op_helper.c@ 78278

Last change on this file since 78278 was 76397, checked in by vboxsync, 6 years ago
VBox/vmm/hm_svm.h,hm_vmx.h: Try avoid including VBox/err.h in widely used headers, so split out the inline stuff from hm_vmx.h into hmvmxinline.h. bugref:9344
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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
20	/*
21	* Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
22	* other than GPL or LGPL is available it will apply instead, Oracle elects to use only
23	* the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
24	* a choice of LGPL license versions is made available with the language indicating
25	* that LGPLv2 or any later version may be used, or where a choice of which version
26	* of the LGPL is applied is otherwise unspecified.
27	*/
28
29	#include "exec.h"
30	#include "exec-all.h"
31	#include "host-utils.h"
32	#include "ioport.h"
33
34	#ifdef VBOX
35	# include "qemu-common.h"
36	# include <math.h>
37	# include "tcg.h"
38	# include <VBox/err.h>
39	#endif /* VBOX */
40
41	//#define DEBUG_PCALL
42
43
44	#ifdef DEBUG_PCALL
45	# define LOG_PCALL(...) qemu_log_mask(CPU_LOG_PCALL, ## __VA_ARGS__)
46	# define LOG_PCALL_STATE(env) \
47	log_cpu_state_mask(CPU_LOG_PCALL, (env), X86_DUMP_CCOP)
48	#else
49	# define LOG_PCALL(...) do { } while (0)
50	# define LOG_PCALL_STATE(env) do { } while (0)
51	#endif
52
53
54	#if 0
55	#define raise_exception_err(a, b)\
56	do {\
57	qemu_log("raise_exception line=%d\n", __LINE__);\
58	(raise_exception_err)(a, b);\
59	} while (0)
60	#endif
61
62	static const uint8_t parity_table[256] = {
63	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
64	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
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	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
69	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
70	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
71	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
72	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
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	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
77	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
78	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
79	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
80	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
81	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
82	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
83	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
84	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
85	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
86	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
87	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
88	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
89	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
90	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
91	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
92	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
93	CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0,
94	0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P,
95	};
96
97	/* modulo 17 table */
98	static const uint8_t rclw_table[32] = {
99	0, 1, 2, 3, 4, 5, 6, 7,
100	8, 9,10,11,12,13,14,15,
101	16, 0, 1, 2, 3, 4, 5, 6,
102	7, 8, 9,10,11,12,13,14,
103	};
104
105	/* modulo 9 table */
106	static const uint8_t rclb_table[32] = {
107	0, 1, 2, 3, 4, 5, 6, 7,
108	8, 0, 1, 2, 3, 4, 5, 6,
109	7, 8, 0, 1, 2, 3, 4, 5,
110	6, 7, 8, 0, 1, 2, 3, 4,
111	};
112
113	static const CPU86_LDouble f15rk[7] =
114	{
115	0.00000000000000000000L,
116	1.00000000000000000000L,
117	3.14159265358979323851L, /pi/
118	0.30102999566398119523L, /lg2/
119	0.69314718055994530943L, /ln2/
120	1.44269504088896340739L, /l2e/
121	3.32192809488736234781L, /l2t/
122	};
123
124	/* broken thread support */
125
126	static spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
127
128	void helper_lock(void)
129	{
130	spin_lock(&global_cpu_lock);
131	}
132
133	void helper_unlock(void)
134	{
135	spin_unlock(&global_cpu_lock);
136	}
137
138	void helper_write_eflags(target_ulong t0, uint32_t update_mask)
139	{
140	load_eflags(t0, update_mask);
141	}
142
143	target_ulong helper_read_eflags(void)
144	{
145	uint32_t eflags;
146	eflags = helper_cc_compute_all(CC_OP);
147	eflags \|= (DF & DF_MASK);
148	eflags \|= env->eflags & ~(VM_MASK \| RF_MASK);
149	return eflags;
150	}
151
152	#ifdef VBOX
153
154	void helper_write_eflags_vme(target_ulong t0)
155	{
156	unsigned int new_eflags = t0;
157
158	assert(env->eflags & (1<<VM_SHIFT));
159
160	/* if virtual interrupt pending and (virtual) interrupts will be enabled -> #GP */
161	/* if TF will be set -> #GP */
162	if ( ((new_eflags & IF_MASK) && (env->eflags & VIP_MASK))
163	\|\| (new_eflags & TF_MASK)) {
164	raise_exception(EXCP0D_GPF);
165	} else {
166	load_eflags(new_eflags,
167	(TF_MASK \| AC_MASK \| ID_MASK \| NT_MASK) & 0xffff);
168
169	if (new_eflags & IF_MASK) {
170	env->eflags \|= VIF_MASK;
171	} else {
172	env->eflags &= ~VIF_MASK;
173	}
174	}
175	}
176
177	target_ulong helper_read_eflags_vme(void)
178	{
179	uint32_t eflags;
180	eflags = helper_cc_compute_all(CC_OP);
181	eflags \|= (DF & DF_MASK);
182	eflags \|= env->eflags & ~(VM_MASK \| RF_MASK);
183	if (env->eflags & VIF_MASK)
184	eflags \|= IF_MASK;
185	else
186	eflags &= ~IF_MASK;
187
188	/* According to AMD manual, should be read with IOPL == 3 */
189	eflags \|= (3 << IOPL_SHIFT);
190
191	/* We only use helper_read_eflags_vme() in 16-bits mode */
192	return eflags & 0xffff;
193	}
194
195	void helper_dump_state()
196	{
197	LogRel(("CS:EIP=%08x:%08x, FLAGS=%08x\n", env->segs[R_CS].base, env->eip, env->eflags));
198	LogRel(("EAX=%08x\tECX=%08x\tEDX=%08x\tEBX=%08x\n",
199	(uint32_t)env->regs[R_EAX], (uint32_t)env->regs[R_ECX],
200	(uint32_t)env->regs[R_EDX], (uint32_t)env->regs[R_EBX]));
201	LogRel(("ESP=%08x\tEBP=%08x\tESI=%08x\tEDI=%08x\n",
202	(uint32_t)env->regs[R_ESP], (uint32_t)env->regs[R_EBP],
203	(uint32_t)env->regs[R_ESI], (uint32_t)env->regs[R_EDI]));
204	}
205
206	/**
207	* Updates e2 with the DESC_A_MASK, writes it to the descriptor table, and
208	* returns the updated e2.
209	*
210	* @returns e2 with A set.
211	* @param e2 The 2nd selector DWORD.
212	*/
213	static uint32_t set_segment_accessed(int selector, uint32_t e2)
214	{
215	SegmentCache *dt = selector & X86_SEL_LDT ? &env->ldt : &env->gdt;
216	target_ulong ptr = dt->base + (selector & X86_SEL_MASK);
217
218	e2 \|= DESC_A_MASK;
219	stl_kernel(ptr + 4, e2);
220	return e2;
221	}
222
223	#endif /* VBOX */
224
225	/* return non zero if error */
226	static inline int load_segment(uint32_t e1_ptr, uint32_t e2_ptr,
227	int selector)
228	{
229	SegmentCache *dt;
230	int index;
231	target_ulong ptr;
232
233	if (selector & 0x4)
234	dt = &env->ldt;
235	else
236	dt = &env->gdt;
237	index = selector & ~7;
238	if ((index + 7) > dt->limit)
239	return -1;
240	ptr = dt->base + index;
241	*e1_ptr = ldl_kernel(ptr);
242	*e2_ptr = ldl_kernel(ptr + 4);
243	return 0;
244	}
245
246	static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2)
247	{
248	unsigned int limit;
249	limit = (e1 & 0xffff) \| (e2 & 0x000f0000);
250	if (e2 & DESC_G_MASK)
251	limit = (limit << 12) \| 0xfff;
252	return limit;
253	}
254
255	static inline uint32_t get_seg_base(uint32_t e1, uint32_t e2)
256	{
257	return ((e1 >> 16) \| ((e2 & 0xff) << 16) \| (e2 & 0xff000000));
258	}
259
260	static inline void load_seg_cache_raw_dt(SegmentCache *sc, uint32_t e1, uint32_t e2)
261	{
262	sc->base = get_seg_base(e1, e2);
263	sc->limit = get_seg_limit(e1, e2);
264	#ifndef VBOX
265	sc->flags = e2;
266	#else
267	sc->flags = e2 & DESC_RAW_FLAG_BITS;
268	sc->newselector = 0;
269	sc->fVBoxFlags = CPUMSELREG_FLAGS_VALID;
270	#endif
271	}
272
273	/* init the segment cache in vm86 mode. */
274	static inline void load_seg_vm(int seg, int selector)
275	{
276	selector &= 0xffff;
277	#ifdef VBOX
278	/* flags must be 0xf3; expand-up read/write accessed data segment with DPL=3. (VT-x) */
279	unsigned flags = DESC_P_MASK \| DESC_S_MASK \| DESC_W_MASK \| DESC_A_MASK;
280	flags \|= (3 << DESC_DPL_SHIFT);
281
282	cpu_x86_load_seg_cache(env, seg, selector,
283	(selector << 4), 0xffff, flags);
284	#else /* VBOX */
285	cpu_x86_load_seg_cache(env, seg, selector,
286	(selector << 4), 0xffff, 0);
287	#endif /* VBOX */
288	}
289
290	static inline void get_ss_esp_from_tss(uint32_t *ss_ptr,
291	uint32_t *esp_ptr, int dpl)
292	{
293	#ifndef VBOX
294	int type, index, shift;
295	#else
296	unsigned int type, index, shift;
297	#endif
298
299	#if 0
300	{
301	int i;
302	printf("TR: base=%p limit=%x\n", env->tr.base, env->tr.limit);
303	for(i=0;i<env->tr.limit;i++) {
304	printf("%02x ", env->tr.base[i]);
305	if ((i & 7) == 7) printf("\n");
306	}
307	printf("\n");
308	}
309	#endif
310
311	if (!(env->tr.flags & DESC_P_MASK))
312	cpu_abort(env, "invalid tss");
313	type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
314	if ((type & 7) != 3)
315	cpu_abort(env, "invalid tss type");
316	shift = type >> 3;
317	index = (dpl * 4 + 2) << shift;
318	if (index + (4 << shift) - 1 > env->tr.limit)
319	raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
320	if (shift == 0) {
321	*esp_ptr = lduw_kernel(env->tr.base + index);
322	*ss_ptr = lduw_kernel(env->tr.base + index + 2);
323	} else {
324	*esp_ptr = ldl_kernel(env->tr.base + index);
325	*ss_ptr = lduw_kernel(env->tr.base + index + 4);
326	}
327	}
328
329	/* XXX: merge with load_seg() */
330	static void tss_load_seg(int seg_reg, int selector)
331	{
332	uint32_t e1, e2;
333	int rpl, dpl, cpl;
334
335	#ifdef VBOX
336	e1 = e2 = 0; /* gcc warning? */
337	cpl = env->hflags & HF_CPL_MASK;
338	/* Trying to load a selector with CPL=1? */
339	if (cpl == 0 && (selector & 3) == 1 && (env->state & CPU_RAW_RING0))
340	{
341	Log(("RPL 1 -> sel %04X -> %04X (tss_load_seg)\n", selector, selector & 0xfffc));
342	selector = selector & 0xfffc;
343	}
344	#endif /* VBOX */
345
346	if ((selector & 0xfffc) != 0) {
347	if (load_segment(&e1, &e2, selector) != 0)
348	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
349	if (!(e2 & DESC_S_MASK))
350	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
351	rpl = selector & 3;
352	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
353	cpl = env->hflags & HF_CPL_MASK;
354	if (seg_reg == R_CS) {
355	if (!(e2 & DESC_CS_MASK))
356	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
357	/* XXX: is it correct ? */
358	if (dpl != rpl)
359	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
360	if ((e2 & DESC_C_MASK) && dpl > rpl)
361	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
362	} else if (seg_reg == R_SS) {
363	/* SS must be writable data */
364	if ((e2 & DESC_CS_MASK) \|\| !(e2 & DESC_W_MASK))
365	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
366	if (dpl != cpl \|\| dpl != rpl)
367	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
368	} else {
369	/* not readable code */
370	if ((e2 & DESC_CS_MASK) && !(e2 & DESC_R_MASK))
371	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
372	/* if data or non conforming code, checks the rights */
373	if (((e2 >> DESC_TYPE_SHIFT) & 0xf) < 12) {
374	if (dpl < cpl \|\| dpl < rpl)
375	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
376	}
377	}
378	if (!(e2 & DESC_P_MASK))
379	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
380	cpu_x86_load_seg_cache(env, seg_reg, selector,
381	get_seg_base(e1, e2),
382	get_seg_limit(e1, e2),
383	e2);
384	} else {
385	if (seg_reg == R_SS \|\| seg_reg == R_CS)
386	raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
387	#ifdef VBOX
388	# if 0 /** @todo now we ignore loading 0 selectors, need to check what is correct once */
389	cpu_x86_load_seg_cache(env, seg_reg, selector,
390	0, 0, 0);
391	# endif
392	#endif /* VBOX */
393	}
394	}
395
396	#define SWITCH_TSS_JMP 0
397	#define SWITCH_TSS_IRET 1
398	#define SWITCH_TSS_CALL 2
399
400	/* XXX: restore CPU state in registers (PowerPC case) */
401	static void switch_tss(int tss_selector,
402	uint32_t e1, uint32_t e2, int source,
403	uint32_t next_eip)
404	{
405	int tss_limit, tss_limit_max, type, old_tss_limit_max, old_type, v1, v2, i;
406	target_ulong tss_base;
407	uint32_t new_regs[8], new_segs[6];
408	uint32_t new_eflags, new_eip, new_cr3, new_ldt, new_trap;
409	uint32_t old_eflags, eflags_mask;
410	SegmentCache *dt;
411	#ifndef VBOX
412	int index;
413	#else
414	unsigned int index;
415	#endif
416	target_ulong ptr;
417
418	type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
419	LOG_PCALL("switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector, type, source);
420
421	/* if task gate, we read the TSS segment and we load it */
422	if (type == 5) {
423	if (!(e2 & DESC_P_MASK))
424	raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
425	tss_selector = e1 >> 16;
426	if (tss_selector & 4)
427	raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
428	if (load_segment(&e1, &e2, tss_selector) != 0)
429	raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
430	if (e2 & DESC_S_MASK)
431	raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
432	type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
433	if ((type & 7) != 1)
434	raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
435	}
436
437	if (!(e2 & DESC_P_MASK))
438	raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
439
440	if (type & 8)
441	tss_limit_max = 103;
442	else
443	tss_limit_max = 43;
444	tss_limit = get_seg_limit(e1, e2);
445	tss_base = get_seg_base(e1, e2);
446	if ((tss_selector & 4) != 0 \|\|
447	tss_limit < tss_limit_max)
448	raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
449	old_type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
450	if (old_type & 8)
451	old_tss_limit_max = 103;
452	else
453	old_tss_limit_max = 43;
454
455	#ifndef VBOX /* The old TSS is written first... */
456	/* read all the registers from the new TSS */
457	if (type & 8) {
458	/* 32 bit */
459	new_cr3 = ldl_kernel(tss_base + 0x1c);
460	new_eip = ldl_kernel(tss_base + 0x20);
461	new_eflags = ldl_kernel(tss_base + 0x24);
462	for(i = 0; i < 8; i++)
463	new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4));
464	for(i = 0; i < 6; i++)
465	new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4));
466	new_ldt = lduw_kernel(tss_base + 0x60);
467	new_trap = ldl_kernel(tss_base + 0x64);
468	} else {
469	/* 16 bit */
470	new_cr3 = 0;
471	new_eip = lduw_kernel(tss_base + 0x0e);
472	new_eflags = lduw_kernel(tss_base + 0x10);
473	for(i = 0; i < 8; i++)
474	new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) \| 0xffff0000;
475	for(i = 0; i < 4; i++)
476	new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4));
477	new_ldt = lduw_kernel(tss_base + 0x2a);
478	new_segs[R_FS] = 0;
479	new_segs[R_GS] = 0;
480	new_trap = 0;
481	}
482	#endif
483
484	/* NOTE: we must avoid memory exceptions during the task switch,
485	so we make dummy accesses before */
486	/* XXX: it can still fail in some cases, so a bigger hack is
487	necessary to valid the TLB after having done the accesses */
488
489	v1 = ldub_kernel(env->tr.base);
490	v2 = ldub_kernel(env->tr.base + old_tss_limit_max);
491	stb_kernel(env->tr.base, v1);
492	stb_kernel(env->tr.base + old_tss_limit_max, v2);
493
494	/* clear busy bit (it is restartable) */
495	if (source == SWITCH_TSS_JMP \|\| source == SWITCH_TSS_IRET) {
496	target_ulong ptr;
497	uint32_t e2;
498	ptr = env->gdt.base + (env->tr.selector & ~7);
499	e2 = ldl_kernel(ptr + 4);
500	e2 &= ~DESC_TSS_BUSY_MASK;
501	stl_kernel(ptr + 4, e2);
502	}
503	old_eflags = compute_eflags();
504	if (source == SWITCH_TSS_IRET)
505	old_eflags &= ~NT_MASK;
506
507	/* save the current state in the old TSS */
508	if (type & 8) {
509	/* 32 bit */
510	stl_kernel(env->tr.base + 0x20, next_eip);
511	stl_kernel(env->tr.base + 0x24, old_eflags);
512	stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX);
513	stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX);
514	stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX);
515	stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX);
516	stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP);
517	stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP);
518	stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI);
519	stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI);
520	for(i = 0; i < 6; i++)
521	stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector);
522	#if defined(VBOX) && defined(DEBUG)
523	printf("TSS 32 bits switch\n");
524	printf("Saving CS=%08X\n", env->segs[R_CS].selector);
525	#endif
526	} else {
527	/* 16 bit */
528	stw_kernel(env->tr.base + 0x0e, next_eip);
529	stw_kernel(env->tr.base + 0x10, old_eflags);
530	stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX);
531	stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX);
532	stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX);
533	stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX);
534	stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP);
535	stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP);
536	stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI);
537	stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI);
538	for(i = 0; i < 4; i++)
539	stw_kernel(env->tr.base + (0x22 + i * 2), env->segs[i].selector);
540	}
541
542	#ifdef VBOX
543	/* read all the registers from the new TSS - may be the same as the old one */
544	if (type & 8) {
545	/* 32 bit */
546	new_cr3 = ldl_kernel(tss_base + 0x1c);
547	new_eip = ldl_kernel(tss_base + 0x20);
548	new_eflags = ldl_kernel(tss_base + 0x24);
549	for(i = 0; i < 8; i++)
550	new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4));
551	for(i = 0; i < 6; i++)
552	new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4));
553	new_ldt = lduw_kernel(tss_base + 0x60);
554	new_trap = ldl_kernel(tss_base + 0x64);
555	} else {
556	/* 16 bit */
557	new_cr3 = 0;
558	new_eip = lduw_kernel(tss_base + 0x0e);
559	new_eflags = lduw_kernel(tss_base + 0x10);
560	for(i = 0; i < 8; i++)
561	new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) \| 0xffff0000;
562	for(i = 0; i < 4; i++)
563	new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 2));
564	new_ldt = lduw_kernel(tss_base + 0x2a);
565	new_segs[R_FS] = 0;
566	new_segs[R_GS] = 0;
567	new_trap = 0;
568	}
569	#endif
570
571	/* now if an exception occurs, it will occurs in the next task
572	context */
573
574	if (source == SWITCH_TSS_CALL) {
575	stw_kernel(tss_base, env->tr.selector);
576	new_eflags \|= NT_MASK;
577	}
578
579	/* set busy bit */
580	if (source == SWITCH_TSS_JMP \|\| source == SWITCH_TSS_CALL) {
581	target_ulong ptr;
582	uint32_t e2;
583	ptr = env->gdt.base + (tss_selector & ~7);
584	e2 = ldl_kernel(ptr + 4);
585	e2 \|= DESC_TSS_BUSY_MASK;
586	stl_kernel(ptr + 4, e2);
587	}
588
589	/* set the new CPU state */
590	/* from this point, any exception which occurs can give problems */
591	env->cr[0] \|= CR0_TS_MASK;
592	env->hflags \|= HF_TS_MASK;
593	env->tr.selector = tss_selector;
594	env->tr.base = tss_base;
595	env->tr.limit = tss_limit;
596	#ifndef VBOX
597	env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK;
598	#else
599	env->tr.flags = (e2 \| DESC_TSS_BUSY_MASK) & DESC_RAW_FLAG_BITS;
600	env->tr.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
601	env->tr.newselector = 0;
602	#endif
603
604	if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) {
605	cpu_x86_update_cr3(env, new_cr3);
606	}
607
608	/* load all registers without an exception, then reload them with
609	possible exception */
610	env->eip = new_eip;
611	eflags_mask = TF_MASK \| AC_MASK \| ID_MASK \|
612	IF_MASK \| IOPL_MASK \| VM_MASK \| RF_MASK \| NT_MASK;
613	if (!(type & 8))
614	eflags_mask &= 0xffff;
615	load_eflags(new_eflags, eflags_mask);
616	/* XXX: what to do in 16 bit case ? */
617	EAX = new_regs[0];
618	ECX = new_regs[1];
619	EDX = new_regs[2];
620	EBX = new_regs[3];
621	ESP = new_regs[4];
622	EBP = new_regs[5];
623	ESI = new_regs[6];
624	EDI = new_regs[7];
625	if (new_eflags & VM_MASK) {
626	for(i = 0; i < 6; i++)
627	load_seg_vm(i, new_segs[i]);
628	/* in vm86, CPL is always 3 */
629	cpu_x86_set_cpl(env, 3);
630	} else {
631	/* CPL is set the RPL of CS */
632	cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
633	/* first just selectors as the rest may trigger exceptions */
634	for(i = 0; i < 6; i++)
635	cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0);
636	}
637
638	env->ldt.selector = new_ldt & ~4;
639	env->ldt.base = 0;
640	env->ldt.limit = 0;
641	env->ldt.flags = 0;
642	#ifdef VBOX
643	env->ldt.flags = DESC_INTEL_UNUSABLE;
644	env->ldt.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
645	env->ldt.newselector = 0;
646	#endif
647
648	/* load the LDT */
649	if (new_ldt & 4)
650	raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
651
652	if ((new_ldt & 0xfffc) != 0) {
653	dt = &env->gdt;
654	index = new_ldt & ~7;
655	if ((index + 7) > dt->limit)
656	raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
657	ptr = dt->base + index;
658	e1 = ldl_kernel(ptr);
659	e2 = ldl_kernel(ptr + 4);
660	if ((e2 & DESC_S_MASK) \|\| ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2)
661	raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
662	if (!(e2 & DESC_P_MASK))
663	raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
664	load_seg_cache_raw_dt(&env->ldt, e1, e2);
665	}
666
667	/* load the segments */
668	if (!(new_eflags & VM_MASK)) {
669	tss_load_seg(R_CS, new_segs[R_CS]);
670	tss_load_seg(R_SS, new_segs[R_SS]);
671	tss_load_seg(R_ES, new_segs[R_ES]);
672	tss_load_seg(R_DS, new_segs[R_DS]);
673	tss_load_seg(R_FS, new_segs[R_FS]);
674	tss_load_seg(R_GS, new_segs[R_GS]);
675	}
676
677	/* check that EIP is in the CS segment limits */
678	if (new_eip > env->segs[R_CS].limit) {
679	/* XXX: different exception if CALL ? */
680	raise_exception_err(EXCP0D_GPF, 0);
681	}
682
683	#ifndef CONFIG_USER_ONLY
684	/* reset local breakpoints */
685	if (env->dr[7] & 0x55) {
686	for (i = 0; i < 4; i++) {
687	if (hw_breakpoint_enabled(env->dr[7], i) == 0x1)
688	hw_breakpoint_remove(env, i);
689	}
690	env->dr[7] &= ~0x55;
691	}
692	#endif
693	}
694
695	/* check if Port I/O is allowed in TSS */
696	static inline void check_io(int addr, int size)
697	{
698	#ifndef VBOX
699	int io_offset, val, mask;
700	#else
701	int val, mask;
702	unsigned int io_offset;
703	#endif /* VBOX */
704
705	/* TSS must be a valid 32 bit one */
706	if (!(env->tr.flags & DESC_P_MASK) \|\|
707	((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 11 \|\|
708	env->tr.limit < 103)
709	goto fail;
710	io_offset = lduw_kernel(env->tr.base + 0x66);
711	io_offset += (addr >> 3);
712	/* Note: the check needs two bytes */
713	if ((io_offset + 1) > env->tr.limit)
714	goto fail;
715	val = lduw_kernel(env->tr.base + io_offset);
716	val >>= (addr & 7);
717	mask = (1 << size) - 1;
718	/* all bits must be zero to allow the I/O */
719	if ((val & mask) != 0) {
720	fail:
721	raise_exception_err(EXCP0D_GPF, 0);
722	}
723	}
724
725	#ifdef VBOX
726
727	/* Keep in sync with gen_check_external_event() */
728	void helper_check_external_event()
729	{
730	if ( (env->interrupt_request & ( CPU_INTERRUPT_EXTERNAL_FLUSH_TLB
731	\| CPU_INTERRUPT_EXTERNAL_EXIT
732	\| CPU_INTERRUPT_EXTERNAL_TIMER
733	\| CPU_INTERRUPT_EXTERNAL_DMA))
734	\|\| ( (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_HARD)
735	&& (env->eflags & IF_MASK)
736	&& !(env->hflags & HF_INHIBIT_IRQ_MASK) ) )
737	{
738	helper_external_event();
739	}
740
741	}
742
743	void helper_sync_seg(uint32_t reg)
744	{
745	if (env->segs[reg].newselector)
746	sync_seg(env, reg, env->segs[reg].newselector);
747	}
748
749	#endif /* VBOX */
750
751	void helper_check_iob(uint32_t t0)
752	{
753	check_io(t0, 1);
754	}
755
756	void helper_check_iow(uint32_t t0)
757	{
758	check_io(t0, 2);
759	}
760
761	void helper_check_iol(uint32_t t0)
762	{
763	check_io(t0, 4);
764	}
765
766	void helper_outb(uint32_t port, uint32_t data)
767	{
768	#ifndef VBOX
769	cpu_outb(port, data & 0xff);
770	#else
771	cpu_outb(env, port, data & 0xff);
772	#endif
773	}
774
775	target_ulong helper_inb(uint32_t port)
776	{
777	#ifndef VBOX
778	return cpu_inb(port);
779	#else
780	return cpu_inb(env, port);
781	#endif
782	}
783
784	void helper_outw(uint32_t port, uint32_t data)
785	{
786	#ifndef VBOX
787	cpu_outw(port, data & 0xffff);
788	#else
789	cpu_outw(env, port, data & 0xffff);
790	#endif
791	}
792
793	target_ulong helper_inw(uint32_t port)
794	{
795	#ifndef VBOX
796	return cpu_inw(port);
797	#else
798	return cpu_inw(env, port);
799	#endif
800	}
801
802	void helper_outl(uint32_t port, uint32_t data)
803	{
804	#ifndef VBOX
805	cpu_outl(port, data);
806	#else
807	cpu_outl(env, port, data);
808	#endif
809	}
810
811	target_ulong helper_inl(uint32_t port)
812	{
813	#ifndef VBOX
814	return cpu_inl(port);
815	#else
816	return cpu_inl(env, port);
817	#endif
818	}
819
820	static inline unsigned int get_sp_mask(unsigned int e2)
821	{
822	if (e2 & DESC_B_MASK)
823	return 0xffffffff;
824	else
825	return 0xffff;
826	}
827
828	static int exeption_has_error_code(int intno)
829	{
830	switch(intno) {
831	case 8:
832	case 10:
833	case 11:
834	case 12:
835	case 13:
836	case 14:
837	case 17:
838	return 1;
839	}
840	return 0;
841	}
842
843	#ifdef TARGET_X86_64
844	#define SET_ESP(val, sp_mask)\
845	do {\
846	if ((sp_mask) == 0xffff)\
847	ESP = (ESP & ~0xffff) \| ((val) & 0xffff);\
848	else if ((sp_mask) == 0xffffffffLL)\
849	ESP = (uint32_t)(val);\
850	else\
851	ESP = (val);\
852	} while (0)
853	#else
854	#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) \| ((val) & (sp_mask))
855	#endif
856
857	/* in 64-bit machines, this can overflow. So this segment addition macro
858	* can be used to trim the value to 32-bit whenever needed */
859	#define SEG_ADDL(ssp, sp, sp_mask) ((uint32_t)((ssp) + (sp & (sp_mask))))
860
861	/* XXX: add a is_user flag to have proper security support */
862	#define PUSHW(ssp, sp, sp_mask, val)\
863	{\
864	sp -= 2;\
865	stw_kernel((ssp) + (sp & (sp_mask)), (val));\
866	}
867
868	#define PUSHL(ssp, sp, sp_mask, val)\
869	{\
870	sp -= 4;\
871	stl_kernel(SEG_ADDL(ssp, sp, sp_mask), (uint32_t)(val));\
872	}
873
874	#define POPW(ssp, sp, sp_mask, val)\
875	{\
876	val = lduw_kernel((ssp) + (sp & (sp_mask)));\
877	sp += 2;\
878	}
879
880	#define POPL(ssp, sp, sp_mask, val)\
881	{\
882	val = (uint32_t)ldl_kernel(SEG_ADDL(ssp, sp, sp_mask));\
883	sp += 4;\
884	}
885
886	/* protected mode interrupt */
887	static void do_interrupt_protected(int intno, int is_int, int error_code,
888	unsigned int next_eip, int is_hw)
889	{
890	SegmentCache *dt;
891	target_ulong ptr, ssp;
892	int type, dpl, selector, ss_dpl, cpl;
893	int has_error_code, new_stack, shift;
894	uint32_t e1, e2, offset, ss = 0, esp, ss_e1 = 0, ss_e2 = 0;
895	uint32_t old_eip, sp_mask;
896
897	#ifdef VBOX
898	if (remR3NotifyTrap(env, intno, error_code, next_eip) != VINF_SUCCESS)
899	cpu_loop_exit();
900	#endif
901
902	has_error_code = 0;
903	if (!is_int && !is_hw)
904	has_error_code = exeption_has_error_code(intno);
905	if (is_int)
906	old_eip = next_eip;
907	else
908	old_eip = env->eip;
909
910	dt = &env->idt;
911	#ifndef VBOX
912	if (intno * 8 + 7 > dt->limit)
913	#else
914	if ((unsigned)intno * 8 + 7 > dt->limit)
915	#endif
916	raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
917	ptr = dt->base + intno * 8;
918	e1 = ldl_kernel(ptr);
919	e2 = ldl_kernel(ptr + 4);
920	/* check gate type */
921	type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
922	switch(type) {
923	case 5: /* task gate */
924	#ifdef VBOX
925	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
926	cpl = env->hflags & HF_CPL_MASK;
927	/* check privilege if software int */
928	if (is_int && dpl < cpl)
929	raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
930	#endif
931	/* must do that check here to return the correct error code */
932	if (!(e2 & DESC_P_MASK))
933	raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
934	switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
935	if (has_error_code) {
936	int type;
937	uint32_t mask;
938	/* push the error code */
939	type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
940	shift = type >> 3;
941	if (env->segs[R_SS].flags & DESC_B_MASK)
942	mask = 0xffffffff;
943	else
944	mask = 0xffff;
945	esp = (ESP - (2 << shift)) & mask;
946	ssp = env->segs[R_SS].base + esp;
947	if (shift)
948	stl_kernel(ssp, error_code);
949	else
950	stw_kernel(ssp, error_code);
951	SET_ESP(esp, mask);
952	}
953	return;
954	case 6: /* 286 interrupt gate */
955	case 7: /* 286 trap gate */
956	case 14: /* 386 interrupt gate */
957	case 15: /* 386 trap gate */
958	break;
959	default:
960	raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
961	break;
962	}
963	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
964	cpl = env->hflags & HF_CPL_MASK;
965	/* check privilege if software int */
966	if (is_int && dpl < cpl)
967	raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
968	/* check valid bit */
969	if (!(e2 & DESC_P_MASK))
970	raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2);
971	selector = e1 >> 16;
972	offset = (e2 & 0xffff0000) \| (e1 & 0x0000ffff);
973	if ((selector & 0xfffc) == 0)
974	raise_exception_err(EXCP0D_GPF, 0);
975
976	if (load_segment(&e1, &e2, selector) != 0)
977	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
978	#ifdef VBOX /** @todo figure out when this is done one day... */
979	if (!(e2 & DESC_A_MASK))
980	e2 = set_segment_accessed(selector, e2);
981	#endif
982	if (!(e2 & DESC_S_MASK) \|\| !(e2 & (DESC_CS_MASK)))
983	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
984	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
985	if (dpl > cpl)
986	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
987	if (!(e2 & DESC_P_MASK))
988	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
989	if (!(e2 & DESC_C_MASK) && dpl < cpl) {
990	/* to inner privilege */
991	get_ss_esp_from_tss(&ss, &esp, dpl);
992	if ((ss & 0xfffc) == 0)
993	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
994	if ((ss & 3) != dpl)
995	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
996	if (load_segment(&ss_e1, &ss_e2, ss) != 0)
997	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
998	#ifdef VBOX /** @todo figure out when this is done one day... */
999	if (!(ss_e2 & DESC_A_MASK))
1000	ss_e2 = set_segment_accessed(ss, ss_e2);
1001	#endif
1002	ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
1003	if (ss_dpl != dpl)
1004	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
1005	if (!(ss_e2 & DESC_S_MASK) \|\|
1006	(ss_e2 & DESC_CS_MASK) \|\|
1007	!(ss_e2 & DESC_W_MASK))
1008	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
1009	if (!(ss_e2 & DESC_P_MASK))
1010	#ifdef VBOX /* See page 3-477 of 253666.pdf */
1011	raise_exception_err(EXCP0C_STACK, ss & 0xfffc);
1012	#else
1013	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
1014	#endif
1015	new_stack = 1;
1016	sp_mask = get_sp_mask(ss_e2);
1017	ssp = get_seg_base(ss_e1, ss_e2);
1018	#if defined(VBOX) && defined(DEBUG)
1019	printf("new stack %04X:%08X gate dpl=%d\n", ss, esp, dpl);
1020	#endif
1021	} else if ((e2 & DESC_C_MASK) \|\| dpl == cpl) {
1022	/* to same privilege */
1023	if (env->eflags & VM_MASK)
1024	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1025	new_stack = 0;
1026	sp_mask = get_sp_mask(env->segs[R_SS].flags);
1027	ssp = env->segs[R_SS].base;
1028	esp = ESP;
1029	dpl = cpl;
1030	} else {
1031	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1032	new_stack = 0; /* avoid warning */
1033	sp_mask = 0; /* avoid warning */
1034	ssp = 0; /* avoid warning */
1035	esp = 0; /* avoid warning */
1036	}
1037
1038	shift = type >> 3;
1039
1040	#if 0
1041	/* XXX: check that enough room is available */
1042	push_size = 6 + (new_stack << 2) + (has_error_code << 1);
1043	if (env->eflags & VM_MASK)
1044	push_size += 8;
1045	push_size <<= shift;
1046	#endif
1047	if (shift == 1) {
1048	if (new_stack) {
1049	if (env->eflags & VM_MASK) {
1050	PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector);
1051	PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector);
1052	PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector);
1053	PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector);
1054	}
1055	PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector);
1056	PUSHL(ssp, esp, sp_mask, ESP);
1057	}
1058	PUSHL(ssp, esp, sp_mask, compute_eflags());
1059	PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector);
1060	PUSHL(ssp, esp, sp_mask, old_eip);
1061	if (has_error_code) {
1062	PUSHL(ssp, esp, sp_mask, error_code);
1063	}
1064	} else {
1065	if (new_stack) {
1066	if (env->eflags & VM_MASK) {
1067	PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector);
1068	PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector);
1069	PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector);
1070	PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector);
1071	}
1072	PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector);
1073	PUSHW(ssp, esp, sp_mask, ESP);
1074	}
1075	PUSHW(ssp, esp, sp_mask, compute_eflags());
1076	PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector);
1077	PUSHW(ssp, esp, sp_mask, old_eip);
1078	if (has_error_code) {
1079	PUSHW(ssp, esp, sp_mask, error_code);
1080	}
1081	}
1082
1083	if (new_stack) {
1084	if (env->eflags & VM_MASK) {
1085	cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0);
1086	cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0);
1087	cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0);
1088	cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0);
1089	}
1090	ss = (ss & ~3) \| dpl;
1091	cpu_x86_load_seg_cache(env, R_SS, ss,
1092	ssp, get_seg_limit(ss_e1, ss_e2), ss_e2);
1093	}
1094	SET_ESP(esp, sp_mask);
1095
1096	selector = (selector & ~3) \| dpl;
1097	cpu_x86_load_seg_cache(env, R_CS, selector,
1098	get_seg_base(e1, e2),
1099	get_seg_limit(e1, e2),
1100	e2);
1101	cpu_x86_set_cpl(env, dpl);
1102	env->eip = offset;
1103
1104	/* interrupt gate clear IF mask */
1105	if ((type & 1) == 0) {
1106	env->eflags &= ~IF_MASK;
1107	}
1108	#ifndef VBOX
1109	env->eflags &= ~(TF_MASK \| VM_MASK \| RF_MASK \| NT_MASK);
1110	#else
1111	/*
1112	* We must clear VIP/VIF too on interrupt entry, as otherwise FreeBSD
1113	* gets confused by seemingly changed EFLAGS. See #3491 and
1114	* public bug #2341.
