root / target-i386 / op_helper.c @ 49a945a3
History | View | Annotate | Download (158.8 kB)
1 |
/*
|
---|---|
2 |
* i386 helpers
|
3 |
*
|
4 |
* Copyright (c) 2003 Fabrice Bellard
|
5 |
*
|
6 |
* This library is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU Lesser General Public
|
8 |
* License as published by the Free Software Foundation; either
|
9 |
* version 2 of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This library is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 |
* Lesser General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU Lesser General Public
|
17 |
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
18 |
*/
|
19 |
#define CPU_NO_GLOBAL_REGS
|
20 |
#include "exec.h" |
21 |
#include "exec-all.h" |
22 |
#include "host-utils.h" |
23 |
|
24 |
//#define DEBUG_PCALL
|
25 |
|
26 |
|
27 |
#ifdef DEBUG_PCALL
|
28 |
# define LOG_PCALL(...) qemu_log_mask(CPU_LOG_PCALL, ## __VA_ARGS__) |
29 |
# define LOG_PCALL_STATE(env) \
|
30 |
log_cpu_state_mask(CPU_LOG_PCALL, (env), X86_DUMP_CCOP) |
31 |
#else
|
32 |
# define LOG_PCALL(...) do { } while (0) |
33 |
# define LOG_PCALL_STATE(env) do { } while (0) |
34 |
#endif
|
35 |
|
36 |
|
37 |
#if 0
|
38 |
#define raise_exception_err(a, b)\
|
39 |
do {\
|
40 |
qemu_log("raise_exception line=%d\n", __LINE__);\
|
41 |
(raise_exception_err)(a, b);\
|
42 |
} while (0)
|
43 |
#endif
|
44 |
|
45 |
static const uint8_t parity_table[256] = { |
46 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
47 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
48 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
49 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
50 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
51 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
52 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
53 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
54 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
55 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
56 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
57 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
58 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
59 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
60 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
61 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
62 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
63 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
64 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
65 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
66 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
67 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
68 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
69 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
70 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
71 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
72 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
73 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
74 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
75 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
76 |
CC_P, 0, 0, CC_P, 0, CC_P, CC_P, 0, |
77 |
0, CC_P, CC_P, 0, CC_P, 0, 0, CC_P, |
78 |
}; |
79 |
|
80 |
/* modulo 17 table */
|
81 |
static const uint8_t rclw_table[32] = { |
82 |
0, 1, 2, 3, 4, 5, 6, 7, |
83 |
8, 9,10,11,12,13,14,15, |
84 |
16, 0, 1, 2, 3, 4, 5, 6, |
85 |
7, 8, 9,10,11,12,13,14, |
86 |
}; |
87 |
|
88 |
/* modulo 9 table */
|
89 |
static const uint8_t rclb_table[32] = { |
90 |
0, 1, 2, 3, 4, 5, 6, 7, |
91 |
8, 0, 1, 2, 3, 4, 5, 6, |
92 |
7, 8, 0, 1, 2, 3, 4, 5, |
93 |
6, 7, 8, 0, 1, 2, 3, 4, |
94 |
}; |
95 |
|
96 |
static const CPU86_LDouble f15rk[7] = |
97 |
{ |
98 |
0.00000000000000000000L, |
99 |
1.00000000000000000000L, |
100 |
3.14159265358979323851L, /*pi*/ |
101 |
0.30102999566398119523L, /*lg2*/ |
102 |
0.69314718055994530943L, /*ln2*/ |
103 |
1.44269504088896340739L, /*l2e*/ |
104 |
3.32192809488736234781L, /*l2t*/ |
105 |
}; |
106 |
|
107 |
/* broken thread support */
|
108 |
|
109 |
static spinlock_t global_cpu_lock = SPIN_LOCK_UNLOCKED;
|
110 |
|
111 |
void helper_lock(void) |
112 |
{ |
113 |
spin_lock(&global_cpu_lock); |
114 |
} |
115 |
|
116 |
void helper_unlock(void) |
117 |
{ |
118 |
spin_unlock(&global_cpu_lock); |
119 |
} |
120 |
|
121 |
void helper_write_eflags(target_ulong t0, uint32_t update_mask)
|
122 |
{ |
123 |
load_eflags(t0, update_mask); |
124 |
} |
125 |
|
126 |
target_ulong helper_read_eflags(void)
|
127 |
{ |
128 |
uint32_t eflags; |
129 |
eflags = helper_cc_compute_all(CC_OP); |
130 |
eflags |= (DF & DF_MASK); |
131 |
eflags |= env->eflags & ~(VM_MASK | RF_MASK); |
132 |
return eflags;
|
133 |
} |
134 |
|
135 |
/* return non zero if error */
|
136 |
static inline int load_segment(uint32_t *e1_ptr, uint32_t *e2_ptr, |
137 |
int selector)
|
138 |
{ |
139 |
SegmentCache *dt; |
140 |
int index;
|
141 |
target_ulong ptr; |
142 |
|
143 |
if (selector & 0x4) |
144 |
dt = &env->ldt; |
145 |
else
|
146 |
dt = &env->gdt; |
147 |
index = selector & ~7;
|
148 |
if ((index + 7) > dt->limit) |
149 |
return -1; |
150 |
ptr = dt->base + index; |
151 |
*e1_ptr = ldl_kernel(ptr); |
152 |
*e2_ptr = ldl_kernel(ptr + 4);
|
153 |
return 0; |
154 |
} |
155 |
|
156 |
static inline unsigned int get_seg_limit(uint32_t e1, uint32_t e2) |
157 |
{ |
158 |
unsigned int limit; |
159 |
limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
160 |
if (e2 & DESC_G_MASK)
|
161 |
limit = (limit << 12) | 0xfff; |
162 |
return limit;
|
163 |
} |
164 |
|
165 |
static inline uint32_t get_seg_base(uint32_t e1, uint32_t e2) |
166 |
{ |
167 |
return ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
168 |
} |
169 |
|
170 |
static inline void load_seg_cache_raw_dt(SegmentCache *sc, uint32_t e1, uint32_t e2) |
171 |
{ |
172 |
sc->base = get_seg_base(e1, e2); |
173 |
sc->limit = get_seg_limit(e1, e2); |
174 |
sc->flags = e2; |
175 |
} |
176 |
|
177 |
/* init the segment cache in vm86 mode. */
|
178 |
static inline void load_seg_vm(int seg, int selector) |
179 |
{ |
180 |
selector &= 0xffff;
|
181 |
cpu_x86_load_seg_cache(env, seg, selector, |
182 |
(selector << 4), 0xffff, 0); |
183 |
} |
184 |
|
185 |
static inline void get_ss_esp_from_tss(uint32_t *ss_ptr, |
186 |
uint32_t *esp_ptr, int dpl)
|
187 |
{ |
188 |
int type, index, shift;
|
189 |
|
190 |
#if 0
|
191 |
{
|
192 |
int i;
|
193 |
printf("TR: base=%p limit=%x\n", env->tr.base, env->tr.limit);
|
194 |
for(i=0;i<env->tr.limit;i++) {
|
195 |
printf("%02x ", env->tr.base[i]);
|
196 |
if ((i & 7) == 7) printf("\n");
|
197 |
}
|
198 |
printf("\n");
|
199 |
}
|
200 |
#endif
|
201 |
|
202 |
if (!(env->tr.flags & DESC_P_MASK))
|
203 |
cpu_abort(env, "invalid tss");
|
204 |
type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
205 |
if ((type & 7) != 1) |
206 |
cpu_abort(env, "invalid tss type");
|
207 |
shift = type >> 3;
|
208 |
index = (dpl * 4 + 2) << shift; |
209 |
if (index + (4 << shift) - 1 > env->tr.limit) |
210 |
raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
|
211 |
if (shift == 0) { |
212 |
*esp_ptr = lduw_kernel(env->tr.base + index); |
213 |
*ss_ptr = lduw_kernel(env->tr.base + index + 2);
|
214 |
} else {
|
215 |
*esp_ptr = ldl_kernel(env->tr.base + index); |
216 |
*ss_ptr = lduw_kernel(env->tr.base + index + 4);
|
217 |
} |
218 |
} |
219 |
|
220 |
/* XXX: merge with load_seg() */
|
221 |
static void tss_load_seg(int seg_reg, int selector) |
222 |
{ |
223 |
uint32_t e1, e2; |
224 |
int rpl, dpl, cpl;
|
225 |
|
226 |
if ((selector & 0xfffc) != 0) { |
227 |
if (load_segment(&e1, &e2, selector) != 0) |
228 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
229 |
if (!(e2 & DESC_S_MASK))
|
230 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
231 |
rpl = selector & 3;
|
232 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
233 |
cpl = env->hflags & HF_CPL_MASK; |
234 |
if (seg_reg == R_CS) {
|
235 |
if (!(e2 & DESC_CS_MASK))
|
236 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
237 |
/* XXX: is it correct ? */
|
238 |
if (dpl != rpl)
|
239 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
240 |
if ((e2 & DESC_C_MASK) && dpl > rpl)
|
241 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
242 |
} else if (seg_reg == R_SS) { |
243 |
/* SS must be writable data */
|
244 |
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
|
245 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
246 |
if (dpl != cpl || dpl != rpl)
|
247 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
248 |
} else {
|
249 |
/* not readable code */
|
250 |
if ((e2 & DESC_CS_MASK) && !(e2 & DESC_R_MASK))
|
251 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
252 |
/* if data or non conforming code, checks the rights */
|
253 |
if (((e2 >> DESC_TYPE_SHIFT) & 0xf) < 12) { |
254 |
if (dpl < cpl || dpl < rpl)
|
255 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
256 |
} |
257 |
} |
258 |
if (!(e2 & DESC_P_MASK))
|
259 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
260 |
cpu_x86_load_seg_cache(env, seg_reg, selector, |
261 |
get_seg_base(e1, e2), |
262 |
get_seg_limit(e1, e2), |
263 |
e2); |
264 |
} else {
|
265 |
if (seg_reg == R_SS || seg_reg == R_CS)
|
266 |
raise_exception_err(EXCP0A_TSS, selector & 0xfffc);
|
267 |
} |
268 |
} |
269 |
|
270 |
#define SWITCH_TSS_JMP 0 |
271 |
#define SWITCH_TSS_IRET 1 |
272 |
#define SWITCH_TSS_CALL 2 |
273 |
|
274 |
/* XXX: restore CPU state in registers (PowerPC case) */
|
275 |
static void switch_tss(int tss_selector, |
276 |
uint32_t e1, uint32_t e2, int source,
|
277 |
uint32_t next_eip) |
278 |
{ |
279 |
int tss_limit, tss_limit_max, type, old_tss_limit_max, old_type, v1, v2, i;
|
280 |
target_ulong tss_base; |
281 |
uint32_t new_regs[8], new_segs[6]; |
282 |
uint32_t new_eflags, new_eip, new_cr3, new_ldt, new_trap; |
283 |
uint32_t old_eflags, eflags_mask; |
284 |
SegmentCache *dt; |
285 |
int index;
|
286 |
target_ulong ptr; |
287 |
|
288 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
289 |
LOG_PCALL("switch_tss: sel=0x%04x type=%d src=%d\n", tss_selector, type, source);
|
290 |
|
291 |
/* if task gate, we read the TSS segment and we load it */
|
292 |
if (type == 5) { |
293 |
if (!(e2 & DESC_P_MASK))
|
294 |
raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
|
295 |
tss_selector = e1 >> 16;
|
296 |
if (tss_selector & 4) |
297 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
