: do not sleep because another CPU may
4712 wake this one */
4713 } else {
4714 do_hlt();
4715 }
4716 }
4717
4718 void helper_debug(void)
4719 {
4720 env->exception_index = EXCP_DEBUG;
4721 cpu_loop_exit();
4722 }
4723
4724 void helper_reset_rf(void)
4725 {
4726 env->eflags &= ~RF_MASK;
4727 }
4728
4729 void helper_raise_interrupt(int intno, int next_eip_addend)
4730 {
4731 raise_interrupt(intno, 1, 0, next_eip_addend);
4732 }
4733
4734 void helper_raise_exception(int exception_index)
4735 {
4736 raise_exception(exception_index);
4737 }
4738
4739 void helper_cli(void)
4740 {
4741 env->eflags &= ~IF_MASK;
4742 }
4743
4744 void helper_sti(void)
4745 {
4746 env->eflags |= IF_MASK;
4747 }
4748
4749 #if 0
4750 /* vm86plus instructions */
4751 void helper_cli_vm(void)
4752 {
4753 env->eflags &= ~VIF_MASK;
4754 }
4755
4756 void helper_sti_vm(void)
4757 {
4758 env->eflags |= VIF_MASK;
4759 if (env->eflags & VIP_MASK) {
4760 raise_exception(EXCP0D_GPF);
4761 }
4762 }
4763 #endif
4764
4765 void helper_set_inhibit_irq(void)
4766 {
4767 env->hflags |= HF_INHIBIT_IRQ_MASK;
4768 }
4769
4770 void helper_reset_inhibit_irq(void)
4771 {
4772 env->hflags &= ~HF_INHIBIT_IRQ_MASK;
4773 }
4774
4775 void helper_boundw(target_ulong a0, int v)
4776 {
4777 int low, high;
4778 low = ldsw(a0);
4779 high = ldsw(a0 + 2);
4780 v = (int16_t)v;
4781 if (v < low || v > high) {
4782 raise_exception(EXCP05_BOUND);
4783 }
4784 }
4785
4786 void helper_boundl(target_ulong a0, int v)
4787 {
4788 int low, high;
4789 low = ldl(a0);
4790 high = ldl(a0 + 4);
4791 if (v < low || v > high) {
4792 raise_exception(EXCP05_BOUND);
4793 }
4794 }
4795
4796 static float approx_rsqrt(float a)
4797 {
4798 return 1.0 / sqrt(a);
4799 }
4800
4801 static float approx_rcp(float a)
4802 {
4803 return 1.0 / a;
4804 }
4805
4806 #if !defined(CONFIG_USER_ONLY)
4807
4808 #define MMUSUFFIX _mmu
4809
4810 #define SHIFT 0
4811 #include "softmmu_template.h"
4812
4813 #define SHIFT 1
4814 #include "softmmu_template.h"
4815
4816 #define SHIFT 2
4817 #include "softmmu_template.h"
4818
4819 #define SHIFT 3
4820 #include "softmmu_template.h"
4821
4822 #endif
4823
4824 #if !defined(CONFIG_USER_ONLY)
4825 /* try to fill the TLB and return an exception if error. If retaddr is
4826 NULL, it means that the function was called in C code (i.e. not
4827 from generated code or from helper.c) */
4828 /* XXX: fix it to restore all registers */
4829 void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
4830 {
4831 TranslationBlock *tb;
4832 int ret;
4833 unsigned long pc;
4834 CPUX86State *saved_env;
4835
4836 /* XXX: hack to restore env in all cases, even if not called from
4837 generated code */
4838 saved_env = env;
4839 env = cpu_single_env;
4840
4841 ret = cpu_x86_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
4842 if (ret) {
4843 if (retaddr) {
4844 /* now we have a real cpu fault */
4845 pc = (unsigned long)retaddr;
4846 tb = tb_find_pc(pc);
4847 if (tb) {
4848 /* the PC is inside the translated code. It means that we have
4849 a virtual CPU fault */
4850 cpu_restore_state(tb, env, pc, NULL);
4851 }
4852 }
4853 raise_exception_err(env->exception_index, env->error_code);
4854 }
4855 env = saved_env;
4856 }
4857 #endif
4858
4859 /* Secure Virtual Machine helpers */
4860
4861 #if defined(CONFIG_USER_ONLY)
4862
4863 void helper_vmrun(int aflag, int next_eip_addend)
4864 {
4865 }
4866 void helper_vmmcall(void)
4867 {
4868 }
4869 void helper_vmload(int aflag)
4870 {
4871 }
4872 void helper_vmsave(int aflag)
4873 {
4874 }
4875 void helper_stgi(void)
4876 {
4877 }
4878 void helper_clgi(void)
4879 {
4880 }
4881 void helper_skinit(void)
4882 {
4883 }
4884 void helper_invlpga(int aflag)
4885 {
4886 }
4887 void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
4888 {
4889 }
4890 void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
4891 {
4892 }
4893