1115	*/
1116	env->eflags &= ~(TF_MASK \| VM_MASK \| RF_MASK \| NT_MASK \| VIF_MASK \| VIP_MASK);
1117	#endif
1118	}
1119
1120	#ifdef VBOX
1121
1122	/* check if VME interrupt redirection is enabled in TSS */
1123	DECLINLINE(bool) is_vme_irq_redirected(int intno)
1124	{
1125	unsigned int io_offset, intredir_offset;
1126	unsigned char val, mask;
1127
1128	/* TSS must be a valid 32 bit one */
1129	if (!(env->tr.flags & DESC_P_MASK) \|\|
1130	((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 11 \|\|
1131	env->tr.limit < 103)
1132	goto fail;
1133	io_offset = lduw_kernel(env->tr.base + 0x66);
1134	/* Make sure the io bitmap offset is valid; anything less than sizeof(VBOXTSS) means there's none. */
1135	if (io_offset < 0x68 + 0x20)
1136	io_offset = 0x68 + 0x20;
1137	/* the virtual interrupt redirection bitmap is located below the io bitmap */
1138	intredir_offset = io_offset - 0x20;
1139
1140	intredir_offset += (intno >> 3);
1141	if ((intredir_offset) > env->tr.limit)
1142	goto fail;
1143
1144	val = ldub_kernel(env->tr.base + intredir_offset);
1145	mask = 1 << (unsigned char)(intno & 7);
1146
1147	/* bit set means no redirection. */
1148	if ((val & mask) != 0) {
1149	return false;
1150	}
1151	return true;
1152
1153	fail:
1154	raise_exception_err(EXCP0D_GPF, 0);
1155	return true;
1156	}
1157
1158	/* V86 mode software interrupt with CR4.VME=1 */
1159	static void do_soft_interrupt_vme(int intno, int error_code, unsigned int next_eip)
1160	{
1161	target_ulong ptr, ssp;
1162	int selector;
1163	uint32_t offset, esp;
1164	uint32_t old_cs, old_eflags;
1165	uint32_t iopl;
1166
1167	iopl = ((env->eflags >> IOPL_SHIFT) & 3);
1168
1169	if (!is_vme_irq_redirected(intno))
1170	{
1171	if (iopl == 3)
1172	{
1173	do_interrupt_protected(intno, 1, error_code, next_eip, 0);
1174	return;
1175	}
1176	else
1177	raise_exception_err(EXCP0D_GPF, 0);
1178	}
1179
1180	/* virtual mode idt is at linear address 0 */
1181	ptr = 0 + intno * 4;
1182	offset = lduw_kernel(ptr);
1183	selector = lduw_kernel(ptr + 2);
1184	esp = ESP;
1185	ssp = env->segs[R_SS].base;
1186	old_cs = env->segs[R_CS].selector;
1187
1188	old_eflags = compute_eflags();
1189	if (iopl < 3)
1190	{
1191	/* copy VIF into IF and set IOPL to 3 */
1192	if (env->eflags & VIF_MASK)
1193	old_eflags \|= IF_MASK;
1194	else
1195	old_eflags &= ~IF_MASK;
1196
1197	old_eflags \|= (3 << IOPL_SHIFT);
1198	}
1199
1200	/* XXX: use SS segment size ? */
1201	PUSHW(ssp, esp, 0xffff, old_eflags);
1202	PUSHW(ssp, esp, 0xffff, old_cs);
1203	PUSHW(ssp, esp, 0xffff, next_eip);
1204
1205	/* update processor state */
1206	ESP = (ESP & ~0xffff) \| (esp & 0xffff);
1207	env->eip = offset;
1208	env->segs[R_CS].selector = selector;
1209	env->segs[R_CS].base = (selector << 4);
1210	env->eflags &= ~(TF_MASK \| RF_MASK);
1211
1212	if (iopl < 3)
1213	env->eflags &= ~VIF_MASK;
1214	else
1215	env->eflags &= ~IF_MASK;
1216	}
1217
1218	#endif /* VBOX */
1219
1220	#ifdef TARGET_X86_64
1221
1222	#define PUSHQ(sp, val)\
1223	{\
1224	sp -= 8;\
1225	stq_kernel(sp, (val));\
1226	}
1227
1228	#define POPQ(sp, val)\
1229	{\
1230	val = ldq_kernel(sp);\
1231	sp += 8;\
1232	}
1233
1234	static inline target_ulong get_rsp_from_tss(int level)
1235	{
1236	int index;
1237
1238	#if 0
1239	printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
1240	env->tr.base, env->tr.limit);
1241	#endif
1242
1243	if (!(env->tr.flags & DESC_P_MASK))
1244	cpu_abort(env, "invalid tss");
1245	index = 8 * level + 4;
1246	if ((index + 7) > env->tr.limit)
1247	raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
1248	return ldq_kernel(env->tr.base + index);
1249	}
1250
1251	/* 64 bit interrupt */
1252	static void do_interrupt64(int intno, int is_int, int error_code,
1253	target_ulong next_eip, int is_hw)
1254	{
1255	SegmentCache *dt;
1256	target_ulong ptr;
1257	int type, dpl, selector, cpl, ist;
1258	int has_error_code, new_stack;
1259	uint32_t e1, e2, e3, ss;
1260	target_ulong old_eip, esp, offset;
1261
1262	#ifdef VBOX
1263	if (remR3NotifyTrap(env, intno, error_code, next_eip) != VINF_SUCCESS)
1264	cpu_loop_exit();
1265	#endif
1266
1267	has_error_code = 0;
1268	if (!is_int && !is_hw)
1269	has_error_code = exeption_has_error_code(intno);
1270	if (is_int)
1271	old_eip = next_eip;
1272	else
1273	old_eip = env->eip;
1274
1275	dt = &env->idt;
1276	if (intno * 16 + 15 > dt->limit)
1277	raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
1278	ptr = dt->base + intno * 16;
1279	e1 = ldl_kernel(ptr);
1280	e2 = ldl_kernel(ptr + 4);
1281	e3 = ldl_kernel(ptr + 8);
1282	/* check gate type */
1283	type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
1284	switch(type) {
1285	case 14: /* 386 interrupt gate */
1286	case 15: /* 386 trap gate */
1287	break;
1288	default:
1289	raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
1290	break;
1291	}
1292	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
1293	cpl = env->hflags & HF_CPL_MASK;
1294	/* check privilege if software int */
1295	if (is_int && dpl < cpl)
1296	raise_exception_err(EXCP0D_GPF, intno * 16 + 2);
1297	/* check valid bit */
1298	if (!(e2 & DESC_P_MASK))
1299	raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2);
1300	selector = e1 >> 16;
1301	offset = ((target_ulong)e3 << 32) \| (e2 & 0xffff0000) \| (e1 & 0x0000ffff);
1302	ist = e2 & 7;
1303	if ((selector & 0xfffc) == 0)
1304	raise_exception_err(EXCP0D_GPF, 0);
1305
1306	if (load_segment(&e1, &e2, selector) != 0)
1307	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1308	if (!(e2 & DESC_S_MASK) \|\| !(e2 & (DESC_CS_MASK)))
1309	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1310	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
1311	if (dpl > cpl)
1312	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1313	if (!(e2 & DESC_P_MASK))
1314	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
1315	if (!(e2 & DESC_L_MASK) \|\| (e2 & DESC_B_MASK))
1316	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1317	if ((!(e2 & DESC_C_MASK) && dpl < cpl) \|\| ist != 0) {
1318	/* to inner privilege */
1319	if (ist != 0)
1320	esp = get_rsp_from_tss(ist + 3);
1321	else
1322	esp = get_rsp_from_tss(dpl);
1323	esp &= ~0xfLL; /* align stack */
1324	ss = 0;
1325	new_stack = 1;
1326	} else if ((e2 & DESC_C_MASK) \|\| dpl == cpl) {
1327	/* to same privilege */
1328	if (env->eflags & VM_MASK)
1329	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1330	new_stack = 0;
1331	if (ist != 0)
1332	esp = get_rsp_from_tss(ist + 3);
1333	else
1334	esp = ESP;
1335	esp &= ~0xfLL; /* align stack */
1336	dpl = cpl;
1337	} else {
1338	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
1339	new_stack = 0; /* avoid warning */
1340	esp = 0; /* avoid warning */
1341	}
1342
1343	PUSHQ(esp, env->segs[R_SS].selector);
1344	PUSHQ(esp, ESP);
1345	PUSHQ(esp, compute_eflags());
1346	PUSHQ(esp, env->segs[R_CS].selector);
1347	PUSHQ(esp, old_eip);
1348	if (has_error_code) {
1349	PUSHQ(esp, error_code);
1350	}
1351
1352	if (new_stack) {
1353	ss = 0 \| dpl;
1354	#ifndef VBOX
1355	cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0);
1356	#else
1357	cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, dpl << DESC_DPL_SHIFT);
1358	#endif
1359	}
1360	ESP = esp;
1361
1362	selector = (selector & ~3) \| dpl;
1363	cpu_x86_load_seg_cache(env, R_CS, selector,
1364	get_seg_base(e1, e2),
1365	get_seg_limit(e1, e2),
1366	e2);
1367	cpu_x86_set_cpl(env, dpl);
1368	env->eip = offset;
1369
1370	/* interrupt gate clear IF mask */
1371	if ((type & 1) == 0) {
1372	env->eflags &= ~IF_MASK;
1373	}
1374	#ifndef VBOX
1375	env->eflags &= ~(TF_MASK \| VM_MASK \| RF_MASK \| NT_MASK);
1376	#else /* VBOX */
1377	/*
1378	* We must clear VIP/VIF too on interrupt entry, as otherwise FreeBSD
1379	* gets confused by seemingly changed EFLAGS. See #3491 and
1380	* public bug #2341.
1381	*/
1382	env->eflags &= ~(TF_MASK \| VM_MASK \| RF_MASK \| NT_MASK \| VIF_MASK \| VIP_MASK);
1383	#endif /* VBOX */
1384	}
1385	#endif
1386
1387	#ifdef TARGET_X86_64
1388	#if defined(CONFIG_USER_ONLY)
1389	void helper_syscall(int next_eip_addend)
1390	{
1391	env->exception_index = EXCP_SYSCALL;
1392	env->exception_next_eip = env->eip + next_eip_addend;
1393	cpu_loop_exit();
1394	}
1395	#else
1396	void helper_syscall(int next_eip_addend)
1397	{
1398	int selector;
1399
1400	if (!(env->efer & MSR_EFER_SCE)) {
1401	raise_exception_err(EXCP06_ILLOP, 0);
1402	}
1403	selector = (env->star >> 32) & 0xffff;
1404	if (env->hflags & HF_LMA_MASK) {
1405	int code64;
1406
1407	ECX = env->eip + next_eip_addend;
1408	env->regs[11] = compute_eflags();
1409
1410	code64 = env->hflags & HF_CS64_MASK;
1411
1412	cpu_x86_set_cpl(env, 0);
1413	cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
1414	0, 0xffffffff,
1415	DESC_G_MASK \| DESC_P_MASK \|
1416	DESC_S_MASK \|
1417	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK \| DESC_L_MASK);
1418	cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
1419	0, 0xffffffff,
1420	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1421	DESC_S_MASK \|
1422	DESC_W_MASK \| DESC_A_MASK);
1423	env->eflags &= ~env->fmask;
1424	load_eflags(env->eflags, 0);
1425	if (code64)
1426	env->eip = env->lstar;
1427	else
1428	env->eip = env->cstar;
1429	} else {
1430	ECX = (uint32_t)(env->eip + next_eip_addend);
1431
1432	cpu_x86_set_cpl(env, 0);
1433	cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
1434	0, 0xffffffff,
1435	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1436	DESC_S_MASK \|
1437	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK);
1438	cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc,
1439	0, 0xffffffff,
1440	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1441	DESC_S_MASK \|
1442	DESC_W_MASK \| DESC_A_MASK);
1443	env->eflags &= ~(IF_MASK \| RF_MASK \| VM_MASK);
1444	env->eip = (uint32_t)env->star;
1445	}
1446	}
1447	#endif
1448	#endif
1449
1450	#ifdef TARGET_X86_64
1451	void helper_sysret(int dflag)
1452	{
1453	int cpl, selector;
1454
1455	if (!(env->efer & MSR_EFER_SCE)) {
1456	raise_exception_err(EXCP06_ILLOP, 0);
1457	}
1458	cpl = env->hflags & HF_CPL_MASK;
1459	if (!(env->cr[0] & CR0_PE_MASK) \|\| cpl != 0) {
1460	raise_exception_err(EXCP0D_GPF, 0);
1461	}
1462	selector = (env->star >> 48) & 0xffff;
1463	if (env->hflags & HF_LMA_MASK) {
1464	if (dflag == 2) {
1465	cpu_x86_load_seg_cache(env, R_CS, (selector + 16) \| 3,
1466	0, 0xffffffff,
1467	DESC_G_MASK \| DESC_P_MASK \|
1468	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
1469	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK \|
1470	DESC_L_MASK);
1471	env->eip = ECX;
1472	} else {
1473	cpu_x86_load_seg_cache(env, R_CS, selector \| 3,
1474	0, 0xffffffff,
1475	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1476	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
1477	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK);
1478	env->eip = (uint32_t)ECX;
1479	}
1480	cpu_x86_load_seg_cache(env, R_SS, selector + 8,
1481	0, 0xffffffff,
1482	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1483	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
1484	DESC_W_MASK \| DESC_A_MASK);
1485	load_eflags((uint32_t)(env->regs[11]), TF_MASK \| AC_MASK \| ID_MASK \|
1486	IF_MASK \| IOPL_MASK \| VM_MASK \| RF_MASK \| NT_MASK);
1487	cpu_x86_set_cpl(env, 3);
1488	} else {
1489	cpu_x86_load_seg_cache(env, R_CS, selector \| 3,
1490	0, 0xffffffff,
1491	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1492	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
1493	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK);
1494	env->eip = (uint32_t)ECX;
1495	cpu_x86_load_seg_cache(env, R_SS, selector + 8,
1496	0, 0xffffffff,
1497	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
1498	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
1499	DESC_W_MASK \| DESC_A_MASK);
1500	env->eflags \|= IF_MASK;
1501	cpu_x86_set_cpl(env, 3);
1502	}
1503	}
1504	#endif
1505
1506	#ifdef VBOX
1507
1508	/**
1509	* Checks and processes external VMM events.
1510	* Called by op_check_external_event() when any of the flags is set and can be serviced.
1511	*/
1512	void helper_external_event(void)
1513	{
1514	# if defined(RT_OS_DARWIN) && defined(VBOX_STRICT)
1515	uintptr_t uSP;
1516	# ifdef RT_ARCH_AMD64
1517	__asm__ __volatile__("movq %%rsp, %0" : "=r" (uSP));
1518	# else
1519	__asm__ __volatile__("movl %%esp, %0" : "=r" (uSP));
1520	# endif
1521	AssertMsg(!(uSP & 15), ("xSP=%#p\n", uSP));
1522	# endif
1523	/* Keep in sync with flags checked by gen_check_external_event() */
1524	if (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_HARD)
1525	{
1526	ASMAtomicAndS32((int32_t volatile *)&env->interrupt_request,
1527	~CPU_INTERRUPT_EXTERNAL_HARD);
1528	cpu_interrupt(env, CPU_INTERRUPT_HARD);
1529	}
1530	if (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_EXIT)
1531	{
1532	ASMAtomicAndS32((int32_t volatile *)&env->interrupt_request,
1533	~CPU_INTERRUPT_EXTERNAL_EXIT);
1534	cpu_exit(env);
1535	}
1536	if (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_DMA)
1537	{
1538	ASMAtomicAndS32((int32_t volatile *)&env->interrupt_request,
1539	~CPU_INTERRUPT_EXTERNAL_DMA);
1540	remR3DmaRun(env);
1541	}
1542	if (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_TIMER)
1543	{
1544	ASMAtomicAndS32((int32_t volatile *)&env->interrupt_request,
1545	~CPU_INTERRUPT_EXTERNAL_TIMER);
1546	remR3TimersRun(env);
1547	}
1548	if (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_FLUSH_TLB)
1549	{
1550	ASMAtomicAndS32((int32_t volatile *)&env->interrupt_request,
1551	~CPU_INTERRUPT_EXTERNAL_HARD);
1552	cpu_interrupt(env, CPU_INTERRUPT_HARD);
1553	}
1554	}
1555
1556	/* helper for recording call instruction addresses for later scanning */
1557	void helper_record_call()
1558	{
1559	if ( !(env->state & CPU_RAW_RING0)
1560	&& (env->cr[0] & CR0_PG_MASK)
1561	&& !(env->eflags & X86_EFL_IF))
1562	remR3RecordCall(env);
1563	}
1564
1565	#endif /* VBOX */
1566
1567	/* real mode interrupt */
1568	static void do_interrupt_real(int intno, int is_int, int error_code,
1569	unsigned int next_eip)
1570	{
1571	SegmentCache *dt;
1572	target_ulong ptr, ssp;
1573	int selector;
1574	uint32_t offset, esp;
1575	uint32_t old_cs, old_eip;
1576
1577	/* real mode (simpler !) */
1578	dt = &env->idt;
1579	#ifndef VBOX
1580	if (intno * 4 + 3 > dt->limit)
1581	#else
1582	if ((unsigned)intno * 4 + 3 > dt->limit)
1583	#endif
1584	raise_exception_err(EXCP0D_GPF, intno * 8 + 2);
1585	ptr = dt->base + intno * 4;
1586	offset = lduw_kernel(ptr);
1587	selector = lduw_kernel(ptr + 2);
1588	esp = ESP;
1589	ssp = env->segs[R_SS].base;
1590	if (is_int)
1591	old_eip = next_eip;
1592	else
1593	old_eip = env->eip;
1594	old_cs = env->segs[R_CS].selector;
1595	/* XXX: use SS segment size ? */
1596	PUSHW(ssp, esp, 0xffff, compute_eflags());
1597	PUSHW(ssp, esp, 0xffff, old_cs);
1598	PUSHW(ssp, esp, 0xffff, old_eip);
1599
1600	/* update processor state */
1601	ESP = (ESP & ~0xffff) \| (esp & 0xffff);
1602	env->eip = offset;
1603	env->segs[R_CS].selector = selector;
1604	env->segs[R_CS].base = (selector << 4);
1605	env->eflags &= ~(IF_MASK \| TF_MASK \| AC_MASK \| RF_MASK);
1606	}
1607
1608	/* fake user mode interrupt */
1609	void do_interrupt_user(int intno, int is_int, int error_code,
1610	target_ulong next_eip)
1611	{
1612	SegmentCache *dt;
1613	target_ulong ptr;
1614	int dpl, cpl, shift;
1615	uint32_t e2;
1616
1617	dt = &env->idt;
1618	if (env->hflags & HF_LMA_MASK) {
1619	shift = 4;
1620	} else {
1621	shift = 3;
1622	}
1623	ptr = dt->base + (intno << shift);
1624	e2 = ldl_kernel(ptr + 4);
1625
1626	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
1627	cpl = env->hflags & HF_CPL_MASK;
1628	/* check privilege if software int */
1629	if (is_int && dpl < cpl)
1630	raise_exception_err(EXCP0D_GPF, (intno << shift) + 2);
1631
1632	/* Since we emulate only user space, we cannot do more than
1633	exiting the emulation with the suitable exception and error
1634	code */
1635	if (is_int)
1636	EIP = next_eip;
1637	}
1638
1639	#if !defined(CONFIG_USER_ONLY)
1640	static void handle_even_inj(int intno, int is_int, int error_code,
1641	int is_hw, int rm)
1642	{
1643	uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
1644	if (!(event_inj & SVM_EVTINJ_VALID)) {
1645	int type;
1646	if (is_int)
1647	type = SVM_EVTINJ_TYPE_SOFT;
1648	else
1649	type = SVM_EVTINJ_TYPE_EXEPT;
1650	event_inj = intno \| type \| SVM_EVTINJ_VALID;
1651	if (!rm && exeption_has_error_code(intno)) {
1652	event_inj \|= SVM_EVTINJ_VALID_ERR;
1653	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err), error_code);
1654	}
1655	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj);
1656	}
1657	}
1658	#endif
1659
1660	/*
1661	* Begin execution of an interruption. is_int is TRUE if coming from
1662	* the int instruction. next_eip is the EIP value AFTER the interrupt
1663	* instruction. It is only relevant if is_int is TRUE.
1664	*/
1665	void do_interrupt(int intno, int is_int, int error_code,
1666	target_ulong next_eip, int is_hw)
1667	{
1668	if (qemu_loglevel_mask(CPU_LOG_INT)) {
1669	if ((env->cr[0] & CR0_PE_MASK)) {
1670	static int count;
1671	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,
1672	count, intno, error_code, is_int,
1673	env->hflags & HF_CPL_MASK,
1674	env->segs[R_CS].selector, EIP,
1675	(int)env->segs[R_CS].base + EIP,
1676	env->segs[R_SS].selector, ESP);
1677	if (intno == 0x0e) {
1678	qemu_log(" CR2=" TARGET_FMT_lx, env->cr[2]);
1679	} else {
1680	qemu_log(" EAX=" TARGET_FMT_lx, EAX);
1681	}
1682	qemu_log("\n");
1683	log_cpu_state(env, X86_DUMP_CCOP);
1684	#if 0
1685	{
1686	int i;
1687	uint8_t *ptr;
1688	qemu_log(" code=");
1689	ptr = env->segs[R_CS].base + env->eip;
1690	for(i = 0; i < 16; i++) {
1691	qemu_log(" %02x", ldub(ptr + i));
1692	}
1693	qemu_log("\n");
1694	}
1695	#endif
1696	count++;
1697	}
1698	}
1699	#ifdef VBOX
1700	if (RT_UNLIKELY(env->state & CPU_EMULATE_SINGLE_STEP)) {
1701	if (is_int) {
1702	RTLogPrintf("do_interrupt: %#04x err=%#x pc=%#RGv%s\n",
1703	intno, error_code, (RTGCPTR)env->eip, is_hw ? " hw" : "");
1704	} else {
1705	RTLogPrintf("do_interrupt: %#04x err=%#x pc=%#RGv next=%#RGv%s\n",
1706	intno, error_code, (RTGCPTR)env->eip, (RTGCPTR)next_eip, is_hw ? " hw" : "");
1707	}
1708	}
1709	#endif
1710	if (env->cr[0] & CR0_PE_MASK) {
1711	#if !defined(CONFIG_USER_ONLY)
1712	if (env->hflags & HF_SVMI_MASK)
1713	handle_even_inj(intno, is_int, error_code, is_hw, 0);
1714	#endif
1715	#ifdef TARGET_X86_64
1716	if (env->hflags & HF_LMA_MASK) {
1717	do_interrupt64(intno, is_int, error_code, next_eip, is_hw);
1718	} else
1719	#endif
1720	{
1721	#ifdef VBOX
1722	/* int xx , v86 code and VME enabled? /
1723	if ( (env->eflags & VM_MASK)
1724	&& (env->cr[4] & CR4_VME_MASK)
1725	&& is_int
1726	&& !is_hw
1727	&& env->eip + 1 != next_eip /* single byte int 3 goes straight to the protected mode handler */
1728	)
1729	do_soft_interrupt_vme(intno, error_code, next_eip);
1730	else
1731	#endif /* VBOX */
1732	do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw);
1733	}
1734	} else {
1735	#if !defined(CONFIG_USER_ONLY)
1736	if (env->hflags & HF_SVMI_MASK)
1737	handle_even_inj(intno, is_int, error_code, is_hw, 1);
1738	#endif
1739	do_interrupt_real(intno, is_int, error_code, next_eip);
1740	}
1741
1742	#if !defined(CONFIG_USER_ONLY)
1743	if (env->hflags & HF_SVMI_MASK) {
1744	uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
1745	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj & ~SVM_EVTINJ_VALID);
1746	}
1747	#endif
1748	}
1749
1750	/* This should come from sysemu.h - if we could include it here... */
1751	void qemu_system_reset_request(void);
1752
1753	/*
1754	* Check nested exceptions and change to double or triple fault if
1755	* needed. It should only be called, if this is not an interrupt.
1756	* Returns the new exception number.
1757	*/
1758	static int check_exception(int intno, int *error_code)
1759	{
1760	int first_contributory = env->old_exception == 0 \|\|
1761	(env->old_exception >= 10 &&
1762	env->old_exception <= 13);
1763	int second_contributory = intno == 0 \|\|
1764	(intno >= 10 && intno <= 13);
1765
1766	qemu_log_mask(CPU_LOG_INT, "check_exception old: 0x%x new 0x%x\n",
1767	env->old_exception, intno);
1768
1769	#if !defined(CONFIG_USER_ONLY)
1770	if (env->old_exception == EXCP08_DBLE) {
1771	if (env->hflags & HF_SVMI_MASK)
1772	helper_vmexit(SVM_EXIT_SHUTDOWN, 0); /* does not return */
1773
1774	qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
1775
1776	# ifndef VBOX
1777	qemu_system_reset_request();
1778	return EXCP_HLT;
1779	# else
1780	remR3RaiseRC(env->pVM, VINF_EM_TRIPLE_FAULT);
1781	return EXCP_RC;
1782	# endif
1783	}
1784	#endif
1785
1786	if ((first_contributory && second_contributory)
1787	\|\| (env->old_exception == EXCP0E_PAGE &&
1788	(second_contributory \|\| (intno == EXCP0E_PAGE)))) {
1789	intno = EXCP08_DBLE;
1790	*error_code = 0;
1791	}
1792
1793	if (second_contributory \|\| (intno == EXCP0E_PAGE) \|\|
1794	(intno == EXCP08_DBLE))
1795	env->old_exception = intno;
1796
1797	return intno;
1798	}
1799
1800	/*
1801	* Signal an interruption. It is executed in the main CPU loop.
1802	* is_int is TRUE if coming from the int instruction. next_eip is the
1803	* EIP value AFTER the interrupt instruction. It is only relevant if
1804	* is_int is TRUE.