298 |
if (load_segment(&e1, &e2, tss_selector) != 0) |
299 |
raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
|
300 |
if (e2 & DESC_S_MASK)
|
301 |
raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
|
302 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
303 |
if ((type & 7) != 1) |
304 |
raise_exception_err(EXCP0D_GPF, tss_selector & 0xfffc);
|
305 |
} |
306 |
|
307 |
if (!(e2 & DESC_P_MASK))
|
308 |
raise_exception_err(EXCP0B_NOSEG, tss_selector & 0xfffc);
|
309 |
|
310 |
if (type & 8) |
311 |
tss_limit_max = 103;
|
312 |
else
|
313 |
tss_limit_max = 43;
|
314 |
tss_limit = get_seg_limit(e1, e2); |
315 |
tss_base = get_seg_base(e1, e2); |
316 |
if ((tss_selector & 4) != 0 || |
317 |
tss_limit < tss_limit_max) |
318 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
319 |
old_type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
320 |
if (old_type & 8) |
321 |
old_tss_limit_max = 103;
|
322 |
else
|
323 |
old_tss_limit_max = 43;
|
324 |
|
325 |
/* read all the registers from the new TSS */
|
326 |
if (type & 8) { |
327 |
/* 32 bit */
|
328 |
new_cr3 = ldl_kernel(tss_base + 0x1c);
|
329 |
new_eip = ldl_kernel(tss_base + 0x20);
|
330 |
new_eflags = ldl_kernel(tss_base + 0x24);
|
331 |
for(i = 0; i < 8; i++) |
332 |
new_regs[i] = ldl_kernel(tss_base + (0x28 + i * 4)); |
333 |
for(i = 0; i < 6; i++) |
334 |
new_segs[i] = lduw_kernel(tss_base + (0x48 + i * 4)); |
335 |
new_ldt = lduw_kernel(tss_base + 0x60);
|
336 |
new_trap = ldl_kernel(tss_base + 0x64);
|
337 |
} else {
|
338 |
/* 16 bit */
|
339 |
new_cr3 = 0;
|
340 |
new_eip = lduw_kernel(tss_base + 0x0e);
|
341 |
new_eflags = lduw_kernel(tss_base + 0x10);
|
342 |
for(i = 0; i < 8; i++) |
343 |
new_regs[i] = lduw_kernel(tss_base + (0x12 + i * 2)) | 0xffff0000; |
344 |
for(i = 0; i < 4; i++) |
345 |
new_segs[i] = lduw_kernel(tss_base + (0x22 + i * 4)); |
346 |
new_ldt = lduw_kernel(tss_base + 0x2a);
|
347 |
new_segs[R_FS] = 0;
|
348 |
new_segs[R_GS] = 0;
|
349 |
new_trap = 0;
|
350 |
} |
351 |
|
352 |
/* NOTE: we must avoid memory exceptions during the task switch,
|
353 |
so we make dummy accesses before */
|
354 |
/* XXX: it can still fail in some cases, so a bigger hack is
|
355 |
necessary to valid the TLB after having done the accesses */
|
356 |
|
357 |
v1 = ldub_kernel(env->tr.base); |
358 |
v2 = ldub_kernel(env->tr.base + old_tss_limit_max); |
359 |
stb_kernel(env->tr.base, v1); |
360 |
stb_kernel(env->tr.base + old_tss_limit_max, v2); |
361 |
|
362 |
/* clear busy bit (it is restartable) */
|
363 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_IRET) {
|
364 |
target_ulong ptr; |
365 |
uint32_t e2; |
366 |
ptr = env->gdt.base + (env->tr.selector & ~7);
|
367 |
e2 = ldl_kernel(ptr + 4);
|
368 |
e2 &= ~DESC_TSS_BUSY_MASK; |
369 |
stl_kernel(ptr + 4, e2);
|
370 |
} |
371 |
old_eflags = compute_eflags(); |
372 |
if (source == SWITCH_TSS_IRET)
|
373 |
old_eflags &= ~NT_MASK; |
374 |
|
375 |
/* save the current state in the old TSS */
|
376 |
if (type & 8) { |
377 |
/* 32 bit */
|
378 |
stl_kernel(env->tr.base + 0x20, next_eip);
|
379 |
stl_kernel(env->tr.base + 0x24, old_eflags);
|
380 |
stl_kernel(env->tr.base + (0x28 + 0 * 4), EAX); |
381 |
stl_kernel(env->tr.base + (0x28 + 1 * 4), ECX); |
382 |
stl_kernel(env->tr.base + (0x28 + 2 * 4), EDX); |
383 |
stl_kernel(env->tr.base + (0x28 + 3 * 4), EBX); |
384 |
stl_kernel(env->tr.base + (0x28 + 4 * 4), ESP); |
385 |
stl_kernel(env->tr.base + (0x28 + 5 * 4), EBP); |
386 |
stl_kernel(env->tr.base + (0x28 + 6 * 4), ESI); |
387 |
stl_kernel(env->tr.base + (0x28 + 7 * 4), EDI); |
388 |
for(i = 0; i < 6; i++) |
389 |
stw_kernel(env->tr.base + (0x48 + i * 4), env->segs[i].selector); |
390 |
} else {
|
391 |
/* 16 bit */
|
392 |
stw_kernel(env->tr.base + 0x0e, next_eip);
|
393 |
stw_kernel(env->tr.base + 0x10, old_eflags);
|
394 |
stw_kernel(env->tr.base + (0x12 + 0 * 2), EAX); |
395 |
stw_kernel(env->tr.base + (0x12 + 1 * 2), ECX); |
396 |
stw_kernel(env->tr.base + (0x12 + 2 * 2), EDX); |
397 |
stw_kernel(env->tr.base + (0x12 + 3 * 2), EBX); |
398 |
stw_kernel(env->tr.base + (0x12 + 4 * 2), ESP); |
399 |
stw_kernel(env->tr.base + (0x12 + 5 * 2), EBP); |
400 |
stw_kernel(env->tr.base + (0x12 + 6 * 2), ESI); |
401 |
stw_kernel(env->tr.base + (0x12 + 7 * 2), EDI); |
402 |
for(i = 0; i < 4; i++) |
403 |
stw_kernel(env->tr.base + (0x22 + i * 4), env->segs[i].selector); |
404 |
} |
405 |
|
406 |
/* now if an exception occurs, it will occurs in the next task
|
407 |
context */
|
408 |
|
409 |
if (source == SWITCH_TSS_CALL) {
|
410 |
stw_kernel(tss_base, env->tr.selector); |
411 |
new_eflags |= NT_MASK; |
412 |
} |
413 |
|
414 |
/* set busy bit */
|
415 |
if (source == SWITCH_TSS_JMP || source == SWITCH_TSS_CALL) {
|
416 |
target_ulong ptr; |
417 |
uint32_t e2; |
418 |
ptr = env->gdt.base + (tss_selector & ~7);
|
419 |
e2 = ldl_kernel(ptr + 4);
|
420 |
e2 |= DESC_TSS_BUSY_MASK; |
421 |
stl_kernel(ptr + 4, e2);
|
422 |
} |
423 |
|
424 |
/* set the new CPU state */
|
425 |
/* from this point, any exception which occurs can give problems */
|
426 |
env->cr[0] |= CR0_TS_MASK;
|
427 |
env->hflags |= HF_TS_MASK; |
428 |
env->tr.selector = tss_selector; |
429 |
env->tr.base = tss_base; |
430 |
env->tr.limit = tss_limit; |
431 |
env->tr.flags = e2 & ~DESC_TSS_BUSY_MASK; |
432 |
|
433 |
if ((type & 8) && (env->cr[0] & CR0_PG_MASK)) { |
434 |
cpu_x86_update_cr3(env, new_cr3); |
435 |
} |
436 |
|
437 |
/* load all registers without an exception, then reload them with
|
438 |
possible exception */
|
439 |
env->eip = new_eip; |
440 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | |
441 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK; |
442 |
if (!(type & 8)) |
443 |
eflags_mask &= 0xffff;
|
444 |
load_eflags(new_eflags, eflags_mask); |
445 |
/* XXX: what to do in 16 bit case ? */
|
446 |
EAX = new_regs[0];
|
447 |
ECX = new_regs[1];
|
448 |
EDX = new_regs[2];
|
449 |
EBX = new_regs[3];
|
450 |
ESP = new_regs[4];
|
451 |
EBP = new_regs[5];
|
452 |
ESI = new_regs[6];
|
453 |
EDI = new_regs[7];
|
454 |
if (new_eflags & VM_MASK) {
|
455 |
for(i = 0; i < 6; i++) |
456 |
load_seg_vm(i, new_segs[i]); |
457 |
/* in vm86, CPL is always 3 */
|
458 |
cpu_x86_set_cpl(env, 3);
|
459 |
} else {
|
460 |
/* CPL is set the RPL of CS */
|
461 |
cpu_x86_set_cpl(env, new_segs[R_CS] & 3);
|
462 |
/* first just selectors as the rest may trigger exceptions */
|
463 |
for(i = 0; i < 6; i++) |
464 |
cpu_x86_load_seg_cache(env, i, new_segs[i], 0, 0, 0); |
465 |
} |
466 |
|
467 |
env->ldt.selector = new_ldt & ~4;
|
468 |
env->ldt.base = 0;
|
469 |
env->ldt.limit = 0;
|
470 |
env->ldt.flags = 0;
|
471 |
|
472 |
/* load the LDT */
|
473 |
if (new_ldt & 4) |
474 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
475 |
|
476 |
if ((new_ldt & 0xfffc) != 0) { |
477 |
dt = &env->gdt; |
478 |
index = new_ldt & ~7;
|
479 |
if ((index + 7) > dt->limit) |
480 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
481 |
ptr = dt->base + index; |
482 |
e1 = ldl_kernel(ptr); |
483 |
e2 = ldl_kernel(ptr + 4);
|
484 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
485 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
486 |
if (!(e2 & DESC_P_MASK))
|
487 |
raise_exception_err(EXCP0A_TSS, new_ldt & 0xfffc);
|
488 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
489 |
} |
490 |
|
491 |
/* load the segments */
|
492 |
if (!(new_eflags & VM_MASK)) {
|
493 |
tss_load_seg(R_CS, new_segs[R_CS]); |
494 |
tss_load_seg(R_SS, new_segs[R_SS]); |
495 |
tss_load_seg(R_ES, new_segs[R_ES]); |
496 |
tss_load_seg(R_DS, new_segs[R_DS]); |
497 |
tss_load_seg(R_FS, new_segs[R_FS]); |
498 |
tss_load_seg(R_GS, new_segs[R_GS]); |
499 |
} |
500 |
|
501 |
/* check that EIP is in the CS segment limits */
|
502 |
if (new_eip > env->segs[R_CS].limit) {
|
503 |
/* XXX: different exception if CALL ? */
|
504 |
raise_exception_err(EXCP0D_GPF, 0);
|
505 |
} |
506 |
|
507 |
#ifndef CONFIG_USER_ONLY
|
508 |
/* reset local breakpoints */
|
509 |
if (env->dr[7] & 0x55) { |
510 |
for (i = 0; i < 4; i++) { |
511 |
if (hw_breakpoint_enabled(env->dr[7], i) == 0x1) |
512 |
hw_breakpoint_remove(env, i); |
513 |
} |
514 |
env->dr[7] &= ~0x55; |
515 |
} |
516 |
#endif
|
517 |
} |
518 |
|
519 |
/* check if Port I/O is allowed in TSS */
|
520 |
static inline void check_io(int addr, int size) |
521 |
{ |
522 |
int io_offset, val, mask;
|
523 |
|
524 |
/* TSS must be a valid 32 bit one */
|
525 |
if (!(env->tr.flags & DESC_P_MASK) ||
|
526 |
((env->tr.flags >> DESC_TYPE_SHIFT) & 0xf) != 9 || |
527 |
env->tr.limit < 103)
|
528 |
goto fail;
|
529 |
io_offset = lduw_kernel(env->tr.base + 0x66);
|
530 |
io_offset += (addr >> 3);
|
531 |
/* Note: the check needs two bytes */
|
532 |
if ((io_offset + 1) > env->tr.limit) |
533 |
goto fail;
|
534 |
val = lduw_kernel(env->tr.base + io_offset); |
535 |
val >>= (addr & 7);
|
536 |
mask = (1 << size) - 1; |
537 |
/* all bits must be zero to allow the I/O */
|
538 |
if ((val & mask) != 0) { |
539 |
fail:
|
540 |
raise_exception_err(EXCP0D_GPF, 0);
|
541 |
} |
542 |
} |
543 |
|
544 |
void helper_check_iob(uint32_t t0)
|
545 |
{ |
546 |
check_io(t0, 1);
|
547 |
} |
548 |
|
549 |
void helper_check_iow(uint32_t t0)
|
550 |
{ |
551 |
check_io(t0, 2);
|
552 |
} |
553 |
|
554 |
void helper_check_iol(uint32_t t0)
|
555 |
{ |
556 |
check_io(t0, 4);
|
557 |
} |
558 |
|
559 |
void helper_outb(uint32_t port, uint32_t data)
|
560 |
{ |
561 |
cpu_outb(port, data & 0xff);
|
562 |
} |
563 |
|
564 |
target_ulong helper_inb(uint32_t port) |
565 |
{ |
566 |
return cpu_inb(port);
|
567 |
} |
568 |
|
569 |
void helper_outw(uint32_t port, uint32_t data)
|
570 |
{ |
571 |
cpu_outw(port, data & 0xffff);
|
572 |
} |
573 |
|
574 |
target_ulong helper_inw(uint32_t port) |
575 |
{ |
576 |
return cpu_inw(port);
|
577 |
} |
578 |
|
579 |
void helper_outl(uint32_t port, uint32_t data)
|
580 |
{ |
581 |
cpu_outl(port, data); |
582 |
} |
583 |
|
584 |
target_ulong helper_inl(uint32_t port) |
585 |
{ |
586 |
return cpu_inl(port);
|
587 |
} |
588 |
|
589 |
static inline unsigned int get_sp_mask(unsigned int e2) |
590 |
{ |
591 |
if (e2 & DESC_B_MASK)
|
592 |
return 0xffffffff; |
593 |
else
|
594 |
return 0xffff; |
595 |
} |
596 |
|
597 |
static int exeption_has_error_code(int intno) |
598 |
{ |
599 |
switch(intno) {
|
600 |
case 8: |
601 |
case 10: |
602 |
case 11: |
603 |
case 12: |
604 |
case 13: |
605 |
case 14: |
606 |
case 17: |
607 |
return 1; |