4894 void helper_svm_check_io(uint32_t port, uint32_t param,
4895 uint32_t next_eip_addend)
4896 {
4897 }
4898 #else
4899
4900 static inline void svm_save_seg(target_phys_addr_t addr,
4901 const SegmentCache *sc)
4902 {
4903 stw_phys(addr + offsetof(struct vmcb_seg, selector),
4904 sc->selector);
4905 stq_phys(addr + offsetof(struct vmcb_seg, base),
4906 sc->base);
4907 stl_phys(addr + offsetof(struct vmcb_seg, limit),
4908 sc->limit);
4909 stw_phys(addr + offsetof(struct vmcb_seg, attrib),
4910 ((sc->flags >> 8) & 0xff) | ((sc->flags >> 12) & 0x0f00));
4911 }
4912
4913 static inline void svm_load_seg(target_phys_addr_t addr, SegmentCache *sc)
4914 {
4915 unsigned int flags;
4916
4917 sc->selector = lduw_phys(addr + offsetof(struct vmcb_seg, selector));
4918 sc->base = ldq_phys(addr + offsetof(struct vmcb_seg, base));
4919 sc->limit = ldl_phys(addr + offsetof(struct vmcb_seg, limit));
4920 flags = lduw_phys(addr + offsetof(struct vmcb_seg, attrib));
4921 sc->flags = ((flags & 0xff) << 8) | ((flags & 0x0f00) << 12);
4922 }
4923
4924 static inline void svm_load_seg_cache(target_phys_addr_t addr,
4925 CPUState *env, int seg_reg)
4926 {
4927 SegmentCache sc1, *sc = &sc1;
4928 svm_load_seg(addr, sc);
4929 cpu_x86_load_seg_cache(env, seg_reg, sc->selector,
4930 sc->base, sc->limit, sc->flags);
4931 }
4932
4933 void helper_vmrun(int aflag, int next_eip_addend)
4934 {
4935 target_ulong addr;
4936 uint32_t event_inj;
4937 uint32_t int_ctl;
4938
4939 helper_svm_check_intercept_param(SVM_EXIT_VMRUN, 0);
4940
4941 if (aflag == 2)
4942 addr = EAX;
4943 else
4944 addr = (uint32_t)EAX;
4945
4946 qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmrun! " TARGET_FMT_lx "\n", addr);
4947
4948 env->vm_vmcb = addr;
4949
4950 /* save the current CPU state in the hsave page */
4951 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
4952 stl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
4953
4954 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base), env->idt.base);
4955 stl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
4956
4957 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0), env->cr[0]);
4958 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]);
4959 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]);
4960 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]);
4961 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]);
4962 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]);
4963
4964 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer), env->efer);
4965 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags), compute_eflags());
4966
4967 svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.es),
4968 &env->segs[R_ES]);
4969 svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.cs),
4970 &env->segs[R_CS]);
4971 svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ss),
4972 &env->segs[R_SS]);
4973 svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ds),
4974 &env->segs[R_DS]);
4975
4976 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip),
4977 EIP + next_eip_addend);
4978 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
4979 stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
4980
4981 /* load the interception bitmaps so we do not need to access the
4982 vmcb in svm mode */
4983 env->intercept = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept));
4984 env->intercept_cr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_read));
4985 env->intercept_cr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_write));
4986 env->intercept_dr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_read));
4987 env->intercept_dr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_write));
4988 env->intercept_exceptions = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_exceptions));
4989
4990 /* enable intercepts */
4991 env->hflags |= HF_SVMI_MASK;
4992