1805	*/
1806	static void QEMU_NORETURN raise_interrupt(int intno, int is_int, int error_code,
1807	int next_eip_addend)
1808	{
1809	#if defined(VBOX) && defined(DEBUG)
1810	Log2(("raise_interrupt: %x %x %x %RGv\n", intno, is_int, error_code, (RTGCPTR)env->eip + next_eip_addend));
1811	#endif
1812	if (!is_int) {
1813	helper_svm_check_intercept_param(SVM_EXIT_EXCP_BASE + intno, error_code);
1814	intno = check_exception(intno, &error_code);
1815	} else {
1816	helper_svm_check_intercept_param(SVM_EXIT_SWINT, 0);
1817	}
1818
1819	env->exception_index = intno;
1820	env->error_code = error_code;
1821	env->exception_is_int = is_int;
1822	env->exception_next_eip = env->eip + next_eip_addend;
1823	cpu_loop_exit();
1824	}
1825
1826	/* shortcuts to generate exceptions */
1827
1828	void raise_exception_err(int exception_index, int error_code)
1829	{
1830	raise_interrupt(exception_index, 0, error_code, 0);
1831	}
1832
1833	void raise_exception(int exception_index)
1834	{
1835	raise_interrupt(exception_index, 0, 0, 0);
1836	}
1837
1838	void raise_exception_env(int exception_index, CPUState *nenv)
1839	{
1840	env = nenv;
1841	raise_exception(exception_index);
1842	}
1843	/* SMM support */
1844
1845	#if defined(CONFIG_USER_ONLY)
1846
1847	void do_smm_enter(void)
1848	{
1849	}
1850
1851	void helper_rsm(void)
1852	{
1853	}
1854
1855	#else
1856
1857	#ifdef TARGET_X86_64
1858	#define SMM_REVISION_ID 0x00020064
1859	#else
1860	#define SMM_REVISION_ID 0x00020000
1861	#endif
1862
1863	void do_smm_enter(void)
1864	{
1865	target_ulong sm_state;
1866	SegmentCache *dt;
1867	int i, offset;
1868
1869	qemu_log_mask(CPU_LOG_INT, "SMM: enter\n");
1870	log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
1871
1872	env->hflags \|= HF_SMM_MASK;
1873	cpu_smm_update(env);
1874
1875	sm_state = env->smbase + 0x8000;
1876
1877	#ifdef TARGET_X86_64
1878	for(i = 0; i < 6; i++) {
1879	dt = &env->segs[i];
1880	offset = 0x7e00 + i * 16;
1881	stw_phys(sm_state + offset, dt->selector);
1882	stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
1883	stl_phys(sm_state + offset + 4, dt->limit);
1884	stq_phys(sm_state + offset + 8, dt->base);
1885	}
1886
1887	stq_phys(sm_state + 0x7e68, env->gdt.base);
1888	stl_phys(sm_state + 0x7e64, env->gdt.limit);
1889
1890	stw_phys(sm_state + 0x7e70, env->ldt.selector);
1891	stq_phys(sm_state + 0x7e78, env->ldt.base);
1892	stl_phys(sm_state + 0x7e74, env->ldt.limit);
1893	stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
1894
1895	stq_phys(sm_state + 0x7e88, env->idt.base);
1896	stl_phys(sm_state + 0x7e84, env->idt.limit);
1897
1898	stw_phys(sm_state + 0x7e90, env->tr.selector);
1899	stq_phys(sm_state + 0x7e98, env->tr.base);
1900	stl_phys(sm_state + 0x7e94, env->tr.limit);
1901	stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
1902
1903	stq_phys(sm_state + 0x7ed0, env->efer);
1904
1905	stq_phys(sm_state + 0x7ff8, EAX);
1906	stq_phys(sm_state + 0x7ff0, ECX);
1907	stq_phys(sm_state + 0x7fe8, EDX);
1908	stq_phys(sm_state + 0x7fe0, EBX);
1909	stq_phys(sm_state + 0x7fd8, ESP);
1910	stq_phys(sm_state + 0x7fd0, EBP);
1911	stq_phys(sm_state + 0x7fc8, ESI);
1912	stq_phys(sm_state + 0x7fc0, EDI);
1913	for(i = 8; i < 16; i++)
1914	stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]);
1915	stq_phys(sm_state + 0x7f78, env->eip);
1916	stl_phys(sm_state + 0x7f70, compute_eflags());
1917	stl_phys(sm_state + 0x7f68, env->dr[6]);
1918	stl_phys(sm_state + 0x7f60, env->dr[7]);
1919
1920	stl_phys(sm_state + 0x7f48, env->cr[4]);
1921	stl_phys(sm_state + 0x7f50, env->cr[3]);
1922	stl_phys(sm_state + 0x7f58, env->cr[0]);
1923
1924	stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
1925	stl_phys(sm_state + 0x7f00, env->smbase);
1926	#else
1927	stl_phys(sm_state + 0x7ffc, env->cr[0]);
1928	stl_phys(sm_state + 0x7ff8, env->cr[3]);
1929	stl_phys(sm_state + 0x7ff4, compute_eflags());
1930	stl_phys(sm_state + 0x7ff0, env->eip);
1931	stl_phys(sm_state + 0x7fec, EDI);
1932	stl_phys(sm_state + 0x7fe8, ESI);
1933	stl_phys(sm_state + 0x7fe4, EBP);
1934	stl_phys(sm_state + 0x7fe0, ESP);
1935	stl_phys(sm_state + 0x7fdc, EBX);
1936	stl_phys(sm_state + 0x7fd8, EDX);
1937	stl_phys(sm_state + 0x7fd4, ECX);
1938	stl_phys(sm_state + 0x7fd0, EAX);
1939	stl_phys(sm_state + 0x7fcc, env->dr[6]);
1940	stl_phys(sm_state + 0x7fc8, env->dr[7]);
1941
1942	stl_phys(sm_state + 0x7fc4, env->tr.selector);
1943	stl_phys(sm_state + 0x7f64, env->tr.base);
1944	stl_phys(sm_state + 0x7f60, env->tr.limit);
1945	stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff);
1946
1947	stl_phys(sm_state + 0x7fc0, env->ldt.selector);
1948	stl_phys(sm_state + 0x7f80, env->ldt.base);
1949	stl_phys(sm_state + 0x7f7c, env->ldt.limit);
1950	stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff);
1951
1952	stl_phys(sm_state + 0x7f74, env->gdt.base);
1953	stl_phys(sm_state + 0x7f70, env->gdt.limit);
1954
1955	stl_phys(sm_state + 0x7f58, env->idt.base);
1956	stl_phys(sm_state + 0x7f54, env->idt.limit);
1957
1958	for(i = 0; i < 6; i++) {
1959	dt = &env->segs[i];
1960	if (i < 3)
1961	offset = 0x7f84 + i * 12;
1962	else
1963	offset = 0x7f2c + (i - 3) * 12;
1964	stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector);
1965	stl_phys(sm_state + offset + 8, dt->base);
1966	stl_phys(sm_state + offset + 4, dt->limit);
1967	stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff);
1968	}
1969	stl_phys(sm_state + 0x7f14, env->cr[4]);
1970
1971	stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
1972	stl_phys(sm_state + 0x7ef8, env->smbase);
1973	#endif
1974	/* init SMM cpu state */
1975
1976	#ifdef TARGET_X86_64
1977	cpu_load_efer(env, 0);
1978	#endif
1979	load_eflags(0, ~(CC_O \| CC_S \| CC_Z \| CC_A \| CC_P \| CC_C \| DF_MASK));
1980	env->eip = 0x00008000;
1981	cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase,
1982	0xffffffff, 0);
1983	cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0);
1984	cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0);
1985	cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0);
1986	cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0);
1987	cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0);
1988
1989	cpu_x86_update_cr0(env,
1990	env->cr[0] & ~(CR0_PE_MASK \| CR0_EM_MASK \| CR0_TS_MASK \| CR0_PG_MASK));
1991	cpu_x86_update_cr4(env, 0);
1992	env->dr[7] = 0x00000400;
1993	CC_OP = CC_OP_EFLAGS;
1994	}
1995
1996	void helper_rsm(void)
1997	{
1998	#ifdef VBOX
1999	cpu_abort(env, "helper_rsm");
2000	#else /* !VBOX */
2001	target_ulong sm_state;
2002	int i, offset;
2003	uint32_t val;
2004
2005	sm_state = env->smbase + 0x8000;
2006	#ifdef TARGET_X86_64
2007	cpu_load_efer(env, ldq_phys(sm_state + 0x7ed0));
2008
2009	for(i = 0; i < 6; i++) {
2010	offset = 0x7e00 + i * 16;
2011	cpu_x86_load_seg_cache(env, i,
2012	lduw_phys(sm_state + offset),
2013	ldq_phys(sm_state + offset + 8),
2014	ldl_phys(sm_state + offset + 4),
2015	(lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8);
2016	}
2017
2018	env->gdt.base = ldq_phys(sm_state + 0x7e68);
2019	env->gdt.limit = ldl_phys(sm_state + 0x7e64);
2020
2021	env->ldt.selector = lduw_phys(sm_state + 0x7e70);
2022	env->ldt.base = ldq_phys(sm_state + 0x7e78);
2023	env->ldt.limit = ldl_phys(sm_state + 0x7e74);
2024	env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8;
2025	#ifdef VBOX
2026	env->ldt.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
2027	env->ldt.newselector = 0;
2028	#endif
2029
2030	env->idt.base = ldq_phys(sm_state + 0x7e88);
2031	env->idt.limit = ldl_phys(sm_state + 0x7e84);
2032
2033	env->tr.selector = lduw_phys(sm_state + 0x7e90);
2034	env->tr.base = ldq_phys(sm_state + 0x7e98);
2035	env->tr.limit = ldl_phys(sm_state + 0x7e94);
2036	env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8;
2037	#ifdef VBOX
2038	env->tr.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
2039	env->tr.newselector = 0;
2040	#endif
2041
2042	EAX = ldq_phys(sm_state + 0x7ff8);
2043	ECX = ldq_phys(sm_state + 0x7ff0);
2044	EDX = ldq_phys(sm_state + 0x7fe8);
2045	EBX = ldq_phys(sm_state + 0x7fe0);
2046	ESP = ldq_phys(sm_state + 0x7fd8);
2047	EBP = ldq_phys(sm_state + 0x7fd0);
2048	ESI = ldq_phys(sm_state + 0x7fc8);
2049	EDI = ldq_phys(sm_state + 0x7fc0);
2050	for(i = 8; i < 16; i++)
2051	env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8);
2052	env->eip = ldq_phys(sm_state + 0x7f78);
2053	load_eflags(ldl_phys(sm_state + 0x7f70),
2054	~(CC_O \| CC_S \| CC_Z \| CC_A \| CC_P \| CC_C \| DF_MASK));
2055	env->dr[6] = ldl_phys(sm_state + 0x7f68);
2056	env->dr[7] = ldl_phys(sm_state + 0x7f60);
2057
2058	cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
2059	cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
2060	cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
2061
2062	val = ldl_phys(sm_state + 0x7efc); /* revision ID */
2063	if (val & 0x20000) {
2064	env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff;
2065	}
2066	#else
2067	cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
2068	cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
2069	load_eflags(ldl_phys(sm_state + 0x7ff4),
2070	~(CC_O \| CC_S \| CC_Z \| CC_A \| CC_P \| CC_C \| DF_MASK));
2071	env->eip = ldl_phys(sm_state + 0x7ff0);
2072	EDI = ldl_phys(sm_state + 0x7fec);
2073	ESI = ldl_phys(sm_state + 0x7fe8);
2074	EBP = ldl_phys(sm_state + 0x7fe4);
2075	ESP = ldl_phys(sm_state + 0x7fe0);
2076	EBX = ldl_phys(sm_state + 0x7fdc);
2077	EDX = ldl_phys(sm_state + 0x7fd8);
2078	ECX = ldl_phys(sm_state + 0x7fd4);
2079	EAX = ldl_phys(sm_state + 0x7fd0);
2080	env->dr[6] = ldl_phys(sm_state + 0x7fcc);
2081	env->dr[7] = ldl_phys(sm_state + 0x7fc8);
2082
2083	env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff;
2084	env->tr.base = ldl_phys(sm_state + 0x7f64);
2085	env->tr.limit = ldl_phys(sm_state + 0x7f60);
2086	env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8;
2087	#ifdef VBOX
2088	env->tr.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
2089	env->tr.newselector = 0;
2090	#endif
2091
2092	env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff;
2093	env->ldt.base = ldl_phys(sm_state + 0x7f80);
2094	env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
2095	env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8;
2096	#ifdef VBOX
2097	env->ldt.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
2098	env->ldt.newselector = 0;
2099	#endif
2100
2101	env->gdt.base = ldl_phys(sm_state + 0x7f74);
2102	env->gdt.limit = ldl_phys(sm_state + 0x7f70);
2103
2104	env->idt.base = ldl_phys(sm_state + 0x7f58);
2105	env->idt.limit = ldl_phys(sm_state + 0x7f54);
2106
2107	for(i = 0; i < 6; i++) {
2108	if (i < 3)
2109	offset = 0x7f84 + i * 12;
2110	else
2111	offset = 0x7f2c + (i - 3) * 12;
2112	cpu_x86_load_seg_cache(env, i,
2113	ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff,
2114	ldl_phys(sm_state + offset + 8),
2115	ldl_phys(sm_state + offset + 4),
2116	(ldl_phys(sm_state + offset) & 0xf0ff) << 8);
2117	}
2118	cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
2119
2120	val = ldl_phys(sm_state + 0x7efc); /* revision ID */
2121	if (val & 0x20000) {
2122	env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff;
2123	}
2124	#endif
2125	CC_OP = CC_OP_EFLAGS;
2126	env->hflags &= ~HF_SMM_MASK;
2127	cpu_smm_update(env);
2128
2129	qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
2130	log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP);
2131	#endif /* !VBOX */
2132	}
2133
2134	#endif /* !CONFIG_USER_ONLY */
2135
2136
2137	/* division, flags are undefined */
2138
2139	void helper_divb_AL(target_ulong t0)
2140	{
2141	unsigned int num, den, q, r;
2142
2143	num = (EAX & 0xffff);
2144	den = (t0 & 0xff);
2145	if (den == 0) {
2146	raise_exception(EXCP00_DIVZ);
2147	}
2148	q = (num / den);
2149	if (q > 0xff)
2150	raise_exception(EXCP00_DIVZ);
2151	q &= 0xff;
2152	r = (num % den) & 0xff;
2153	EAX = (EAX & ~0xffff) \| (r << 8) \| q;
2154	}
2155
2156	void helper_idivb_AL(target_ulong t0)
2157	{
2158	int num, den, q, r;
2159
2160	num = (int16_t)EAX;
2161	den = (int8_t)t0;
2162	if (den == 0) {
2163	raise_exception(EXCP00_DIVZ);
2164	}
2165	q = (num / den);
2166	if (q != (int8_t)q)
2167	raise_exception(EXCP00_DIVZ);
2168	q &= 0xff;
2169	r = (num % den) & 0xff;
2170	EAX = (EAX & ~0xffff) \| (r << 8) \| q;
2171	}
2172
2173	void helper_divw_AX(target_ulong t0)
2174	{
2175	unsigned int num, den, q, r;
2176
2177	num = (EAX & 0xffff) \| ((EDX & 0xffff) << 16);
2178	den = (t0 & 0xffff);
2179	if (den == 0) {
2180	raise_exception(EXCP00_DIVZ);
2181	}
2182	q = (num / den);
2183	if (q > 0xffff)
2184	raise_exception(EXCP00_DIVZ);
2185	q &= 0xffff;
2186	r = (num % den) & 0xffff;
2187	EAX = (EAX & ~0xffff) \| q;
2188	EDX = (EDX & ~0xffff) \| r;
2189	}
2190
2191	void helper_idivw_AX(target_ulong t0)
2192	{
2193	int num, den, q, r;
2194
2195	num = (EAX & 0xffff) \| ((EDX & 0xffff) << 16);
2196	den = (int16_t)t0;
2197	if (den == 0) {
2198	raise_exception(EXCP00_DIVZ);
2199	}
2200	q = (num / den);
2201	if (q != (int16_t)q)
2202	raise_exception(EXCP00_DIVZ);
2203	q &= 0xffff;
2204	r = (num % den) & 0xffff;
2205	EAX = (EAX & ~0xffff) \| q;
2206	EDX = (EDX & ~0xffff) \| r;
2207	}
2208
2209	void helper_divl_EAX(target_ulong t0)
2210	{
2211	unsigned int den, r;
2212	uint64_t num, q;
2213
2214	num = ((uint32_t)EAX) \| ((uint64_t)((uint32_t)EDX) << 32);
2215	den = t0;
2216	if (den == 0) {
2217	raise_exception(EXCP00_DIVZ);
2218	}
2219	q = (num / den);
2220	r = (num % den);
2221	if (q > 0xffffffff)
2222	raise_exception(EXCP00_DIVZ);
2223	EAX = (uint32_t)q;
2224	EDX = (uint32_t)r;
2225	}
2226
2227	void helper_idivl_EAX(target_ulong t0)
2228	{
2229	int den, r;
2230	int64_t num, q;
2231
2232	num = ((uint32_t)EAX) \| ((uint64_t)((uint32_t)EDX) << 32);
2233	den = t0;
2234	if (den == 0) {
2235	raise_exception(EXCP00_DIVZ);
2236	}
2237	q = (num / den);
2238	r = (num % den);
2239	if (q != (int32_t)q)
2240	raise_exception(EXCP00_DIVZ);
2241	EAX = (uint32_t)q;
2242	EDX = (uint32_t)r;
2243	}
2244
2245	/* bcd */
2246
2247	/* XXX: exception */
2248	void helper_aam(int base)
2249	{
2250	int al, ah;
2251	al = EAX & 0xff;
2252	ah = al / base;
2253	al = al % base;
2254	EAX = (EAX & ~0xffff) \| al \| (ah << 8);
2255	CC_DST = al;
2256	}
2257
2258	void helper_aad(int base)
2259	{
2260	int al, ah;
2261	al = EAX & 0xff;
2262	ah = (EAX >> 8) & 0xff;
2263	al = ((ah * base) + al) & 0xff;
2264	EAX = (EAX & ~0xffff) \| al;
2265	CC_DST = al;
2266	}
2267
2268	void helper_aaa(void)
2269	{
2270	int icarry;
2271	int al, ah, af;
2272	int eflags;
2273
2274	eflags = helper_cc_compute_all(CC_OP);
2275	af = eflags & CC_A;
2276	al = EAX & 0xff;
2277	ah = (EAX >> 8) & 0xff;
2278
2279	icarry = (al > 0xf9);
2280	if (((al & 0x0f) > 9 ) \|\| af) {
2281	al = (al + 6) & 0x0f;
2282	ah = (ah + 1 + icarry) & 0xff;
2283	eflags \|= CC_C \| CC_A;
2284	} else {
2285	eflags &= ~(CC_C \| CC_A);
2286	al &= 0x0f;
2287	}
2288	EAX = (EAX & ~0xffff) \| al \| (ah << 8);
2289	CC_SRC = eflags;
2290	}
2291
2292	void helper_aas(void)
2293	{
2294	int icarry;
2295	int al, ah, af;
2296	int eflags;
2297
2298	eflags = helper_cc_compute_all(CC_OP);
2299	af = eflags & CC_A;
2300	al = EAX & 0xff;
2301	ah = (EAX >> 8) & 0xff;
2302
2303	icarry = (al < 6);
2304	if (((al & 0x0f) > 9 ) \|\| af) {
2305	al = (al - 6) & 0x0f;
2306	ah = (ah - 1 - icarry) & 0xff;
2307	eflags \|= CC_C \| CC_A;
2308	} else {
2309	eflags &= ~(CC_C \| CC_A);
2310	al &= 0x0f;
2311	}
2312	EAX = (EAX & ~0xffff) \| al \| (ah << 8);
2313	CC_SRC = eflags;
2314	}
2315
2316	void helper_daa(void)
2317	{
2318	int al, af, cf;
2319	int eflags;
2320
2321	eflags = helper_cc_compute_all(CC_OP);
2322	cf = eflags & CC_C;
2323	af = eflags & CC_A;
2324	al = EAX & 0xff;
2325
2326	eflags = 0;
2327	if (((al & 0x0f) > 9 ) \|\| af) {
2328	al = (al + 6) & 0xff;
2329	eflags \|= CC_A;
2330	}
2331	if ((al > 0x9f) \|\| cf) {
2332	al = (al + 0x60) & 0xff;
2333	eflags \|= CC_C;
2334	}
2335	EAX = (EAX & ~0xff) \| al;
2336	/* well, speed is not an issue here, so we compute the flags by hand */
2337	eflags \|= (al == 0) << 6; /* zf */
2338	eflags \|= parity_table[al]; /* pf */
2339	eflags \|= (al & 0x80); /* sf */
2340	CC_SRC = eflags;
2341	}
2342
2343	void helper_das(void)
2344	{
2345	int al, al1, af, cf;
2346	int eflags;
2347
2348	eflags = helper_cc_compute_all(CC_OP);
2349	cf = eflags & CC_C;
2350	af = eflags & CC_A;
2351	al = EAX & 0xff;
2352
2353	eflags = 0;
2354	al1 = al;
2355	if (((al & 0x0f) > 9 ) \|\| af) {
2356	eflags \|= CC_A;
2357	if (al < 6 \|\| cf)
2358	eflags \|= CC_C;
2359	al = (al - 6) & 0xff;
2360	}
2361	if ((al1 > 0x99) \|\| cf) {
2362	al = (al - 0x60) & 0xff;
2363	eflags \|= CC_C;
2364	}
2365	EAX = (EAX & ~0xff) \| al;
2366	/* well, speed is not an issue here, so we compute the flags by hand */
2367	eflags \|= (al == 0) << 6; /* zf */
2368	eflags \|= parity_table[al]; /* pf */
2369	eflags \|= (al & 0x80); /* sf */
2370	CC_SRC = eflags;
2371	}
2372
2373	void helper_into(int next_eip_addend)
2374	{
2375	int eflags;
2376	eflags = helper_cc_compute_all(CC_OP);
2377	if (eflags & CC_O) {
2378	raise_interrupt(EXCP04_INTO, 1, 0, next_eip_addend);
2379	}
2380	}
2381
2382	void helper_cmpxchg8b(target_ulong a0)
2383	{
2384	uint64_t d;
2385	int eflags;
2386
2387	eflags = helper_cc_compute_all(CC_OP);
2388	d = ldq(a0);
2389	if (d == (((uint64_t)EDX << 32) \| (uint32_t)EAX)) {
2390	stq(a0, ((uint64_t)ECX << 32) \| (uint32_t)EBX);
2391	eflags \|= CC_Z;
2392	} else {
2393	/* always do the store */
2394	stq(a0, d);
2395	EDX = (uint32_t)(d >> 32);
2396	EAX = (uint32_t)d;
2397	eflags &= ~CC_Z;
2398	}
2399	CC_SRC = eflags;
2400	}
2401
2402	#ifdef TARGET_X86_64
2403	void helper_cmpxchg16b(target_ulong a0)
2404	{
2405	uint64_t d0, d1;
2406	int eflags;
2407
2408	if ((a0 & 0xf) != 0)
2409	raise_exception(EXCP0D_GPF);
2410	eflags = helper_cc_compute_all(CC_OP);
2411	d0 = ldq(a0);
2412	d1 = ldq(a0 + 8);
2413	if (d0 == EAX && d1 == EDX) {
2414	stq(a0, EBX);
2415	stq(a0 + 8, ECX);
2416	eflags \|= CC_Z;
2417	} else {
2418	/* always do the store */
2419	stq(a0, d0);
2420	stq(a0 + 8, d1);
2421	EDX = d1;
2422	EAX = d0;
2423	eflags &= ~CC_Z;
2424	}
2425	CC_SRC = eflags;
2426	}
2427	#endif
2428
2429	void helper_single_step(void)
2430	{
2431	#ifndef CONFIG_USER_ONLY
2432	check_hw_breakpoints(env, 1);
2433	env->dr[6] \|= DR6_BS;
2434	#endif
2435	raise_exception(EXCP01_DB);
2436	}
2437
2438	void helper_cpuid(void)
2439	{
2440	uint32_t eax, ebx, ecx, edx;
2441
2442	helper_svm_check_intercept_param(SVM_EXIT_CPUID, 0);
2443
2444	cpu_x86_cpuid(env, (uint32_t)EAX, (uint32_t)ECX, &eax, &ebx, &ecx, &edx);
2445	EAX = eax;
2446	EBX = ebx;
2447	ECX = ecx;
2448	EDX = edx;
2449	}
2450
2451	void helper_enter_level(int level, int data32, target_ulong t1)
2452	{
2453	target_ulong ssp;
2454	uint32_t esp_mask, esp, ebp;
2455
2456	esp_mask = get_sp_mask(env->segs[R_SS].flags);
2457	ssp = env->segs[R_SS].base;
2458	ebp = EBP;
2459	esp = ESP;
2460	if (data32) {
2461	/* 32 bit */
2462	esp -= 4;
2463	while (--level) {
2464	esp -= 4;
2465	ebp -= 4;
2466	stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask)));
2467	}
2468	esp -= 4;
2469	stl(ssp + (esp & esp_mask), t1);
2470	} else {
2471	/* 16 bit */
2472	esp -= 2;
2473	while (--level) {
2474	esp -= 2;
2475	ebp -= 2;
2476	stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask)));
2477	}
2478	esp -= 2;
2479	stw(ssp + (esp & esp_mask), t1);
2480	}
2481	}
2482
2483	#ifdef TARGET_X86_64
2484	void helper_enter64_level(int level, int data64, target_ulong t1)
2485	{
2486	target_ulong esp, ebp;
2487	ebp = EBP;
2488	esp = ESP;
2489
2490	if (data64) {
2491	/* 64 bit */
2492	esp -= 8;
2493	while (--level) {
2494	esp -= 8;
2495	ebp -= 8;
2496	stq(esp, ldq(ebp));
2497	}
2498	esp -= 8;
2499	stq(esp, t1);
2500	} else {
2501	/* 16 bit */
2502	esp -= 2;
2503	while (--level) {
2504	esp -= 2;
2505	ebp -= 2;
2506	stw(esp, lduw(ebp));
2507	}
2508	esp -= 2;
2509	stw(esp, t1);
2510	}
2511	}
2512	#endif
2513
2514	void helper_lldt(int selector)
2515	{
2516	SegmentCache *dt;
2517	uint32_t e1, e2;
2518	#ifndef VBOX
2519	int index, entry_limit;
2520	#else
2521	unsigned int index, entry_limit;
2522	#endif
2523	target_ulong ptr;
2524
2525	#ifdef VBOX
2526	Log(("helper_lldt_T0: old ldtr=%RTsel {.base=%RGv, .limit=%RGv} new=%RTsel\n",
2527	(RTSEL)env->ldt.selector, (RTGCPTR)env->ldt.base, (RTGCPTR)env->ldt.limit, (RTSEL)(selector & 0xffff)));
2528	#endif
2529
2530	selector &= 0xffff;
2531	if ((selector & 0xfffc) == 0) {
2532	/* XXX: NULL selector case: invalid LDT */
2533	env->ldt.base = 0;
2534	env->ldt.limit = 0;
2535	#ifdef VBOX
2536	env->ldt.flags = DESC_INTEL_UNUSABLE;
2537	env->ldt.fVBoxFlags = CPUMSELREG_FLAGS_VALID;
2538	env->ldt.newselector = 0;
2539	#endif
2540	} else {
2541	if (selector & 0x4)
2542	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2543	dt = &env->gdt;
2544	index = selector & ~7;
2545	#ifdef TARGET_X86_64
2546	if (env->hflags & HF_LMA_MASK)
2547	entry_limit = 15;
2548	else
2549	#endif
2550	entry_limit = 7;
2551	if ((index + entry_limit) > dt->limit)
2552	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2553	ptr = dt->base + index;
2554	e1 = ldl_kernel(ptr);
2555	e2 = ldl_kernel(ptr + 4);
2556	if ((e2 & DESC_S_MASK) \|\| ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2)
2557	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2558	if (!(e2 & DESC_P_MASK))
2559	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2560	#ifdef TARGET_X86_64
2561	if (env->hflags & HF_LMA_MASK) {
2562	uint32_t e3;
2563	e3 = ldl_kernel(ptr + 8);
2564	load_seg_cache_raw_dt(&env->ldt, e1, e2);
2565	env->ldt.base \|= (target_ulong)e3 << 32;
2566	} else
2567	#endif
2568	{
2569	load_seg_cache_raw_dt(&env->ldt, e1, e2);
2570	}
2571	}
2572	env->ldt.selector = selector;
2573	#ifdef VBOX
2574	Log(("helper_lldt_T0: new ldtr=%RTsel {.base=%RGv, .limit=%RGv}\n",
2575	(RTSEL)env->ldt.selector, (RTGCPTR)env->ldt.base, (RTGCPTR)env->ldt.limit));
2576	#endif
2577	}
2578
2579	void helper_ltr(int selector)
2580	{
2581	SegmentCache *dt;
2582	uint32_t e1, e2;
2583	#ifndef VBOX
2584	int index, type, entry_limit;
2585	#else
2586	unsigned int index;
2587	int type, entry_limit;
2588	#endif
2589	target_ulong ptr;
2590
2591	#ifdef VBOX
2592	Log(("helper_ltr: pc=%RGv old tr=%RTsel {.base=%RGv, .limit=%RGv, .flags=%RX32} new=%RTsel\n",
2593	(RTGCPTR)env->eip, (RTSEL)env->tr.selector, (RTGCPTR)env->tr.base, (RTGCPTR)env->tr.limit,
2594	env->tr.flags, (RTSEL)(selector & 0xffff)));
2595	#endif
2596	selector &= 0xffff;
2597	if ((selector & 0xfffc) == 0) {
2598	/* NULL selector case: invalid TR */
2599	#ifdef VBOX
2600	raise_exception_err(EXCP0A_TSS, 0);
2601	#else
2602	env->tr.base = 0;
2603	env->tr.limit = 0;
2604	env->tr.flags = 0;
2605	#endif
2606	} else {
2607	if (selector & 0x4)
2608	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2609	dt = &env->gdt;
2610	index = selector & ~7;
2611	#ifdef TARGET_X86_64
2612	if (env->hflags & HF_LMA_MASK)
2613	entry_limit = 15;
2614	else
2615	#endif
2616	entry_limit = 7;
2617	if ((index + entry_limit) > dt->limit)
2618	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2619	ptr = dt->base + index;
2620	e1 = ldl_kernel(ptr);
2621	e2 = ldl_kernel(ptr + 4);
2622	type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
2623	if ((e2 & DESC_S_MASK) \|\|
2624	(type != 1 && type != 9))
2625	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2626	if (!(e2 & DESC_P_MASK))