608 |
} |
609 |
return 0; |
610 |
} |
611 |
|
612 |
#ifdef TARGET_X86_64
|
613 |
#define SET_ESP(val, sp_mask)\
|
614 |
do {\
|
615 |
if ((sp_mask) == 0xffff)\ |
616 |
ESP = (ESP & ~0xffff) | ((val) & 0xffff);\ |
617 |
else if ((sp_mask) == 0xffffffffLL)\ |
618 |
ESP = (uint32_t)(val);\ |
619 |
else\
|
620 |
ESP = (val);\ |
621 |
} while (0) |
622 |
#else
|
623 |
#define SET_ESP(val, sp_mask) ESP = (ESP & ~(sp_mask)) | ((val) & (sp_mask))
|
624 |
#endif
|
625 |
|
626 |
/* in 64-bit machines, this can overflow. So this segment addition macro
|
627 |
* can be used to trim the value to 32-bit whenever needed */
|
628 |
#define SEG_ADDL(ssp, sp, sp_mask) ((uint32_t)((ssp) + (sp & (sp_mask))))
|
629 |
|
630 |
/* XXX: add a is_user flag to have proper security support */
|
631 |
#define PUSHW(ssp, sp, sp_mask, val)\
|
632 |
{\ |
633 |
sp -= 2;\
|
634 |
stw_kernel((ssp) + (sp & (sp_mask)), (val));\ |
635 |
} |
636 |
|
637 |
#define PUSHL(ssp, sp, sp_mask, val)\
|
638 |
{\ |
639 |
sp -= 4;\
|
640 |
stl_kernel(SEG_ADDL(ssp, sp, sp_mask), (uint32_t)(val));\ |
641 |
} |
642 |
|
643 |
#define POPW(ssp, sp, sp_mask, val)\
|
644 |
{\ |
645 |
val = lduw_kernel((ssp) + (sp & (sp_mask)));\ |
646 |
sp += 2;\
|
647 |
} |
648 |
|
649 |
#define POPL(ssp, sp, sp_mask, val)\
|
650 |
{\ |
651 |
val = (uint32_t)ldl_kernel(SEG_ADDL(ssp, sp, sp_mask));\ |
652 |
sp += 4;\
|
653 |
} |
654 |
|
655 |
/* protected mode interrupt */
|
656 |
static void do_interrupt_protected(int intno, int is_int, int error_code, |
657 |
unsigned int next_eip, int is_hw) |
658 |
{ |
659 |
SegmentCache *dt; |
660 |
target_ulong ptr, ssp; |
661 |
int type, dpl, selector, ss_dpl, cpl;
|
662 |
int has_error_code, new_stack, shift;
|
663 |
uint32_t e1, e2, offset, ss = 0, esp, ss_e1 = 0, ss_e2 = 0; |
664 |
uint32_t old_eip, sp_mask; |
665 |
|
666 |
has_error_code = 0;
|
667 |
if (!is_int && !is_hw)
|
668 |
has_error_code = exeption_has_error_code(intno); |
669 |
if (is_int)
|
670 |
old_eip = next_eip; |
671 |
else
|
672 |
old_eip = env->eip; |
673 |
|
674 |
dt = &env->idt; |
675 |
if (intno * 8 + 7 > dt->limit) |
676 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
677 |
ptr = dt->base + intno * 8;
|
678 |
e1 = ldl_kernel(ptr); |
679 |
e2 = ldl_kernel(ptr + 4);
|
680 |
/* check gate type */
|
681 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
682 |
switch(type) {
|
683 |
case 5: /* task gate */ |
684 |
/* must do that check here to return the correct error code */
|
685 |
if (!(e2 & DESC_P_MASK))
|
686 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
687 |
switch_tss(intno * 8, e1, e2, SWITCH_TSS_CALL, old_eip);
|
688 |
if (has_error_code) {
|
689 |
int type;
|
690 |
uint32_t mask; |
691 |
/* push the error code */
|
692 |
type = (env->tr.flags >> DESC_TYPE_SHIFT) & 0xf;
|
693 |
shift = type >> 3;
|
694 |
if (env->segs[R_SS].flags & DESC_B_MASK)
|
695 |
mask = 0xffffffff;
|
696 |
else
|
697 |
mask = 0xffff;
|
698 |
esp = (ESP - (2 << shift)) & mask;
|
699 |
ssp = env->segs[R_SS].base + esp; |
700 |
if (shift)
|
701 |
stl_kernel(ssp, error_code); |
702 |
else
|
703 |
stw_kernel(ssp, error_code); |
704 |
SET_ESP(esp, mask); |
705 |
} |
706 |
return;
|
707 |
case 6: /* 286 interrupt gate */ |
708 |
case 7: /* 286 trap gate */ |
709 |
case 14: /* 386 interrupt gate */ |
710 |
case 15: /* 386 trap gate */ |
711 |
break;
|
712 |
default:
|
713 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
714 |
break;
|
715 |
} |
716 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
717 |
cpl = env->hflags & HF_CPL_MASK; |
718 |
/* check privilege if software int */
|
719 |
if (is_int && dpl < cpl)
|
720 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
721 |
/* check valid bit */
|
722 |
if (!(e2 & DESC_P_MASK))
|
723 |
raise_exception_err(EXCP0B_NOSEG, intno * 8 + 2); |
724 |
selector = e1 >> 16;
|
725 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
726 |
if ((selector & 0xfffc) == 0) |
727 |
raise_exception_err(EXCP0D_GPF, 0);
|
728 |
|
729 |
if (load_segment(&e1, &e2, selector) != 0) |
730 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
731 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
732 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
733 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
734 |
if (dpl > cpl)
|
735 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
736 |
if (!(e2 & DESC_P_MASK))
|
737 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
738 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
739 |
/* to inner privilege */
|
740 |
get_ss_esp_from_tss(&ss, &esp, dpl); |
741 |
if ((ss & 0xfffc) == 0) |
742 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
743 |
if ((ss & 3) != dpl) |
744 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
745 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
746 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
747 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
748 |
if (ss_dpl != dpl)
|
749 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
750 |
if (!(ss_e2 & DESC_S_MASK) ||
|
751 |
(ss_e2 & DESC_CS_MASK) || |
752 |
!(ss_e2 & DESC_W_MASK)) |
753 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
754 |
if (!(ss_e2 & DESC_P_MASK))
|
755 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
756 |
new_stack = 1;
|
757 |
sp_mask = get_sp_mask(ss_e2); |
758 |
ssp = get_seg_base(ss_e1, ss_e2); |
759 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
760 |
/* to same privilege */
|
761 |
if (env->eflags & VM_MASK)
|
762 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
763 |
new_stack = 0;
|
764 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
765 |
ssp = env->segs[R_SS].base; |
766 |
esp = ESP; |
767 |
dpl = cpl; |
768 |
} else {
|
769 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
770 |
new_stack = 0; /* avoid warning */ |
771 |
sp_mask = 0; /* avoid warning */ |
772 |
ssp = 0; /* avoid warning */ |
773 |
esp = 0; /* avoid warning */ |
774 |
} |
775 |
|
776 |
shift = type >> 3;
|
777 |
|
778 |
#if 0
|
779 |
/* XXX: check that enough room is available */
|
780 |
push_size = 6 + (new_stack << 2) + (has_error_code << 1);
|
781 |
if (env->eflags & VM_MASK)
|
782 |
push_size += 8;
|
783 |
push_size <<= shift;
|
784 |
#endif
|
785 |
if (shift == 1) { |
786 |
if (new_stack) {
|
787 |
if (env->eflags & VM_MASK) {
|
788 |
PUSHL(ssp, esp, sp_mask, env->segs[R_GS].selector); |
789 |
PUSHL(ssp, esp, sp_mask, env->segs[R_FS].selector); |
790 |
PUSHL(ssp, esp, sp_mask, env->segs[R_DS].selector); |
791 |
PUSHL(ssp, esp, sp_mask, env->segs[R_ES].selector); |
792 |
} |
793 |
PUSHL(ssp, esp, sp_mask, env->segs[R_SS].selector); |
794 |
PUSHL(ssp, esp, sp_mask, ESP); |
795 |
} |
796 |
PUSHL(ssp, esp, sp_mask, compute_eflags()); |
797 |
PUSHL(ssp, esp, sp_mask, env->segs[R_CS].selector); |
798 |
PUSHL(ssp, esp, sp_mask, old_eip); |
799 |
if (has_error_code) {
|
800 |
PUSHL(ssp, esp, sp_mask, error_code); |
801 |
} |
802 |
} else {
|
803 |
if (new_stack) {
|
804 |
if (env->eflags & VM_MASK) {
|
805 |
PUSHW(ssp, esp, sp_mask, env->segs[R_GS].selector); |
806 |
PUSHW(ssp, esp, sp_mask, env->segs[R_FS].selector); |
807 |
PUSHW(ssp, esp, sp_mask, env->segs[R_DS].selector); |
808 |
PUSHW(ssp, esp, sp_mask, env->segs[R_ES].selector); |
809 |
} |
810 |
PUSHW(ssp, esp, sp_mask, env->segs[R_SS].selector); |
811 |
PUSHW(ssp, esp, sp_mask, ESP); |
812 |
} |
813 |
PUSHW(ssp, esp, sp_mask, compute_eflags()); |
814 |
PUSHW(ssp, esp, sp_mask, env->segs[R_CS].selector); |
815 |
PUSHW(ssp, esp, sp_mask, old_eip); |
816 |
if (has_error_code) {
|
817 |
PUSHW(ssp, esp, sp_mask, error_code); |
818 |
} |
819 |
} |
820 |
|
821 |
if (new_stack) {
|
822 |
if (env->eflags & VM_MASK) {
|
823 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0, 0); |
824 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0, 0); |
825 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0, 0); |
826 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0, 0); |
827 |
} |
828 |
ss = (ss & ~3) | dpl;
|
829 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
830 |
ssp, get_seg_limit(ss_e1, ss_e2), ss_e2); |
831 |
} |
832 |
SET_ESP(esp, sp_mask); |
833 |
|
834 |
selector = (selector & ~3) | dpl;
|
835 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
836 |
get_seg_base(e1, e2), |
837 |
get_seg_limit(e1, e2), |
838 |
e2); |
839 |
cpu_x86_set_cpl(env, dpl); |
840 |
env->eip = offset; |
841 |
|
842 |
/* interrupt gate clear IF mask */
|
843 |
if ((type & 1) == 0) { |
844 |
env->eflags &= ~IF_MASK; |
845 |
} |
846 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
847 |
} |
848 |
|
849 |
#ifdef TARGET_X86_64
|
850 |
|
851 |
#define PUSHQ(sp, val)\
|
852 |
{\ |
853 |
sp -= 8;\
|
854 |
stq_kernel(sp, (val));\ |
855 |
} |
856 |
|
857 |
#define POPQ(sp, val)\
|
858 |
{\ |
859 |
val = ldq_kernel(sp);\ |
860 |
sp += 8;\
|
861 |
} |
862 |
|
863 |
static inline target_ulong get_rsp_from_tss(int level) |
864 |
{ |
865 |
int index;
|
866 |
|
867 |
#if 0
|
868 |
printf("TR: base=" TARGET_FMT_lx " limit=%x\n",
|
869 |
env->tr.base, env->tr.limit);
|
870 |
#endif
|
871 |
|
872 |
if (!(env->tr.flags & DESC_P_MASK))
|
873 |
cpu_abort(env, "invalid tss");
|
874 |
index = 8 * level + 4; |
875 |
if ((index + 7) > env->tr.limit) |
876 |
raise_exception_err(EXCP0A_TSS, env->tr.selector & 0xfffc);
|
877 |
return ldq_kernel(env->tr.base + index);
|
878 |
} |
879 |
|
880 |
/* 64 bit interrupt */
|
881 |
static void do_interrupt64(int intno, int is_int, int error_code, |
882 |
target_ulong next_eip, int is_hw)
|
883 |
{ |
884 |
SegmentCache *dt; |
885 |
target_ulong ptr; |
886 |
int type, dpl, selector, cpl, ist;
|
887 |
int has_error_code, new_stack;
|
888 |
uint32_t e1, e2, e3, ss; |
889 |
target_ulong old_eip, esp, offset; |
890 |
|
891 |
has_error_code = 0;
|
892 |
if (!is_int && !is_hw)
|
893 |
has_error_code = exeption_has_error_code(intno); |
894 |
if (is_int)
|
895 |
old_eip = next_eip; |
896 |
else
|
897 |
old_eip = env->eip; |
898 |
|
899 |
dt = &env->idt; |
900 |
if (intno * 16 + 15 > dt->limit) |
901 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
902 |
ptr = dt->base + intno * 16;
|
903 |
e1 = ldl_kernel(ptr); |
904 |
e2 = ldl_kernel(ptr + 4);
|
905 |
e3 = ldl_kernel(ptr + 8);
|
906 |
/* check gate type */
|
907 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
908 |
switch(type) {
|
909 |
case 14: /* 386 interrupt gate */ |
910 |
case 15: /* 386 trap gate */ |
911 |
break;
|
912 |