4993 env->tsc_offset = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.tsc_offset));
4994
4995 env->gdt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base));
4996 env->gdt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit));
4997
4998 env->idt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base));
4999 env->idt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit));
5000
5001 /* clear exit_info_2 so we behave like the real hardware */
5002 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), 0);
5003
5004 cpu_x86_update_cr0(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0)));
5005 cpu_x86_update_cr4(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4)));
5006 cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
5007 env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2));
5008 int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
5009 env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK);
5010 if (int_ctl & V_INTR_MASKING_MASK) {
5011 env->v_tpr = int_ctl & V_TPR_MASK;
5012 env->hflags2 |= HF2_VINTR_MASK;
5013 if (env->eflags & IF_MASK)
5014 env->hflags2 |= HF2_HIF_MASK;
5015 }
5016
5017 cpu_load_efer(env,
5018 ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer)));
5019 env->eflags = 0;
5020 load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
5021 ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
5022 CC_OP = CC_OP_EFLAGS;
5023
5024 svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.es),
5025 env, R_ES);
5026 svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.cs),
5027 env, R_CS);
5028 svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ss),
5029 env, R_SS);
5030 svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ds),
5031 env, R_DS);
5032
5033 EIP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip));
5034 env->eip = EIP;
5035 ESP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp));
5036 EAX = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax));
5037 env->dr[7] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7));
5038 env->dr[6] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6));
5039 cpu_x86_set_cpl(env, ldub_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl)));
5040
5041 /* FIXME: guest state consistency checks */
5042
5043 switch(ldub_phys(env->vm_vmcb + offsetof(struct vmcb, control.tlb_ctl))) {
5044 case TLB_CONTROL_DO_NOTHING:
5045 break;
5046 case TLB_CONTROL_FLUSH_ALL_ASID:
5047 /* FIXME: this is not 100% correct but should work for now */
5048 tlb_flush(env, 1);
5049 break;
5050 }
5051
5052 env->hflags2 |= HF2_GIF_MASK;
5053
5054 if (int_ctl & V_IRQ_MASK) {
5055 env->interrupt_request |= CPU_INTERRUPT_VIRQ;
5056 }
5057
5058 /* maybe we need to inject an event */
5059 event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
5060 if (event_inj & SVM_EVTINJ_VALID) {
5061 uint8_t vector = event_inj & SVM_EVTINJ_VEC_MASK;
5062 uint16_t valid_err = event_inj & SVM_EVTINJ_VALID_ERR;
5063 uint32_t event_inj_err = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err));
5064
5065 qemu_log_mask(CPU_LOG_TB_IN_ASM, "Injecting(%#hx): ", valid_err);
5066 /* FIXME: need to implement valid_err */
5067 switch (event_inj & SVM_EVTINJ_TYPE_MASK) {
5068 case SVM_EVTINJ_TYPE_INTR:
5069 env->exception_index = vector;
5070 env->error_code = event_inj_err;
5071 env->exception_is_int = 0;
5072 env->exception_next_eip = -1;
5073 qemu_log_mask(CPU_LOG_TB_IN_ASM, "INTR");
5074 /* XXX: is it always correct ? */
5075 do_interrupt(vector, 0, 0, 0, 1);
5076 break;
5077 case SVM_EVTINJ_TYPE_NMI:
5078 env->exception_index = EXCP02_NMI;
5079 env->error_code = event_inj_err;
5080 env->exception_is_int = 0;
5081 env->exception_next_eip = EIP;
5082 qemu_log_mask(CPU_LOG_TB_IN_ASM, "NMI");
5083 cpu_loop_exit();
5084 break;
5085 case SVM_EVTINJ_TYPE_EXEPT:
5086 env->exception_index = vector;
5087 env->error_code = event_inj_err;