2627	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2628	#ifdef TARGET_X86_64
2629	if (env->hflags & HF_LMA_MASK) {
2630	uint32_t e3, e4;
2631	e3 = ldl_kernel(ptr + 8);
2632	e4 = ldl_kernel(ptr + 12);
2633	if ((e4 >> DESC_TYPE_SHIFT) & 0xf)
2634	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2635	load_seg_cache_raw_dt(&env->tr, e1, e2);
2636	env->tr.base \|= (target_ulong)e3 << 32;
2637	} else
2638	#endif
2639	{
2640	load_seg_cache_raw_dt(&env->tr, e1, e2);
2641	}
2642	env->tr.flags \|= DESC_TSS_BUSY_MASK;
2643	e2 \|= DESC_TSS_BUSY_MASK;
2644	stl_kernel(ptr + 4, e2);
2645	}
2646	env->tr.selector = selector;
2647	#ifdef VBOX
2648	Log(("helper_ltr: new tr=%RTsel {.base=%RGv, .limit=%RGv, .flags=%RX32} new=%RTsel\n",
2649	(RTSEL)env->tr.selector, (RTGCPTR)env->tr.base, (RTGCPTR)env->tr.limit,
2650	env->tr.flags, (RTSEL)(selector & 0xffff)));
2651	#endif
2652	}
2653
2654	/* only works if protected mode and not VM86. seg_reg must be != R_CS */
2655	void helper_load_seg(int seg_reg, int selector)
2656	{
2657	uint32_t e1, e2;
2658	int cpl, dpl, rpl;
2659	SegmentCache *dt;
2660	#ifndef VBOX
2661	int index;
2662	#else
2663	unsigned int index;
2664	#endif
2665	target_ulong ptr;
2666
2667	selector &= 0xffff;
2668	cpl = env->hflags & HF_CPL_MASK;
2669	#ifdef VBOX
2670
2671	/* Trying to load a selector with CPL=1? */
2672	if (cpl == 0 && (selector & 3) == 1 && (env->state & CPU_RAW_RING0))
2673	{
2674	Log(("RPL 1 -> sel %04X -> %04X (helper_load_seg)\n", selector, selector & 0xfffc));
2675	selector = selector & 0xfffc;
2676	}
2677	#endif /* VBOX */
2678	if ((selector & 0xfffc) == 0) {
2679	/* null selector case */
2680	#ifndef VBOX
2681	if (seg_reg == R_SS
2682	#ifdef TARGET_X86_64
2683	&& (!(env->hflags & HF_CS64_MASK) \|\| cpl == 3)
2684	#endif
2685	)
2686	raise_exception_err(EXCP0D_GPF, 0);
2687	cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0);
2688	#else
2689	if (seg_reg == R_SS) {
2690	if (!(env->hflags & HF_CS64_MASK) \|\| cpl == 3)
2691	raise_exception_err(EXCP0D_GPF, 0);
2692	e2 = (cpl << DESC_DPL_SHIFT) \| DESC_INTEL_UNUSABLE;
2693	} else {
2694	e2 = DESC_INTEL_UNUSABLE;
2695	}
2696	cpu_x86_load_seg_cache_with_clean_flags(env, seg_reg, selector, 0, 0, e2);
2697	#endif
2698	} else {
2699
2700	if (selector & 0x4)
2701	dt = &env->ldt;
2702	else
2703	dt = &env->gdt;
2704	index = selector & ~7;
2705	if ((index + 7) > dt->limit)
2706	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2707	ptr = dt->base + index;
2708	e1 = ldl_kernel(ptr);
2709	e2 = ldl_kernel(ptr + 4);
2710
2711	if (!(e2 & DESC_S_MASK))
2712	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2713	rpl = selector & 3;
2714	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2715	if (seg_reg == R_SS) {
2716	/* must be writable segment */
2717	if ((e2 & DESC_CS_MASK) \|\| !(e2 & DESC_W_MASK))
2718	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2719	if (rpl != cpl \|\| dpl != cpl)
2720	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2721	} else {
2722	/* must be readable segment */
2723	if ((e2 & (DESC_CS_MASK \| DESC_R_MASK)) == DESC_CS_MASK)
2724	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2725
2726	if (!(e2 & DESC_CS_MASK) \|\| !(e2 & DESC_C_MASK)) {
2727	/* if not conforming code, test rights */
2728	if (dpl < cpl \|\| dpl < rpl)
2729	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
2730	}
2731	}
2732
2733	if (!(e2 & DESC_P_MASK)) {
2734	if (seg_reg == R_SS)
2735	raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
2736	else
2737	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
2738	}
2739
2740	/* set the access bit if not already set */
2741	if (!(e2 & DESC_A_MASK)) {
2742	e2 \|= DESC_A_MASK;
2743	stl_kernel(ptr + 4, e2);
2744	}
2745
2746	cpu_x86_load_seg_cache(env, seg_reg, selector,
2747	get_seg_base(e1, e2),
2748	get_seg_limit(e1, e2),
2749	e2);
2750	#if 0
2751	qemu_log("load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
2752	selector, (unsigned long)sc->base, sc->limit, sc->flags);
2753	#endif
2754	}
2755	}
2756
2757	/* protected mode jump */
2758	void helper_ljmp_protected(int new_cs, target_ulong new_eip,
2759	int next_eip_addend)
2760	{
2761	int gate_cs, type;
2762	uint32_t e1, e2, cpl, dpl, rpl, limit;
2763	target_ulong next_eip;
2764
2765	#ifdef VBOX /** @todo Why do we do this? */
2766	e1 = e2 = 0;
2767	#endif
2768	if ((new_cs & 0xfffc) == 0)
2769	raise_exception_err(EXCP0D_GPF, 0);
2770	if (load_segment(&e1, &e2, new_cs) != 0)
2771	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2772	cpl = env->hflags & HF_CPL_MASK;
2773	if (e2 & DESC_S_MASK) {
2774	if (!(e2 & DESC_CS_MASK))
2775	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2776	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2777	if (e2 & DESC_C_MASK) {
2778	/* conforming code segment */
2779	if (dpl > cpl)
2780	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2781	} else {
2782	/* non conforming code segment */
2783	rpl = new_cs & 3;
2784	if (rpl > cpl)
2785	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2786	if (dpl != cpl)
2787	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2788	}
2789	if (!(e2 & DESC_P_MASK))
2790	raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2791	limit = get_seg_limit(e1, e2);
2792	if (new_eip > limit &&
2793	!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK))
2794	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2795	#ifdef VBOX
2796	if (!(e2 & DESC_A_MASK))
2797	e2 = set_segment_accessed(new_cs, e2);
2798	#endif
2799	cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) \| cpl,
2800	get_seg_base(e1, e2), limit, e2);
2801	EIP = new_eip;
2802	} else {
2803	/* jump to call or task gate */
2804	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2805	rpl = new_cs & 3;
2806	cpl = env->hflags & HF_CPL_MASK;
2807	type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
2808	switch(type) {
2809	case 1: /* 286 TSS */
2810	case 9: /* 386 TSS */
2811	case 5: /* task gate */
2812	if (dpl < cpl \|\| dpl < rpl)
2813	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2814	next_eip = env->eip + next_eip_addend;
2815	switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip);
2816	CC_OP = CC_OP_EFLAGS;
2817	break;
2818	case 4: /* 286 call gate */
2819	case 12: /* 386 call gate */
2820	if ((dpl < cpl) \|\| (dpl < rpl))
2821	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2822	if (!(e2 & DESC_P_MASK))
2823	raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2824	gate_cs = e1 >> 16;
2825	new_eip = (e1 & 0xffff);
2826	if (type == 12)
2827	new_eip \|= (e2 & 0xffff0000);
2828	if (load_segment(&e1, &e2, gate_cs) != 0)
2829	raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2830	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2831	/* must be code segment */
2832	if (((e2 & (DESC_S_MASK \| DESC_CS_MASK)) !=
2833	(DESC_S_MASK \| DESC_CS_MASK)))
2834	raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2835	if (((e2 & DESC_C_MASK) && (dpl > cpl)) \|\|
2836	(!(e2 & DESC_C_MASK) && (dpl != cpl)))
2837	raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2838	if (!(e2 & DESC_P_MASK))
2839	#ifdef VBOX /* See page 3-514 of 253666.pdf */
2840	raise_exception_err(EXCP0B_NOSEG, gate_cs & 0xfffc);
2841	#else
2842	raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
2843	#endif
2844	limit = get_seg_limit(e1, e2);
2845	if (new_eip > limit)
2846	raise_exception_err(EXCP0D_GPF, 0);
2847	cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) \| cpl,
2848	get_seg_base(e1, e2), limit, e2);
2849	EIP = new_eip;
2850	break;
2851	default:
2852	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2853	break;
2854	}
2855	}
2856	}
2857
2858	/* real mode call */
2859	void helper_lcall_real(int new_cs, target_ulong new_eip1,
2860	int shift, int next_eip)
2861	{
2862	int new_eip;
2863	uint32_t esp, esp_mask;
2864	target_ulong ssp;
2865
2866	new_eip = new_eip1;
2867	esp = ESP;
2868	esp_mask = get_sp_mask(env->segs[R_SS].flags);
2869	ssp = env->segs[R_SS].base;
2870	if (shift) {
2871	PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector);
2872	PUSHL(ssp, esp, esp_mask, next_eip);
2873	} else {
2874	PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector);
2875	PUSHW(ssp, esp, esp_mask, next_eip);
2876	}
2877
2878	SET_ESP(esp, esp_mask);
2879	env->eip = new_eip;
2880	env->segs[R_CS].selector = new_cs;
2881	env->segs[R_CS].base = (new_cs << 4);
2882	}
2883
2884	/* protected mode call */
2885	void helper_lcall_protected(int new_cs, target_ulong new_eip,
2886	int shift, int next_eip_addend)
2887	{
2888	int new_stack, i;
2889	uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count;
2890	uint32_t ss = 0, ss_e1 = 0, ss_e2 = 0, sp, type, ss_dpl, sp_mask;
2891	uint32_t val, limit, old_sp_mask;
2892	target_ulong ssp, old_ssp, next_eip;
2893
2894	#ifdef VBOX /** @todo Why do we do this? */
2895	e1 = e2 = 0;
2896	#endif
2897	next_eip = env->eip + next_eip_addend;
2898	LOG_PCALL("lcall %04x:%08x s=%d\n", new_cs, (uint32_t)new_eip, shift);
2899	LOG_PCALL_STATE(env);
2900	if ((new_cs & 0xfffc) == 0)
2901	raise_exception_err(EXCP0D_GPF, 0);
2902	if (load_segment(&e1, &e2, new_cs) != 0)
2903	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2904	cpl = env->hflags & HF_CPL_MASK;
2905	LOG_PCALL("desc=%08x:%08x\n", e1, e2);
2906	if (e2 & DESC_S_MASK) {
2907	if (!(e2 & DESC_CS_MASK))
2908	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2909	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2910	if (e2 & DESC_C_MASK) {
2911	/* conforming code segment */
2912	if (dpl > cpl)
2913	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2914	} else {
2915	/* non conforming code segment */
2916	rpl = new_cs & 3;
2917	if (rpl > cpl)
2918	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2919	if (dpl != cpl)
2920	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2921	}
2922	if (!(e2 & DESC_P_MASK))
2923	raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2924	#ifdef VBOX
2925	if (!(e2 & DESC_A_MASK))
2926	e2 = set_segment_accessed(new_cs, e2);
2927	#endif
2928
2929	#ifdef TARGET_X86_64
2930	/* XXX: check 16/32 bit cases in long mode */
2931	if (shift == 2) {
2932	target_ulong rsp;
2933	/* 64 bit case */
2934	rsp = ESP;
2935	PUSHQ(rsp, env->segs[R_CS].selector);
2936	PUSHQ(rsp, next_eip);
2937	/* from this point, not restartable */
2938	ESP = rsp;
2939	cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) \| cpl,
2940	get_seg_base(e1, e2),
2941	get_seg_limit(e1, e2), e2);
2942	EIP = new_eip;
2943	} else
2944	#endif
2945	{
2946	sp = ESP;
2947	sp_mask = get_sp_mask(env->segs[R_SS].flags);
2948	ssp = env->segs[R_SS].base;
2949	if (shift) {
2950	PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector);
2951	PUSHL(ssp, sp, sp_mask, next_eip);
2952	} else {
2953	PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
2954	PUSHW(ssp, sp, sp_mask, next_eip);
2955	}
2956
2957	limit = get_seg_limit(e1, e2);
2958	if (new_eip > limit)
2959	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2960	/* from this point, not restartable */
2961	SET_ESP(sp, sp_mask);
2962	cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) \| cpl,
2963	get_seg_base(e1, e2), limit, e2);
2964	EIP = new_eip;
2965	}
2966	} else {
2967	/* check gate type */
2968	type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
2969	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
2970	rpl = new_cs & 3;
2971	switch(type) {
2972	case 1: /* available 286 TSS */
2973	case 9: /* available 386 TSS */
2974	case 5: /* task gate */
2975	if (dpl < cpl \|\| dpl < rpl)
2976	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2977	switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip);
2978	CC_OP = CC_OP_EFLAGS;
2979	return;
2980	case 4: /* 286 call gate */
2981	case 12: /* 386 call gate */
2982	break;
2983	default:
2984	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2985	break;
2986	}
2987	shift = type >> 3;
2988
2989	if (dpl < cpl \|\| dpl < rpl)
2990	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
2991	/* check valid bit */
2992	if (!(e2 & DESC_P_MASK))
2993	raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
2994	selector = e1 >> 16;
2995	offset = (e2 & 0xffff0000) \| (e1 & 0x0000ffff);
2996	param_count = e2 & 0x1f;
2997	if ((selector & 0xfffc) == 0)
2998	raise_exception_err(EXCP0D_GPF, 0);
2999
3000	if (load_segment(&e1, &e2, selector) != 0)
3001	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
3002	if (!(e2 & DESC_S_MASK) \|\| !(e2 & (DESC_CS_MASK)))
3003	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
3004	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3005	if (dpl > cpl)
3006	raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
3007	if (!(e2 & DESC_P_MASK))
3008	raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
3009
3010	if (!(e2 & DESC_C_MASK) && dpl < cpl) {
3011	/* to inner privilege */
3012	get_ss_esp_from_tss(&ss, &sp, dpl);
3013	LOG_PCALL("new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n",
3014	ss, sp, param_count, ESP);
3015	if ((ss & 0xfffc) == 0)
3016	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
3017	if ((ss & 3) != dpl)
3018	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
3019	if (load_segment(&ss_e1, &ss_e2, ss) != 0)
3020	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
3021	ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
3022	if (ss_dpl != dpl)
3023	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
3024	if (!(ss_e2 & DESC_S_MASK) \|\|
3025	(ss_e2 & DESC_CS_MASK) \|\|
3026	!(ss_e2 & DESC_W_MASK))
3027	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
3028	if (!(ss_e2 & DESC_P_MASK))
3029	#ifdef VBOX /* See page 3-99 of 253666.pdf */
3030	raise_exception_err(EXCP0C_STACK, ss & 0xfffc);
3031	#else
3032	raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
3033	#endif
3034
3035	// push_size = ((param_count * 2) + 8) << shift;
3036
3037	old_sp_mask = get_sp_mask(env->segs[R_SS].flags);
3038	old_ssp = env->segs[R_SS].base;
3039
3040	sp_mask = get_sp_mask(ss_e2);
3041	ssp = get_seg_base(ss_e1, ss_e2);
3042	if (shift) {
3043	PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector);
3044	PUSHL(ssp, sp, sp_mask, ESP);
3045	for(i = param_count - 1; i >= 0; i--) {
3046	val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
3047	PUSHL(ssp, sp, sp_mask, val);
3048	}
3049	} else {
3050	PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector);
3051	PUSHW(ssp, sp, sp_mask, ESP);
3052	for(i = param_count - 1; i >= 0; i--) {
3053	val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
3054	PUSHW(ssp, sp, sp_mask, val);
3055	}
3056	}
3057	new_stack = 1;
3058	} else {
3059	/* to same privilege */
3060	sp = ESP;
3061	sp_mask = get_sp_mask(env->segs[R_SS].flags);
3062	ssp = env->segs[R_SS].base;
3063	// push_size = (4 << shift);
3064	new_stack = 0;
3065	}
3066
3067	if (shift) {
3068	PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector);
3069	PUSHL(ssp, sp, sp_mask, next_eip);
3070	} else {
3071	PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector);
3072	PUSHW(ssp, sp, sp_mask, next_eip);
3073	}
3074
3075	/* from this point, not restartable */
3076
3077	if (new_stack) {
3078	ss = (ss & ~3) \| dpl;
3079	cpu_x86_load_seg_cache(env, R_SS, ss,
3080	ssp,
3081	get_seg_limit(ss_e1, ss_e2),
3082	ss_e2);
3083	}
3084
3085	selector = (selector & ~3) \| dpl;
3086	cpu_x86_load_seg_cache(env, R_CS, selector,
3087	get_seg_base(e1, e2),
3088	get_seg_limit(e1, e2),
3089	e2);
3090	cpu_x86_set_cpl(env, dpl);
3091	SET_ESP(sp, sp_mask);
3092	EIP = offset;
3093	}
3094	}
3095
3096	/* real and vm86 mode iret */
3097	void helper_iret_real(int shift)
3098	{
3099	uint32_t sp, new_cs, new_eip, new_eflags, sp_mask;
3100	target_ulong ssp;
3101	int eflags_mask;
3102	#ifdef VBOX
3103	bool fVME = false;
3104
3105	remR3TrapClear(env->pVM);
3106	#endif /* VBOX */
3107
3108	sp_mask = 0xffff; /* XXXX: use SS segment size ? */
3109	sp = ESP;
3110	ssp = env->segs[R_SS].base;
3111	if (shift == 1) {
3112	/* 32 bits */
3113	POPL(ssp, sp, sp_mask, new_eip);
3114	POPL(ssp, sp, sp_mask, new_cs);
3115	new_cs &= 0xffff;
3116	POPL(ssp, sp, sp_mask, new_eflags);
3117	} else {
3118	/* 16 bits */
3119	POPW(ssp, sp, sp_mask, new_eip);
3120	POPW(ssp, sp, sp_mask, new_cs);
3121	POPW(ssp, sp, sp_mask, new_eflags);
3122	}
3123	#ifdef VBOX
3124	if ( (env->eflags & VM_MASK)
3125	&& ((env->eflags >> IOPL_SHIFT) & 3) != 3
3126	&& (env->cr[4] & CR4_VME_MASK)) /* implied or else we would fault earlier */
3127	{
3128	fVME = true;
3129	/* if virtual interrupt pending and (virtual) interrupts will be enabled -> #GP */
3130	/* if TF will be set -> #GP */
3131	if ( ((new_eflags & IF_MASK) && (env->eflags & VIP_MASK))
3132	\|\| (new_eflags & TF_MASK))
3133	raise_exception(EXCP0D_GPF);
3134	}
3135	#endif /* VBOX */
3136	ESP = (ESP & ~sp_mask) \| (sp & sp_mask);
3137	env->segs[R_CS].selector = new_cs;
3138	env->segs[R_CS].base = (new_cs << 4);
3139	env->eip = new_eip;
3140	#ifdef VBOX
3141	if (fVME)
3142	eflags_mask = TF_MASK \| AC_MASK \| ID_MASK \| RF_MASK \| NT_MASK;
3143	else
3144	#endif
3145	if (env->eflags & VM_MASK)
3146	eflags_mask = TF_MASK \| AC_MASK \| ID_MASK \| IF_MASK \| RF_MASK \| NT_MASK;
3147	else
3148	eflags_mask = TF_MASK \| AC_MASK \| ID_MASK \| IF_MASK \| IOPL_MASK \| RF_MASK \| NT_MASK;
3149	if (shift == 0)
3150	eflags_mask &= 0xffff;
3151	load_eflags(new_eflags, eflags_mask);
3152	env->hflags2 &= ~HF2_NMI_MASK;
3153	#ifdef VBOX
3154	if (fVME)
3155	{
3156	if (new_eflags & IF_MASK)
3157	env->eflags \|= VIF_MASK;
3158	else
3159	env->eflags &= ~VIF_MASK;
3160	}
3161	#endif /* VBOX */
3162	}
3163
3164	static inline void validate_seg(int seg_reg, int cpl)
3165	{
3166	int dpl;
3167	uint32_t e2;
3168
3169	/* XXX: on x86_64, we do not want to nullify FS and GS because
3170	they may still contain a valid base. I would be interested to
3171	know how a real x86_64 CPU behaves */
3172	if ((seg_reg == R_FS \|\| seg_reg == R_GS) &&
3173	(env->segs[seg_reg].selector & 0xfffc) == 0)
3174	return;
3175
3176	e2 = env->segs[seg_reg].flags;
3177	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3178	if (!(e2 & DESC_CS_MASK) \|\| !(e2 & DESC_C_MASK)) {
3179	/* data or non conforming code segment */
3180	if (dpl < cpl) {
3181	cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0);
3182	}
3183	}
3184	}
3185
3186	/* protected mode iret */
3187	static inline void helper_ret_protected(int shift, int is_iret, int addend)
3188	{
3189	uint32_t new_cs, new_eflags, new_ss;
3190	uint32_t new_es, new_ds, new_fs, new_gs;
3191	uint32_t e1, e2, ss_e1, ss_e2;
3192	int cpl, dpl, rpl, eflags_mask, iopl;
3193	target_ulong ssp, sp, new_eip, new_esp, sp_mask;
3194
3195	#ifdef VBOX /** @todo Why do we do this? */
3196	ss_e1 = ss_e2 = e1 = e2 = 0;
3197	#endif
3198
3199	#ifdef TARGET_X86_64
3200	if (shift == 2)
3201	sp_mask = -1;
3202	else
3203	#endif
3204	sp_mask = get_sp_mask(env->segs[R_SS].flags);
3205	sp = ESP;
3206	ssp = env->segs[R_SS].base;
3207	new_eflags = 0; /* avoid warning */
3208	#ifdef TARGET_X86_64
3209	if (shift == 2) {
3210	POPQ(sp, new_eip);
3211	POPQ(sp, new_cs);
3212	new_cs &= 0xffff;
3213	if (is_iret) {
3214	POPQ(sp, new_eflags);
3215	}
3216	} else
3217	#endif
3218	if (shift == 1) {
3219	/* 32 bits */
3220	POPL(ssp, sp, sp_mask, new_eip);
3221	POPL(ssp, sp, sp_mask, new_cs);
3222	new_cs &= 0xffff;
3223	if (is_iret) {
3224	POPL(ssp, sp, sp_mask, new_eflags);
3225	#define LOG_GROUP LOG_GROUP_REM
3226	#if defined(VBOX) && defined(DEBUG)
3227	Log(("iret: new CS %04X (old=%x)\n", new_cs, env->segs[R_CS].selector));
3228	Log(("iret: new EIP %08X\n", (uint32_t)new_eip));
3229	Log(("iret: new EFLAGS %08X\n", new_eflags));
3230	Log(("iret: EAX=%08x\n", (uint32_t)EAX));
3231	#endif
3232	if (new_eflags & VM_MASK)
3233	goto return_to_vm86;
3234	}
3235	#ifdef VBOX
3236	if ((new_cs & 0x3) == 1 && (env->state & CPU_RAW_RING0))
3237	{
3238	if ( !EMIsRawRing1Enabled(env->pVM)
3239	\|\| env->segs[R_CS].selector == (new_cs & 0xfffc))
3240	{
3241	Log(("RPL 1 -> new_cs %04X -> %04X\n", new_cs, new_cs & 0xfffc));
3242	new_cs = new_cs & 0xfffc;
3243	}
3244	else
3245	{
3246	/* Ugly assumption: assume a genuine switch to ring-1. */
3247	Log(("Genuine switch to ring-1 (iret)\n"));
3248	}
3249	}
3250	else if ((new_cs & 0x3) == 2 && (env->state & CPU_RAW_RING0) && EMIsRawRing1Enabled(env->pVM))
3251	{
3252	Log(("RPL 2 -> new_cs %04X -> %04X\n", new_cs, (new_cs & 0xfffc) \| 1));
3253	new_cs = (new_cs & 0xfffc) \| 1;
3254	}
3255	#endif
3256	} else {
3257	/* 16 bits */
3258	POPW(ssp, sp, sp_mask, new_eip);
3259	POPW(ssp, sp, sp_mask, new_cs);
3260	if (is_iret)
3261	POPW(ssp, sp, sp_mask, new_eflags);
3262	}
3263	LOG_PCALL("lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n",
3264	new_cs, new_eip, shift, addend);
3265	LOG_PCALL_STATE(env);
3266	if ((new_cs & 0xfffc) == 0)
3267	{
3268	#if defined(VBOX) && defined(DEBUG)
3269	Log(("new_cs & 0xfffc) == 0\n"));
3270	#endif
3271	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
3272	}
3273	if (load_segment(&e1, &e2, new_cs) != 0)
3274	{
3275	#if defined(VBOX) && defined(DEBUG)
3276	Log(("load_segment failed\n"));
3277	#endif
3278	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
3279	}
3280	if (!(e2 & DESC_S_MASK) \|\|
3281	!(e2 & DESC_CS_MASK))
3282	{
3283	#if defined(VBOX) && defined(DEBUG)
3284	Log(("e2 mask %08x\n", e2));
3285	#endif
3286	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
3287	}
3288	cpl = env->hflags & HF_CPL_MASK;
3289	rpl = new_cs & 3;
3290	if (rpl < cpl)
3291	{
3292	#if defined(VBOX) && defined(DEBUG)
3293	Log(("rpl < cpl (%d vs %d)\n", rpl, cpl));
3294	#endif
3295	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
3296	}
3297	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
3298
3299	if (e2 & DESC_C_MASK) {
3300	if (dpl > rpl)
3301	{
3302	#if defined(VBOX) && defined(DEBUG)
3303	Log(("dpl > rpl (%d vs %d)\n", dpl, rpl));
3304	#endif
3305	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
3306	}
3307	} else {
3308	if (dpl != rpl)
3309	{
3310	#if defined(VBOX) && defined(DEBUG)
3311	Log(("dpl != rpl (%d vs %d) e1=%x e2=%x\n", dpl, rpl, e1, e2));
3312	#endif
3313	raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
3314	}
3315	}
3316	if (!(e2 & DESC_P_MASK))
3317	{
3318	#if defined(VBOX) && defined(DEBUG)
3319	Log(("DESC_P_MASK e2=%08x\n", e2));
3320	#endif
3321	raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
3322	}
3323
3324	sp += addend;
3325	if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) \|\|
3326	((env->hflags & HF_CS64_MASK) && !is_iret))) {
3327	/* return to same privilege level */
3328	#ifdef VBOX
3329	if (!(e2 & DESC_A_MASK))
3330	e2 = set_segment_accessed(new_cs, e2);
3331	#endif
3332	cpu_x86_load_seg_cache(env, R_CS, new_cs,
3333	get_seg_base(e1, e2),
3334	get_seg_limit(e1, e2),
3335	e2);
3336	} else {
3337	/* return to different privilege level */
3338	#ifdef TARGET_X86_64
3339	if (shift == 2) {
3340	POPQ(sp, new_esp);
3341	POPQ(sp, new_ss);
3342	new_ss &= 0xffff;
3343	} else
3344	#endif
3345	if (shift == 1) {
3346	/* 32 bits */
3347	POPL(ssp, sp, sp_mask, new_esp);
3348	POPL(ssp, sp, sp_mask, new_ss);
3349	new_ss &= 0xffff;
3350	} else {
3351	/* 16 bits */
3352	POPW(ssp, sp, sp_mask, new_esp);
3353	POPW(ssp, sp, sp_mask, new_ss);
3354	}
3355	LOG_PCALL("new ss:esp=%04x:" TARGET_FMT_lx "\n",
3356	new_ss, new_esp);
3357	if ((new_ss & 0xfffc) == 0) {