default:
|
913 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
914 |
break;
|
915 |
} |
916 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
917 |
cpl = env->hflags & HF_CPL_MASK; |
918 |
/* check privilege if software int */
|
919 |
if (is_int && dpl < cpl)
|
920 |
raise_exception_err(EXCP0D_GPF, intno * 16 + 2); |
921 |
/* check valid bit */
|
922 |
if (!(e2 & DESC_P_MASK))
|
923 |
raise_exception_err(EXCP0B_NOSEG, intno * 16 + 2); |
924 |
selector = e1 >> 16;
|
925 |
offset = ((target_ulong)e3 << 32) | (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
926 |
ist = e2 & 7;
|
927 |
if ((selector & 0xfffc) == 0) |
928 |
raise_exception_err(EXCP0D_GPF, 0);
|
929 |
|
930 |
if (load_segment(&e1, &e2, selector) != 0) |
931 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
932 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
933 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
934 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
935 |
if (dpl > cpl)
|
936 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
937 |
if (!(e2 & DESC_P_MASK))
|
938 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
939 |
if (!(e2 & DESC_L_MASK) || (e2 & DESC_B_MASK))
|
940 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
941 |
if ((!(e2 & DESC_C_MASK) && dpl < cpl) || ist != 0) { |
942 |
/* to inner privilege */
|
943 |
if (ist != 0) |
944 |
esp = get_rsp_from_tss(ist + 3);
|
945 |
else
|
946 |
esp = get_rsp_from_tss(dpl); |
947 |
esp &= ~0xfLL; /* align stack */ |
948 |
ss = 0;
|
949 |
new_stack = 1;
|
950 |
} else if ((e2 & DESC_C_MASK) || dpl == cpl) { |
951 |
/* to same privilege */
|
952 |
if (env->eflags & VM_MASK)
|
953 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
954 |
new_stack = 0;
|
955 |
if (ist != 0) |
956 |
esp = get_rsp_from_tss(ist + 3);
|
957 |
else
|
958 |
esp = ESP; |
959 |
esp &= ~0xfLL; /* align stack */ |
960 |
dpl = cpl; |
961 |
} else {
|
962 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
963 |
new_stack = 0; /* avoid warning */ |
964 |
esp = 0; /* avoid warning */ |
965 |
} |
966 |
|
967 |
PUSHQ(esp, env->segs[R_SS].selector); |
968 |
PUSHQ(esp, ESP); |
969 |
PUSHQ(esp, compute_eflags()); |
970 |
PUSHQ(esp, env->segs[R_CS].selector); |
971 |
PUSHQ(esp, old_eip); |
972 |
if (has_error_code) {
|
973 |
PUSHQ(esp, error_code); |
974 |
} |
975 |
|
976 |
if (new_stack) {
|
977 |
ss = 0 | dpl;
|
978 |
cpu_x86_load_seg_cache(env, R_SS, ss, 0, 0, 0); |
979 |
} |
980 |
ESP = esp; |
981 |
|
982 |
selector = (selector & ~3) | dpl;
|
983 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
984 |
get_seg_base(e1, e2), |
985 |
get_seg_limit(e1, e2), |
986 |
e2); |
987 |
cpu_x86_set_cpl(env, dpl); |
988 |
env->eip = offset; |
989 |
|
990 |
/* interrupt gate clear IF mask */
|
991 |
if ((type & 1) == 0) { |
992 |
env->eflags &= ~IF_MASK; |
993 |
} |
994 |
env->eflags &= ~(TF_MASK | VM_MASK | RF_MASK | NT_MASK); |
995 |
} |
996 |
#endif
|
997 |
|
998 |
#ifdef TARGET_X86_64
|
999 |
#if defined(CONFIG_USER_ONLY)
|
1000 |
void helper_syscall(int next_eip_addend) |
1001 |
{ |
1002 |
env->exception_index = EXCP_SYSCALL; |
1003 |
env->exception_next_eip = env->eip + next_eip_addend; |
1004 |
cpu_loop_exit(); |
1005 |
} |
1006 |
#else
|
1007 |
void helper_syscall(int next_eip_addend) |
1008 |
{ |
1009 |
int selector;
|
1010 |
|
1011 |
if (!(env->efer & MSR_EFER_SCE)) {
|
1012 |
raise_exception_err(EXCP06_ILLOP, 0);
|
1013 |
} |
1014 |
selector = (env->star >> 32) & 0xffff; |
1015 |
if (env->hflags & HF_LMA_MASK) {
|
1016 |
int code64;
|
1017 |
|
1018 |
ECX = env->eip + next_eip_addend; |
1019 |
env->regs[11] = compute_eflags();
|
1020 |
|
1021 |
code64 = env->hflags & HF_CS64_MASK; |
1022 |
|
1023 |
cpu_x86_set_cpl(env, 0);
|
1024 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
1025 |
0, 0xffffffff, |
1026 |
DESC_G_MASK | DESC_P_MASK | |
1027 |
DESC_S_MASK | |
1028 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
1029 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
1030 |
0, 0xffffffff, |
1031 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1032 |
DESC_S_MASK | |
1033 |
DESC_W_MASK | DESC_A_MASK); |
1034 |
env->eflags &= ~env->fmask; |
1035 |
load_eflags(env->eflags, 0);
|
1036 |
if (code64)
|
1037 |
env->eip = env->lstar; |
1038 |
else
|
1039 |
env->eip = env->cstar; |
1040 |
} else {
|
1041 |
ECX = (uint32_t)(env->eip + next_eip_addend); |
1042 |
|
1043 |
cpu_x86_set_cpl(env, 0);
|
1044 |
cpu_x86_load_seg_cache(env, R_CS, selector & 0xfffc,
|
1045 |
0, 0xffffffff, |
1046 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1047 |
DESC_S_MASK | |
1048 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1049 |
cpu_x86_load_seg_cache(env, R_SS, (selector + 8) & 0xfffc, |
1050 |
0, 0xffffffff, |
1051 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1052 |
DESC_S_MASK | |
1053 |
DESC_W_MASK | DESC_A_MASK); |
1054 |
env->eflags &= ~(IF_MASK | RF_MASK | VM_MASK); |
1055 |
env->eip = (uint32_t)env->star; |
1056 |
} |
1057 |
} |
1058 |
#endif
|
1059 |
#endif
|
1060 |
|
1061 |
#ifdef TARGET_X86_64
|
1062 |
void helper_sysret(int dflag) |
1063 |
{ |
1064 |
int cpl, selector;
|
1065 |
|
1066 |
if (!(env->efer & MSR_EFER_SCE)) {
|
1067 |
raise_exception_err(EXCP06_ILLOP, 0);
|
1068 |
} |
1069 |
cpl = env->hflags & HF_CPL_MASK; |
1070 |
if (!(env->cr[0] & CR0_PE_MASK) || cpl != 0) { |
1071 |
raise_exception_err(EXCP0D_GPF, 0);
|
1072 |
} |
1073 |
selector = (env->star >> 48) & 0xffff; |
1074 |
if (env->hflags & HF_LMA_MASK) {
|
1075 |
if (dflag == 2) { |
1076 |
cpu_x86_load_seg_cache(env, R_CS, (selector + 16) | 3, |
1077 |
0, 0xffffffff, |
1078 |
DESC_G_MASK | DESC_P_MASK | |
1079 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1080 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | |
1081 |
DESC_L_MASK); |
1082 |
env->eip = ECX; |
1083 |
} else {
|
1084 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
1085 |
0, 0xffffffff, |
1086 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1087 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1088 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1089 |
env->eip = (uint32_t)ECX; |
1090 |
} |
1091 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
1092 |
0, 0xffffffff, |
1093 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1094 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1095 |
DESC_W_MASK | DESC_A_MASK); |
1096 |
load_eflags((uint32_t)(env->regs[11]), TF_MASK | AC_MASK | ID_MASK |
|
1097 |
IF_MASK | IOPL_MASK | VM_MASK | RF_MASK | NT_MASK); |
1098 |
cpu_x86_set_cpl(env, 3);
|
1099 |
} else {
|
1100 |
cpu_x86_load_seg_cache(env, R_CS, selector | 3,
|
1101 |
0, 0xffffffff, |
1102 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1103 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1104 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
1105 |
env->eip = (uint32_t)ECX; |
1106 |
cpu_x86_load_seg_cache(env, R_SS, selector + 8,
|
1107 |
0, 0xffffffff, |
1108 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
1109 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
1110 |
DESC_W_MASK | DESC_A_MASK); |
1111 |
env->eflags |= IF_MASK; |
1112 |
cpu_x86_set_cpl(env, 3);
|
1113 |
} |
1114 |
} |
1115 |
#endif
|
1116 |
|
1117 |
/* real mode interrupt */
|
1118 |
static void do_interrupt_real(int intno, int is_int, int error_code, |
1119 |
unsigned int next_eip) |
1120 |
{ |
1121 |
SegmentCache *dt; |
1122 |
target_ulong ptr, ssp; |
1123 |
int selector;
|
1124 |
uint32_t offset, esp; |
1125 |
uint32_t old_cs, old_eip; |
1126 |
|
1127 |
/* real mode (simpler !) */
|
1128 |
dt = &env->idt; |
1129 |
if (intno * 4 + 3 > dt->limit) |
1130 |
raise_exception_err(EXCP0D_GPF, intno * 8 + 2); |
1131 |
ptr = dt->base + intno * 4;
|
1132 |
offset = lduw_kernel(ptr); |
1133 |
selector = lduw_kernel(ptr + 2);
|
1134 |
esp = ESP; |
1135 |
ssp = env->segs[R_SS].base; |
1136 |
if (is_int)
|
1137 |
old_eip = next_eip; |
1138 |
else
|
1139 |
old_eip = env->eip; |
1140 |
old_cs = env->segs[R_CS].selector; |
1141 |
/* XXX: use SS segment size ? */
|
1142 |
PUSHW(ssp, esp, 0xffff, compute_eflags());
|
1143 |
PUSHW(ssp, esp, 0xffff, old_cs);
|
1144 |
PUSHW(ssp, esp, 0xffff, old_eip);
|
1145 |
|
1146 |
/* update processor state */
|
1147 |
ESP = (ESP & ~0xffff) | (esp & 0xffff); |
1148 |
env->eip = offset; |
1149 |
env->segs[R_CS].selector = selector; |
1150 |
env->segs[R_CS].base = (selector << 4);
|
1151 |
env->eflags &= ~(IF_MASK | TF_MASK | AC_MASK | RF_MASK); |
1152 |
} |
1153 |
|
1154 |
/* fake user mode interrupt */
|
1155 |
void do_interrupt_user(int intno, int is_int, int error_code, |
1156 |
target_ulong next_eip) |
1157 |
{ |
1158 |
SegmentCache *dt; |
1159 |
target_ulong ptr; |
1160 |
int dpl, cpl, shift;
|
1161 |
uint32_t e2; |
1162 |
|
1163 |
dt = &env->idt; |
1164 |
if (env->hflags & HF_LMA_MASK) {
|
1165 |
shift = 4;
|
1166 |
} else {
|
1167 |
shift = 3;
|
1168 |
} |
1169 |
ptr = dt->base + (intno << shift); |
1170 |
e2 = ldl_kernel(ptr + 4);
|
1171 |
|
1172 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
1173 |
cpl = env->hflags & HF_CPL_MASK; |
1174 |
/* check privilege if software int */
|
1175 |
if (is_int && dpl < cpl)
|
1176 |
raise_exception_err(EXCP0D_GPF, (intno << shift) + 2);
|
1177 |
|
1178 |
/* Since we emulate only user space, we cannot do more than
|
1179 |
exiting the emulation with the suitable exception and error
|
1180 |
code */
|
1181 |
if (is_int)
|
1182 |
EIP = next_eip; |
1183 |
} |
1184 |
|
1185 |
#if !defined(CONFIG_USER_ONLY)
|
1186 |
static void handle_even_inj(int intno, int is_int, int error_code, |
1187 |
int is_hw, int rm) |
1188 |
{ |
1189 |
uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
1190 |
if (!(event_inj & SVM_EVTINJ_VALID)) {
|
1191 |
int type;
|
1192 |
if (is_int)
|
1193 |
type = SVM_EVTINJ_TYPE_SOFT; |
1194 |
else
|
1195 |
type = SVM_EVTINJ_TYPE_EXEPT; |
1196 |
event_inj = intno | type | SVM_EVTINJ_VALID; |
1197 |
if (!rm && exeption_has_error_code(intno)) {
|
1198 |
event_inj |= SVM_EVTINJ_VALID_ERR; |
1199 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err), error_code);
|
1200 |
} |
1201 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj);
|
1202 |
} |
1203 |
} |
1204 |
#endif
|
1205 |
|
1206 |
/*
|
1207 |
* Begin execution of an interruption. is_int is TRUE if coming from
|
1208 |
* the int instruction. next_eip is the EIP value AFTER the interrupt
|
1209 |
* instruction. It is only relevant if is_int is TRUE.