5088 env->exception_is_int = 0;
5089 env->exception_next_eip = -1;
5090 qemu_log_mask(CPU_LOG_TB_IN_ASM, "EXEPT");
5091 cpu_loop_exit();
5092 break;
5093 case SVM_EVTINJ_TYPE_SOFT:
5094 env->exception_index = vector;
5095 env->error_code = event_inj_err;
5096 env->exception_is_int = 1;
5097 env->exception_next_eip = EIP;
5098 qemu_log_mask(CPU_LOG_TB_IN_ASM, "SOFT");
5099 cpu_loop_exit();
5100 break;
5101 }
5102 qemu_log_mask(CPU_LOG_TB_IN_ASM, " %#x %#x\n", env->exception_index, env->error_code);
5103 }
5104 }
5105
5106 void helper_vmmcall(void)
5107 {
5108 helper_svm_check_intercept_param(SVM_EXIT_VMMCALL, 0);
5109 raise_exception(EXCP06_ILLOP);
5110 }
5111
5112 void helper_vmload(int aflag)
5113 {
5114 target_ulong addr;
5115 helper_svm_check_intercept_param(SVM_EXIT_VMLOAD, 0);
5116
5117 if (aflag == 2)
5118 addr = EAX;
5119 else
5120 addr = (uint32_t)EAX;
5121
5122 qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmload! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n",
5123 addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
5124 env->segs[R_FS].base);
5125
5126 svm_load_seg_cache(addr + offsetof(struct vmcb, save.fs),
5127 env, R_FS);
5128 svm_load_seg_cache(addr + offsetof(struct vmcb, save.gs),
5129 env, R_GS);
5130 svm_load_seg(addr + offsetof(struct vmcb, save.tr),
5131 &env->tr);
5132 svm_load_seg(addr + offsetof(struct vmcb, save.ldtr),
5133 &env->ldt);
5134
5135 #ifdef TARGET_X86_64
5136 env->kernelgsbase = ldq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base));
5137 env->lstar = ldq_phys(addr + offsetof(struct vmcb, save.lstar));
5138 env->cstar = ldq_phys(addr + offsetof(struct vmcb, save.cstar));
5139 env->fmask = ldq_phys(addr + offsetof(struct vmcb, save.sfmask));
5140 #endif
5141 env->star = ldq_phys(addr + offsetof(struct vmcb, save.star));
5142 env->sysenter_cs = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_cs));
5143 env->sysenter_esp = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_esp));
5144 env->sysenter_eip = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_eip));
5145 }
5146
5147 void helper_vmsave(int aflag)
5148 {
5149 target_ulong addr;
5150 helper_svm_check_intercept_param(SVM_EXIT_VMSAVE, 0);
5151
5152 if (aflag == 2)
5153 addr = EAX;
5154 else
5155 addr = (uint32_t)EAX;
5156
5157 qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmsave! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n",
5158 addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
5159 env->segs[R_FS].base);
5160
5161 svm_save_seg(addr + offsetof(struct vmcb, save.fs),
5162 &env->segs[R_FS]);
5163 svm_save_seg(addr + offsetof(struct vmcb, save.gs),
5164 &env->segs[R_GS]);
5165 svm_save_seg(addr + offsetof(struct vmcb, save.tr),
5166 &env->tr);
5167 svm_save_seg(addr + offsetof(struct vmcb, save.ldtr),
5168 &env->ldt);
5169
5170 #ifdef TARGET_X86_64
5171 stq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base), env->kernelgsbase);
5172 stq_phys(addr + offsetof(struct vmcb, save.lstar), env->lstar);
5173 stq_phys(addr + offsetof(struct vmcb, save.cstar), env->cstar);
5174 stq_phys(addr + offsetof(struct vmcb, save.sfmask), env->fmask);
5175 #endif
5176 stq_phys(addr + offsetof(struct vmcb, save.star), env->star);
5177 stq_phys(addr + offsetof(struct vmcb, save.sysenter_cs), env->sysenter_cs);
5178 stq_phys(addr + offsetof(struct vmcb, save.sysenter_esp), env->sysenter_esp);
5179 stq_phys(addr + offsetof(struct vmcb, save.sysenter_eip), env->sysenter_eip);
5180 }
5181
5182 void helper_stgi(void)
5183 {
5184 helper_svm_check_intercept_param(SVM_EXIT_STGI, 0);
5185 env->hflags2 |= HF2_GIF_MASK;
5186 }
5187
5188 void helper_clgi(void)
5189 {
5190 helper_svm_check_intercept_param(SVM_EXIT_CLGI, 0);
5191 env->hflags2 &= ~HF2_GIF_MASK;
5192 }
5193
5194 void helper_skinit(void)
5195 {
5196 helper_svm_check_intercept_param(SVM_EXIT_SKINIT, 0);