3358	#ifdef TARGET_X86_64
3359	/* NULL ss is allowed in long mode if cpl != 3*/
3360	# ifndef VBOX
3361	/* XXX: test CS64 ? */
3362	if ((env->hflags & HF_LMA_MASK) && rpl != 3) {
3363	cpu_x86_load_seg_cache(env, R_SS, new_ss,
3364	0, 0xffffffff,
3365	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3366	DESC_S_MASK \| (rpl << DESC_DPL_SHIFT) \|
3367	DESC_W_MASK \| DESC_A_MASK);
3368	ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
3369	} else
3370	# else /* VBOX */
3371	if ((env->hflags & HF_LMA_MASK) && rpl != 3 && (e2 & DESC_L_MASK)) {
3372	if (!(e2 & DESC_A_MASK))
3373	e2 = set_segment_accessed(new_cs, e2);
3374	cpu_x86_load_seg_cache_with_clean_flags(env, R_SS, new_ss,
3375	0, 0xffffffff,
3376	DESC_INTEL_UNUSABLE \| (rpl << DESC_DPL_SHIFT) );
3377	ss_e2 = DESC_B_MASK; /* not really used */
3378	} else
3379	# endif
3380	#endif
3381	{
3382	#if defined(VBOX) && defined(DEBUG)
3383	Log(("NULL ss, rpl=%d\n", rpl));
3384	#endif
3385	raise_exception_err(EXCP0D_GPF, 0);
3386	}
3387	} else {
3388	if ((new_ss & 3) != rpl)
3389	{
3390	#if defined(VBOX) && defined(DEBUG)
3391	Log(("new_ss=%x != rpl=%d\n", new_ss, rpl));
3392	#endif
3393	raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
3394	}
3395	if (load_segment(&ss_e1, &ss_e2, new_ss) != 0)
3396	{
3397	#if defined(VBOX) && defined(DEBUG)
3398	Log(("new_ss=%x load error\n", new_ss));
3399	#endif
3400	raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
3401	}
3402	if (!(ss_e2 & DESC_S_MASK) \|\|
3403	(ss_e2 & DESC_CS_MASK) \|\|
3404	!(ss_e2 & DESC_W_MASK))
3405	{
3406	#if defined(VBOX) && defined(DEBUG)
3407	Log(("new_ss=%x ss_e2=%#x bad type\n", new_ss, ss_e2));
3408	#endif
3409	raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
3410	}
3411	dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
3412	if (dpl != rpl)
3413	{
3414	#if defined(VBOX) && defined(DEBUG)
3415	Log(("SS.dpl=%u != rpl=%u\n", dpl, rpl));
3416	#endif
3417	raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
3418	}
3419	if (!(ss_e2 & DESC_P_MASK))
3420	{
3421	#if defined(VBOX) && defined(DEBUG)
3422	Log(("new_ss=%#x #NP\n", new_ss));
3423	#endif
3424	raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
3425	}
3426	#ifdef VBOX
3427	if (!(e2 & DESC_A_MASK))
3428	e2 = set_segment_accessed(new_cs, e2);
3429	if (!(ss_e2 & DESC_A_MASK))
3430	ss_e2 = set_segment_accessed(new_ss, ss_e2);
3431	#endif
3432	cpu_x86_load_seg_cache(env, R_SS, new_ss,
3433	get_seg_base(ss_e1, ss_e2),
3434	get_seg_limit(ss_e1, ss_e2),
3435	ss_e2);
3436	}
3437
3438	cpu_x86_load_seg_cache(env, R_CS, new_cs,
3439	get_seg_base(e1, e2),
3440	get_seg_limit(e1, e2),
3441	e2);
3442	cpu_x86_set_cpl(env, rpl);
3443	sp = new_esp;
3444	#ifdef TARGET_X86_64
3445	if (env->hflags & HF_CS64_MASK)
3446	sp_mask = -1;
3447	else
3448	#endif
3449	sp_mask = get_sp_mask(ss_e2);
3450
3451	/* validate data segments */
3452	validate_seg(R_ES, rpl);
3453	validate_seg(R_DS, rpl);
3454	validate_seg(R_FS, rpl);
3455	validate_seg(R_GS, rpl);
3456
3457	sp += addend;
3458	}
3459	SET_ESP(sp, sp_mask);
3460	env->eip = new_eip;
3461	if (is_iret) {
3462	/* NOTE: 'cpl' is the _old_ CPL */
3463	eflags_mask = TF_MASK \| AC_MASK \| ID_MASK \| RF_MASK \| NT_MASK;
3464	if (cpl == 0)
3465	#ifdef VBOX
3466	eflags_mask \|= IOPL_MASK \| VIF_MASK \| VIP_MASK;
3467	#else
3468	eflags_mask \|= IOPL_MASK;
3469	#endif
3470	iopl = (env->eflags >> IOPL_SHIFT) & 3;
3471	if (cpl <= iopl)
3472	eflags_mask \|= IF_MASK;
3473	if (shift == 0)
3474	eflags_mask &= 0xffff;
3475	load_eflags(new_eflags, eflags_mask);
3476	}
3477	return;
3478
3479	return_to_vm86:
3480	POPL(ssp, sp, sp_mask, new_esp);
3481	POPL(ssp, sp, sp_mask, new_ss);
3482	POPL(ssp, sp, sp_mask, new_es);
3483	POPL(ssp, sp, sp_mask, new_ds);
3484	POPL(ssp, sp, sp_mask, new_fs);
3485	POPL(ssp, sp, sp_mask, new_gs);
3486
3487	/* modify processor state */
3488	load_eflags(new_eflags, TF_MASK \| AC_MASK \| ID_MASK \|
3489	IF_MASK \| IOPL_MASK \| VM_MASK \| NT_MASK \| VIF_MASK \| VIP_MASK);
3490	load_seg_vm(R_CS, new_cs & 0xffff);
3491	cpu_x86_set_cpl(env, 3);
3492	load_seg_vm(R_SS, new_ss & 0xffff);
3493	load_seg_vm(R_ES, new_es & 0xffff);
3494	load_seg_vm(R_DS, new_ds & 0xffff);
3495	load_seg_vm(R_FS, new_fs & 0xffff);
3496	load_seg_vm(R_GS, new_gs & 0xffff);
3497
3498	env->eip = new_eip & 0xffff;
3499	ESP = new_esp;
3500	}
3501
3502	void helper_iret_protected(int shift, int next_eip)
3503	{
3504	int tss_selector, type;
3505	uint32_t e1, e2;
3506
3507	#ifdef VBOX
3508	Log(("iret (shift=%d new_eip=%#x)\n", shift, next_eip));
3509	e1 = e2 = 0; /** @todo Why do we do this? */
3510	remR3TrapClear(env->pVM);
3511	#endif
3512
3513	/* specific case for TSS */
3514	if (env->eflags & NT_MASK) {
3515	#ifdef TARGET_X86_64
3516	if (env->hflags & HF_LMA_MASK)
3517	{
3518	#if defined(VBOX) && defined(DEBUG)
3519	Log(("eflags.NT=1 on iret in long mode\n"));
3520	#endif
3521	raise_exception_err(EXCP0D_GPF, 0);
3522	}
3523	#endif
3524	tss_selector = lduw_kernel(env->tr.base + 0);
3525	if (tss_selector & 4)
3526	raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
3527	if (load_segment(&e1, &e2, tss_selector) != 0)
3528	raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
3529	type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
3530	/* NOTE: we check both segment and busy TSS */
3531	if (type != 3)
3532	raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
3533	switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip);
3534	} else {
3535	helper_ret_protected(shift, 1, 0);
3536	}
3537	env->hflags2 &= ~HF2_NMI_MASK;
3538	}
3539
3540	void helper_lret_protected(int shift, int addend)
3541	{
3542	helper_ret_protected(shift, 0, addend);
3543	}
3544
3545	void helper_sysenter(void)
3546	{
3547	if (env->sysenter_cs == 0) {
3548	raise_exception_err(EXCP0D_GPF, 0);
3549	}
3550	env->eflags &= ~(VM_MASK \| IF_MASK \| RF_MASK);
3551	cpu_x86_set_cpl(env, 0);
3552
3553	#ifdef TARGET_X86_64
3554	if (env->hflags & HF_LMA_MASK) {
3555	cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
3556	0, 0xffffffff,
3557	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3558	DESC_S_MASK \|
3559	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK \| DESC_L_MASK);
3560	} else
3561	#endif
3562	{
3563	cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
3564	0, 0xffffffff,
3565	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3566	DESC_S_MASK \|
3567	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK);
3568	}
3569	cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc,
3570	0, 0xffffffff,
3571	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3572	DESC_S_MASK \|
3573	DESC_W_MASK \| DESC_A_MASK);
3574	ESP = env->sysenter_esp;
3575	EIP = env->sysenter_eip;
3576	}
3577
3578	void helper_sysexit(int dflag)
3579	{
3580	int cpl;
3581
3582	cpl = env->hflags & HF_CPL_MASK;
3583	if (env->sysenter_cs == 0 \|\| cpl != 0) {
3584	raise_exception_err(EXCP0D_GPF, 0);
3585	}
3586	cpu_x86_set_cpl(env, 3);
3587	#ifdef TARGET_X86_64
3588	if (dflag == 2) {
3589	cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 32) & 0xfffc) \| 3,
3590	0, 0xffffffff,
3591	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3592	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
3593	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK \| DESC_L_MASK);
3594	cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 40) & 0xfffc) \| 3,
3595	0, 0xffffffff,
3596	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3597	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
3598	DESC_W_MASK \| DESC_A_MASK);
3599	} else
3600	#endif
3601	{
3602	cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) \| 3,
3603	0, 0xffffffff,
3604	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3605	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
3606	DESC_CS_MASK \| DESC_R_MASK \| DESC_A_MASK);
3607	cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) \| 3,
3608	0, 0xffffffff,
3609	DESC_G_MASK \| DESC_B_MASK \| DESC_P_MASK \|
3610	DESC_S_MASK \| (3 << DESC_DPL_SHIFT) \|
3611	DESC_W_MASK \| DESC_A_MASK);
3612	}
3613	ESP = ECX;
3614	EIP = EDX;
3615	}
3616
3617	#if defined(CONFIG_USER_ONLY)
3618	target_ulong helper_read_crN(int reg)
3619	{
3620	return 0;
3621	}
3622
3623	void helper_write_crN(int reg, target_ulong t0)
3624	{
3625	}
3626
3627	void helper_movl_drN_T0(int reg, target_ulong t0)
3628	{
3629	}
3630	#else
3631	target_ulong helper_read_crN(int reg)
3632	{
3633	target_ulong val;
3634
3635	helper_svm_check_intercept_param(SVM_EXIT_READ_CR0 + reg, 0);
3636	switch(reg) {
3637	default:
3638	val = env->cr[reg];
3639	break;
3640	case 8:
3641	if (!(env->hflags2 & HF2_VINTR_MASK)) {
3642	#ifndef VBOX
3643	val = cpu_get_apic_tpr(env->apic_state);
3644	#else /* VBOX */
3645	val = cpu_get_apic_tpr(env);
3646	#endif /* VBOX */
3647	} else {
3648	val = env->v_tpr;
3649	}
3650	break;
3651	}
3652	return val;
3653	}
3654
3655	void helper_write_crN(int reg, target_ulong t0)
3656	{
3657	helper_svm_check_intercept_param(SVM_EXIT_WRITE_CR0 + reg, 0);
3658	switch(reg) {
3659	case 0:
3660	cpu_x86_update_cr0(env, t0);
3661	break;
3662	case 3:
3663	cpu_x86_update_cr3(env, t0);
3664	break;
3665	case 4:
3666	cpu_x86_update_cr4(env, t0);
3667	break;
3668	case 8:
3669	if (!(env->hflags2 & HF2_VINTR_MASK)) {
3670	#ifndef VBOX
3671	cpu_set_apic_tpr(env->apic_state, t0);
3672	#else /* VBOX */
3673	cpu_set_apic_tpr(env, t0);
3674	#endif /* VBOX */
3675	}
3676	env->v_tpr = t0 & 0x0f;
3677	break;
3678	default:
3679	env->cr[reg] = t0;
3680	break;
3681	}
3682	}
3683
3684	void helper_movl_drN_T0(int reg, target_ulong t0)
3685	{
3686	int i;
3687
3688	if (reg < 4) {
3689	hw_breakpoint_remove(env, reg);
3690	env->dr[reg] = t0;
3691	hw_breakpoint_insert(env, reg);
3692	# ifndef VBOX
3693	} else if (reg == 7) {
3694	# else
3695	} else if (reg == 7 \|\| reg == 5) { /* (DR5 is an alias for DR7.) */
3696	if (t0 & X86_DR7_MBZ_MASK)
3697	raise_exception_err(EXCP0D_GPF, 0);
3698	t0 \|= X86_DR7_RA1_MASK;
3699	t0 &= ~X86_DR7_RAZ_MASK;
3700	# endif
3701	for (i = 0; i < 4; i++)
3702	hw_breakpoint_remove(env, i);
3703	env->dr[7] = t0;
3704	for (i = 0; i < 4; i++)
3705	hw_breakpoint_insert(env, i);
3706	} else {
3707	# ifndef VBOX
3708	env->dr[reg] = t0;
3709	# else
3710	if (t0 & X86_DR6_MBZ_MASK)
3711	raise_exception_err(EXCP0D_GPF, 0);
3712	t0 \|= X86_DR6_RA1_MASK;
3713	t0 &= ~X86_DR6_RAZ_MASK;
3714	env->dr[6] = t0; /* (DR4 is an alias for DR6.) */
3715	# endif
3716	}
3717	}
3718	#endif
3719
3720	void helper_lmsw(target_ulong t0)
3721	{
3722	/* only 4 lower bits of CR0 are modified. PE cannot be set to zero
3723	if already set to one. */
3724	t0 = (env->cr[0] & ~0xe) \| (t0 & 0xf);
3725	helper_write_crN(0, t0);
3726	}
3727
3728	void helper_clts(void)
3729	{
3730	env->cr[0] &= ~CR0_TS_MASK;
3731	env->hflags &= ~HF_TS_MASK;
3732	}
3733
3734	void helper_invlpg(target_ulong addr)
3735	{
3736	helper_svm_check_intercept_param(SVM_EXIT_INVLPG, 0);
3737	tlb_flush_page(env, addr);
3738	}
3739
3740	void helper_rdtsc(void)
3741	{
3742	uint64_t val;
3743
3744	if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
3745	raise_exception(EXCP0D_GPF);
3746	}
3747	helper_svm_check_intercept_param(SVM_EXIT_RDTSC, 0);
3748
3749	val = cpu_get_tsc(env) + env->tsc_offset;
3750	EAX = (uint32_t)(val);
3751	EDX = (uint32_t)(val >> 32);
3752	}
3753
3754	void helper_rdtscp(void)
3755	{
3756	helper_rdtsc();
3757	#ifndef VBOX
3758	ECX = (uint32_t)(env->tsc_aux);
3759	#else /* VBOX */
3760	uint64_t val;
3761	if (cpu_rdmsr(env, MSR_K8_TSC_AUX, &val) == 0)
3762	ECX = (uint32_t)(val);
3763	else
3764	ECX = 0;
3765	#endif /* VBOX */
3766	}
3767
3768	void helper_rdpmc(void)
3769	{
3770	#ifdef VBOX
3771	/* If X86_CR4_PCE is not set, then CPL must be zero. */
3772	if (!(env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
3773	raise_exception(EXCP0D_GPF);
3774	}
3775	/* Just return zero here; rather tricky to properly emulate this, especially as the specs are a mess. */
3776	EAX = 0;
3777	EDX = 0;
3778	#else /* !VBOX */
3779	if ((env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
3780	raise_exception(EXCP0D_GPF);
3781	}
3782	helper_svm_check_intercept_param(SVM_EXIT_RDPMC, 0);
3783
3784	/* currently unimplemented */
3785	raise_exception_err(EXCP06_ILLOP, 0);
3786	#endif /* !VBOX */
3787	}
3788
3789	#if defined(CONFIG_USER_ONLY)
3790	void helper_wrmsr(void)
3791	{
3792	}
3793
3794	void helper_rdmsr(void)
3795	{
3796	}
3797	#else
3798	void helper_wrmsr(void)
3799	{
3800	uint64_t val;
3801
3802	helper_svm_check_intercept_param(SVM_EXIT_MSR, 1);
3803
3804	val = ((uint32_t)EAX) \| ((uint64_t)((uint32_t)EDX) << 32);
3805
3806	switch((uint32_t)ECX) {
3807	case MSR_IA32_SYSENTER_CS:
3808	env->sysenter_cs = val & 0xffff;
3809	break;
3810	case MSR_IA32_SYSENTER_ESP:
3811	env->sysenter_esp = val;
3812	break;
3813	case MSR_IA32_SYSENTER_EIP:
3814	env->sysenter_eip = val;
3815	break;
3816	case MSR_IA32_APICBASE:
3817	# ifndef VBOX /* The CPUMSetGuestMsr call below does this now. */
3818	cpu_set_apic_base(env->apic_state, val);
3819	# endif
3820	break;
3821	case MSR_EFER:
3822	{
3823	uint64_t update_mask;
3824	update_mask = 0;
3825	if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
3826	update_mask \|= MSR_EFER_SCE;
3827	if (env->cpuid_ext2_features & CPUID_EXT2_LM)
3828	update_mask \|= MSR_EFER_LME;
3829	if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
3830	update_mask \|= MSR_EFER_FFXSR;
3831	if (env->cpuid_ext2_features & CPUID_EXT2_NX)
3832	update_mask \|= MSR_EFER_NXE;
3833	if (env->cpuid_ext3_features & CPUID_EXT3_SVM)
3834	update_mask \|= MSR_EFER_SVME;
3835	if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
3836	update_mask \|= MSR_EFER_FFXSR;
3837	cpu_load_efer(env, (env->efer & ~update_mask) \|
3838	(val & update_mask));
3839	}
3840	break;
3841	case MSR_STAR:
3842	env->star = val;
3843	break;
3844	case MSR_PAT:
3845	env->pat = val;
3846	break;
3847	case MSR_VM_HSAVE_PA:
3848	env->vm_hsave = val;
3849	break;
3850	#ifdef TARGET_X86_64
3851	case MSR_LSTAR:
3852	env->lstar = val;
3853	break;
3854	case MSR_CSTAR:
3855	env->cstar = val;
3856	break;
3857	case MSR_FMASK:
3858	env->fmask = val;
3859	break;
3860	case MSR_FSBASE:
3861	env->segs[R_FS].base = val;
3862	break;
3863	case MSR_GSBASE:
3864	env->segs[R_GS].base = val;
3865	break;
3866	case MSR_KERNELGSBASE:
3867	env->kernelgsbase = val;
3868	break;
3869	#endif
3870	# ifndef VBOX
3871	case MSR_MTRRphysBase(0):
3872	case MSR_MTRRphysBase(1):
3873	case MSR_MTRRphysBase(2):
3874	case MSR_MTRRphysBase(3):
3875	case MSR_MTRRphysBase(4):
3876	case MSR_MTRRphysBase(5):
3877	case MSR_MTRRphysBase(6):
3878	case MSR_MTRRphysBase(7):
3879	env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base = val;
3880	break;
3881	case MSR_MTRRphysMask(0):
3882	case MSR_MTRRphysMask(1):
3883	case MSR_MTRRphysMask(2):
3884	case MSR_MTRRphysMask(3):
3885	case MSR_MTRRphysMask(4):
3886	case MSR_MTRRphysMask(5):
3887	case MSR_MTRRphysMask(6):
3888	case MSR_MTRRphysMask(7):
3889	env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask = val;
3890	break;
3891	case MSR_MTRRfix64K_00000:
3892	env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix64K_00000] = val;
3893	break;
3894	case MSR_MTRRfix16K_80000:
3895	case MSR_MTRRfix16K_A0000:
3896	env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1] = val;
3897	break;
3898	case MSR_MTRRfix4K_C0000:
3899	case MSR_MTRRfix4K_C8000:
3900	case MSR_MTRRfix4K_D0000:
3901	case MSR_MTRRfix4K_D8000:
3902	case MSR_MTRRfix4K_E0000:
3903	case MSR_MTRRfix4K_E8000:
3904	case MSR_MTRRfix4K_F0000:
3905	case MSR_MTRRfix4K_F8000:
3906	env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3] = val;
3907	break;
3908	case MSR_MTRRdefType:
3909	env->mtrr_deftype = val;
3910	break;
3911	case MSR_MCG_STATUS:
3912	env->mcg_status = val;
3913	break;
3914	case MSR_MCG_CTL:
3915	if ((env->mcg_cap & MCG_CTL_P)
3916	&& (val == 0 \|\| val == ~(uint64_t)0))
3917	env->mcg_ctl = val;
3918	break;
3919	case MSR_TSC_AUX:
3920	env->tsc_aux = val;
3921	break;
3922	# endif /* !VBOX */
3923	default:
3924	# ifndef VBOX
3925	if ((uint32_t)ECX >= MSR_MC0_CTL
3926	&& (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) {
3927	uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL;
3928	if ((offset & 0x3) != 0
3929	\|\| (val == 0 \|\| val == ~(uint64_t)0))
3930	env->mce_banks[offset] = val;
3931	break;
3932	}
3933	/* XXX: exception ? */
3934	# endif
3935	break;
3936	}
3937
3938	# ifdef VBOX
3939	/* call CPUM. */
3940	if (cpu_wrmsr(env, (uint32_t)ECX, val) != 0)
3941	{
3942	/** @todo be a brave man and raise a \#GP(0) here as we should... */
3943	}
3944	# endif
3945	}
3946
3947	void helper_rdmsr(void)
3948	{
3949	uint64_t val;
3950
3951	helper_svm_check_intercept_param(SVM_EXIT_MSR, 0);
3952
3953	switch((uint32_t)ECX) {
3954	case MSR_IA32_SYSENTER_CS:
3955	val = env->sysenter_cs;
3956	break;
3957	case MSR_IA32_SYSENTER_ESP:
3958	val = env->sysenter_esp;
3959	break;
3960	case MSR_IA32_SYSENTER_EIP:
3961	val = env->sysenter_eip;
3962	break;
3963	case MSR_IA32_APICBASE:
3964	#ifndef VBOX
3965	val = cpu_get_apic_base(env->apic_state);
3966	#else /* VBOX */
3967	val = cpu_get_apic_base(env);
3968	#endif /* VBOX */
3969	break;
3970	case MSR_EFER:
3971	val = env->efer;
3972	break;
3973	case MSR_STAR:
3974	val = env->star;
3975	break;
3976	case MSR_PAT:
3977	val = env->pat;
3978	break;
3979	case MSR_VM_HSAVE_PA:
3980	val = env->vm_hsave;
3981	break;
3982	# ifndef VBOX /* forward to CPUMQueryGuestMsr. */
3983	case MSR_IA32_PERF_STATUS:
3984	/* tsc_increment_by_tick */
3985	val = 1000ULL;
3986	/* CPU multiplier */
3987	val \|= (((uint64_t)4ULL) << 40);
3988	break;
3989	# endif /* !VBOX */
3990	#ifdef TARGET_X86_64
3991	case MSR_LSTAR:
3992	val = env->lstar;
3993	break;
3994	case MSR_CSTAR:
3995	val = env->cstar;
3996	break;
3997	case MSR_FMASK:
3998	val = env->fmask;
3999	break;
4000	case MSR_FSBASE:
4001	val = env->segs[R_FS].base;
4002	break;
4003	case MSR_GSBASE:
4004	val = env->segs[R_GS].base;
4005	break;
4006	case MSR_KERNELGSBASE:
4007	val = env->kernelgsbase;
4008	break;
4009	# ifndef VBOX
4010	case MSR_TSC_AUX:
4011	val = env->tsc_aux;
4012	break;
4013	# endif /!VBOX/
4014	#endif
4015	# ifndef VBOX
4016	case MSR_MTRRphysBase(0):
4017	case MSR_MTRRphysBase(1):
4018	case MSR_MTRRphysBase(2):
4019	case MSR_MTRRphysBase(3):
4020	case MSR_MTRRphysBase(4):
4021	case MSR_MTRRphysBase(5):
4022	case MSR_MTRRphysBase(6):
4023	case MSR_MTRRphysBase(7):
4024	val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base;
4025	break;
4026	case MSR_MTRRphysMask(0):
4027	case MSR_MTRRphysMask(1):
4028	case MSR_MTRRphysMask(2):
4029	case MSR_MTRRphysMask(3):
4030	case MSR_MTRRphysMask(4):
4031	case MSR_MTRRphysMask(5):
4032	case MSR_MTRRphysMask(6):
4033	case MSR_MTRRphysMask(7):
4034	val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask;
4035	break;
4036	case MSR_MTRRfix64K_00000:
4037	val = env->mtrr_fixed[0];
4038	break;
4039	case MSR_MTRRfix16K_80000:
4040	case MSR_MTRRfix16K_A0000:
4041	val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1];
4042	break;
4043	case MSR_MTRRfix4K_C0000:
4044	case MSR_MTRRfix4K_C8000:
4045	case MSR_MTRRfix4K_D0000:
4046	case MSR_MTRRfix4K_D8000:
4047	case MSR_MTRRfix4K_E0000:
4048	case MSR_MTRRfix4K_E8000:
4049	case MSR_MTRRfix4K_F0000:
4050	case MSR_MTRRfix4K_F8000:
4051	val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3];
4052	break;
4053	case MSR_MTRRdefType:
4054	val = env->mtrr_deftype;
4055	break;
4056	case MSR_MTRRcap:
4057	if (env->cpuid_features & CPUID_MTRR)
4058	val = MSR_MTRRcap_VCNT \| MSR_MTRRcap_FIXRANGE_SUPPORT \| MSR_MTRRcap_WC_SUPPORTED;
4059	else
4060	/* XXX: exception ? */
4061	val = 0;
4062	break;
4063	case MSR_MCG_CAP:
4064	val = env->mcg_cap;
4065	break;
4066	case MSR_MCG_CTL:
4067	if (env->mcg_cap & MCG_CTL_P)
4068	val = env->mcg_ctl;
4069	else
4070	val = 0;
4071	break;
4072	case MSR_MCG_STATUS:
4073	val = env->mcg_status;
4074	break;
4075	# endif /* !VBOX */
4076	default:
4077	# ifndef VBOX
4078	if ((uint32_t)ECX >= MSR_MC0_CTL
4079	&& (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) {
4080	uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL;
4081	val = env->mce_banks[offset];
4082	break;
4083	}
4084	/* XXX: exception ? */
4085	val = 0;
4086	# else /* VBOX */
4087	if (cpu_rdmsr(env, (uint32_t)ECX, &val) != 0)
4088	{
4089	/** @todo be a brave man and raise a \#GP(0) here as we should... */
4090	val = 0;
4091	}
4092	# endif /* VBOX */
4093	break;
4094	}
4095	EAX = (uint32_t)(val);
4096	EDX = (uint32_t)(val >> 32);
4097
4098	# ifdef VBOX_STRICT
4099	if ((uint32_t)ECX != MSR_IA32_TSC) {
4100	if (cpu_rdmsr(env, (uint32_t)ECX, &val) != 0)
4101	val = 0;
4102	AssertMsg(val == RT_MAKE_U64(EAX, EDX), ("idMsr=%#x val=%#llx eax:edx=%#llx\n", (uint32_t)ECX, val, RT_MAKE_U64(EAX, EDX)));
4103	}
4104	# endif
4105	}
4106	#endif
4107
4108	target_ulong helper_lsl(target_ulong selector1)
4109	{
4110	unsigned int limit;
4111	uint32_t e1, e2, eflags, selector;
4112	int rpl, dpl, cpl, type;
4113
4114	selector = selector1 & 0xffff;
4115	eflags = helper_cc_compute_all(CC_OP);
4116	if ((selector & 0xfffc) == 0)
4117	goto fail;
4118	if (load_segment(&e1, &e2, selector) != 0)
4119	goto fail;
4120	rpl = selector & 3;
4121	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
4122	cpl = env->hflags & HF_CPL_MASK;
4123	if (e2 & DESC_S_MASK) {
4124	if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
4125	/* conforming */
4126	} else {
4127	if (dpl < cpl \|\| dpl < rpl)
4128	goto fail;
4129	}
4130	} else {
4131	type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
4132	switch(type) {
4133	case 1:
4134	case 2:
4135	case 3:
4136	case 9:
4137	case 11:
4138	break;
4139	default:
4140	goto fail;
4141	}
4142	if (dpl < cpl \|\| dpl < rpl) {
4143	fail:
4144	CC_SRC = eflags & ~CC_Z;
4145	return 0;
4146	}
4147	}
4148	limit = get_seg_limit(e1, e2);
4149	CC_SRC = eflags \| CC_Z;
4150	return limit;
4151	}
4152
4153	target_ulong helper_lar(target_ulong selector1)
4154	{
4155	uint32_t e1, e2, eflags, selector;
4156	int rpl, dpl, cpl, type;
4157
4158	selector = selector1 & 0xffff;
4159	eflags = helper_cc_compute_all(CC_OP);
4160	if ((selector & 0xfffc) == 0)
4161	goto fail;
4162	if (load_segment(&e1, &e2, selector) != 0)
4163	goto fail;
4164	rpl = selector & 3;
4165	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
4166	cpl = env->hflags & HF_CPL_MASK;
4167	if (e2 & DESC_S_MASK) {
4168	if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
4169	/* conforming */
4170	} else {
4171	if (dpl < cpl \|\| dpl < rpl)
4172	goto fail;
4173	}
4174	} else {
4175	type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
4176	switch(type) {
4177	case 1:
4178	case 2:
4179	case 3:
4180	case 4:
4181	case 5:
4182	case 9:
4183	case 11:
4184	case 12:
4185	break;
4186	default:
4187	goto fail;
4188	}
4189	if (dpl < cpl \|\| dpl < rpl) {
4190	fail:
4191	CC_SRC = eflags & ~CC_Z;
4192	return 0;
4193	}
4194	}
4195	CC_SRC = eflags \| CC_Z;
4196	#ifdef VBOX /* AMD says 0x00ffff00, while intel says 0x00fxff00. Bochs and IEM does like AMD says (x=f). */
4197	return e2 & 0x00ffff00;
4198	#else
4199	return e2 & 0x00f0ff00;
4200	#endif
4201	}
4202
4203	void helper_verr(target_ulong selector1)
4204	{
4205	uint32_t e1, e2, eflags, selector;
4206	int rpl, dpl, cpl;
4207
4208	selector = selector1 & 0xffff;
4209	eflags = helper_cc_compute_all(CC_OP);