|
1210 |
*/
|
1211 |
void do_interrupt(int intno, int is_int, int error_code, |
1212 |
target_ulong next_eip, int is_hw)
|
1213 |
{ |
1214 |
if (qemu_loglevel_mask(CPU_LOG_INT)) {
|
1215 |
if ((env->cr[0] & CR0_PE_MASK)) { |
1216 |
static int count; |
1217 |
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, |
1218 |
count, intno, error_code, is_int, |
1219 |
env->hflags & HF_CPL_MASK, |
1220 |
env->segs[R_CS].selector, EIP, |
1221 |
(int)env->segs[R_CS].base + EIP,
|
1222 |
env->segs[R_SS].selector, ESP); |
1223 |
if (intno == 0x0e) { |
1224 |
qemu_log(" CR2=" TARGET_FMT_lx, env->cr[2]); |
1225 |
} else {
|
1226 |
qemu_log(" EAX=" TARGET_FMT_lx, EAX);
|
1227 |
} |
1228 |
qemu_log("\n");
|
1229 |
log_cpu_state(env, X86_DUMP_CCOP); |
1230 |
#if 0
|
1231 |
{
|
1232 |
int i;
|
1233 |
uint8_t *ptr;
|
1234 |
qemu_log(" code=");
|
1235 |
ptr = env->segs[R_CS].base + env->eip;
|
1236 |
for(i = 0; i < 16; i++) {
|
1237 |
qemu_log(" %02x", ldub(ptr + i));
|
1238 |
}
|
1239 |
qemu_log("\n");
|
1240 |
}
|
1241 |
#endif
|
1242 |
count++; |
1243 |
} |
1244 |
} |
1245 |
if (env->cr[0] & CR0_PE_MASK) { |
1246 |
#if !defined(CONFIG_USER_ONLY)
|
1247 |
if (env->hflags & HF_SVMI_MASK)
|
1248 |
handle_even_inj(intno, is_int, error_code, is_hw, 0);
|
1249 |
#endif
|
1250 |
#ifdef TARGET_X86_64
|
1251 |
if (env->hflags & HF_LMA_MASK) {
|
1252 |
do_interrupt64(intno, is_int, error_code, next_eip, is_hw); |
1253 |
} else
|
1254 |
#endif
|
1255 |
{ |
1256 |
do_interrupt_protected(intno, is_int, error_code, next_eip, is_hw); |
1257 |
} |
1258 |
} else {
|
1259 |
#if !defined(CONFIG_USER_ONLY)
|
1260 |
if (env->hflags & HF_SVMI_MASK)
|
1261 |
handle_even_inj(intno, is_int, error_code, is_hw, 1);
|
1262 |
#endif
|
1263 |
do_interrupt_real(intno, is_int, error_code, next_eip); |
1264 |
} |
1265 |
|
1266 |
#if !defined(CONFIG_USER_ONLY)
|
1267 |
if (env->hflags & HF_SVMI_MASK) {
|
1268 |
uint32_t event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
1269 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj), event_inj & ~SVM_EVTINJ_VALID);
|
1270 |
} |
1271 |
#endif
|
1272 |
} |
1273 |
|
1274 |
/* This should come from sysemu.h - if we could include it here... */
|
1275 |
void qemu_system_reset_request(void); |
1276 |
|
1277 |
/*
|
1278 |
* Check nested exceptions and change to double or triple fault if
|
1279 |
* needed. It should only be called, if this is not an interrupt.
|
1280 |
* Returns the new exception number.
|
1281 |
*/
|
1282 |
static int check_exception(int intno, int *error_code) |
1283 |
{ |
1284 |
int first_contributory = env->old_exception == 0 || |
1285 |
(env->old_exception >= 10 &&
|
1286 |
env->old_exception <= 13);
|
1287 |
int second_contributory = intno == 0 || |
1288 |
(intno >= 10 && intno <= 13); |
1289 |
|
1290 |
qemu_log_mask(CPU_LOG_INT, "check_exception old: 0x%x new 0x%x\n",
|
1291 |
env->old_exception, intno); |
1292 |
|
1293 |
#if !defined(CONFIG_USER_ONLY)
|
1294 |
if (env->old_exception == EXCP08_DBLE) {
|
1295 |
if (env->hflags & HF_SVMI_MASK)
|
1296 |
helper_vmexit(SVM_EXIT_SHUTDOWN, 0); /* does not return */ |
1297 |
|
1298 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
1299 |
|
1300 |
qemu_system_reset_request(); |
1301 |
return EXCP_HLT;
|
1302 |
} |
1303 |
#endif
|
1304 |
|
1305 |
if ((first_contributory && second_contributory)
|
1306 |
|| (env->old_exception == EXCP0E_PAGE && |
1307 |
(second_contributory || (intno == EXCP0E_PAGE)))) { |
1308 |
intno = EXCP08_DBLE; |
1309 |
*error_code = 0;
|
1310 |
} |
1311 |
|
1312 |
if (second_contributory || (intno == EXCP0E_PAGE) ||
|
1313 |
(intno == EXCP08_DBLE)) |
1314 |
env->old_exception = intno; |
1315 |
|
1316 |
return intno;
|
1317 |
} |
1318 |
|
1319 |
/*
|
1320 |
* Signal an interruption. It is executed in the main CPU loop.
|
1321 |
* is_int is TRUE if coming from the int instruction. next_eip is the
|
1322 |
* EIP value AFTER the interrupt instruction. It is only relevant if
|
1323 |
* is_int is TRUE.
|
1324 |
*/
|
1325 |
static void QEMU_NORETURN raise_interrupt(int intno, int is_int, int error_code, |
1326 |
int next_eip_addend)
|
1327 |
{ |
1328 |
if (!is_int) {
|
1329 |
helper_svm_check_intercept_param(SVM_EXIT_EXCP_BASE + intno, error_code); |
1330 |
intno = check_exception(intno, &error_code); |
1331 |
} else {
|
1332 |
helper_svm_check_intercept_param(SVM_EXIT_SWINT, 0);
|
1333 |
} |
1334 |
|
1335 |
env->exception_index = intno; |
1336 |
env->error_code = error_code; |
1337 |
env->exception_is_int = is_int; |
1338 |
env->exception_next_eip = env->eip + next_eip_addend; |
1339 |
cpu_loop_exit(); |
1340 |
} |
1341 |
|
1342 |
/* shortcuts to generate exceptions */
|
1343 |
|
1344 |
void raise_exception_err(int exception_index, int error_code) |
1345 |
{ |
1346 |
raise_interrupt(exception_index, 0, error_code, 0); |
1347 |
} |
1348 |
|
1349 |
void raise_exception(int exception_index) |
1350 |
{ |
1351 |
raise_interrupt(exception_index, 0, 0, 0); |
1352 |
} |
1353 |
|
1354 |
/* SMM support */
|
1355 |
|
1356 |
#if defined(CONFIG_USER_ONLY)
|
1357 |
|
1358 |
void do_smm_enter(void) |
1359 |
{ |
1360 |
} |
1361 |
|
1362 |
void helper_rsm(void) |
1363 |
{ |
1364 |
} |
1365 |
|
1366 |
#else
|
1367 |
|
1368 |
#ifdef TARGET_X86_64
|
1369 |
#define SMM_REVISION_ID 0x00020064 |
1370 |
#else
|
1371 |
#define SMM_REVISION_ID 0x00020000 |
1372 |
#endif
|
1373 |
|
1374 |
void do_smm_enter(void) |
1375 |
{ |
1376 |
target_ulong sm_state; |
1377 |
SegmentCache *dt; |
1378 |
int i, offset;
|
1379 |
|
1380 |
qemu_log_mask(CPU_LOG_INT, "SMM: enter\n");
|
1381 |
log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP); |
1382 |
|
1383 |
env->hflags |= HF_SMM_MASK; |
1384 |
cpu_smm_update(env); |
1385 |
|
1386 |
sm_state = env->smbase + 0x8000;
|
1387 |
|
1388 |
#ifdef TARGET_X86_64
|
1389 |
for(i = 0; i < 6; i++) { |
1390 |
dt = &env->segs[i]; |
1391 |
offset = 0x7e00 + i * 16; |
1392 |
stw_phys(sm_state + offset, dt->selector); |
1393 |
stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff); |
1394 |
stl_phys(sm_state + offset + 4, dt->limit);
|
1395 |
stq_phys(sm_state + offset + 8, dt->base);
|
1396 |
} |
1397 |
|
1398 |
stq_phys(sm_state + 0x7e68, env->gdt.base);
|
1399 |
stl_phys(sm_state + 0x7e64, env->gdt.limit);
|
1400 |
|
1401 |
stw_phys(sm_state + 0x7e70, env->ldt.selector);
|
1402 |
stq_phys(sm_state + 0x7e78, env->ldt.base);
|
1403 |
stl_phys(sm_state + 0x7e74, env->ldt.limit);
|
1404 |
stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff); |
1405 |
|
1406 |
stq_phys(sm_state + 0x7e88, env->idt.base);
|
1407 |
stl_phys(sm_state + 0x7e84, env->idt.limit);
|
1408 |
|
1409 |
stw_phys(sm_state + 0x7e90, env->tr.selector);
|
1410 |
stq_phys(sm_state + 0x7e98, env->tr.base);
|
1411 |
stl_phys(sm_state + 0x7e94, env->tr.limit);
|
1412 |
stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff); |
1413 |
|
1414 |
stq_phys(sm_state + 0x7ed0, env->efer);
|
1415 |
|
1416 |
stq_phys(sm_state + 0x7ff8, EAX);
|
1417 |
stq_phys(sm_state + 0x7ff0, ECX);
|
1418 |
stq_phys(sm_state + 0x7fe8, EDX);
|
1419 |
stq_phys(sm_state + 0x7fe0, EBX);
|
1420 |
stq_phys(sm_state + 0x7fd8, ESP);
|
1421 |
stq_phys(sm_state + 0x7fd0, EBP);
|
1422 |
stq_phys(sm_state + 0x7fc8, ESI);
|
1423 |
stq_phys(sm_state + 0x7fc0, EDI);
|
1424 |
for(i = 8; i < 16; i++) |
1425 |
stq_phys(sm_state + 0x7ff8 - i * 8, env->regs[i]); |
1426 |
stq_phys(sm_state + 0x7f78, env->eip);
|
1427 |
stl_phys(sm_state + 0x7f70, compute_eflags());
|
1428 |
stl_phys(sm_state + 0x7f68, env->dr[6]); |
1429 |
stl_phys(sm_state + 0x7f60, env->dr[7]); |
1430 |
|
1431 |
stl_phys(sm_state + 0x7f48, env->cr[4]); |
1432 |
stl_phys(sm_state + 0x7f50, env->cr[3]); |
1433 |
stl_phys(sm_state + 0x7f58, env->cr[0]); |
1434 |
|
1435 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
1436 |
stl_phys(sm_state + 0x7f00, env->smbase);
|
1437 |
#else
|
1438 |
stl_phys(sm_state + 0x7ffc, env->cr[0]); |
1439 |
stl_phys(sm_state + 0x7ff8, env->cr[3]); |
1440 |
stl_phys(sm_state + 0x7ff4, compute_eflags());
|
1441 |
stl_phys(sm_state + 0x7ff0, env->eip);
|
1442 |
stl_phys(sm_state + 0x7fec, EDI);
|
1443 |
stl_phys(sm_state + 0x7fe8, ESI);
|
1444 |
stl_phys(sm_state + 0x7fe4, EBP);
|
1445 |
stl_phys(sm_state + 0x7fe0, ESP);
|
1446 |
stl_phys(sm_state + 0x7fdc, EBX);
|
1447 |
stl_phys(sm_state + 0x7fd8, EDX);
|
1448 |
stl_phys(sm_state + 0x7fd4, ECX);
|
1449 |
stl_phys(sm_state + 0x7fd0, EAX);
|
1450 |
stl_phys(sm_state + 0x7fcc, env->dr[6]); |
1451 |
stl_phys(sm_state + 0x7fc8, env->dr[7]); |
1452 |
|
1453 |
stl_phys(sm_state + 0x7fc4, env->tr.selector);
|
1454 |
stl_phys(sm_state + 0x7f64, env->tr.base);
|
1455 |
stl_phys(sm_state + 0x7f60, env->tr.limit);
|
1456 |
stl_phys(sm_state + 0x7f5c, (env->tr.flags >> 8) & 0xf0ff); |
1457 |
|
1458 |
stl_phys(sm_state + 0x7fc0, env->ldt.selector);
|
1459 |
stl_phys(sm_state + 0x7f80, env->ldt.base);
|
1460 |
stl_phys(sm_state + 0x7f7c, env->ldt.limit);
|
1461 |
stl_phys(sm_state + 0x7f78, (env->ldt.flags >> 8) & 0xf0ff); |
1462 |
|
1463 |
stl_phys(sm_state + 0x7f74, env->gdt.base);
|
1464 |
stl_phys(sm_state + 0x7f70, env->gdt.limit);
|
1465 |
|
1466 |
stl_phys(sm_state + 0x7f58, env->idt.base);
|
1467 |
stl_phys(sm_state + 0x7f54, env->idt.limit);
|
1468 |
|
1469 |
for(i = 0; i < 6; i++) { |
1470 |
dt = &env->segs[i]; |
1471 |
if (i < 3) |
1472 |
offset = 0x7f84 + i * 12; |
1473 |
else
|
1474 |
offset = 0x7f2c + (i - 3) * 12; |
1475 |
stl_phys(sm_state + 0x7fa8 + i * 4, dt->selector); |
1476 |
stl_phys(sm_state + offset + 8, dt->base);
|
1477 |
stl_phys(sm_state + offset + 4, dt->limit);
|
1478 |
stl_phys(sm_state + offset, (dt->flags >> 8) & 0xf0ff); |
1479 |
} |
1480 |
stl_phys(sm_state + 0x7f14, env->cr[4]); |
1481 |
|