5197 /* XXX: not implemented */
5198 raise_exception(EXCP06_ILLOP);
5199 }
5200
5201 void helper_invlpga(int aflag)
5202 {
5203 target_ulong addr;
5204 helper_svm_check_intercept_param(SVM_EXIT_INVLPGA, 0);
5205
5206 if (aflag == 2)
5207 addr = EAX;
5208 else
5209 addr = (uint32_t)EAX;
5210
5211 /* XXX: could use the ASID to see if it is needed to do the
5212 flush */
5213 tlb_flush_page(env, addr);
5214 }
5215
5216 void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
5217 {
5218 if (likely(!(env->hflags & HF_SVMI_MASK)))
5219 return;
5220 switch(type) {
5221 case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR0 + 8:
5222 if (env->intercept_cr_read & (1 << (type - SVM_EXIT_READ_CR0))) {
5223 helper_vmexit(type, param);
5224 }
5225 break;
5226 case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR0 + 8:
5227 if (env->intercept_cr_write & (1 << (type - SVM_EXIT_WRITE_CR0))) {
5228 helper_vmexit(type, param);
5229 }
5230 break;
5231 case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR0 + 7:
5232 if (env->intercept_dr_read & (1 << (type - SVM_EXIT_READ_DR0))) {
5233 helper_vmexit(type, param);
5234 }
5235 break;
5236 case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR0 + 7:
5237 if (env->intercept_dr_write & (1 << (type - SVM_EXIT_WRITE_DR0))) {
5238 helper_vmexit(type, param);
5239 }
5240 break;
5241 case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 31:
5242 if (env->intercept_exceptions & (1 << (type - SVM_EXIT_EXCP_BASE))) {
5243 helper_vmexit(type, param);
5244 }
5245 break;
5246 case SVM_EXIT_MSR:
5247 if (env->intercept & (1ULL << (SVM_EXIT_MSR - SVM_EXIT_INTR))) {
5248 /* FIXME: this should be read in at vmrun (faster this way?) */
5249 uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.msrpm_base_pa));
5250 uint32_t t0, t1;
5251 switch((uint32_t)ECX) {
5252 case 0 ... 0x1fff:
5253 t0 = (ECX * 2) % 8;
5254 t1 = ECX / 8;
5255 break;
5256 case 0xc0000000 ... 0xc0001fff:
5257 t0 = (8192 + ECX - 0xc0000000) * 2;
5258 t1 = (t0 / 8);
5259 t0 %= 8;
5260 break;
5261 case 0xc0010000 ... 0xc0011fff:
5262 t0 = (16384 + ECX - 0xc0010000) * 2;
5263 t1 = (t0 / 8);
5264 t0 %= 8;
5265 break;
5266 default:
5267 helper_vmexit(type, param);
5268 t0 = 0;
5269 t1 = 0;
5270 break;
5271 }
5272 if (ldub_phys(addr + t1) & ((1 << param) << t0))
5273 helper_vmexit(type, param);
5274 }
5275 break;
5276 default:
5277 if (env->intercept & (1ULL << (type - SVM_EXIT_INTR))) {
5278 helper_vmexit(type, param);
5279 }
5280 break;
5281 }
5282 }
5283
5284 void helper_svm_check_io(uint32_t port, uint32_t param,
5285 uint32_t next_eip_addend)
5286 {
5287 if (env->intercept & (1ULL << (SVM_EXIT_IOIO - SVM_EXIT_INTR))) {
5288 /* FIXME: this should be read in at vmrun (faster this way?) */
5289 uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.iopm_base_pa));
5290 uint16_t mask = (1 << ((param >> 4) & 7)) - 1;
5291 if(lduw_phys(addr + port / 8) & (mask << (port & 7))) {
5292 /* next EIP */
5293 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
5294 env->eip + next_eip_addend);
5295 helper_vmexit(SVM_EXIT_IOIO, param | (port << 16));
5296 }
5297 }
5298 }
5299
5300 /* Note: currently only 32 bits of exit_code are used */
5301 void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
5302 {
5303 uint32_t int_ctl;
5304
5305 qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmexit(%08x, %016" PRIx64 ", %016" PRIx64 ", " TARGET_FMT_lx ")!\n",
5306 exit_code, exit_info_1,
5307 ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2)),
5308 EIP);
5309
5310 if(env->hflags & HF_INHIBIT_IRQ_MASK) {
5311 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), SVM_INTERRUPT_SHADOW_MASK);
5312 env->hflags &= ~HF_INHIBIT_IRQ_MASK;
5313 } else {
5314 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), 0);
5315 }
5316
5317 /* Save the VM state in the vmcb */
5318 svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.es),