4210	if ((selector & 0xfffc) == 0)
4211	goto fail;
4212	if (load_segment(&e1, &e2, selector) != 0)
4213	goto fail;
4214	if (!(e2 & DESC_S_MASK))
4215	goto fail;
4216	rpl = selector & 3;
4217	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
4218	cpl = env->hflags & HF_CPL_MASK;
4219	if (e2 & DESC_CS_MASK) {
4220	if (!(e2 & DESC_R_MASK))
4221	goto fail;
4222	if (!(e2 & DESC_C_MASK)) {
4223	if (dpl < cpl \|\| dpl < rpl)
4224	goto fail;
4225	}
4226	} else {
4227	if (dpl < cpl \|\| dpl < rpl) {
4228	fail:
4229	CC_SRC = eflags & ~CC_Z;
4230	return;
4231	}
4232	}
4233	CC_SRC = eflags \| CC_Z;
4234	}
4235
4236	void helper_verw(target_ulong selector1)
4237	{
4238	uint32_t e1, e2, eflags, selector;
4239	int rpl, dpl, cpl;
4240
4241	selector = selector1 & 0xffff;
4242	eflags = helper_cc_compute_all(CC_OP);
4243	if ((selector & 0xfffc) == 0)
4244	goto fail;
4245	if (load_segment(&e1, &e2, selector) != 0)
4246	goto fail;
4247	if (!(e2 & DESC_S_MASK))
4248	goto fail;
4249	rpl = selector & 3;
4250	dpl = (e2 >> DESC_DPL_SHIFT) & 3;
4251	cpl = env->hflags & HF_CPL_MASK;
4252	if (e2 & DESC_CS_MASK) {
4253	goto fail;
4254	} else {
4255	if (dpl < cpl \|\| dpl < rpl)
4256	goto fail;
4257	if (!(e2 & DESC_W_MASK)) {
4258	fail:
4259	CC_SRC = eflags & ~CC_Z;
4260	return;
4261	}
4262	}
4263	CC_SRC = eflags \| CC_Z;
4264	}
4265
4266	/* x87 FPU helpers */
4267
4268	static void fpu_set_exception(int mask)
4269	{
4270	env->fpus \|= mask;
4271	if (env->fpus & (~env->fpuc & FPUC_EM))
4272	env->fpus \|= FPUS_SE \| FPUS_B;
4273	}
4274
4275	static inline CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b)
4276	{
4277	if (b == 0.0)
4278	fpu_set_exception(FPUS_ZE);
4279	return a / b;
4280	}
4281
4282	static void fpu_raise_exception(void)
4283	{
4284	if (env->cr[0] & CR0_NE_MASK) {
4285	raise_exception(EXCP10_COPR);
4286	}
4287	#if !defined(CONFIG_USER_ONLY)
4288	else {
4289	cpu_set_ferr(env);
4290	}
4291	#endif
4292	}
4293
4294	void helper_flds_FT0(uint32_t val)
4295	{
4296	union {
4297	float32 f;
4298	uint32_t i;
4299	} u;
4300	u.i = val;
4301	FT0 = float32_to_floatx(u.f, &env->fp_status);
4302	}
4303
4304	void helper_fldl_FT0(uint64_t val)
4305	{
4306	union {
4307	float64 f;
4308	uint64_t i;
4309	} u;
4310	u.i = val;
4311	FT0 = float64_to_floatx(u.f, &env->fp_status);
4312	}
4313
4314	void helper_fildl_FT0(int32_t val)
4315	{
4316	FT0 = int32_to_floatx(val, &env->fp_status);
4317	}
4318
4319	void helper_flds_ST0(uint32_t val)
4320	{
4321	int new_fpstt;
4322	union {
4323	float32 f;
4324	uint32_t i;
4325	} u;
4326	new_fpstt = (env->fpstt - 1) & 7;
4327	u.i = val;
4328	env->fpregs[new_fpstt].d = float32_to_floatx(u.f, &env->fp_status);
4329	env->fpstt = new_fpstt;
4330	env->fptags[new_fpstt] = 0; /* validate stack entry */
4331	}
4332
4333	void helper_fldl_ST0(uint64_t val)
4334	{
4335	int new_fpstt;
4336	union {
4337	float64 f;
4338	uint64_t i;
4339	} u;
4340	new_fpstt = (env->fpstt - 1) & 7;
4341	u.i = val;
4342	env->fpregs[new_fpstt].d = float64_to_floatx(u.f, &env->fp_status);
4343	env->fpstt = new_fpstt;
4344	env->fptags[new_fpstt] = 0; /* validate stack entry */
4345	}
4346
4347	void helper_fildl_ST0(int32_t val)
4348	{
4349	int new_fpstt;
4350	new_fpstt = (env->fpstt - 1) & 7;
4351	env->fpregs[new_fpstt].d = int32_to_floatx(val, &env->fp_status);
4352	env->fpstt = new_fpstt;
4353	env->fptags[new_fpstt] = 0; /* validate stack entry */
4354	}
4355
4356	void helper_fildll_ST0(int64_t val)
4357	{
4358	int new_fpstt;
4359	new_fpstt = (env->fpstt - 1) & 7;
4360	env->fpregs[new_fpstt].d = int64_to_floatx(val, &env->fp_status);
4361	env->fpstt = new_fpstt;
4362	env->fptags[new_fpstt] = 0; /* validate stack entry */
4363	}
4364
4365	#ifndef VBOX
4366	uint32_t helper_fsts_ST0(void)
4367	#else
4368	RTCCUINTREG helper_fsts_ST0(void)
4369	#endif
4370	{
4371	union {
4372	float32 f;
4373	uint32_t i;
4374	} u;
4375	u.f = floatx_to_float32(ST0, &env->fp_status);
4376	return u.i;
4377	}
4378
4379	uint64_t helper_fstl_ST0(void)
4380	{
4381	union {
4382	float64 f;
4383	uint64_t i;
4384	} u;
4385	u.f = floatx_to_float64(ST0, &env->fp_status);
4386	return u.i;
4387	}
4388
4389	#ifndef VBOX
4390	int32_t helper_fist_ST0(void)
4391	#else
4392	RTCCINTREG helper_fist_ST0(void)
4393	#endif
4394	{
4395	int32_t val;
4396	val = floatx_to_int32(ST0, &env->fp_status);
4397	if (val != (int16_t)val)
4398	val = -32768;
4399	return val;
4400	}
4401
4402	#ifndef VBOX
4403	int32_t helper_fistl_ST0(void)
4404	#else
4405	RTCCINTREG helper_fistl_ST0(void)
4406	#endif
4407	{
4408	int32_t val;
4409	val = floatx_to_int32(ST0, &env->fp_status);
4410	return val;
4411	}
4412
4413	int64_t helper_fistll_ST0(void)
4414	{
4415	int64_t val;
4416	val = floatx_to_int64(ST0, &env->fp_status);
4417	return val;
4418	}
4419
4420	#ifndef VBOX
4421	int32_t helper_fistt_ST0(void)
4422	#else
4423	RTCCINTREG helper_fistt_ST0(void)
4424	#endif
4425	{
4426	int32_t val;
4427	val = floatx_to_int32_round_to_zero(ST0, &env->fp_status);
4428	if (val != (int16_t)val)
4429	val = -32768;
4430	return val;
4431	}
4432
4433	#ifndef VBOX
4434	int32_t helper_fisttl_ST0(void)
4435	#else
4436	RTCCINTREG helper_fisttl_ST0(void)
4437	#endif
4438	{
4439	int32_t val;
4440	val = floatx_to_int32_round_to_zero(ST0, &env->fp_status);
4441	return val;
4442	}
4443
4444	int64_t helper_fisttll_ST0(void)
4445	{
4446	int64_t val;
4447	val = floatx_to_int64_round_to_zero(ST0, &env->fp_status);
4448	return val;
4449	}
4450
4451	void helper_fldt_ST0(target_ulong ptr)
4452	{
4453	int new_fpstt;
4454	new_fpstt = (env->fpstt - 1) & 7;
4455	env->fpregs[new_fpstt].d = helper_fldt(ptr);
4456	env->fpstt = new_fpstt;
4457	env->fptags[new_fpstt] = 0; /* validate stack entry */
4458	}
4459
4460	void helper_fstt_ST0(target_ulong ptr)
4461	{
4462	helper_fstt(ST0, ptr);
4463	}
4464
4465	void helper_fpush(void)
4466	{
4467	fpush();
4468	}
4469
4470	void helper_fpop(void)
4471	{
4472	fpop();
4473	}
4474
4475	void helper_fdecstp(void)
4476	{
4477	env->fpstt = (env->fpstt - 1) & 7;
4478	env->fpus &= (~0x4700);
4479	}
4480
4481	void helper_fincstp(void)
4482	{
4483	env->fpstt = (env->fpstt + 1) & 7;
4484	env->fpus &= (~0x4700);
4485	}
4486
4487	/* FPU move */
4488
4489	void helper_ffree_STN(int st_index)
4490	{
4491	env->fptags[(env->fpstt + st_index) & 7] = 1;
4492	}
4493
4494	void helper_fmov_ST0_FT0(void)
4495	{
4496	ST0 = FT0;
4497	}
4498
4499	void helper_fmov_FT0_STN(int st_index)
4500	{
4501	FT0 = ST(st_index);
4502	}
4503
4504	void helper_fmov_ST0_STN(int st_index)
4505	{
4506	ST0 = ST(st_index);
4507	}
4508
4509	void helper_fmov_STN_ST0(int st_index)
4510	{
4511	ST(st_index) = ST0;
4512	}
4513
4514	void helper_fxchg_ST0_STN(int st_index)
4515	{
4516	CPU86_LDouble tmp;
4517	tmp = ST(st_index);
4518	ST(st_index) = ST0;
4519	ST0 = tmp;
4520	}
4521
4522	/* FPU operations */
4523
4524	static const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500};
4525
4526	void helper_fcom_ST0_FT0(void)
4527	{
4528	int ret;
4529
4530	ret = floatx_compare(ST0, FT0, &env->fp_status);
4531	env->fpus = (env->fpus & ~0x4500) \| fcom_ccval[ret + 1];
4532	}
4533
4534	void helper_fucom_ST0_FT0(void)
4535	{
4536	int ret;
4537
4538	ret = floatx_compare_quiet(ST0, FT0, &env->fp_status);
4539	env->fpus = (env->fpus & ~0x4500) \| fcom_ccval[ret+ 1];
4540	}
4541
4542	static const int fcomi_ccval[4] = {CC_C, CC_Z, 0, CC_Z \| CC_P \| CC_C};
4543
4544	void helper_fcomi_ST0_FT0(void)
4545	{
4546	int eflags;
4547	int ret;
4548
4549	ret = floatx_compare(ST0, FT0, &env->fp_status);
4550	eflags = helper_cc_compute_all(CC_OP);
4551	eflags = (eflags & ~(CC_Z \| CC_P \| CC_C)) \| fcomi_ccval[ret + 1];
4552	CC_SRC = eflags;
4553	}
4554
4555	void helper_fucomi_ST0_FT0(void)
4556	{
4557	int eflags;
4558	int ret;
4559
4560	ret = floatx_compare_quiet(ST0, FT0, &env->fp_status);
4561	eflags = helper_cc_compute_all(CC_OP);
4562	eflags = (eflags & ~(CC_Z \| CC_P \| CC_C)) \| fcomi_ccval[ret + 1];
4563	CC_SRC = eflags;
4564	}
4565
4566	void helper_fadd_ST0_FT0(void)
4567	{
4568	ST0 += FT0;
4569	}
4570
4571	void helper_fmul_ST0_FT0(void)
4572	{
4573	ST0 *= FT0;
4574	}
4575
4576	void helper_fsub_ST0_FT0(void)
4577	{
4578	ST0 -= FT0;
4579	}
4580
4581	void helper_fsubr_ST0_FT0(void)
4582	{
4583	ST0 = FT0 - ST0;
4584	}
4585
4586	void helper_fdiv_ST0_FT0(void)
4587	{
4588	ST0 = helper_fdiv(ST0, FT0);
4589	}
4590
4591	void helper_fdivr_ST0_FT0(void)
4592	{
4593	ST0 = helper_fdiv(FT0, ST0);
4594	}
4595
4596	/* fp operations between STN and ST0 */
4597
4598	void helper_fadd_STN_ST0(int st_index)
4599	{
4600	ST(st_index) += ST0;
4601	}
4602
4603	void helper_fmul_STN_ST0(int st_index)
4604	{
4605	ST(st_index) *= ST0;
4606	}
4607
4608	void helper_fsub_STN_ST0(int st_index)
4609	{
4610	ST(st_index) -= ST0;
4611	}
4612
4613	void helper_fsubr_STN_ST0(int st_index)
4614	{
4615	CPU86_LDouble *p;
4616	p = &ST(st_index);
4617	p = ST0 - p;
4618	}
4619
4620	void helper_fdiv_STN_ST0(int st_index)
4621	{
4622	CPU86_LDouble *p;
4623	p = &ST(st_index);
4624	p = helper_fdiv(p, ST0);
4625	}
4626
4627	void helper_fdivr_STN_ST0(int st_index)
4628	{
4629	CPU86_LDouble *p;
4630	p = &ST(st_index);
4631	p = helper_fdiv(ST0, p);
4632	}
4633
4634	/* misc FPU operations */
4635	void helper_fchs_ST0(void)
4636	{
4637	ST0 = floatx_chs(ST0);
4638	}
4639
4640	void helper_fabs_ST0(void)
4641	{
4642	ST0 = floatx_abs(ST0);
4643	}
4644
4645	void helper_fld1_ST0(void)
4646	{
4647	ST0 = f15rk[1];
4648	}
4649
4650	void helper_fldl2t_ST0(void)
4651	{
4652	ST0 = f15rk[6];
4653	}
4654
4655	void helper_fldl2e_ST0(void)
4656	{
4657	ST0 = f15rk[5];
4658	}
4659
4660	void helper_fldpi_ST0(void)
4661	{
4662	ST0 = f15rk[2];
4663	}
4664
4665	void helper_fldlg2_ST0(void)
4666	{
4667	ST0 = f15rk[3];
4668	}
4669
4670	void helper_fldln2_ST0(void)
4671	{
4672	ST0 = f15rk[4];
4673	}
4674
4675	void helper_fldz_ST0(void)
4676	{
4677	ST0 = f15rk[0];
4678	}
4679
4680	void helper_fldz_FT0(void)
4681	{
4682	FT0 = f15rk[0];
4683	}
4684
4685	#ifndef VBOX
4686	uint32_t helper_fnstsw(void)
4687	#else
4688	RTCCUINTREG helper_fnstsw(void)
4689	#endif
4690	{
4691	return (env->fpus & ~0x3800) \| (env->fpstt & 0x7) << 11;
4692	}
4693
4694	#ifndef VBOX
4695	uint32_t helper_fnstcw(void)
4696	#else
4697	RTCCUINTREG helper_fnstcw(void)
4698	#endif
4699	{
4700	return env->fpuc;
4701	}
4702
4703	static void update_fp_status(void)
4704	{
4705	int rnd_type;
4706
4707	/* set rounding mode */
4708	switch(env->fpuc & RC_MASK) {
4709	default:
4710	case RC_NEAR:
4711	rnd_type = float_round_nearest_even;
4712	break;
4713	case RC_DOWN:
4714	rnd_type = float_round_down;
4715	break;
4716	case RC_UP:
4717	rnd_type = float_round_up;
4718	break;
4719	case RC_CHOP:
4720	rnd_type = float_round_to_zero;
4721	break;
4722	}
4723	set_float_rounding_mode(rnd_type, &env->fp_status);
4724	#ifdef FLOATX80
4725	switch((env->fpuc >> 8) & 3) {
4726	case 0:
4727	rnd_type = 32;
4728	break;
4729	case 2:
4730	rnd_type = 64;
4731	break;
4732	case 3:
4733	default:
4734	rnd_type = 80;
4735	break;
4736	}
4737	set_floatx80_rounding_precision(rnd_type, &env->fp_status);
4738	#endif
4739	}
4740
4741	void helper_fldcw(uint32_t val)
4742	{
4743	env->fpuc = val;
4744	update_fp_status();
4745	}
4746
4747	void helper_fclex(void)
4748	{
4749	env->fpus &= 0x7f00;
4750	}
4751
4752	void helper_fwait(void)
4753	{
4754	if (env->fpus & FPUS_SE)
4755	fpu_raise_exception();
4756	}
4757
4758	void helper_fninit(void)
4759	{
4760	env->fpus = 0;
4761	env->fpstt = 0;
4762	env->fpuc = 0x37f;
4763	env->fptags[0] = 1;
4764	env->fptags[1] = 1;
4765	env->fptags[2] = 1;
4766	env->fptags[3] = 1;
4767	env->fptags[4] = 1;
4768	env->fptags[5] = 1;
4769	env->fptags[6] = 1;
4770	env->fptags[7] = 1;
4771	}
4772
4773	/* BCD ops */
4774
4775	void helper_fbld_ST0(target_ulong ptr)
4776	{
4777	CPU86_LDouble tmp;
4778	uint64_t val;
4779	unsigned int v;
4780	int i;
4781
4782	val = 0;
4783	for(i = 8; i >= 0; i--) {
4784	v = ldub(ptr + i);
4785	val = (val * 100) + ((v >> 4) * 10) + (v & 0xf);
4786	}
4787	tmp = val;
4788	if (ldub(ptr + 9) & 0x80)
4789	tmp = -tmp;
4790	fpush();
4791	ST0 = tmp;
4792	}
4793
4794	void helper_fbst_ST0(target_ulong ptr)
4795	{
4796	int v;
4797	target_ulong mem_ref, mem_end;
4798	int64_t val;
4799
4800	val = floatx_to_int64(ST0, &env->fp_status);
4801	mem_ref = ptr;
4802	mem_end = mem_ref + 9;
4803	if (val < 0) {
4804	stb(mem_end, 0x80);
4805	val = -val;
4806	} else {
4807	stb(mem_end, 0x00);
4808	}
4809	while (mem_ref < mem_end) {
4810	if (val == 0)
4811	break;
4812	v = val % 100;
4813	val = val / 100;
4814	v = ((v / 10) << 4) \| (v % 10);
4815	stb(mem_ref++, v);
4816	}
4817	while (mem_ref < mem_end) {
4818	stb(mem_ref++, 0);
4819	}
4820	}
4821
4822	void helper_f2xm1(void)
4823	{
4824	ST0 = pow(2.0,ST0) - 1.0;
4825	}
4826
4827	void helper_fyl2x(void)
4828	{
4829	CPU86_LDouble fptemp;
4830
4831	fptemp = ST0;
4832	if (fptemp>0.0){
4833	fptemp = log(fptemp)/log(2.0); /* log2(ST) */
4834	ST1 *= fptemp;
4835	fpop();
4836	} else {
4837	env->fpus &= (~0x4700);
4838	env->fpus \|= 0x400;
4839	}
4840	}
4841
4842	void helper_fptan(void)
4843	{
4844	CPU86_LDouble fptemp;
4845
4846	fptemp = ST0;
4847	if((fptemp > MAXTAN)\|\|(fptemp < -MAXTAN)) {
4848	env->fpus \|= 0x400;
4849	} else {
4850	ST0 = tan(fptemp);
4851	fpush();
4852	ST0 = 1.0;
4853	env->fpus &= (~0x400); /* C2 <-- 0 */
4854	/* the above code is for \|arg\| < 2*52 only /
4855	}
4856	}
4857
4858	void helper_fpatan(void)
4859	{
4860	CPU86_LDouble fptemp, fpsrcop;
4861
4862	fpsrcop = ST1;
4863	fptemp = ST0;
4864	ST1 = atan2(fpsrcop,fptemp);
4865	fpop();
4866	}
4867
4868	void helper_fxtract(void)
4869	{
4870	CPU86_LDoubleU temp;
4871	unsigned int expdif;
4872
4873	temp.d = ST0;
4874	expdif = EXPD(temp) - EXPBIAS;
4875	/DP exponent bias/
4876	ST0 = expdif;
4877	fpush();
4878	BIASEXPONENT(temp);
4879	ST0 = temp.d;
4880	}
4881
4882	void helper_fprem1(void)
4883	{
4884	CPU86_LDouble dblq, fpsrcop, fptemp;
4885	CPU86_LDoubleU fpsrcop1, fptemp1;
4886	int expdif;
4887	signed long long int q;
4888
4889	#ifndef VBOX /* Unfortunately, we cannot handle isinf/isnan easily in wrapper */
4890	if (isinf(ST0) \|\| isnan(ST0) \|\| isnan(ST1) \|\| (ST1 == 0.0)) {
4891	#else
4892	if ((ST0 != ST0) \|\| (ST1 != ST1) \|\| (ST1 == 0.0)) {
4893	#endif
4894	ST0 = 0.0 / 0.0; /* NaN */
4895	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4896	return;
4897	}
4898
4899	fpsrcop = ST0;
4900	fptemp = ST1;
4901	fpsrcop1.d = fpsrcop;
4902	fptemp1.d = fptemp;
4903	expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
4904
4905	if (expdif < 0) {
4906	/* optimisation? taken from the AMD docs */
4907	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4908	/* ST0 is unchanged */
4909	return;
4910	}
4911
4912	if (expdif < 53) {
4913	dblq = fpsrcop / fptemp;
4914	/* round dblq towards nearest integer */
4915	dblq = rint(dblq);
4916	ST0 = fpsrcop - fptemp * dblq;
4917
4918	/* convert dblq to q by truncating towards zero */
4919	if (dblq < 0.0)
4920	q = (signed long long int)(-dblq);
4921	else
4922	q = (signed long long int)dblq;
4923
4924	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4925	/* (C0,C3,C1) <-- (q2,q1,q0) */
4926	env->fpus \|= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */
4927	env->fpus \|= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */
4928	env->fpus \|= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */
4929	} else {
4930	env->fpus \|= 0x400; /* C2 <-- 1 */
4931	fptemp = pow(2.0, expdif - 50);
4932	fpsrcop = (ST0 / ST1) / fptemp;
4933	/* fpsrcop = integer obtained by chopping */
4934	fpsrcop = (fpsrcop < 0.0) ?
4935	-(floor(fabs(fpsrcop))) : floor(fpsrcop);
4936	ST0 -= (ST1 * fpsrcop * fptemp);
4937	}
4938	}
4939
4940	void helper_fprem(void)
4941	{
4942	CPU86_LDouble dblq, fpsrcop, fptemp;
4943	CPU86_LDoubleU fpsrcop1, fptemp1;
4944	int expdif;
4945	signed long long int q;
4946
4947	#ifndef VBOX /* Unfortunately, we cannot easily handle isinf/isnan in wrapper */
4948	if (isinf(ST0) \|\| isnan(ST0) \|\| isnan(ST1) \|\| (ST1 == 0.0)) {
4949	#else
4950	if ((ST0 != ST0) \|\| (ST1 != ST1) \|\| (ST1 == 0.0)) {
4951	#endif
4952	ST0 = 0.0 / 0.0; /* NaN */
4953	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4954	return;
4955	}
4956
4957	fpsrcop = (CPU86_LDouble)ST0;
4958	fptemp = (CPU86_LDouble)ST1;
4959	fpsrcop1.d = fpsrcop;
4960	fptemp1.d = fptemp;
4961	expdif = EXPD(fpsrcop1) - EXPD(fptemp1);
4962
4963	if (expdif < 0) {
4964	/* optimisation? taken from the AMD docs */
4965	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4966	/* ST0 is unchanged */
4967	return;
4968	}
4969
4970	if ( expdif < 53 ) {
4971	dblq = fpsrcop/ST0/ / fptemp/ST1/;
4972	/* round dblq towards zero */
4973	dblq = (dblq < 0.0) ? ceil(dblq) : floor(dblq);
4974	ST0 = fpsrcop/ST0/ - fptemp * dblq;
4975
4976	/* convert dblq to q by truncating towards zero */
4977	if (dblq < 0.0)
4978	q = (signed long long int)(-dblq);
4979	else
4980	q = (signed long long int)dblq;
4981
4982	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
4983	/* (C0,C3,C1) <-- (q2,q1,q0) */
4984	env->fpus \|= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */
4985	env->fpus \|= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */
4986	env->fpus \|= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */
4987	} else {
4988	int N = 32 + (expdif % 32); /* as per AMD docs */
4989	env->fpus \|= 0x400; /* C2 <-- 1 */
4990	fptemp = pow(2.0, (double)(expdif - N));
4991	fpsrcop = (ST0 / ST1) / fptemp;
4992	/* fpsrcop = integer obtained by chopping */
4993	fpsrcop = (fpsrcop < 0.0) ?
4994	-(floor(fabs(fpsrcop))) : floor(fpsrcop);
4995	ST0 -= (ST1 * fpsrcop * fptemp);
4996	}
4997	}
4998
4999	void helper_fyl2xp1(void)
5000	{
5001	CPU86_LDouble fptemp;
5002
5003	fptemp = ST0;
5004	if ((fptemp+1.0)>0.0) {
5005	fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */
5006	ST1 *= fptemp;
5007	fpop();
5008	} else {
5009	env->fpus &= (~0x4700);
5010	env->fpus \|= 0x400;
5011	}
5012	}
5013
5014	void helper_fsqrt(void)
5015	{
5016	CPU86_LDouble fptemp;
5017
5018	fptemp = ST0;
5019	if (fptemp<0.0) {
5020	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
5021	env->fpus \|= 0x400;
5022	}
5023	ST0 = sqrt(fptemp);
5024	}
5025
5026	void helper_fsincos(void)
5027	{
5028	CPU86_LDouble fptemp;
5029
5030	fptemp = ST0;
5031	if ((fptemp > MAXTAN)\|\|(fptemp < -MAXTAN)) {
5032	env->fpus \|= 0x400;
5033	} else {
5034	ST0 = sin(fptemp);
5035	fpush();
5036	ST0 = cos(fptemp);
5037	env->fpus &= (~0x400); /* C2 <-- 0 */
5038	/* the above code is for \|arg\| < 2*63 only /
5039	}
5040	}
5041
5042	void helper_frndint(void)
5043	{
5044	ST0 = floatx_round_to_int(ST0, &env->fp_status);
5045	}
5046
5047	void helper_fscale(void)
5048	{
5049	ST0 = ldexp (ST0, (int)(ST1));
5050	}
5051
5052	void helper_fsin(void)
5053	{
5054	CPU86_LDouble fptemp;
5055
5056	fptemp = ST0;
5057	if ((fptemp > MAXTAN)\|\|(fptemp < -MAXTAN)) {
5058	env->fpus \|= 0x400;
5059	} else {
5060	ST0 = sin(fptemp);
5061	env->fpus &= (~0x400); /* C2 <-- 0 */
5062	/* the above code is for \|arg\| < 2*53 only /
5063	}
5064	}
5065
5066	void helper_fcos(void)
5067	{
5068	CPU86_LDouble fptemp;
5069
5070	fptemp = ST0;
5071	if((fptemp > MAXTAN)\|\|(fptemp < -MAXTAN)) {
5072	env->fpus \|= 0x400;
5073	} else {
5074	ST0 = cos(fptemp);
5075	env->fpus &= (~0x400); /* C2 <-- 0 */
5076	/* the above code is for \|arg5 < 2*63 only /
5077	}
5078	}
5079
5080	void helper_fxam_ST0(void)
5081	{
5082	CPU86_LDoubleU temp;
5083	int expdif;
5084
5085	temp.d = ST0;
5086
5087	env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */
5088	if (SIGND(temp))
5089	env->fpus \|= 0x200; /* C1 <-- 1 */
5090
5091	/* XXX: test fptags too */
5092	expdif = EXPD(temp);
5093	if (expdif == MAXEXPD) {
5094	#ifdef USE_X86LDOUBLE
5095	if (MANTD(temp) == 0x8000000000000000ULL)
5096	#else
5097	if (MANTD(temp) == 0)
5098	#endif
5099	env->fpus \|= 0x500 /Infinity/;
5100	else
5101	env->fpus \|= 0x100 /NaN/;
5102	} else if (expdif == 0) {
5103	if (MANTD(temp) == 0)
5104	env->fpus \|= 0x4000 /Zero/;
5105	else
5106	env->fpus \|= 0x4400 /Denormal/;
5107	} else {
5108	env->fpus \|= 0x400;
5109	}
5110	}
5111
5112	void helper_fstenv(target_ulong ptr, int data32)
5113	{
5114	int fpus, fptag, exp, i;
5115	uint64_t mant;
5116	CPU86_LDoubleU tmp;
5117
5118	fpus = (env->fpus & ~0x3800) \| (env->fpstt & 0x7) << 11;
5119	fptag = 0;
5120	for (i=7; i>=0; i--) {
5121	fptag <<= 2;
5122	if (env->fptags[i]) {
5123	fptag \|= 3;
5124	} else {
5125	tmp.d = env->fpregs[i].d;
5126	exp = EXPD(tmp);
5127	mant = MANTD(tmp);
5128	if (exp == 0 && mant == 0) {
5129	/* zero */
5130	fptag \|= 1;
5131	} else if (exp == 0 \|\| exp == MAXEXPD
5132	#ifdef USE_X86LDOUBLE
5133	\|\| (mant & (1LL << 63)) == 0
5134	#endif
5135	) {
5136	/* NaNs, infinity, denormal */
5137	fptag \|= 2;
5138	}
5139	}
5140	}
5141	if (data32) {
5142	/* 32 bit */
5143	stl(ptr, env->fpuc);
5144	stl(ptr + 4, fpus);
5145	stl(ptr + 8, fptag);
5146	stl(ptr + 12, 0); /* fpip */
5147	stl(ptr + 16, 0); /* fpcs */
5148	stl(ptr + 20, 0); /* fpoo */
5149	stl(ptr + 24, 0); /* fpos */
5150	} else {
5151	/* 16 bit */
5152	stw(ptr, env->fpuc);
5153	stw(ptr + 2, fpus);
5154	stw(ptr + 4, fptag);
5155	stw(ptr + 6, 0);
5156	stw(ptr + 8, 0);
5157	stw(ptr + 10, 0);
5158	stw(ptr + 12, 0);
5159	}
5160	}
5161
5162	void helper_fldenv(target_ulong ptr, int data32)
5163	{
5164	int i, fpus, fptag;
5165
5166	if (data32) {
5167	env->fpuc = lduw(ptr);
5168	fpus = lduw(ptr + 4);
5169	fptag = lduw(ptr + 8);
5170	}
5171	else {
5172	env->fpuc = lduw(ptr);
5173	fpus = lduw(ptr + 2);
5174	fptag = lduw(ptr + 4);
5175	}
5176	env->fpstt = (fpus >> 11) & 7;
5177	env->fpus = fpus & ~0x3800;
5178	for(i = 0;i < 8; i++) {
5179	env->fptags[i] = ((fptag & 3) == 3);
5180	fptag >>= 2;
5181	}
5182	}
5183
5184	void helper_fsave(target_ulong ptr, int data32)
5185	{
5186	CPU86_LDouble tmp;
5187	int i;
5188
5189	helper_fstenv(ptr, data32);
5190
5191	ptr += (14 << data32);
5192	for(i = 0;i < 8; i++) {
5193	tmp = ST(i);
5194	helper_fstt(tmp, ptr);
5195	ptr += 10;
5196	}
5197
5198	/* fninit */
5199	env->fpus = 0;
5200	env->fpstt = 0;
5201	env->fpuc = 0x37f;
5202	env->fptags[0] = 1;
5203	env->fptags[1] = 1;
5204	env->fptags[2] = 1;
5205	env->fptags[3] = 1;
5206	env->fptags[4] = 1;
5207	env->fptags[5] = 1;
5208	env->fptags[6] = 1;
5209	env->fptags[7] = 1;
5210	}
5211
5212	void helper_frstor(target_ulong ptr, int data32)
5213	{
5214	CPU86_LDouble tmp;
5215	int i;
5216
5217	helper_fldenv(ptr, data32);
5218	ptr += (14 << data32);
5219
5220	for(i = 0;i < 8; i++) {
5221	tmp = helper_fldt(ptr);
5222	ST(i) = tmp;
5223	ptr += 10;
5224	}
5225	}
5226
5227	void helper_fxsave(target_ulong ptr, int data64)
5228	{
5229	int fpus, fptag, i, nb_xmm_regs;
5230	CPU86_LDouble tmp;
5231	target_ulong addr;
5232
5233	/* The operand must be 16 byte aligned */
5234	if (ptr & 0xf) {
5235	raise_exception(EXCP0D_GPF);
5236	}
5237
5238	fpus = (env->fpus & ~0x3800) \| (env->fpstt & 0x7) << 11;
5239	fptag = 0;
5240	for(i = 0; i < 8; i++) {
5241	fptag \|= (env->fptags[i] << i);
5242	}
5243	stw(ptr, env->fpuc);
5244	stw(ptr + 2, fpus);
5245	stw(ptr + 4, fptag ^ 0xff);
5246	#ifdef TARGET_X86_64
5247	if (data64) {
5248	stq(ptr + 0x08, 0); /* rip */
5249	stq(ptr + 0x10, 0); /* rdp */
5250	} else
5251	#endif
5252	{
5253	stl(ptr + 0x08, 0); /* eip */
5254	stl(ptr + 0x0c, 0); /* sel */
5255	stl(ptr + 0x10, 0); /* dp */