1482 |
stl_phys(sm_state + 0x7efc, SMM_REVISION_ID);
|
1483 |
stl_phys(sm_state + 0x7ef8, env->smbase);
|
1484 |
#endif
|
1485 |
/* init SMM cpu state */
|
1486 |
|
1487 |
#ifdef TARGET_X86_64
|
1488 |
cpu_load_efer(env, 0);
|
1489 |
#endif
|
1490 |
load_eflags(0, ~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK));
|
1491 |
env->eip = 0x00008000;
|
1492 |
cpu_x86_load_seg_cache(env, R_CS, (env->smbase >> 4) & 0xffff, env->smbase, |
1493 |
0xffffffff, 0); |
1494 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffffffff, 0); |
1495 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffffffff, 0); |
1496 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffffffff, 0); |
1497 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffffffff, 0); |
1498 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffffffff, 0); |
1499 |
|
1500 |
cpu_x86_update_cr0(env, |
1501 |
env->cr[0] & ~(CR0_PE_MASK | CR0_EM_MASK | CR0_TS_MASK | CR0_PG_MASK));
|
1502 |
cpu_x86_update_cr4(env, 0);
|
1503 |
env->dr[7] = 0x00000400; |
1504 |
CC_OP = CC_OP_EFLAGS; |
1505 |
} |
1506 |
|
1507 |
void helper_rsm(void) |
1508 |
{ |
1509 |
target_ulong sm_state; |
1510 |
int i, offset;
|
1511 |
uint32_t val; |
1512 |
|
1513 |
sm_state = env->smbase + 0x8000;
|
1514 |
#ifdef TARGET_X86_64
|
1515 |
cpu_load_efer(env, ldq_phys(sm_state + 0x7ed0));
|
1516 |
|
1517 |
for(i = 0; i < 6; i++) { |
1518 |
offset = 0x7e00 + i * 16; |
1519 |
cpu_x86_load_seg_cache(env, i, |
1520 |
lduw_phys(sm_state + offset), |
1521 |
ldq_phys(sm_state + offset + 8),
|
1522 |
ldl_phys(sm_state + offset + 4),
|
1523 |
(lduw_phys(sm_state + offset + 2) & 0xf0ff) << 8); |
1524 |
} |
1525 |
|
1526 |
env->gdt.base = ldq_phys(sm_state + 0x7e68);
|
1527 |
env->gdt.limit = ldl_phys(sm_state + 0x7e64);
|
1528 |
|
1529 |
env->ldt.selector = lduw_phys(sm_state + 0x7e70);
|
1530 |
env->ldt.base = ldq_phys(sm_state + 0x7e78);
|
1531 |
env->ldt.limit = ldl_phys(sm_state + 0x7e74);
|
1532 |
env->ldt.flags = (lduw_phys(sm_state + 0x7e72) & 0xf0ff) << 8; |
1533 |
|
1534 |
env->idt.base = ldq_phys(sm_state + 0x7e88);
|
1535 |
env->idt.limit = ldl_phys(sm_state + 0x7e84);
|
1536 |
|
1537 |
env->tr.selector = lduw_phys(sm_state + 0x7e90);
|
1538 |
env->tr.base = ldq_phys(sm_state + 0x7e98);
|
1539 |
env->tr.limit = ldl_phys(sm_state + 0x7e94);
|
1540 |
env->tr.flags = (lduw_phys(sm_state + 0x7e92) & 0xf0ff) << 8; |
1541 |
|
1542 |
EAX = ldq_phys(sm_state + 0x7ff8);
|
1543 |
ECX = ldq_phys(sm_state + 0x7ff0);
|
1544 |
EDX = ldq_phys(sm_state + 0x7fe8);
|
1545 |
EBX = ldq_phys(sm_state + 0x7fe0);
|
1546 |
ESP = ldq_phys(sm_state + 0x7fd8);
|
1547 |
EBP = ldq_phys(sm_state + 0x7fd0);
|
1548 |
ESI = ldq_phys(sm_state + 0x7fc8);
|
1549 |
EDI = ldq_phys(sm_state + 0x7fc0);
|
1550 |
for(i = 8; i < 16; i++) |
1551 |
env->regs[i] = ldq_phys(sm_state + 0x7ff8 - i * 8); |
1552 |
env->eip = ldq_phys(sm_state + 0x7f78);
|
1553 |
load_eflags(ldl_phys(sm_state + 0x7f70),
|
1554 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
1555 |
env->dr[6] = ldl_phys(sm_state + 0x7f68); |
1556 |
env->dr[7] = ldl_phys(sm_state + 0x7f60); |
1557 |
|
1558 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f48));
|
1559 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7f50));
|
1560 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7f58));
|
1561 |
|
1562 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
1563 |
if (val & 0x20000) { |
1564 |
env->smbase = ldl_phys(sm_state + 0x7f00) & ~0x7fff; |
1565 |
} |
1566 |
#else
|
1567 |
cpu_x86_update_cr0(env, ldl_phys(sm_state + 0x7ffc));
|
1568 |
cpu_x86_update_cr3(env, ldl_phys(sm_state + 0x7ff8));
|
1569 |
load_eflags(ldl_phys(sm_state + 0x7ff4),
|
1570 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
1571 |
env->eip = ldl_phys(sm_state + 0x7ff0);
|
1572 |
EDI = ldl_phys(sm_state + 0x7fec);
|
1573 |
ESI = ldl_phys(sm_state + 0x7fe8);
|
1574 |
EBP = ldl_phys(sm_state + 0x7fe4);
|
1575 |
ESP = ldl_phys(sm_state + 0x7fe0);
|
1576 |
EBX = ldl_phys(sm_state + 0x7fdc);
|
1577 |
EDX = ldl_phys(sm_state + 0x7fd8);
|
1578 |
ECX = ldl_phys(sm_state + 0x7fd4);
|
1579 |
EAX = ldl_phys(sm_state + 0x7fd0);
|
1580 |
env->dr[6] = ldl_phys(sm_state + 0x7fcc); |
1581 |
env->dr[7] = ldl_phys(sm_state + 0x7fc8); |
1582 |
|
1583 |
env->tr.selector = ldl_phys(sm_state + 0x7fc4) & 0xffff; |
1584 |
env->tr.base = ldl_phys(sm_state + 0x7f64);
|
1585 |
env->tr.limit = ldl_phys(sm_state + 0x7f60);
|
1586 |
env->tr.flags = (ldl_phys(sm_state + 0x7f5c) & 0xf0ff) << 8; |
1587 |
|
1588 |
env->ldt.selector = ldl_phys(sm_state + 0x7fc0) & 0xffff; |
1589 |
env->ldt.base = ldl_phys(sm_state + 0x7f80);
|
1590 |
env->ldt.limit = ldl_phys(sm_state + 0x7f7c);
|
1591 |
env->ldt.flags = (ldl_phys(sm_state + 0x7f78) & 0xf0ff) << 8; |
1592 |
|
1593 |
env->gdt.base = ldl_phys(sm_state + 0x7f74);
|
1594 |
env->gdt.limit = ldl_phys(sm_state + 0x7f70);
|
1595 |
|
1596 |
env->idt.base = ldl_phys(sm_state + 0x7f58);
|
1597 |
env->idt.limit = ldl_phys(sm_state + 0x7f54);
|
1598 |
|
1599 |
for(i = 0; i < 6; i++) { |
1600 |
if (i < 3) |
1601 |
offset = 0x7f84 + i * 12; |
1602 |
else
|
1603 |
offset = 0x7f2c + (i - 3) * 12; |
1604 |
cpu_x86_load_seg_cache(env, i, |
1605 |
ldl_phys(sm_state + 0x7fa8 + i * 4) & 0xffff, |
1606 |
ldl_phys(sm_state + offset + 8),
|
1607 |
ldl_phys(sm_state + offset + 4),
|
1608 |
(ldl_phys(sm_state + offset) & 0xf0ff) << 8); |
1609 |
} |
1610 |
cpu_x86_update_cr4(env, ldl_phys(sm_state + 0x7f14));
|
1611 |
|
1612 |
val = ldl_phys(sm_state + 0x7efc); /* revision ID */ |
1613 |
if (val & 0x20000) { |
1614 |
env->smbase = ldl_phys(sm_state + 0x7ef8) & ~0x7fff; |
1615 |
} |
1616 |
#endif
|
1617 |
CC_OP = CC_OP_EFLAGS; |
1618 |
env->hflags &= ~HF_SMM_MASK; |
1619 |
cpu_smm_update(env); |
1620 |
|
1621 |
qemu_log_mask(CPU_LOG_INT, "SMM: after RSM\n");
|
1622 |
log_cpu_state_mask(CPU_LOG_INT, env, X86_DUMP_CCOP); |
1623 |
} |
1624 |
|
1625 |
#endif /* !CONFIG_USER_ONLY */ |
1626 |
|
1627 |
|
1628 |
/* division, flags are undefined */
|
1629 |
|
1630 |
void helper_divb_AL(target_ulong t0)
|
1631 |
{ |
1632 |
unsigned int num, den, q, r; |
1633 |
|
1634 |
num = (EAX & 0xffff);
|
1635 |
den = (t0 & 0xff);
|
1636 |
if (den == 0) { |
1637 |
raise_exception(EXCP00_DIVZ); |
1638 |
} |
1639 |
q = (num / den); |
1640 |
if (q > 0xff) |
1641 |
raise_exception(EXCP00_DIVZ); |
1642 |
q &= 0xff;
|
1643 |
r = (num % den) & 0xff;
|
1644 |
EAX = (EAX & ~0xffff) | (r << 8) | q; |
1645 |
} |
1646 |
|
1647 |
void helper_idivb_AL(target_ulong t0)
|
1648 |
{ |
1649 |
int num, den, q, r;
|
1650 |
|
1651 |
num = (int16_t)EAX; |
1652 |
den = (int8_t)t0; |
1653 |
if (den == 0) { |
1654 |
raise_exception(EXCP00_DIVZ); |
1655 |
} |
1656 |
q = (num / den); |
1657 |
if (q != (int8_t)q)
|
1658 |
raise_exception(EXCP00_DIVZ); |
1659 |
q &= 0xff;
|
1660 |
r = (num % den) & 0xff;
|
1661 |
EAX = (EAX & ~0xffff) | (r << 8) | q; |
1662 |
} |
1663 |
|
1664 |
void helper_divw_AX(target_ulong t0)
|
1665 |
{ |
1666 |
unsigned int num, den, q, r; |
1667 |
|
1668 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
1669 |
den = (t0 & 0xffff);
|
1670 |
if (den == 0) { |
1671 |
raise_exception(EXCP00_DIVZ); |
1672 |
} |
1673 |
q = (num / den); |
1674 |
if (q > 0xffff) |
1675 |
raise_exception(EXCP00_DIVZ); |
1676 |
q &= 0xffff;
|
1677 |
r = (num % den) & 0xffff;
|
1678 |
EAX = (EAX & ~0xffff) | q;
|
1679 |
EDX = (EDX & ~0xffff) | r;
|
1680 |
} |
1681 |
|
1682 |
void helper_idivw_AX(target_ulong t0)
|
1683 |
{ |
1684 |
int num, den, q, r;
|
1685 |
|
1686 |
num = (EAX & 0xffff) | ((EDX & 0xffff) << 16); |
1687 |
den = (int16_t)t0; |
1688 |
if (den == 0) { |
1689 |
raise_exception(EXCP00_DIVZ); |
1690 |
} |
1691 |
q = (num / den); |
1692 |
if (q != (int16_t)q)
|
1693 |
raise_exception(EXCP00_DIVZ); |
1694 |
q &= 0xffff;
|
1695 |
r = (num % den) & 0xffff;
|
1696 |
EAX = (EAX & ~0xffff) | q;
|
1697 |
EDX = (EDX & ~0xffff) | r;
|
1698 |
} |
1699 |
|
1700 |
void helper_divl_EAX(target_ulong t0)
|
1701 |
{ |
1702 |
unsigned int den, r; |
1703 |
uint64_t num, q; |
1704 |
|
1705 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
1706 |
den = t0; |
1707 |
if (den == 0) { |
1708 |
raise_exception(EXCP00_DIVZ); |
1709 |
} |
1710 |
q = (num / den); |
1711 |
r = (num % den); |
1712 |
if (q > 0xffffffff) |
1713 |
raise_exception(EXCP00_DIVZ); |
1714 |
EAX = (uint32_t)q; |
1715 |
EDX = (uint32_t)r; |
1716 |
} |
1717 |
|
1718 |
void helper_idivl_EAX(target_ulong t0)
|
1719 |
{ |
1720 |
int den, r;
|
1721 |
int64_t num, q; |
1722 |
|
1723 |
num = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
1724 |
den = t0; |
1725 |
if (den == 0) { |
1726 |
raise_exception(EXCP00_DIVZ); |
1727 |
} |
1728 |
q = (num / den); |
1729 |
r = (num % den); |
1730 |
if (q != (int32_t)q)
|
1731 |
raise_exception(EXCP00_DIVZ); |
1732 |
EAX = (uint32_t)q; |
1733 |
EDX = (uint32_t)r; |
1734 |
} |
1735 |
|
1736 |
/* bcd */
|
1737 |
|
1738 |
/* XXX: exception */
|
1739 |
void helper_aam(int base) |
1740 |
{ |
1741 |
int al, ah;
|
1742 |
al = EAX & 0xff;
|
1743 |
ah = al / base; |
1744 |
al = al % base; |
1745 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
1746 |
CC_DST = al; |
1747 |
} |
1748 |
|
1749 |
void helper_aad(int base) |
1750 |
{ |
1751 |
int al, ah;
|
1752 |
al = EAX & 0xff;
|
1753 |
ah = (EAX >> 8) & 0xff; |
1754 |
al = ((ah * base) + al) & 0xff;
|
1755 |
EAX = (EAX & ~0xffff) | al;
|
1756 |
CC_DST = al; |
1757 |
} |
1758 |
|
1759 |
void helper_aaa(void) |
1760 |
{ |
1761 |
int icarry;
|
1762 |
int al, ah, af;
|
1763 |
int eflags;
|
1764 |
|
1765 |
eflags = helper_cc_compute_all(CC_OP); |
1766 |
af = eflags & CC_A; |
1767 |
al = EAX & 0xff;
|
1768 |
ah = (EAX >> 8) & 0xff; |
1769 |
|
1770 |
icarry = (al > 0xf9);