5319 &env->segs[R_ES]);
5320 svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.cs),
5321 &env->segs[R_CS]);
5322 svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.ss),
5323 &env->segs[R_SS]);
5324 svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.ds),
5325 &env->segs[R_DS]);
5326
5327 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
5328 stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
5329
5330 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base), env->idt.base);
5331 stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
5332
5333 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer), env->efer);
5334 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0), env->cr[0]);
5335 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2), env->cr[2]);
5336 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3), env->cr[3]);
5337 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4), env->cr[4]);
5338
5339 int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
5340 int_ctl &= ~(V_TPR_MASK | V_IRQ_MASK);
5341 int_ctl |= env->v_tpr & V_TPR_MASK;
5342 if (env->interrupt_request & CPU_INTERRUPT_VIRQ)
5343 int_ctl |= V_IRQ_MASK;
5344 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
5345
5346 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags), compute_eflags());
5347 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip), env->eip);
5348 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp), ESP);
5349 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax), EAX);
5350 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7), env->dr[7]);
5351 stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6), env->dr[6]);
5352 stb_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl), env->hflags & HF_CPL_MASK);
5353
5354 /* Reload the host state from vm_hsave */
5355 env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK);
5356 env->hflags &= ~HF_SVMI_MASK;
5357 env->intercept = 0;
5358 env->intercept_exceptions = 0;
5359 env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
5360 env->tsc_offset = 0;
5361
5362 env->gdt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base));
5363 env->gdt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit));
5364
5365 env->idt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base));
5366 env->idt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit));
5367
5368 cpu_x86_update_cr0(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0)) | CR0_PE_MASK);
5369 cpu_x86_update_cr4(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4)));
5370 cpu_x86_update_cr3(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3)));
5371 /* we need to set the efer after the crs so the hidden flags get
5372 set properly */
5373 cpu_load_efer(env,
5374 ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer)));
5375 env->eflags = 0;
5376 load_eflags(ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags)),
5377 ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
5378 CC_OP = CC_OP_EFLAGS;
5379
5380 svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.es),
5381 env, R_ES);
5382 svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.cs),
5383 env, R_CS);
5384 svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.ss),
5385 env, R_SS);
5386 svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.ds),
5387 env, R_DS);
5388
5389 EIP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip));
5390 ESP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp));
5391 EAX = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax));
5392
5393 env->dr[6] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6));
5394 env->dr[7] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7));
5395
5396 /* other setups */
5397 cpu_x86_set_cpl(env, 0);
5398 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_code), exit_code);