5256	stl(ptr + 0x14, 0); /* sel */
5257	}
5258
5259	addr = ptr + 0x20;
5260	for(i = 0;i < 8; i++) {
5261	tmp = ST(i);
5262	helper_fstt(tmp, addr);
5263	addr += 16;
5264	}
5265
5266	if (env->cr[4] & CR4_OSFXSR_MASK) {
5267	/* XXX: finish it */
5268	stl(ptr + 0x18, env->mxcsr); /* mxcsr */
5269	stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */
5270	if (env->hflags & HF_CS64_MASK)
5271	nb_xmm_regs = 16;
5272	else
5273	nb_xmm_regs = 8;
5274	addr = ptr + 0xa0;
5275	/* Fast FXSAVE leaves out the XMM registers */
5276	if (!(env->efer & MSR_EFER_FFXSR)
5277	\|\| (env->hflags & HF_CPL_MASK)
5278	\|\| !(env->hflags & HF_LMA_MASK)) {
5279	for(i = 0; i < nb_xmm_regs; i++) {
5280	stq(addr, env->xmm_regs[i].XMM_Q(0));
5281	stq(addr + 8, env->xmm_regs[i].XMM_Q(1));
5282	addr += 16;
5283	}
5284	}
5285	}
5286	}
5287
5288	void helper_fxrstor(target_ulong ptr, int data64)
5289	{
5290	int i, fpus, fptag, nb_xmm_regs;
5291	CPU86_LDouble tmp;
5292	target_ulong addr;
5293
5294	/* The operand must be 16 byte aligned */
5295	if (ptr & 0xf) {
5296	raise_exception(EXCP0D_GPF);
5297	}
5298
5299	env->fpuc = lduw(ptr);
5300	fpus = lduw(ptr + 2);
5301	fptag = lduw(ptr + 4);
5302	env->fpstt = (fpus >> 11) & 7;
5303	env->fpus = fpus & ~0x3800;
5304	fptag ^= 0xff;
5305	for(i = 0;i < 8; i++) {
5306	env->fptags[i] = ((fptag >> i) & 1);
5307	}
5308
5309	addr = ptr + 0x20;
5310	for(i = 0;i < 8; i++) {
5311	tmp = helper_fldt(addr);
5312	ST(i) = tmp;
5313	addr += 16;
5314	}
5315
5316	if (env->cr[4] & CR4_OSFXSR_MASK) {
5317	/* XXX: finish it */
5318	env->mxcsr = ldl(ptr + 0x18);
5319	//ldl(ptr + 0x1c);
5320	if (env->hflags & HF_CS64_MASK)
5321	nb_xmm_regs = 16;
5322	else
5323	nb_xmm_regs = 8;
5324	addr = ptr + 0xa0;
5325	/* Fast FXRESTORE leaves out the XMM registers */
5326	if (!(env->efer & MSR_EFER_FFXSR)
5327	\|\| (env->hflags & HF_CPL_MASK)
5328	\|\| !(env->hflags & HF_LMA_MASK)) {
5329	for(i = 0; i < nb_xmm_regs; i++) {
5330	#if !defined(VBOX) \|\| __GNUC__ < 4
5331	env->xmm_regs[i].XMM_Q(0) = ldq(addr);
5332	env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8);
5333	#else /* VBOX + __GNUC__ >= 4: gcc 4.x compiler bug - it runs out of registers for the 64-bit value. */
5334	# if 1
5335	env->xmm_regs[i].XMM_L(0) = ldl(addr);
5336	env->xmm_regs[i].XMM_L(1) = ldl(addr + 4);
5337	env->xmm_regs[i].XMM_L(2) = ldl(addr + 8);
5338	env->xmm_regs[i].XMM_L(3) = ldl(addr + 12);
5339	# else
5340	/* this works fine on Mac OS X, gcc 4.0.1 */
5341	uint64_t u64 = ldq(addr);
5342	env->xmm_regs[i].XMM_Q(0);
5343	u64 = ldq(addr + 4);
5344	env->xmm_regs[i].XMM_Q(1) = u64;
5345	# endif
5346	#endif
5347	addr += 16;
5348	}
5349	}
5350	}
5351	}
5352
5353	#ifndef USE_X86LDOUBLE
5354
5355	void cpu_get_fp80(uint64_t pmant, uint16_t pexp, CPU86_LDouble f)
5356	{
5357	CPU86_LDoubleU temp;
5358	int e;
5359
5360	temp.d = f;
5361	/* mantissa */
5362	*pmant = (MANTD(temp) << 11) \| (1LL << 63);
5363	/* exponent + sign */
5364	e = EXPD(temp) - EXPBIAS + 16383;
5365	e \|= SIGND(temp) >> 16;
5366	*pexp = e;
5367	}
5368
5369	CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper)
5370	{
5371	CPU86_LDoubleU temp;
5372	int e;
5373	uint64_t ll;
5374
5375	/* XXX: handle overflow ? */
5376	e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */
5377	e \|= (upper >> 4) & 0x800; /* sign */
5378	ll = (mant >> 11) & ((1LL << 52) - 1);
5379	#ifdef __arm__
5380	temp.l.upper = (e << 20) \| (ll >> 32);
5381	temp.l.lower = ll;
5382	#else
5383	temp.ll = ll \| ((uint64_t)e << 52);
5384	#endif
5385	return temp.d;
5386	}
5387
5388	#else
5389
5390	void cpu_get_fp80(uint64_t pmant, uint16_t pexp, CPU86_LDouble f)
5391	{
5392	CPU86_LDoubleU temp;
5393
5394	temp.d = f;
5395	*pmant = temp.l.lower;
5396	*pexp = temp.l.upper;
5397	}
5398
5399	CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper)
5400	{
5401	CPU86_LDoubleU temp;
5402
5403	temp.l.upper = upper;
5404	temp.l.lower = mant;
5405	return temp.d;
5406	}
5407	#endif
5408
5409	#ifdef TARGET_X86_64
5410
5411	//#define DEBUG_MULDIV
5412
5413	static void add128(uint64_t plow, uint64_t phigh, uint64_t a, uint64_t b)
5414	{
5415	*plow += a;
5416	/* carry test */
5417	if (*plow < a)
5418	(*phigh)++;
5419	*phigh += b;
5420	}
5421
5422	static void neg128(uint64_t plow, uint64_t phigh)
5423	{
5424	plow = ~ plow;
5425	phigh = ~ phigh;
5426	add128(plow, phigh, 1, 0);
5427	}
5428
5429	/* return TRUE if overflow */
5430	static int div64(uint64_t plow, uint64_t phigh, uint64_t b)
5431	{
5432	uint64_t q, r, a1, a0;
5433	int i, qb, ab;
5434
5435	a0 = *plow;
5436	a1 = *phigh;
5437	if (a1 == 0) {
5438	q = a0 / b;
5439	r = a0 % b;
5440	*plow = q;
5441	*phigh = r;
5442	} else {
5443	if (a1 >= b)
5444	return 1;
5445	/* XXX: use a better algorithm */
5446	for(i = 0; i < 64; i++) {
5447	ab = a1 >> 63;
5448	a1 = (a1 << 1) \| (a0 >> 63);
5449	if (ab \|\| a1 >= b) {
5450	a1 -= b;
5451	qb = 1;
5452	} else {
5453	qb = 0;
5454	}
5455	a0 = (a0 << 1) \| qb;
5456	}
5457	#if defined(DEBUG_MULDIV)
5458	printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n",
5459	phigh, plow, b, a0, a1);
5460	#endif
5461	*plow = a0;
5462	*phigh = a1;
5463	}
5464	return 0;
5465	}
5466
5467	/* return TRUE if overflow */
5468	static int idiv64(uint64_t plow, uint64_t phigh, int64_t b)
5469	{
5470	int sa, sb;
5471	sa = ((int64_t)*phigh < 0);
5472	if (sa)
5473	neg128(plow, phigh);
5474	sb = (b < 0);
5475	if (sb)
5476	b = -b;
5477	if (div64(plow, phigh, b) != 0)
5478	return 1;
5479	if (sa ^ sb) {
5480	if (*plow > (1ULL << 63))
5481	return 1;
5482	plow = - plow;
5483	} else {
5484	if (*plow >= (1ULL << 63))
5485	return 1;
5486	}
5487	if (sa)
5488	phigh = - phigh;
5489	return 0;
5490	}
5491
5492	void helper_mulq_EAX_T0(target_ulong t0)
5493	{
5494	uint64_t r0, r1;
5495
5496	mulu64(&r0, &r1, EAX, t0);
5497	EAX = r0;
5498	EDX = r1;
5499	CC_DST = r0;
5500	CC_SRC = r1;
5501	}
5502
5503	void helper_imulq_EAX_T0(target_ulong t0)
5504	{
5505	uint64_t r0, r1;
5506
5507	muls64(&r0, &r1, EAX, t0);
5508	EAX = r0;
5509	EDX = r1;
5510	CC_DST = r0;
5511	CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
5512	}
5513
5514	target_ulong helper_imulq_T0_T1(target_ulong t0, target_ulong t1)
5515	{
5516	uint64_t r0, r1;
5517
5518	muls64(&r0, &r1, t0, t1);
5519	CC_DST = r0;
5520	CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
5521	return r0;
5522	}
5523
5524	void helper_divq_EAX(target_ulong t0)
5525	{
5526	uint64_t r0, r1;
5527	if (t0 == 0) {
5528	raise_exception(EXCP00_DIVZ);
5529	}
5530	r0 = EAX;
5531	r1 = EDX;
5532	if (div64(&r0, &r1, t0))
5533	raise_exception(EXCP00_DIVZ);
5534	EAX = r0;
5535	EDX = r1;
5536	}
5537
5538	void helper_idivq_EAX(target_ulong t0)
5539	{
5540	uint64_t r0, r1;
5541	if (t0 == 0) {
5542	raise_exception(EXCP00_DIVZ);
5543	}
5544	r0 = EAX;
5545	r1 = EDX;
5546	if (idiv64(&r0, &r1, t0))
5547	raise_exception(EXCP00_DIVZ);
5548	EAX = r0;
5549	EDX = r1;
5550	}
5551	#endif
5552
5553	static void do_hlt(void)
5554	{
5555	env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
5556	env->halted = 1;
5557	env->exception_index = EXCP_HLT;
5558	cpu_loop_exit();
5559	}
5560
5561	void helper_hlt(int next_eip_addend)
5562	{
5563	helper_svm_check_intercept_param(SVM_EXIT_HLT, 0);
5564	EIP += next_eip_addend;
5565
5566	do_hlt();
5567	}
5568
5569	void helper_monitor(target_ulong ptr)
5570	{
5571	#ifdef VBOX
5572	if ((uint32_t)ECX > 1)
5573	raise_exception(EXCP0D_GPF);
5574	#else /* !VBOX */
5575	if ((uint32_t)ECX != 0)
5576	raise_exception(EXCP0D_GPF);
5577	#endif /* !VBOX */
5578	/* XXX: store address ? */
5579	helper_svm_check_intercept_param(SVM_EXIT_MONITOR, 0);
5580	}
5581
5582	void helper_mwait(int next_eip_addend)
5583	{
5584	if ((uint32_t)ECX != 0)
5585	raise_exception(EXCP0D_GPF);
5586	#ifdef VBOX
5587	helper_hlt(next_eip_addend);
5588	#else /* !VBOX */
5589	helper_svm_check_intercept_param(SVM_EXIT_MWAIT, 0);
5590	EIP += next_eip_addend;
5591
5592	/* XXX: not complete but not completely erroneous */
5593	if (env->cpu_index != 0 \|\| env->next_cpu != NULL) {
5594	/* more than one CPU: do not sleep because another CPU may
5595	wake this one */
5596	} else {
5597	do_hlt();
5598	}
5599	#endif /* !VBOX */
5600	}
5601
5602	void helper_debug(void)
5603	{
5604	env->exception_index = EXCP_DEBUG;
5605	cpu_loop_exit();
5606	}
5607
5608	void helper_reset_rf(void)
5609	{
5610	env->eflags &= ~RF_MASK;
5611	}
5612
5613	void helper_raise_interrupt(int intno, int next_eip_addend)
5614	{
5615	raise_interrupt(intno, 1, 0, next_eip_addend);
5616	}
5617
5618	void helper_raise_exception(int exception_index)
5619	{
5620	raise_exception(exception_index);
5621	}
5622
5623	void helper_cli(void)
5624	{
5625	env->eflags &= ~IF_MASK;
5626	}
5627
5628	void helper_sti(void)
5629	{
5630	env->eflags \|= IF_MASK;
5631	}
5632
5633	#ifdef VBOX
5634	void helper_cli_vme(void)
5635	{
5636	env->eflags &= ~VIF_MASK;
5637	}
5638
5639	void helper_sti_vme(void)
5640	{
5641	/* First check, then change eflags according to the AMD manual */
5642	if (env->eflags & VIP_MASK) {
5643	raise_exception(EXCP0D_GPF);
5644	}
5645	env->eflags \|= VIF_MASK;
5646	}
5647	#endif /* VBOX */
5648
5649	#if 0
5650	/* vm86plus instructions */
5651	void helper_cli_vm(void)
5652	{
5653	env->eflags &= ~VIF_MASK;
5654	}
5655
5656	void helper_sti_vm(void)
5657	{
5658	env->eflags \|= VIF_MASK;
5659	if (env->eflags & VIP_MASK) {
5660	raise_exception(EXCP0D_GPF);
5661	}
5662	}
5663	#endif
5664
5665	void helper_set_inhibit_irq(void)
5666	{
5667	env->hflags \|= HF_INHIBIT_IRQ_MASK;
5668	}
5669
5670	void helper_reset_inhibit_irq(void)
5671	{
5672	env->hflags &= ~HF_INHIBIT_IRQ_MASK;
5673	}
5674
5675	void helper_boundw(target_ulong a0, int v)
5676	{
5677	int low, high;
5678	low = ldsw(a0);
5679	high = ldsw(a0 + 2);
5680	v = (int16_t)v;
5681	if (v < low \|\| v > high) {
5682	raise_exception(EXCP05_BOUND);
5683	}
5684	}
5685
5686	void helper_boundl(target_ulong a0, int v)
5687	{
5688	int low, high;
5689	low = ldl(a0);
5690	high = ldl(a0 + 4);
5691	if (v < low \|\| v > high) {
5692	raise_exception(EXCP05_BOUND);
5693	}
5694	}
5695
5696	static float approx_rsqrt(float a)
5697	{
5698	return 1.0 / sqrt(a);
5699	}
5700
5701	static float approx_rcp(float a)
5702	{
5703	return 1.0 / a;
5704	}
5705
5706	#if !defined(CONFIG_USER_ONLY)
5707
5708	#define MMUSUFFIX _mmu
5709
5710	#define SHIFT 0
5711	#include "softmmu_template.h"
5712
5713	#define SHIFT 1
5714	#include "softmmu_template.h"
5715
5716	#define SHIFT 2
5717	#include "softmmu_template.h"
5718
5719	#define SHIFT 3
5720	#include "softmmu_template.h"
5721
5722	#endif
5723
5724	#if defined(VBOX) && defined(REM_PHYS_ADDR_IN_TLB)
5725	/* This code assumes real physical address always fit into host CPU reg,
5726	which is wrong in general, but true for our current use cases. */
5727	RTCCUINTREG REGPARM __ldb_vbox_phys(RTCCUINTREG addr)
5728	{
5729	return remR3PhysReadS8(addr);
5730	}
5731	RTCCUINTREG REGPARM __ldub_vbox_phys(RTCCUINTREG addr)
5732	{
5733	return remR3PhysReadU8(addr);
5734	}
5735	void REGPARM __stb_vbox_phys(RTCCUINTREG addr, RTCCUINTREG val)
5736	{
5737	remR3PhysWriteU8(addr, val);
5738	}
5739	RTCCUINTREG REGPARM __ldw_vbox_phys(RTCCUINTREG addr)
5740	{
5741	return remR3PhysReadS16(addr);
5742	}
5743	RTCCUINTREG REGPARM __lduw_vbox_phys(RTCCUINTREG addr)
5744	{
5745	return remR3PhysReadU16(addr);
5746	}
5747	void REGPARM __stw_vbox_phys(RTCCUINTREG addr, RTCCUINTREG val)
5748	{
5749	remR3PhysWriteU16(addr, val);
5750	}
5751	RTCCUINTREG REGPARM __ldl_vbox_phys(RTCCUINTREG addr)
5752	{
5753	return remR3PhysReadS32(addr);
5754	}
5755	RTCCUINTREG REGPARM __ldul_vbox_phys(RTCCUINTREG addr)
5756	{
5757	return remR3PhysReadU32(addr);
5758	}
5759	void REGPARM __stl_vbox_phys(RTCCUINTREG addr, RTCCUINTREG val)
5760	{
5761	remR3PhysWriteU32(addr, val);
5762	}
5763	uint64_t REGPARM __ldq_vbox_phys(RTCCUINTREG addr)
5764	{
5765	return remR3PhysReadU64(addr);
5766	}
5767	void REGPARM __stq_vbox_phys(RTCCUINTREG addr, uint64_t val)
5768	{
5769	remR3PhysWriteU64(addr, val);
5770	}
5771	#endif /* VBOX */
5772
5773	#if !defined(CONFIG_USER_ONLY)
5774	/* try to fill the TLB and return an exception if error. If retaddr is
5775	NULL, it means that the function was called in C code (i.e. not
5776	from generated code or from helper.c) */
5777	/* XXX: fix it to restore all registers */
5778	void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
5779	{
5780	TranslationBlock *tb;
5781	int ret;
5782	uintptr_t pc;
5783	CPUX86State *saved_env;
5784
5785	/* XXX: hack to restore env in all cases, even if not called from
5786	generated code */
5787	saved_env = env;
5788	env = cpu_single_env;
5789
5790	ret = cpu_x86_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
5791	if (ret) {
5792	if (retaddr) {
5793	/* now we have a real cpu fault */
5794	pc = (uintptr_t)retaddr;
5795	tb = tb_find_pc(pc);
5796	if (tb) {
5797	/* the PC is inside the translated code. It means that we have
5798	a virtual CPU fault */
5799	cpu_restore_state(tb, env, pc, NULL);
5800	}
5801	}
5802	raise_exception_err(env->exception_index, env->error_code);
5803	}
5804	env = saved_env;
5805	}
5806	#endif
5807
5808	#ifdef VBOX
5809
5810	/**
5811	* Correctly computes the eflags.
5812	* @returns eflags.
5813	* @param env1 CPU environment.
5814	*/
5815	uint32_t raw_compute_eflags(CPUX86State *env1)
5816	{
5817	CPUX86State *savedenv = env;
5818	uint32_t efl;
5819	env = env1;
5820	efl = compute_eflags();
5821	env = savedenv;
5822	return efl;
5823	}
5824
5825	/**
5826	* Reads byte from virtual address in guest memory area.
5827	* XXX: is it working for any addresses? swapped out pages?
5828	* @returns read data byte.
5829	* @param env1 CPU environment.
5830	* @param pvAddr GC Virtual address.
5831	*/
5832	uint8_t read_byte(CPUX86State *env1, target_ulong addr)
5833	{
5834	CPUX86State *savedenv = env;
5835	uint8_t u8;
5836	env = env1;
5837	u8 = ldub_kernel(addr);
5838	env = savedenv;
5839	return u8;
5840	}
5841
5842	/**
5843	* Reads byte from virtual address in guest memory area.
5844	* XXX: is it working for any addresses? swapped out pages?
5845	* @returns read data byte.
5846	* @param env1 CPU environment.
5847	* @param pvAddr GC Virtual address.
5848	*/
5849	uint16_t read_word(CPUX86State *env1, target_ulong addr)
5850	{
5851	CPUX86State *savedenv = env;
5852	uint16_t u16;
5853	env = env1;
5854	u16 = lduw_kernel(addr);
5855	env = savedenv;
5856	return u16;
5857	}
5858
5859	/**
5860	* Reads byte from virtual address in guest memory area.
5861	* XXX: is it working for any addresses? swapped out pages?
5862	* @returns read data byte.
5863	* @param env1 CPU environment.
5864	* @param pvAddr GC Virtual address.
5865	*/
5866	uint32_t read_dword(CPUX86State *env1, target_ulong addr)
5867	{
5868	CPUX86State *savedenv = env;
5869	uint32_t u32;
5870	env = env1;
5871	u32 = ldl_kernel(addr);
5872	env = savedenv;
5873	return u32;
5874	}
5875
5876	/**
5877	* Writes byte to virtual address in guest memory area.
5878	* XXX: is it working for any addresses? swapped out pages?
5879	* @returns read data byte.
5880	* @param env1 CPU environment.
5881	* @param pvAddr GC Virtual address.
5882	* @param val byte value
5883	*/
5884	void write_byte(CPUX86State *env1, target_ulong addr, uint8_t val)
5885	{
5886	CPUX86State *savedenv = env;
5887	env = env1;
5888	stb(addr, val);
5889	env = savedenv;
5890	}
5891
5892	void write_word(CPUX86State *env1, target_ulong addr, uint16_t val)
5893	{
5894	CPUX86State *savedenv = env;
5895	env = env1;
5896	stw(addr, val);
5897	env = savedenv;
5898	}
5899
5900	void write_dword(CPUX86State *env1, target_ulong addr, uint32_t val)
5901	{
5902	CPUX86State *savedenv = env;
5903	env = env1;
5904	stl(addr, val);
5905	env = savedenv;
5906	}
5907
5908	/**
5909	* Correctly loads selector into segment register with updating internal
5910	* qemu data/caches.
5911	* @param env1 CPU environment.
5912	* @param seg_reg Segment register.
5913	* @param selector Selector to load.
5914	*/
5915	void sync_seg(CPUX86State *env1, int seg_reg, int selector)
5916	{
5917	CPUX86State *savedenv = env;
5918	#ifdef FORCE_SEGMENT_SYNC
5919	jmp_buf old_buf;
5920	#endif
5921
5922	env = env1;
5923
5924	if ( env->eflags & X86_EFL_VM
5925	\|\| !(env->cr[0] & X86_CR0_PE))
5926	{
5927	load_seg_vm(seg_reg, selector);
5928
5929	env = savedenv;
5930
5931	/* Successful sync. */
5932	Assert(env1->segs[seg_reg].newselector == 0);
5933	}
5934	else
5935	{
5936	/* For some reasons, it works even w/o save/restore of the jump buffer, so as code is
5937	time critical - let's not do that */
5938	#ifdef FORCE_SEGMENT_SYNC
5939	memcpy(&old_buf, &env1->jmp_env, sizeof(old_buf));
5940	#endif
5941	if (setjmp(env1->jmp_env) == 0)
5942	{
5943	if (seg_reg == R_CS)
5944	{
5945	uint32_t e1, e2;
5946	e1 = e2 = 0;
5947	load_segment(&e1, &e2, selector);
5948	cpu_x86_load_seg_cache(env, R_CS, selector,
5949	get_seg_base(e1, e2),
5950	get_seg_limit(e1, e2),
5951	e2);
5952	}
5953	else
5954	helper_load_seg(seg_reg, selector);
5955	/* We used to use tss_load_seg(seg_reg, selector); which, for some reasons ignored
5956	loading 0 selectors, what, in order, lead to subtle problems like #3588 */
5957
5958	env = savedenv;
5959
5960	/* Successful sync. */
5961	Assert(env1->segs[seg_reg].newselector == 0);
5962	}
5963	else
5964	{
5965	env = savedenv;
5966
5967	/* Postpone sync until the guest uses the selector. */
5968	env1->segs[seg_reg].selector = selector; /* hidden values are now incorrect, but will be resynced when this register is accessed. */
5969	env1->segs[seg_reg].newselector = selector;
5970	Log(("sync_seg: out of sync seg_reg=%d selector=%#x\n", seg_reg, selector));
5971	env1->exception_index = -1;
5972	env1->error_code = 0;
5973	env1->old_exception = -1;
5974	}
5975	#ifdef FORCE_SEGMENT_SYNC
5976	memcpy(&env1->jmp_env, &old_buf, sizeof(old_buf));
5977	#endif
5978	}
5979
5980	}
5981
5982	DECLINLINE(void) tb_reset_jump(TranslationBlock *tb, int n)
5983	{
5984	tb_set_jmp_target(tb, n, (uintptr_t)(tb->tc_ptr + tb->tb_next_offset[n]));
5985	}
5986
5987
5988	int emulate_single_instr(CPUX86State *env1)
5989	{
5990	TranslationBlock *tb;
5991	TranslationBlock *current;
5992	int flags;
5993	uint8_t *tc_ptr;
5994	target_ulong old_eip;
5995
5996	/* ensures env is loaded! */
5997	CPUX86State *savedenv = env;
5998	env = env1;
5999
6000	RAWEx_ProfileStart(env, STATS_EMULATE_SINGLE_INSTR);
6001
6002	current = env->current_tb;
6003	env->current_tb = NULL;
6004	flags = env->hflags \| (env->eflags & (IOPL_MASK \| TF_MASK \| VM_MASK));
6005
6006	/*
6007	* Translate only one instruction.
6008	*/
6009	ASMAtomicOrU32(&env->state, CPU_EMULATE_SINGLE_INSTR);
6010	tb = tb_gen_code(env, env->eip + env->segs[R_CS].base,
6011	env->segs[R_CS].base, flags, 0);
6012
6013	ASMAtomicAndU32(&env->state, ~CPU_EMULATE_SINGLE_INSTR);
6014
6015
6016	/* tb_link_phys: */
6017	tb->jmp_first = (TranslationBlock *)((intptr_t)tb \| 2);
6018	tb->jmp_next[0] = NULL;
6019	tb->jmp_next[1] = NULL;
6020	Assert(tb->jmp_next[0] == NULL);
6021	Assert(tb->jmp_next[1] == NULL);
6022	if (tb->tb_next_offset[0] != 0xffff)
6023	tb_reset_jump(tb, 0);
6024	if (tb->tb_next_offset[1] != 0xffff)
6025	tb_reset_jump(tb, 1);
6026
6027	/*
6028	* Execute it using emulation
6029	*/
6030	old_eip = env->eip;
6031	env->current_tb = tb;
6032
6033	/*
6034	* eip remains the same for repeated instructions; no idea why qemu doesn't do a jump inside the generated code
6035	* perhaps not a very safe hack
6036	*/
6037	while (old_eip == env->eip)
6038	{
6039	tc_ptr = tb->tc_ptr;
6040
6041	#if defined(VBOX) && defined(GCC_WITH_BUGGY_REGPARM)
6042	int fake_ret;
6043	tcg_qemu_tb_exec(tc_ptr, fake_ret);
6044	#else
6045	tcg_qemu_tb_exec(tc_ptr);
6046	#endif
6047
6048	/*
6049	* Exit once we detect an external interrupt and interrupts are enabled
6050	*/
6051	if ( (env->interrupt_request & (CPU_INTERRUPT_EXTERNAL_EXIT \| CPU_INTERRUPT_EXTERNAL_TIMER))
6052	\|\| ( (env->eflags & IF_MASK)
6053	&& !(env->hflags & HF_INHIBIT_IRQ_MASK)
6054	&& (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_HARD) )
6055	)
6056	{
6057	break;
6058	}
6059	if (env->interrupt_request & CPU_INTERRUPT_EXTERNAL_FLUSH_TLB) {
6060	tlb_flush(env, true);
6061	}
6062	}
6063	env->current_tb = current;
6064
6065	tb_phys_invalidate(tb, -1);
6066	tb_free(tb);
6067	/*
6068	Assert(tb->tb_next_offset[0] == 0xffff);
6069	Assert(tb->tb_next_offset[1] == 0xffff);
6070	Assert(tb->tb_next[0] == 0xffff);
6071	Assert(tb->tb_next[1] == 0xffff);
6072	Assert(tb->jmp_next[0] == NULL);
6073	Assert(tb->jmp_next[1] == NULL);
6074	Assert(tb->jmp_first == NULL); */
6075
6076	RAWEx_ProfileStop(env, STATS_EMULATE_SINGLE_INSTR);
6077
6078	/*
6079	* Execute the next instruction when we encounter instruction fusing.
6080	*/
6081	if (env->hflags & HF_INHIBIT_IRQ_MASK)
6082	{
6083	Log(("REM: Emulating next instruction due to instruction fusing (HF_INHIBIT_IRQ_MASK) at %RGv\n", env->eip));
6084	env->hflags &= ~HF_INHIBIT_IRQ_MASK;
6085	emulate_single_instr(env);
6086	}
6087
6088	env = savedenv;
6089	return 0;
6090	}
6091
6092	/**
6093	* Correctly loads a new ldtr selector.
6094	*
6095	* @param env1 CPU environment.
6096	* @param selector Selector to load.
6097	*/
6098	void sync_ldtr(CPUX86State *env1, int selector)
6099	{
6100	CPUX86State *saved_env = env;
6101	if (setjmp(env1->jmp_env) == 0)
6102	{
6103	env = env1;
6104	helper_lldt(selector);
6105	env = saved_env;
6106	}
6107	else
6108	{
6109	env = saved_env;
6110	#ifdef VBOX_STRICT
6111	cpu_abort(env1, "sync_ldtr: selector=%#x\n", selector);
6112	#endif
6113	}
6114	}
6115
6116	int get_ss_esp_from_tss_raw(CPUX86State env1, uint32_t ss_ptr,
6117	uint32_t *esp_ptr, int dpl)
6118	{
6119	int type, index, shift;
6120
6121	CPUX86State *savedenv = env;
6122	env = env1;
6123
6124	if (!(env->tr.flags & DESC_P_MASK))
6125	cpu_abort(env, "invalid tss");
6126	type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
6127	if ((type & 7) != 3)
6128	cpu_abort(env, "invalid tss type %d", type);
6129	shift = type >> 3;
6130	index = (dpl * 4 + 2) << shift;
6131	if (index + (4 << shift) - 1 > env->tr.limit)
6132	{
6133	env = savedenv;
6134	return 0;
6135	}
6136	//raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
6137
6138	if (shift == 0) {
6139	*esp_ptr = lduw_kernel(env->tr.base + index);
6140	*ss_ptr = lduw_kernel(env->tr.base + index + 2);
6141	} else {
6142	*esp_ptr = ldl_kernel(env->tr.base + index);
6143	*ss_ptr = lduw_kernel(env->tr.base + index + 4);
6144	}
6145
6146	env = savedenv;
6147	return 1;
6148	}
6149
6150	//*****************************************************************************
6151	// Needs to be at the bottom of the file (overriding macros)
6152
6153	static inline CPU86_LDouble helper_fldt_raw(uint8_t *ptr)
6154	{
6155	#ifdef USE_X86LDOUBLE
6156	CPU86_LDoubleU tmp;
6157	tmp.l.lower = (uint64_t const )ptr;
6158	tmp.l.upper = (uint16_t const )(ptr + 8);
6159	return tmp.d;
6160	#else
6161	# error "Busted FPU saving/restoring!"
6162	return (CPU86_LDouble )ptr;
6163	#endif
6164	}
6165
6166	static inline void helper_fstt_raw(CPU86_LDouble f, uint8_t *ptr)
6167	{
6168	#ifdef USE_X86LDOUBLE
6169	CPU86_LDoubleU tmp;
6170	tmp.d = f;
6171	(uint64_t )(ptr + 0) = tmp.l.lower;
6172	(uint16_t )(ptr + 8) = tmp.l.upper;
6173	(uint16_t )(ptr + 10) = 0;
6174	(uint32_t )(ptr + 12) = 0;
6175	AssertCompile(sizeof(long double) > 8);
6176	#else
6177	# error "Busted FPU saving/restoring!"