|
1771 |
if (((al & 0x0f) > 9 ) || af) { |
1772 |
al = (al + 6) & 0x0f; |
1773 |
ah = (ah + 1 + icarry) & 0xff; |
1774 |
eflags |= CC_C | CC_A; |
1775 |
} else {
|
1776 |
eflags &= ~(CC_C | CC_A); |
1777 |
al &= 0x0f;
|
1778 |
} |
1779 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
1780 |
CC_SRC = eflags; |
1781 |
} |
1782 |
|
1783 |
void helper_aas(void) |
1784 |
{ |
1785 |
int icarry;
|
1786 |
int al, ah, af;
|
1787 |
int eflags;
|
1788 |
|
1789 |
eflags = helper_cc_compute_all(CC_OP); |
1790 |
af = eflags & CC_A; |
1791 |
al = EAX & 0xff;
|
1792 |
ah = (EAX >> 8) & 0xff; |
1793 |
|
1794 |
icarry = (al < 6);
|
1795 |
if (((al & 0x0f) > 9 ) || af) { |
1796 |
al = (al - 6) & 0x0f; |
1797 |
ah = (ah - 1 - icarry) & 0xff; |
1798 |
eflags |= CC_C | CC_A; |
1799 |
} else {
|
1800 |
eflags &= ~(CC_C | CC_A); |
1801 |
al &= 0x0f;
|
1802 |
} |
1803 |
EAX = (EAX & ~0xffff) | al | (ah << 8); |
1804 |
CC_SRC = eflags; |
1805 |
} |
1806 |
|
1807 |
void helper_daa(void) |
1808 |
{ |
1809 |
int al, af, cf;
|
1810 |
int eflags;
|
1811 |
|
1812 |
eflags = helper_cc_compute_all(CC_OP); |
1813 |
cf = eflags & CC_C; |
1814 |
af = eflags & CC_A; |
1815 |
al = EAX & 0xff;
|
1816 |
|
1817 |
eflags = 0;
|
1818 |
if (((al & 0x0f) > 9 ) || af) { |
1819 |
al = (al + 6) & 0xff; |
1820 |
eflags |= CC_A; |
1821 |
} |
1822 |
if ((al > 0x9f) || cf) { |
1823 |
al = (al + 0x60) & 0xff; |
1824 |
eflags |= CC_C; |
1825 |
} |
1826 |
EAX = (EAX & ~0xff) | al;
|
1827 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
1828 |
eflags |= (al == 0) << 6; /* zf */ |
1829 |
eflags |= parity_table[al]; /* pf */
|
1830 |
eflags |= (al & 0x80); /* sf */ |
1831 |
CC_SRC = eflags; |
1832 |
} |
1833 |
|
1834 |
void helper_das(void) |
1835 |
{ |
1836 |
int al, al1, af, cf;
|
1837 |
int eflags;
|
1838 |
|
1839 |
eflags = helper_cc_compute_all(CC_OP); |
1840 |
cf = eflags & CC_C; |
1841 |
af = eflags & CC_A; |
1842 |
al = EAX & 0xff;
|
1843 |
|
1844 |
eflags = 0;
|
1845 |
al1 = al; |
1846 |
if (((al & 0x0f) > 9 ) || af) { |
1847 |
eflags |= CC_A; |
1848 |
if (al < 6 || cf) |
1849 |
eflags |= CC_C; |
1850 |
al = (al - 6) & 0xff; |
1851 |
} |
1852 |
if ((al1 > 0x99) || cf) { |
1853 |
al = (al - 0x60) & 0xff; |
1854 |
eflags |= CC_C; |
1855 |
} |
1856 |
EAX = (EAX & ~0xff) | al;
|
1857 |
/* well, speed is not an issue here, so we compute the flags by hand */
|
1858 |
eflags |= (al == 0) << 6; /* zf */ |
1859 |
eflags |= parity_table[al]; /* pf */
|
1860 |
eflags |= (al & 0x80); /* sf */ |
1861 |
CC_SRC = eflags; |
1862 |
} |
1863 |
|
1864 |
void helper_into(int next_eip_addend) |
1865 |
{ |
1866 |
int eflags;
|
1867 |
eflags = helper_cc_compute_all(CC_OP); |
1868 |
if (eflags & CC_O) {
|
1869 |
raise_interrupt(EXCP04_INTO, 1, 0, next_eip_addend); |
1870 |
} |
1871 |
} |
1872 |
|
1873 |
void helper_cmpxchg8b(target_ulong a0)
|
1874 |
{ |
1875 |
uint64_t d; |
1876 |
int eflags;
|
1877 |
|
1878 |
eflags = helper_cc_compute_all(CC_OP); |
1879 |
d = ldq(a0); |
1880 |
if (d == (((uint64_t)EDX << 32) | (uint32_t)EAX)) { |
1881 |
stq(a0, ((uint64_t)ECX << 32) | (uint32_t)EBX);
|
1882 |
eflags |= CC_Z; |
1883 |
} else {
|
1884 |
/* always do the store */
|
1885 |
stq(a0, d); |
1886 |
EDX = (uint32_t)(d >> 32);
|
1887 |
EAX = (uint32_t)d; |
1888 |
eflags &= ~CC_Z; |
1889 |
} |
1890 |
CC_SRC = eflags; |
1891 |
} |
1892 |
|
1893 |
#ifdef TARGET_X86_64
|
1894 |
void helper_cmpxchg16b(target_ulong a0)
|
1895 |
{ |
1896 |
uint64_t d0, d1; |
1897 |
int eflags;
|
1898 |
|
1899 |
if ((a0 & 0xf) != 0) |
1900 |
raise_exception(EXCP0D_GPF); |
1901 |
eflags = helper_cc_compute_all(CC_OP); |
1902 |
d0 = ldq(a0); |
1903 |
d1 = ldq(a0 + 8);
|
1904 |
if (d0 == EAX && d1 == EDX) {
|
1905 |
stq(a0, EBX); |
1906 |
stq(a0 + 8, ECX);
|
1907 |
eflags |= CC_Z; |
1908 |
} else {
|
1909 |
/* always do the store */
|
1910 |
stq(a0, d0); |
1911 |
stq(a0 + 8, d1);
|
1912 |
EDX = d1; |
1913 |
EAX = d0; |
1914 |
eflags &= ~CC_Z; |
1915 |
} |
1916 |
CC_SRC = eflags; |
1917 |
} |
1918 |
#endif
|
1919 |
|
1920 |
void helper_single_step(void) |
1921 |
{ |
1922 |
#ifndef CONFIG_USER_ONLY
|
1923 |
check_hw_breakpoints(env, 1);
|
1924 |
env->dr[6] |= DR6_BS;
|
1925 |
#endif
|
1926 |
raise_exception(EXCP01_DB); |
1927 |
} |
1928 |
|
1929 |
void helper_cpuid(void) |
1930 |
{ |
1931 |
uint32_t eax, ebx, ecx, edx; |
1932 |
|
1933 |
helper_svm_check_intercept_param(SVM_EXIT_CPUID, 0);
|
1934 |
|
1935 |
cpu_x86_cpuid(env, (uint32_t)EAX, (uint32_t)ECX, &eax, &ebx, &ecx, &edx); |
1936 |
EAX = eax; |
1937 |
EBX = ebx; |
1938 |
ECX = ecx; |
1939 |
EDX = edx; |
1940 |
} |
1941 |
|
1942 |
void helper_enter_level(int level, int data32, target_ulong t1) |
1943 |
{ |
1944 |
target_ulong ssp; |
1945 |
uint32_t esp_mask, esp, ebp; |
1946 |
|
1947 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
1948 |
ssp = env->segs[R_SS].base; |
1949 |
ebp = EBP; |
1950 |
esp = ESP; |
1951 |
if (data32) {
|
1952 |
/* 32 bit */
|
1953 |
esp -= 4;
|
1954 |
while (--level) {
|
1955 |
esp -= 4;
|
1956 |
ebp -= 4;
|
1957 |
stl(ssp + (esp & esp_mask), ldl(ssp + (ebp & esp_mask))); |
1958 |
} |
1959 |
esp -= 4;
|
1960 |
stl(ssp + (esp & esp_mask), t1); |
1961 |
} else {
|
1962 |
/* 16 bit */
|
1963 |
esp -= 2;
|
1964 |
while (--level) {
|
1965 |
esp -= 2;
|
1966 |
ebp -= 2;
|
1967 |
stw(ssp + (esp & esp_mask), lduw(ssp + (ebp & esp_mask))); |
1968 |
} |
1969 |
esp -= 2;
|
1970 |
stw(ssp + (esp & esp_mask), t1); |
1971 |
} |
1972 |
} |
1973 |
|
1974 |
#ifdef TARGET_X86_64
|
1975 |
void helper_enter64_level(int level, int data64, target_ulong t1) |
1976 |
{ |
1977 |
target_ulong esp, ebp; |
1978 |
ebp = EBP; |
1979 |
esp = ESP; |
1980 |
|
1981 |
if (data64) {
|
1982 |
/* 64 bit */
|
1983 |
esp -= 8;
|
1984 |
while (--level) {
|
1985 |
esp -= 8;
|
1986 |
ebp -= 8;
|
1987 |
stq(esp, ldq(ebp)); |
1988 |
} |
1989 |
esp -= 8;
|
1990 |
stq(esp, t1); |
1991 |
} else {
|
1992 |
/* 16 bit */
|
1993 |
esp -= 2;
|
1994 |
while (--level) {
|
1995 |
esp -= 2;
|
1996 |
ebp -= 2;
|
1997 |
stw(esp, lduw(ebp)); |
1998 |
} |
1999 |
esp -= 2;
|
2000 |
stw(esp, t1); |
2001 |
} |
2002 |
} |
2003 |
#endif
|
2004 |
|
2005 |
void helper_lldt(int selector) |
2006 |
{ |
2007 |
SegmentCache *dt; |
2008 |
uint32_t e1, e2; |
2009 |
int index, entry_limit;
|
2010 |
target_ulong ptr; |
2011 |
|
2012 |
selector &= 0xffff;
|
2013 |
if ((selector & 0xfffc) == 0) { |
2014 |
/* XXX: NULL selector case: invalid LDT */
|
2015 |
env->ldt.base = 0;
|
2016 |
env->ldt.limit = 0;
|
2017 |
} else {
|
2018 |
if (selector & 0x4) |
2019 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2020 |
dt = &env->gdt; |
2021 |
index = selector & ~7;
|
2022 |
#ifdef TARGET_X86_64
|
2023 |
if (env->hflags & HF_LMA_MASK)
|
2024 |
entry_limit = 15;
|
2025 |
else
|
2026 |
#endif
|
2027 |
entry_limit = 7;
|
2028 |
if ((index + entry_limit) > dt->limit)
|
2029 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2030 |
ptr = dt->base + index; |
2031 |
e1 = ldl_kernel(ptr); |
2032 |
e2 = ldl_kernel(ptr + 4);
|
2033 |
if ((e2 & DESC_S_MASK) || ((e2 >> DESC_TYPE_SHIFT) & 0xf) != 2) |
2034 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2035 |
if (!(e2 & DESC_P_MASK))
|
2036 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2037 |
#ifdef TARGET_X86_64
|
2038 |
if (env->hflags & HF_LMA_MASK) {
|
2039 |
uint32_t e3; |
2040 |
e3 = ldl_kernel(ptr + 8);
|
2041 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
2042 |
env->ldt.base |= (target_ulong)e3 << 32;
|
2043 |
} else
|
2044 |
#endif
|
2045 |
{ |
2046 |
load_seg_cache_raw_dt(&env->ldt, e1, e2); |
2047 |
} |
2048 |
} |
2049 |
env->ldt.selector = selector; |
2050 |
} |
2051 |
|
2052 |
void helper_ltr(int selector) |
2053 |
{ |
2054 |
SegmentCache *dt; |
2055 |
uint32_t e1, e2; |
2056 |
int index, type, entry_limit;
|
2057 |
target_ulong ptr; |
2058 |
|
2059 |
selector &= 0xffff;
|
2060 |
if ((selector & 0xfffc) == 0) { |
2061 |
/* NULL selector case: invalid TR */
|
2062 |
env->tr.base = 0;
|
2063 |
env->tr.limit = 0;
|
2064 |
env->tr.flags = 0;
|
2065 |
} else {
|
2066 |
if (selector & 0x4) |
2067 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2068 |
dt = &env->gdt; |
2069 |
index = selector & ~7;
|
2070 |
#ifdef TARGET_X86_64
|
2071 |
if (env->hflags & HF_LMA_MASK)
|
2072 |
entry_limit = 15;
|
2073 |
else
|
2074 |
#endif
|
2075 |
entry_limit = 7;
|
2076 |
if ((index + entry_limit) > dt->limit)
|
2077 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2078 |
ptr = dt->base + index; |
2079 |
e1 = ldl_kernel(ptr); |
2080 |
e2 = ldl_kernel(ptr + 4);
|
2081 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
2082 |
if ((e2 & DESC_S_MASK) ||
|
2083 |
(type != 1 && type != 9)) |
2084 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2085 |
if (!(e2 & DESC_P_MASK))
|
2086 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2087 |
#ifdef TARGET_X86_64
|
2088 |
if (env->hflags & HF_LMA_MASK) {
|
2089 |
uint32_t e3, e4; |
2090 |
e3 = ldl_kernel(ptr + 8);
|
2091 |
e4 = ldl_kernel(ptr + 12);
|
2092 |
if ((e4 >> DESC_TYPE_SHIFT) & 0xf) |
2093 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2094 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
2095 |
env->tr.base |= (target_ulong)e3 << 32;
|
2096 |
} else
|
2097 |
#endif
|
2098 |
{ |
2099 |
load_seg_cache_raw_dt(&env->tr, e1, e2); |
2100 |
} |
2101 |
e2 |= DESC_TSS_BUSY_MASK; |
2102 |
stl_kernel(ptr + 4, e2);
|
2103 |
} |
2104 |
env->tr.selector = selector; |
2105 |
} |
2106 |
|
2107 |
/* only works if protected mode and not VM86. seg_reg must be != R_CS */
|
2108 |
void helper_load_seg(int seg_reg, int selector) |
2109 |
{ |
2110 |
uint32_t e1, e2; |
2111 |
int cpl, dpl, rpl;
|
2112 |
SegmentCache *dt; |
2113 |
int index;
|
2114 |