5399 stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_1), exit_info_1);
5400
5401 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_int_info),
5402 ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj)));
5403 stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_int_info_err),
5404 ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err)));
5405
5406 env->hflags2 &= ~HF2_GIF_MASK;
5407 /* FIXME: Resets the current ASID register to zero (host ASID). */
5408
5409 /* Clears the V_IRQ and V_INTR_MASKING bits inside the processor. */
5410
5411 /* Clears the TSC_OFFSET inside the processor. */
5412
5413 /* If the host is in PAE mode, the processor reloads the host's PDPEs
5414 from the page table indicated the host's CR3. If the PDPEs contain
5415 illegal state, the processor causes a shutdown. */
5416
5417 /* Forces CR0.PE = 1, RFLAGS.VM = 0. */
5418 env->cr[0] |= CR0_PE_MASK;
5419 env->eflags &= ~VM_MASK;
5420
5421 /* Disables all breakpoints in the host DR7 register. */
5422
5423 /* Checks the reloaded host state for consistency. */
5424
5425 /* If the host's rIP reloaded by #VMEXIT is outside the limit of the
5426 host's code segment or non-canonical (in the case of long mode), a
5427 #GP fault is delivered inside the host.) */
5428
5429 /* remove any pending exception */
5430 env->exception_index = -1;
5431 env->error_code = 0;
5432 env->old_exception = -1;
5433
5434 cpu_loop_exit();
5435 }
5436
5437 #endif
5438
5439 /* MMX/SSE */
5440 /* XXX: optimize by storing fptt and fptags in the static cpu state */
5441 void helper_enter_mmx(void)
5442 {
5443 env->fpstt = 0;
5444 *(uint32_t *)(env->fptags) = 0;
5445 *(uint32_t *)(env->fptags + 4) = 0;
5446 }
5447
5448 void helper_emms(void)
5449 {
5450 /* set to empty state */
5451 *(uint32_t *)(env->fptags) = 0x01010101;
5452 *(uint32_t *)(env->fptags + 4) = 0x01010101;
5453 }
5454
5455 /* XXX: suppress */
5456 void helper_movq(void *d, void *s)
5457 {
5458 *(uint64_t *)d = *(uint64_t *)s;
5459 }
5460
5461 #define SHIFT 0
5462 #include "ops_sse.h"
5463
5464 #define SHIFT 1
5465 #include "ops_sse.h"
5466
5467 #define SHIFT 0
5468 #include "helper_template.h"
5469 #undef SHIFT
5470
5471 #define SHIFT 1
5472 #include "helper_template.h"
5473 #undef SHIFT
5474
5475 #define SHIFT 2
5476 #include "helper_template.h"
5477 #undef SHIFT
5478
5479 #ifdef TARGET_X86_64
5480
5481 #define SHIFT 3
5482 #include "helper_template.h"
5483 #undef SHIFT
5484
5485 #endif
5486
5487 /* bit operations */
5488 target_ulong helper_bsf(target_ulong t0)
5489 {
5490 int count;
5491 target_ulong res;
5492
5493 res = t0;
5494 count = 0;
5495 while ((res & 1) == 0) {
5496 count++;
5497 res >>= 1;
5498 }
5499 return count;
5500 }
5501
5502 target_ulong helper_bsr(target_ulong t0)
5503 {
5504 int count;
5505 target_ulong res, mask;
5506
5507 res = t0;
5508 count = TARGET_LONG_BITS - 1;
5509 mask = (target_ulong)1 << (TARGET_LONG_BITS - 1);
5510 while ((res & mask) == 0) {
5511 count--;
5512 res <<= 1;
5513 }
5514 return count;
5515 }
5516
5517
5518 static int compute_all_eflags(void)
5519 {
5520 return CC_SRC;
5521 }
5522
5523 static int compute_c_eflags(void)
5524 {
5525 return CC_SRC & CC_C;
5526 }
5527
5528 uint32_t helper_cc_compute_all(int op)
5529 {
5530 switch (op) {
5531 default: /* should never happen */ return 0;
5532
5533 case CC_OP_EFLAGS: return compute_all_eflags();
5534
5535 case CC_OP_MULB: return compute_all_mulb();
5536 case CC_OP_MULW: return compute_all_mulw();
5537 case CC_OP_MULL: return compute_all_mull();
5538
5539 case CC_OP_ADDB: return compute_all_addb();
5540 case CC_OP_ADDW: return compute_all_addw();
5541 case CC_OP_ADDL: return compute_all_addl();
5542
5543 case CC_OP_ADCB: return compute_all_adcb();
5544 case CC_OP_ADCW: return compute_all_adcw();
5545 case CC_OP_ADCL: return compute_all_adcl();
5546
5547 case CC_OP_SUBB: return compute_all_subb();