6178	(CPU86_LDouble )ptr = f;
6179	#endif
6180	}
6181
6182	#undef stw
6183	#undef stl
6184	#undef stq
6185	#define stw(a,b) (uint16_t )(a) = (uint16_t)(b)
6186	#define stl(a,b) (uint32_t )(a) = (uint32_t)(b)
6187	#define stq(a,b) (uint64_t )(a) = (uint64_t)(b)
6188
6189	//*****************************************************************************
6190	void restore_raw_fp_state(CPUX86State env, uint8_t ptr)
6191	{
6192	int fpus, fptag, i, nb_xmm_regs;
6193	CPU86_LDouble tmp;
6194	uint8_t *addr;
6195	int data64 = !!(env->hflags & HF_LMA_MASK);
6196
6197	if (env->cpuid_features & CPUID_FXSR)
6198	{
6199	fpus = (env->fpus & ~0x3800) \| (env->fpstt & 0x7) << 11;
6200	fptag = 0;
6201	for(i = 0; i < 8; i++) {
6202	fptag \|= (env->fptags[i] << i);
6203	}
6204	stw(ptr, env->fpuc);
6205	stw(ptr + 2, fpus);
6206	stw(ptr + 4, fptag ^ 0xff);
6207
6208	addr = ptr + 0x20;
6209	for(i = 0;i < 8; i++) {
6210	tmp = ST(i);
6211	helper_fstt_raw(tmp, addr);
6212	addr += 16;
6213	}
6214
6215	if (env->cr[4] & CR4_OSFXSR_MASK) {
6216	/* XXX: finish it */
6217	stl(ptr + 0x18, env->mxcsr); /* mxcsr */
6218	stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */
6219	nb_xmm_regs = 8 << data64;
6220	addr = ptr + 0xa0;
6221	for(i = 0; i < nb_xmm_regs; i++) {
6222	#if __GNUC__ < 4
6223	stq(addr, env->xmm_regs[i].XMM_Q(0));
6224	stq(addr + 8, env->xmm_regs[i].XMM_Q(1));
6225	#else /* VBOX + __GNUC__ >= 4: gcc 4.x compiler bug - it runs out of registers for the 64-bit value. */
6226	stl(addr, env->xmm_regs[i].XMM_L(0));
6227	stl(addr + 4, env->xmm_regs[i].XMM_L(1));
6228	stl(addr + 8, env->xmm_regs[i].XMM_L(2));
6229	stl(addr + 12, env->xmm_regs[i].XMM_L(3));
6230	#endif
6231	addr += 16;
6232	}
6233	}
6234	}
6235	else
6236	{
6237	PX86FPUSTATE fp = (PX86FPUSTATE)ptr;
6238	int fptag;
6239
6240	fp->FCW = env->fpuc;
6241	fp->FSW = (env->fpus & ~0x3800) \| (env->fpstt & 0x7) << 11;
6242	fptag = 0;
6243	for (i=7; i>=0; i--) {
6244	fptag <<= 2;
6245	if (env->fptags[i]) {
6246	fptag \|= 3;
6247	} else {
6248	/* the FPU automatically computes it */
6249	}
6250	}
6251	fp->FTW = fptag;
6252
6253	for(i = 0;i < 8; i++) {
6254	tmp = ST(i);
6255	helper_fstt_raw(tmp, &fp->regs[i].au8[0]);
6256	}
6257	}
6258	}
6259
6260	//*****************************************************************************
6261	#undef lduw
6262	#undef ldl
6263	#undef ldq
6264	#define lduw(a) (uint16_t )(a)
6265	#define ldl(a) (uint32_t )(a)
6266	#define ldq(a) (uint64_t )(a)
6267	//*****************************************************************************
6268	void save_raw_fp_state(CPUX86State env, uint8_t ptr)
6269	{
6270	int i, fpus, fptag, nb_xmm_regs;
6271	CPU86_LDouble tmp;
6272	uint8_t *addr;
6273	int data64 = !!(env->hflags & HF_LMA_MASK); /* don't use HF_CS64_MASK here as cs hasn't been synced when this function is called. */
6274
6275	if (env->cpuid_features & CPUID_FXSR)
6276	{
6277	env->fpuc = lduw(ptr);
6278	fpus = lduw(ptr + 2);
6279	fptag = lduw(ptr + 4);
6280	env->fpstt = (fpus >> 11) & 7;
6281	env->fpus = fpus & ~0x3800;
6282	fptag ^= 0xff;
6283	for(i = 0;i < 8; i++) {
6284	env->fptags[i] = ((fptag >> i) & 1);
6285	}
6286
6287	addr = ptr + 0x20;
6288	for(i = 0;i < 8; i++) {
6289	tmp = helper_fldt_raw(addr);
6290	ST(i) = tmp;
6291	addr += 16;
6292	}
6293
6294	if (env->cr[4] & CR4_OSFXSR_MASK) {
6295	/* XXX: finish it, endianness */
6296	env->mxcsr = ldl(ptr + 0x18);
6297	//ldl(ptr + 0x1c);
6298	nb_xmm_regs = 8 << data64;
6299	addr = ptr + 0xa0;
6300	for(i = 0; i < nb_xmm_regs; i++) {
6301	#if HC_ARCH_BITS == 32
6302	/* this is a workaround for http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35135 */
6303	env->xmm_regs[i].XMM_L(0) = ldl(addr);
6304	env->xmm_regs[i].XMM_L(1) = ldl(addr + 4);
6305	env->xmm_regs[i].XMM_L(2) = ldl(addr + 8);
6306	env->xmm_regs[i].XMM_L(3) = ldl(addr + 12);
6307	#else
6308	env->xmm_regs[i].XMM_Q(0) = ldq(addr);
6309	env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8);
6310	#endif
6311	addr += 16;
6312	}
6313	}
6314	}
6315	else
6316	{
6317	PX86FPUSTATE fp = (PX86FPUSTATE)ptr;
6318	int fptag, j;
6319
6320	env->fpuc = fp->FCW;
6321	env->fpstt = (fp->FSW >> 11) & 7;
6322	env->fpus = fp->FSW & ~0x3800;
6323	fptag = fp->FTW;
6324	for(i = 0;i < 8; i++) {
6325	env->fptags[i] = ((fptag & 3) == 3);
6326	fptag >>= 2;
6327	}
6328	j = env->fpstt;
6329	for(i = 0;i < 8; i++) {
6330	tmp = helper_fldt_raw(&fp->regs[i].au8[0]);
6331	ST(i) = tmp;
6332	}
6333	}
6334	}
6335	//*****************************************************************************
6336	//*****************************************************************************
6337
6338	#endif /* VBOX */
6339
6340	/* Secure Virtual Machine helpers */
6341
6342	#if defined(CONFIG_USER_ONLY)
6343
6344	void helper_vmrun(int aflag, int next_eip_addend)
6345	{
6346	}
6347	void helper_vmmcall(void)
6348	{
6349	}
6350	void helper_vmload(int aflag)
6351	{
6352	}
6353	void helper_vmsave(int aflag)
6354	{
6355	}
6356	void helper_stgi(void)
6357	{
6358	}
6359	void helper_clgi(void)
6360	{
6361	}
6362	void helper_skinit(void)
6363	{
6364	}
6365	void helper_invlpga(int aflag)
6366	{
6367	}
6368	void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
6369	{
6370	}
6371	void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
6372	{
6373	}
6374
6375	void helper_svm_check_io(uint32_t port, uint32_t param,
6376	uint32_t next_eip_addend)
6377	{
6378	}
6379	#else
6380
6381	static inline void svm_save_seg(target_phys_addr_t addr,
6382	const SegmentCache *sc)
6383	{
6384	stw_phys(addr + offsetof(struct vmcb_seg, selector),
6385	sc->selector);
6386	stq_phys(addr + offsetof(struct vmcb_seg, base),
6387	sc->base);
6388	stl_phys(addr + offsetof(struct vmcb_seg, limit),
6389	sc->limit);
6390	stw_phys(addr + offsetof(struct vmcb_seg, attrib),
6391	((sc->flags >> 8) & 0xff) \| ((sc->flags >> 12) & 0x0f00));
6392	}
6393
6394	static inline void svm_load_seg(target_phys_addr_t addr, SegmentCache *sc)
6395	{
6396	unsigned int flags;
6397
6398	sc->selector = lduw_phys(addr + offsetof(struct vmcb_seg, selector));
6399	sc->base = ldq_phys(addr + offsetof(struct vmcb_seg, base));
6400	sc->limit = ldl_phys(addr + offsetof(struct vmcb_seg, limit));
6401	flags = lduw_phys(addr + offsetof(struct vmcb_seg, attrib));
6402	sc->flags = ((flags & 0xff) << 8) \| ((flags & 0x0f00) << 12);
6403	}
6404
6405	static inline void svm_load_seg_cache(target_phys_addr_t addr,
6406	CPUState *env, int seg_reg)
6407	{
6408	SegmentCache sc1, *sc = &sc1;
6409	svm_load_seg(addr, sc);
6410	cpu_x86_load_seg_cache(env, seg_reg, sc->selector,
6411	sc->base, sc->limit, sc->flags);
6412	}
6413
6414	void helper_vmrun(int aflag, int next_eip_addend)
6415	{
6416	target_ulong addr;
6417	uint32_t event_inj;
6418	uint32_t int_ctl;
6419
6420	helper_svm_check_intercept_param(SVM_EXIT_VMRUN, 0);
6421
6422	if (aflag == 2)
6423	addr = EAX;
6424	else
6425	addr = (uint32_t)EAX;
6426
6427	qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmrun! " TARGET_FMT_lx "\n", addr);
6428
6429	env->vm_vmcb = addr;
6430
6431	/* save the current CPU state in the hsave page */
6432	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
6433	stl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
6434
6435	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base), env->idt.base);
6436	stl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
6437
6438	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0), env->cr[0]);
6439	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]);
6440	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]);
6441	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]);
6442	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]);
6443	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]);
6444
6445	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer), env->efer);
6446	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags), compute_eflags());
6447
6448	svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.es),
6449	&env->segs[R_ES]);
6450	svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.cs),
6451	&env->segs[R_CS]);
6452	svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ss),
6453	&env->segs[R_SS]);
6454	svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ds),
6455	&env->segs[R_DS]);
6456
6457	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip),
6458	EIP + next_eip_addend);
6459	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
6460	stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
6461
6462	/* load the interception bitmaps so we do not need to access the
6463	vmcb in svm mode */
6464	env->intercept = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept));
6465	env->intercept_cr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_read));
6466	env->intercept_cr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_write));
6467	env->intercept_dr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_read));
6468	env->intercept_dr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_write));
6469	env->intercept_exceptions = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_exceptions));
6470
6471	/* enable intercepts */
6472	env->hflags \|= HF_SVMI_MASK;
6473
6474	env->tsc_offset = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.tsc_offset));
6475
6476	env->gdt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base));
6477	env->gdt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit));
6478
6479	env->idt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base));
6480	env->idt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit));
6481
6482	/* clear exit_info_2 so we behave like the real hardware */
6483	stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), 0);
6484
6485	cpu_x86_update_cr0(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0)));
6486	cpu_x86_update_cr4(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4)));
6487	cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
6488	env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2));
6489	int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
6490	env->hflags2 &= ~(HF2_HIF_MASK \| HF2_VINTR_MASK);
6491	if (int_ctl & V_INTR_MASKING_MASK) {
6492	env->v_tpr = int_ctl & V_TPR_MASK;
6493	env->hflags2 \|= HF2_VINTR_MASK;
6494	if (env->eflags & IF_MASK)
6495	env->hflags2 \|= HF2_HIF_MASK;
6496	}
6497
6498	cpu_load_efer(env,
6499	ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer)));
6500	env->eflags = 0;
6501	load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
6502	~(CC_O \| CC_S \| CC_Z \| CC_A \| CC_P \| CC_C \| DF_MASK));
6503	CC_OP = CC_OP_EFLAGS;
6504
6505	svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.es),
6506	env, R_ES);
6507	svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.cs),
6508	env, R_CS);
6509	svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ss),
6510	env, R_SS);
6511	svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ds),
6512	env, R_DS);
6513
6514	EIP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip));
6515	env->eip = EIP;
6516	ESP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp));
6517	EAX = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax));
6518	env->dr[7] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7));
6519	env->dr[6] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6));
6520	cpu_x86_set_cpl(env, ldub_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl)));
6521
6522	/* FIXME: guest state consistency checks */
6523
6524	switch(ldub_phys(env->vm_vmcb + offsetof(struct vmcb, control.tlb_ctl))) {
6525	case TLB_CONTROL_DO_NOTHING:
6526	break;
6527	case TLB_CONTROL_FLUSH_ALL_ASID:
6528	/* FIXME: this is not 100% correct but should work for now */
6529	tlb_flush(env, 1);
6530	break;
6531	}
6532
6533	env->hflags2 \|= HF2_GIF_MASK;
6534
6535	if (int_ctl & V_IRQ_MASK) {
6536	env->interrupt_request \|= CPU_INTERRUPT_VIRQ;
6537	}
6538
6539	/* maybe we need to inject an event */
6540	event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
6541	if (event_inj & SVM_EVTINJ_VALID) {
6542	uint8_t vector = event_inj & SVM_EVTINJ_VEC_MASK;
6543	uint16_t valid_err = event_inj & SVM_EVTINJ_VALID_ERR;
6544	uint32_t event_inj_err = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err));
6545
6546	qemu_log_mask(CPU_LOG_TB_IN_ASM, "Injecting(%#hx): ", valid_err);
6547	/* FIXME: need to implement valid_err */
6548	switch (event_inj & SVM_EVTINJ_TYPE_MASK) {
6549	case SVM_EVTINJ_TYPE_INTR:
6550	env->exception_index = vector;
6551	env->error_code = event_inj_err;
6552	env->exception_is_int = 0;
6553	env->exception_next_eip = -1;
6554	qemu_log_mask(CPU_LOG_TB_IN_ASM, "INTR");
6555	/* XXX: is it always correct ? */
6556	do_interrupt(vector, 0, 0, 0, 1);
6557	break;
6558	case SVM_EVTINJ_TYPE_NMI:
6559	env->exception_index = EXCP02_NMI;
6560	env->error_code = event_inj_err;
6561	env->exception_is_int = 0;
6562	env->exception_next_eip = EIP;
6563	qemu_log_mask(CPU_LOG_TB_IN_ASM, "NMI");
6564	cpu_loop_exit();
6565	break;
6566	case SVM_EVTINJ_TYPE_EXEPT:
6567	env->exception_index = vector;
6568	env->error_code = event_inj_err;
6569	env->exception_is_int = 0;
6570	env->exception_next_eip = -1;
6571	qemu_log_mask(CPU_LOG_TB_IN_ASM, "EXEPT");
6572	cpu_loop_exit();
6573	break;
6574	case SVM_EVTINJ_TYPE_SOFT:
6575	env->exception_index = vector;
6576	env->error_code = event_inj_err;
6577	env->exception_is_int = 1;
6578	env->exception_next_eip = EIP;
6579	qemu_log_mask(CPU_LOG_TB_IN_ASM, "SOFT");
6580	cpu_loop_exit();
6581	break;
6582	}
6583	qemu_log_mask(CPU_LOG_TB_IN_ASM, " %#x %#x\n", env->exception_index, env->error_code);
6584	}
6585	}
6586
6587	void helper_vmmcall(void)
6588	{
6589	helper_svm_check_intercept_param(SVM_EXIT_VMMCALL, 0);
6590	raise_exception(EXCP06_ILLOP);
6591	}
6592
6593	void helper_vmload(int aflag)
6594	{
6595	target_ulong addr;
6596	helper_svm_check_intercept_param(SVM_EXIT_VMLOAD, 0);
6597
6598	if (aflag == 2)
6599	addr = EAX;
6600	else
6601	addr = (uint32_t)EAX;
6602
6603	qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmload! " TARGET_FMT_lx "\nFS: %016" PRIx64 " \| " TARGET_FMT_lx "\n",
6604	addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
6605	env->segs[R_FS].base);
6606
6607	svm_load_seg_cache(addr + offsetof(struct vmcb, save.fs),
6608	env, R_FS);
6609	svm_load_seg_cache(addr + offsetof(struct vmcb, save.gs),
6610	env, R_GS);
6611	svm_load_seg(addr + offsetof(struct vmcb, save.tr),
6612	&env->tr);
6613	svm_load_seg(addr + offsetof(struct vmcb, save.ldtr),
6614	&env->ldt);
6615
6616	#ifdef TARGET_X86_64
6617	env->kernelgsbase = ldq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base));
6618	env->lstar = ldq_phys(addr + offsetof(struct vmcb, save.lstar));
6619	env->cstar = ldq_phys(addr + offsetof(struct vmcb, save.cstar));
6620	env->fmask = ldq_phys(addr + offsetof(struct vmcb, save.sfmask));
6621	#endif
6622	env->star = ldq_phys(addr + offsetof(struct vmcb, save.star));
6623	env->sysenter_cs = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_cs));
6624	env->sysenter_esp = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_esp));
6625	env->sysenter_eip = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_eip));
6626	}
6627
6628	void helper_vmsave(int aflag)
6629	{
6630	target_ulong addr;
6631	helper_svm_check_intercept_param(SVM_EXIT_VMSAVE, 0);
6632
6633	if (aflag == 2)
6634	addr = EAX;
6635	else
6636	addr = (uint32_t)EAX;
6637
6638	qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmsave! " TARGET_FMT_lx "\nFS: %016" PRIx64 " \| " TARGET_FMT_lx "\n",
6639	addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
6640	env->segs[R_FS].base);
6641
6642	svm_save_seg(addr + offsetof(struct vmcb, save.fs),
6643	&env->segs[R_FS]);
6644	svm_save_seg(addr + offsetof(struct vmcb, save.gs),
6645	&env->segs[R_GS]);
6646	svm_save_seg(addr + offsetof(struct vmcb, save.tr),
6647	&env->tr);
6648	svm_save_seg(addr + offsetof(struct vmcb, save.ldtr),
6649	&env->ldt);
6650
6651	#ifdef TARGET_X86_64
6652	stq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base), env->kernelgsbase);
6653	stq_phys(addr + offsetof(struct vmcb, save.lstar), env->lstar);
6654	stq_phys(addr + offsetof(struct vmcb, save.cstar), env->cstar);
6655	stq_phys(addr + offsetof(struct vmcb, save.sfmask), env->fmask);
6656	#endif
6657	stq_phys(addr + offsetof(struct vmcb, save.star), env->star);
6658	stq_phys(addr + offsetof(struct vmcb, save.sysenter_cs), env->sysenter_cs);
6659	stq_phys(addr + offsetof(struct vmcb, save.sysenter_esp), env->sysenter_esp);
6660	stq_phys(addr + offsetof(struct vmcb, save.sysenter_eip), env->sysenter_eip);
6661	}
6662
6663	void helper_stgi(void)
6664	{
6665	helper_svm_check_intercept_param(SVM_EXIT_STGI, 0);
6666	env->hflags2 \|= HF2_GIF_MASK;
6667	}
6668
6669	void helper_clgi(void)
6670	{
6671	helper_svm_check_intercept_param(SVM_EXIT_CLGI, 0);
6672	env->hflags2 &= ~HF2_GIF_MASK;
6673	}
6674
6675	void helper_skinit(void)
6676	{
6677	helper_svm_check_intercept_param(SVM_EXIT_SKINIT, 0);
6678	/* XXX: not implemented */
6679	raise_exception(EXCP06_ILLOP);
6680	}
6681
6682	void helper_invlpga(int aflag)
6683	{
6684	target_ulong addr;
6685	helper_svm_check_intercept_param(SVM_EXIT_INVLPGA, 0);
6686
6687	if (aflag == 2)
6688	addr = EAX;
6689	else
6690	addr = (uint32_t)EAX;
6691
6692	/* XXX: could use the ASID to see if it is needed to do the
6693	flush */
6694	tlb_flush_page(env, addr);
6695	}
6696
6697	void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
6698	{
6699	if (likely(!(env->hflags & HF_SVMI_MASK)))
6700	return;
6701	#ifndef VBOX
6702	switch(type) {
6703	case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR0 + 8:
6704	if (env->intercept_cr_read & (1 << (type - SVM_EXIT_READ_CR0))) {
6705	helper_vmexit(type, param);
6706	}
6707	break;
6708	case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR0 + 8:
6709	if (env->intercept_cr_write & (1 << (type - SVM_EXIT_WRITE_CR0))) {
6710	helper_vmexit(type, param);
6711	}
6712	break;
6713	case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR0 + 7:
6714	if (env->intercept_dr_read & (1 << (type - SVM_EXIT_READ_DR0))) {
6715	helper_vmexit(type, param);
6716	}
6717	break;
6718	case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR0 + 7:
6719	if (env->intercept_dr_write & (1 << (type - SVM_EXIT_WRITE_DR0))) {
6720	helper_vmexit(type, param);
6721	}
6722	break;
6723	case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 31:
6724	if (env->intercept_exceptions & (1 << (type - SVM_EXIT_EXCP_BASE))) {
6725	helper_vmexit(type, param);
6726	}
6727	break;
6728	case SVM_EXIT_MSR:
6729	if (env->intercept & (1ULL << (SVM_EXIT_MSR - SVM_EXIT_INTR))) {
6730	/* FIXME: this should be read in at vmrun (faster this way?) */
6731	uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.msrpm_base_pa));
6732	uint32_t t0, t1;
6733	switch((uint32_t)ECX) {
6734	case 0 ... 0x1fff:
6735	t0 = (ECX * 2) % 8;
6736	t1 = ECX / 8;
6737	break;
6738	case 0xc0000000 ... 0xc0001fff:
6739	t0 = (8192 + ECX - 0xc0000000) * 2;
6740	t1 = (t0 / 8);
6741	t0 %= 8;
6742	break;
6743	case 0xc0010000 ... 0xc0011fff:
6744	t0 = (16384 + ECX - 0xc0010000) * 2;
6745	t1 = (t0 / 8);
6746	t0 %= 8;
6747	break;
6748	default:
6749	helper_vmexit(type, param);
6750	t0 = 0;
6751	t1 = 0;
6752	break;
6753	}
6754	if (ldub_phys(addr + t1) & ((1 << param) << t0))
6755	helper_vmexit(type, param);
6756	}
6757	break;
6758	default:
6759	if (env->intercept & (1ULL << (type - SVM_EXIT_INTR))) {
6760	helper_vmexit(type, param);
6761	}
6762	break;
6763	}
6764	#else /* VBOX */
6765	AssertMsgFailed(("We shouldn't be here, HM supported differently!"));
6766	#endif /* VBOX */
6767	}
6768
6769	void helper_svm_check_io(uint32_t port, uint32_t param,
6770	uint32_t next_eip_addend)
6771	{
6772	if (env->intercept & (1ULL << (SVM_EXIT_IOIO - SVM_EXIT_INTR))) {
6773	/* FIXME: this should be read in at vmrun (faster this way?) */
6774	uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.iopm_base_pa));
6775	uint16_t mask = (1 << ((param >> 4) & 7)) - 1;
6776	if(lduw_phys(addr + port / 8) & (mask << (port & 7))) {
6777	/* next EIP */
6778	stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
6779	env->eip + next_eip_addend);
6780	helper_vmexit(SVM_EXIT_IOIO, param \| (port << 16));
6781	}
6782	}
6783	}
6784
6785	/* Note: currently only 32 bits of exit_code are used */
6786	void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
6787	{
6788	uint32_t int_ctl;
6789
6790	qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmexit(%08x, %016" PRIx64 ", %016" PRIx64 ", " TARGET_FMT_lx ")!\n",
6791	exit_code, exit_info_1,
6792	ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2)),
6793	EIP);
6794
6795	if(env->hflags & HF_INHIBIT_IRQ_MASK) {
6796	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), SVM_INTERRUPT_SHADOW_MASK);
6797	env->hflags &= ~HF_INHIBIT_IRQ_MASK;
6798	} else {
6799	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), 0);
6800	}
6801
6802	/* Save the VM state in the vmcb */
6803	svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.es),
6804	&env->segs[R_ES]);
6805	svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.cs),
6806	&env->segs[R_CS]);
6807	svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.ss),
6808	&env->segs[R_SS]);
6809	svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.ds),
6810	&env->segs[R_DS]);
6811
6812	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
6813	stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
6814
6815	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base), env->idt.base);
6816	stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
6817
6818	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer), env->efer);
6819	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0), env->cr[0]);
6820	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2), env->cr[2]);
6821	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3), env->cr[3]);
6822	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4), env->cr[4]);
6823
6824	int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
6825	int_ctl &= ~(V_TPR_MASK \| V_IRQ_MASK);
6826	int_ctl \|= env->v_tpr & V_TPR_MASK;
6827	if (env->interrupt_request & CPU_INTERRUPT_VIRQ)
6828	int_ctl \|= V_IRQ_MASK;
6829	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
6830
6831	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags), compute_eflags());
6832	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip), env->eip);
6833	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp), ESP);
6834	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax), EAX);
6835	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7), env->dr[7]);
6836	stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6), env->dr[6]);
6837	stb_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl), env->hflags & HF_CPL_MASK);
6838
6839	/* Reload the host state from vm_hsave */
6840	env->hflags2 &= ~(HF2_HIF_MASK \| HF2_VINTR_MASK);
6841	env->hflags &= ~HF_SVMI_MASK;
6842	env->intercept = 0;
6843	env->intercept_exceptions = 0;
6844	env->interrupt_request &= ~CPU_INTERRUPT_VIRQ;
6845	env->tsc_offset = 0;
6846
6847	env->gdt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base));
6848	env->gdt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit));
6849
6850	env->idt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base));
6851	env->idt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit));
6852
6853	cpu_x86_update_cr0(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0)) \| CR0_PE_MASK);
6854	cpu_x86_update_cr4(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4)));
6855	cpu_x86_update_cr3(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3)));
6856	/* we need to set the efer after the crs so the hidden flags get
6857	set properly */
6858	cpu_load_efer(env,
6859	ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer)));
6860	env->eflags = 0;
6861	load_eflags(ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags)),
6862	~(CC_O \| CC_S \| CC_Z \| CC_A \| CC_P \| CC_C \| DF_MASK));
6863	CC_OP = CC_OP_EFLAGS;
6864
6865	svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.es),
6866	env, R_ES);
6867	svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.cs),
6868	env, R_CS);
6869	svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.ss),
6870	env, R_SS);
6871	svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.ds),
6872	env, R_DS);
6873
6874	EIP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip));
6875	ESP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp));
6876	EAX = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax));
6877
6878	env->dr[6] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6));
6879	env->dr[7] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7));
6880
6881	/* other setups */
6882	cpu_x86_set_cpl(env, 0);
6883	stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_code), exit_code);
6884	stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_1), exit_info_1);
6885
6886	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_int_info),
6887	ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj)));
6888	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_int_info_err),
6889	ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err)));
6890	stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), 0);
6891
6892	env->hflags2 &= ~HF2_GIF_MASK;
6893	/* FIXME: Resets the current ASID register to zero (host ASID). */
6894
6895	/* Clears the V_IRQ and V_INTR_MASKING bits inside the processor. */
6896
6897	/* Clears the TSC_OFFSET inside the processor. */
6898
6899	/* If the host is in PAE mode, the processor reloads the host's PDPEs
6900	from the page table indicated the host's CR3. If the PDPEs contain
6901	illegal state, the processor causes a shutdown. */
6902
6903	/* Forces CR0.PE = 1, RFLAGS.VM = 0. */
6904	env->cr[0] \|= CR0_PE_MASK;
6905	env->eflags &= ~VM_MASK;
6906
6907	/* Disables all breakpoints in the host DR7 register. */
6908
6909	/* Checks the reloaded host state for consistency. */
6910
6911	/* If the host's rIP reloaded by #VMEXIT is outside the limit of the
6912	host's code segment or non-canonical (in the case of long mode), a
6913	#GP fault is delivered inside the host.) */
6914
6915	/* remove any pending exception */
6916	env->exception_index = -1;
6917	env->error_code = 0;
6918	env->old_exception = -1;
6919
6920	cpu_loop_exit();
6921	}
6922
6923	#endif
6924
6925	/* MMX/SSE */
6926	/* XXX: optimize by storing fptt and fptags in the static cpu state */
6927	void helper_enter_mmx(void)
6928	{
6929	env->fpstt = 0;
6930	(uint32_t )(env->fptags) = 0;
6931	(uint32_t )(env->fptags + 4) = 0;
6932	}
6933
6934	void helper_emms(void)
6935	{
6936	/* set to empty state */
6937	(uint32_t )(env->fptags) = 0x01010101;
6938	(uint32_t )(env->fptags + 4) = 0x01010101;
6939	}
6940
6941	/* XXX: suppress */
6942	void helper_movq(void d, void s)
6943	{
6944	(uint64_t )d = (uint64_t )s;
6945	}
6946
6947	#define SHIFT 0
6948	#include "ops_sse.h"
6949
6950	#define SHIFT 1
6951	#include "ops_sse.h"
6952
6953	#define SHIFT 0
6954	#include "helper_template.h"
6955	#undef SHIFT
6956
6957	#define SHIFT 1
6958	#include "helper_template.h"
6959	#undef SHIFT
6960
6961	#define SHIFT 2
6962	#include "helper_template.h"
6963	#undef SHIFT
6964
6965	#ifdef TARGET_X86_64
6966
6967	#define SHIFT 3
6968	#include "helper_template.h"
6969	#undef SHIFT
6970
6971	#endif
6972
6973	/* bit operations */
6974	target_ulong helper_bsf(target_ulong t0)
6975	{
6976	int count;
6977	target_ulong res;
6978
6979	res = t0;
6980	count = 0;
6981	while ((res & 1) == 0) {
6982	count++;
6983	res >>= 1;
6984	}
6985	return count;
6986	}
6987
6988	target_ulong helper_lzcnt(target_ulong t0, int wordsize)
6989	{
6990	int count;
6991	target_ulong res, mask;
6992
6993	if (wordsize > 0 && t0 == 0) {
6994	return wordsize;
6995	}
6996	res = t0;
6997	count = TARGET_LONG_BITS - 1;
6998	mask = (target_ulong)1 << (TARGET_LONG_BITS - 1);
6999	while ((res & mask) == 0) {
7000	count--;
7001	res <<= 1;
7002	}
7003	if (wordsize > 0) {
7004	return wordsize - 1 - count;
7005	}
7006	return count;
7007	}
7008
7009	target_ulong helper_bsr(target_ulong t0)
7010	{
7011	return helper_lzcnt(t0, 0);
7012	}
7013
7014	static int compute_all_eflags(void)
7015	{
7016	return CC_SRC;
7017	}
7018
7019	static int compute_c_eflags(void)
7020	{
7021	return CC_SRC & CC_C;
7022	}
7023
7024	uint32_t helper_cc_compute_all(int op)
7025	{
7026	switch (op) {
7027	default: /* should never happen */ return 0;
7028
7029	case CC_OP_EFLAGS: return compute_all_eflags();
7030
7031	case CC_OP_MULB: return compute_all_mulb();
7032	case CC_OP_MULW: return compute_all_mulw();
7033	case CC_OP_MULL: return compute_all_mull();
7034
7035	case CC_OP_ADDB: return compute_all_addb();
7036	case CC_OP_ADDW: return compute_all_addw();
7037	case CC_OP_ADDL: return compute_all_addl();
7038
7039	case CC_OP_ADCB: return compute_all_adcb();
7040	case CC_OP_ADCW: return compute_all_adcw();
7041	case CC_OP_ADCL: return compute_all_adcl();
7042
7043	case CC_OP_SUBB: return compute_all_subb();
7044	case CC_OP_SUBW: return compute_all_subw();
7045	case CC_OP_SUBL: return compute_all_subl();
7046
7047	case CC_OP_SBBB: return compute_all_sbbb();
7048	case CC_OP_SBBW: return compute_all_sbbw();
7049	case CC_OP_SBBL: return compute_all_sbbl();
7050
7051	case CC_OP_LOGICB: return compute_all_logicb();
7052	case CC_OP_LOGICW: return compute_all_logicw();
7053	case CC_OP_LOGICL: return compute_all_logicl();
7054
7055	case CC_OP_INCB: return compute_all_incb();
7056	case CC_OP_INCW: return compute_all_incw();
7057	case CC_OP_INCL: return compute_all_incl();
7058
7059	case CC_OP_DECB: return compute_all_decb();
7060	case CC_OP_DECW: return compute_all_decw();
7061	case CC_OP_DECL: return compute_all_decl();
7062
7063	case CC_OP_SHLB: return compute_all_shlb();
7064	case CC_OP_SHLW: return compute_all_shlw();
7065	case CC_OP_SHLL: return compute_all_shll();
7066
7067	case CC_OP_SARB: return compute_all_sarb();
7068	case CC_OP_SARW: return compute_all_sarw();
7069	case CC_OP_SARL: return compute_all_sarl();
7070
7071	#ifdef TARGET_X86_64
7072	case CC_OP_MULQ: return compute_all_mulq();
7073
7074	case CC_OP_ADDQ: return compute_all_addq();
7075
7076	case CC_OP_ADCQ: return compute_all_adcq();
7077
7078	case CC_OP_SUBQ: return compute_all_subq();
7079
7080	case CC_OP_SBBQ: return compute_all_sbbq();
7081
7082	case CC_OP_LOGICQ: return compute_all_logicq();
7083
7084	case CC_OP_INCQ: return compute_all_incq();
7085
7086	case CC_OP_DECQ: return compute_all_decq();
7087
7088	case CC_OP_SHLQ: return compute_all_shlq();
7089
7090	case CC_OP_SARQ: return compute_all_sarq();
7091	#endif
7092	}
7093	}
7094
7095	uint32_t helper_cc_compute_c(int op)
7096	{
7097	switch (op) {
7098	default: /* should never happen */ return 0;
7099
7100	case CC_OP_EFLAGS: return compute_c_eflags();
7101
7102	case CC_OP_MULB: return compute_c_mull();
7103	case CC_OP_MULW: return compute_c_mull();
7104	case CC_OP_MULL: return compute_c_mull();
7105
7106	case CC_OP_ADDB: return compute_c_addb();
7107	case CC_OP_ADDW: return compute_c_addw();
7108	case CC_OP_ADDL: return compute_c_addl();
7109
7110	case CC_OP_ADCB: return compute_c_adcb();
7111	case CC_OP_ADCW: return compute_c_adcw();
7112	case CC_OP_ADCL: return compute_c_adcl();
7113
7114	case CC_OP_SUBB: return compute_c_subb();
7115	case CC_OP_SUBW: return compute_c_subw();
7116	case CC_OP_SUBL: return compute_c_subl();
7117
7118	case CC_OP_SBBB: return compute_c_sbbb();
7119	case CC_OP_SBBW: return compute_c_sbbw();
7120	case CC_OP_SBBL: return compute_c_sbbl();
7121
7122	case CC_OP_LOGICB: return compute_c_logicb();
7123	case CC_OP_LOGICW: return compute_c_logicw();
7124	case CC_OP_LOGICL: return compute_c_logicl();
7125
7126	case CC_OP_INCB: return compute_c_incl();
7127	case CC_OP_INCW: return compute_c_incl();
7128	case CC_OP_INCL: return compute_c_incl();
7129
7130	case CC_OP_DECB: return compute_c_incl();
7131	case CC_OP_DECW: return compute_c_incl();
7132	case CC_OP_DECL: return compute_c_incl();
7133
7134	case CC_OP_SHLB: return compute_c_shlb();
7135	case CC_OP_SHLW: return compute_c_shlw();
7136	case CC_OP_SHLL: return compute_c_shll();
7137
7138	case CC_OP_SARB: return compute_c_sarl();
7139	case CC_OP_SARW: return compute_c_sarl();
7140	case CC_OP_SARL: return compute_c_sarl();
7141
7142	#ifdef TARGET_X86_64
7143	case CC_OP_MULQ: return compute_c_mull();
7144
7145	case CC_OP_ADDQ: return compute_c_addq();
7146
7147	case CC_OP_ADCQ: return compute_c_adcq();
7148
7149	case CC_OP_SUBQ: return compute_c_subq();
7150
7151	case CC_OP_SBBQ: return compute_c_sbbq();
7152
7153	case CC_OP_LOGICQ: return compute_c_logicq();
7154
7155	case CC_OP_INCQ: return compute_c_incl();
7156
7157	case CC_OP_DECQ: return compute_c_incl();
7158
7159	case CC_OP_SHLQ: return compute_c_shlq();
7160
7161	case CC_OP_SARQ: return compute_c_sarl();
7162	#endif
7163	}
7164	}

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source: vbox/trunk/src/recompiler/target-i386/op_helper.c@ 78278

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