5548 case CC_OP_SUBW: return compute_all_subw();
5549 case CC_OP_SUBL: return compute_all_subl();
5550
5551 case CC_OP_SBBB: return compute_all_sbbb();
5552 case CC_OP_SBBW: return compute_all_sbbw();
5553 case CC_OP_SBBL: return compute_all_sbbl();
5554
5555 case CC_OP_LOGICB: return compute_all_logicb();
5556 case CC_OP_LOGICW: return compute_all_logicw();
5557 case CC_OP_LOGICL: return compute_all_logicl();
5558
5559 case CC_OP_INCB: return compute_all_incb();
5560 case CC_OP_INCW: return compute_all_incw();
5561 case CC_OP_INCL: return compute_all_incl();
5562
5563 case CC_OP_DECB: return compute_all_decb();
5564 case CC_OP_DECW: return compute_all_decw();
5565 case CC_OP_DECL: return compute_all_decl();
5566
5567 case CC_OP_SHLB: return compute_all_shlb();
5568 case CC_OP_SHLW: return compute_all_shlw();
5569 case CC_OP_SHLL: return compute_all_shll();
5570
5571 case CC_OP_SARB: return compute_all_sarb();
5572 case CC_OP_SARW: return compute_all_sarw();
5573 case CC_OP_SARL: return compute_all_sarl();
5574
5575 #ifdef TARGET_X86_64
5576 case CC_OP_MULQ: return compute_all_mulq();
5577
5578 case CC_OP_ADDQ: return compute_all_addq();
5579
5580 case CC_OP_ADCQ: return compute_all_adcq();
5581
5582 case CC_OP_SUBQ: return compute_all_subq();
5583
5584 case CC_OP_SBBQ: return compute_all_sbbq();
5585
5586 case CC_OP_LOGICQ: return compute_all_logicq();
5587
5588 case CC_OP_INCQ: return compute_all_incq();
5589
5590 case CC_OP_DECQ: return compute_all_decq();
5591
5592 case CC_OP_SHLQ: return compute_all_shlq();
5593
5594 case CC_OP_SARQ: return compute_all_sarq();
5595 #endif
5596 }
5597 }
5598
5599 uint32_t helper_cc_compute_c(int op)
5600 {
5601 switch (op) {
5602 default: /* should never happen */ return 0;
5603
5604 case CC_OP_EFLAGS: return compute_c_eflags();
5605
5606 case CC_OP_MULB: return compute_c_mull();
5607 case CC_OP_MULW: return compute_c_mull();
5608 case CC_OP_MULL: return compute_c_mull();
5609
5610 case CC_OP_ADDB: return compute_c_addb();
5611 case CC_OP_ADDW: return compute_c_addw();
5612 case CC_OP_ADDL: return compute_c_addl();
5613
5614 case CC_OP_ADCB: return compute_c_adcb();
5615 case CC_OP_ADCW: return compute_c_adcw();
5616 case CC_OP_ADCL: return compute_c_adcl();
5617
5618 case CC_OP_SUBB: return compute_c_subb();
5619 case CC_OP_SUBW: return compute_c_subw();
5620 case CC_OP_SUBL: return compute_c_subl();
5621
5622 case CC_OP_SBBB: return compute_c_sbbb();
5623 case CC_OP_SBBW: return compute_c_sbbw();
5624 case CC_OP_SBBL: return compute_c_sbbl();
5625
5626 case CC_OP_LOGICB: return compute_c_logicb();
5627 case CC_OP_LOGICW: return compute_c_logicw();
5628 case CC_OP_LOGICL: return compute_c_logicl();
5629
5630 case CC_OP_INCB: return compute_c_incl();
5631 case CC_OP_INCW: return compute_c_incl();
5632 case CC_OP_INCL: return compute_c_incl();
5633
5634 case CC_OP_DECB: return compute_c_incl();
5635 case CC_OP_DECW: return compute_c_incl();
5636 case CC_OP_DECL: return compute_c_incl();
5637
5638 case CC_OP_SHLB: return compute_c_shlb();
5639 case CC_OP_SHLW: return compute_c_shlw();
5640 case CC_OP_SHLL: return compute_c_shll();
5641
5642 case CC_OP_SARB: return compute_c_sarl();
5643 case CC_OP_SARW: return compute_c_sarl();
5644 case CC_OP_SARL: return compute_c_sarl();
5645
5646 #ifdef TARGET_X86_64
5647 case CC_OP_MULQ: return compute_c_mull();
5648
5649 case CC_OP_ADDQ: return compute_c_addq();
5650
5651 case CC_OP_ADCQ: return compute_c_adcq();
5652
5653 case CC_OP_SUBQ: return compute_c_subq();
5654
5655 case CC_OP_SBBQ: return compute_c_sbbq();
5656
5657 case CC_OP_LOGICQ: return compute_c_logicq();
5658
5659 case CC_OP_INCQ: return compute_c_incl();
5660
5661 case CC_OP_DECQ: return compute_c_incl();
5662
5663 case CC_OP_SHLQ: return compute_c_shlq();
5664
5665 case CC_OP_SARQ: return compute_c_sarl();
5666 #endif
5667 }
5668 }
Patches shipped by Fedora