target_ulong ptr; |
2115 |
|
2116 |
selector &= 0xffff;
|
2117 |
cpl = env->hflags & HF_CPL_MASK; |
2118 |
if ((selector & 0xfffc) == 0) { |
2119 |
/* null selector case */
|
2120 |
if (seg_reg == R_SS
|
2121 |
#ifdef TARGET_X86_64
|
2122 |
&& (!(env->hflags & HF_CS64_MASK) || cpl == 3)
|
2123 |
#endif
|
2124 |
) |
2125 |
raise_exception_err(EXCP0D_GPF, 0);
|
2126 |
cpu_x86_load_seg_cache(env, seg_reg, selector, 0, 0, 0); |
2127 |
} else {
|
2128 |
|
2129 |
if (selector & 0x4) |
2130 |
dt = &env->ldt; |
2131 |
else
|
2132 |
dt = &env->gdt; |
2133 |
index = selector & ~7;
|
2134 |
if ((index + 7) > dt->limit) |
2135 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2136 |
ptr = dt->base + index; |
2137 |
e1 = ldl_kernel(ptr); |
2138 |
e2 = ldl_kernel(ptr + 4);
|
2139 |
|
2140 |
if (!(e2 & DESC_S_MASK))
|
2141 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2142 |
rpl = selector & 3;
|
2143 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2144 |
if (seg_reg == R_SS) {
|
2145 |
/* must be writable segment */
|
2146 |
if ((e2 & DESC_CS_MASK) || !(e2 & DESC_W_MASK))
|
2147 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2148 |
if (rpl != cpl || dpl != cpl)
|
2149 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2150 |
} else {
|
2151 |
/* must be readable segment */
|
2152 |
if ((e2 & (DESC_CS_MASK | DESC_R_MASK)) == DESC_CS_MASK)
|
2153 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2154 |
|
2155 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
2156 |
/* if not conforming code, test rights */
|
2157 |
if (dpl < cpl || dpl < rpl)
|
2158 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2159 |
} |
2160 |
} |
2161 |
|
2162 |
if (!(e2 & DESC_P_MASK)) {
|
2163 |
if (seg_reg == R_SS)
|
2164 |
raise_exception_err(EXCP0C_STACK, selector & 0xfffc);
|
2165 |
else
|
2166 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2167 |
} |
2168 |
|
2169 |
/* set the access bit if not already set */
|
2170 |
if (!(e2 & DESC_A_MASK)) {
|
2171 |
e2 |= DESC_A_MASK; |
2172 |
stl_kernel(ptr + 4, e2);
|
2173 |
} |
2174 |
|
2175 |
cpu_x86_load_seg_cache(env, seg_reg, selector, |
2176 |
get_seg_base(e1, e2), |
2177 |
get_seg_limit(e1, e2), |
2178 |
e2); |
2179 |
#if 0
|
2180 |
qemu_log("load_seg: sel=0x%04x base=0x%08lx limit=0x%08lx flags=%08x\n",
|
2181 |
selector, (unsigned long)sc->base, sc->limit, sc->flags);
|
2182 |
#endif
|
2183 |
} |
2184 |
} |
2185 |
|
2186 |
/* protected mode jump */
|
2187 |
void helper_ljmp_protected(int new_cs, target_ulong new_eip, |
2188 |
int next_eip_addend)
|
2189 |
{ |
2190 |
int gate_cs, type;
|
2191 |
uint32_t e1, e2, cpl, dpl, rpl, limit; |
2192 |
target_ulong next_eip; |
2193 |
|
2194 |
if ((new_cs & 0xfffc) == 0) |
2195 |
raise_exception_err(EXCP0D_GPF, 0);
|
2196 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2197 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2198 |
cpl = env->hflags & HF_CPL_MASK; |
2199 |
if (e2 & DESC_S_MASK) {
|
2200 |
if (!(e2 & DESC_CS_MASK))
|
2201 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2202 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2203 |
if (e2 & DESC_C_MASK) {
|
2204 |
/* conforming code segment */
|
2205 |
if (dpl > cpl)
|
2206 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2207 |
} else {
|
2208 |
/* non conforming code segment */
|
2209 |
rpl = new_cs & 3;
|
2210 |
if (rpl > cpl)
|
2211 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2212 |
if (dpl != cpl)
|
2213 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2214 |
} |
2215 |
if (!(e2 & DESC_P_MASK))
|
2216 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2217 |
limit = get_seg_limit(e1, e2); |
2218 |
if (new_eip > limit &&
|
2219 |
!(env->hflags & HF_LMA_MASK) && !(e2 & DESC_L_MASK)) |
2220 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2221 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2222 |
get_seg_base(e1, e2), limit, e2); |
2223 |
EIP = new_eip; |
2224 |
} else {
|
2225 |
/* jump to call or task gate */
|
2226 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2227 |
rpl = new_cs & 3;
|
2228 |
cpl = env->hflags & HF_CPL_MASK; |
2229 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
2230 |
switch(type) {
|
2231 |
case 1: /* 286 TSS */ |
2232 |
case 9: /* 386 TSS */ |
2233 |
case 5: /* task gate */ |
2234 |
if (dpl < cpl || dpl < rpl)
|
2235 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2236 |
next_eip = env->eip + next_eip_addend; |
2237 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_JMP, next_eip); |
2238 |
CC_OP = CC_OP_EFLAGS; |
2239 |
break;
|
2240 |
case 4: /* 286 call gate */ |
2241 |
case 12: /* 386 call gate */ |
2242 |
if ((dpl < cpl) || (dpl < rpl))
|
2243 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2244 |
if (!(e2 & DESC_P_MASK))
|
2245 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2246 |
gate_cs = e1 >> 16;
|
2247 |
new_eip = (e1 & 0xffff);
|
2248 |
if (type == 12) |
2249 |
new_eip |= (e2 & 0xffff0000);
|
2250 |
if (load_segment(&e1, &e2, gate_cs) != 0) |
2251 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2252 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2253 |
/* must be code segment */
|
2254 |
if (((e2 & (DESC_S_MASK | DESC_CS_MASK)) !=
|
2255 |
(DESC_S_MASK | DESC_CS_MASK))) |
2256 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2257 |
if (((e2 & DESC_C_MASK) && (dpl > cpl)) ||
|
2258 |
(!(e2 & DESC_C_MASK) && (dpl != cpl))) |
2259 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2260 |
if (!(e2 & DESC_P_MASK))
|
2261 |
raise_exception_err(EXCP0D_GPF, gate_cs & 0xfffc);
|
2262 |
limit = get_seg_limit(e1, e2); |
2263 |
if (new_eip > limit)
|
2264 |
raise_exception_err(EXCP0D_GPF, 0);
|
2265 |
cpu_x86_load_seg_cache(env, R_CS, (gate_cs & 0xfffc) | cpl,
|
2266 |
get_seg_base(e1, e2), limit, e2); |
2267 |
EIP = new_eip; |
2268 |
break;
|
2269 |
default:
|
2270 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2271 |
break;
|
2272 |
} |
2273 |
} |
2274 |
} |
2275 |
|
2276 |
/* real mode call */
|
2277 |
void helper_lcall_real(int new_cs, target_ulong new_eip1, |
2278 |
int shift, int next_eip) |
2279 |
{ |
2280 |
int new_eip;
|
2281 |
uint32_t esp, esp_mask; |
2282 |
target_ulong ssp; |
2283 |
|
2284 |
new_eip = new_eip1; |
2285 |
esp = ESP; |
2286 |
esp_mask = get_sp_mask(env->segs[R_SS].flags); |
2287 |
ssp = env->segs[R_SS].base; |
2288 |
if (shift) {
|
2289 |
PUSHL(ssp, esp, esp_mask, env->segs[R_CS].selector); |
2290 |
PUSHL(ssp, esp, esp_mask, next_eip); |
2291 |
} else {
|
2292 |
PUSHW(ssp, esp, esp_mask, env->segs[R_CS].selector); |
2293 |
PUSHW(ssp, esp, esp_mask, next_eip); |
2294 |
} |
2295 |
|
2296 |
SET_ESP(esp, esp_mask); |
2297 |
env->eip = new_eip; |
2298 |
env->segs[R_CS].selector = new_cs; |
2299 |
env->segs[R_CS].base = (new_cs << 4);
|
2300 |
} |
2301 |
|
2302 |
/* protected mode call */
|
2303 |
void helper_lcall_protected(int new_cs, target_ulong new_eip, |
2304 |
int shift, int next_eip_addend) |
2305 |
{ |
2306 |
int new_stack, i;
|
2307 |
uint32_t e1, e2, cpl, dpl, rpl, selector, offset, param_count; |
2308 |
uint32_t ss = 0, ss_e1 = 0, ss_e2 = 0, sp, type, ss_dpl, sp_mask; |
2309 |
uint32_t val, limit, old_sp_mask; |
2310 |
target_ulong ssp, old_ssp, next_eip; |
2311 |
|
2312 |
next_eip = env->eip + next_eip_addend; |
2313 |
LOG_PCALL("lcall %04x:%08x s=%d\n", new_cs, (uint32_t)new_eip, shift);
|
2314 |
LOG_PCALL_STATE(env); |
2315 |
if ((new_cs & 0xfffc) == 0) |
2316 |
raise_exception_err(EXCP0D_GPF, 0);
|
2317 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2318 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2319 |
cpl = env->hflags & HF_CPL_MASK; |
2320 |
LOG_PCALL("desc=%08x:%08x\n", e1, e2);
|
2321 |
if (e2 & DESC_S_MASK) {
|
2322 |
if (!(e2 & DESC_CS_MASK))
|
2323 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2324 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2325 |
if (e2 & DESC_C_MASK) {
|
2326 |
/* conforming code segment */
|
2327 |
if (dpl > cpl)
|
2328 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2329 |
} else {
|
2330 |
/* non conforming code segment */
|
2331 |
rpl = new_cs & 3;
|
2332 |
if (rpl > cpl)
|
2333 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2334 |
if (dpl != cpl)
|
2335 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2336 |
} |
2337 |
if (!(e2 & DESC_P_MASK))
|
2338 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2339 |
|
2340 |
#ifdef TARGET_X86_64
|
2341 |
/* XXX: check 16/32 bit cases in long mode */
|
2342 |
if (shift == 2) { |
2343 |
target_ulong rsp; |
2344 |
/* 64 bit case */
|
2345 |
rsp = ESP; |
2346 |
PUSHQ(rsp, env->segs[R_CS].selector); |
2347 |
PUSHQ(rsp, next_eip); |
2348 |
/* from this point, not restartable */
|
2349 |
ESP = rsp; |
2350 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2351 |
get_seg_base(e1, e2), |
2352 |
get_seg_limit(e1, e2), e2); |
2353 |
EIP = new_eip; |
2354 |
} else
|
2355 |
#endif
|
2356 |
{ |
2357 |
sp = ESP; |
2358 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2359 |
ssp = env->segs[R_SS].base; |
2360 |
if (shift) {
|
2361 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2362 |
PUSHL(ssp, sp, sp_mask, next_eip); |
2363 |
} else {
|
2364 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2365 |
PUSHW(ssp, sp, sp_mask, next_eip); |
2366 |
} |
2367 |
|
2368 |
limit = get_seg_limit(e1, e2); |
2369 |
if (new_eip > limit)
|
2370 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2371 |
/* from this point, not restartable */
|
2372 |
SET_ESP(sp, sp_mask); |
2373 |
cpu_x86_load_seg_cache(env, R_CS, (new_cs & 0xfffc) | cpl,
|
2374 |
get_seg_base(e1, e2), limit, e2); |
2375 |
EIP = new_eip; |
2376 |
} |
2377 |
} else {
|
2378 |
/* check gate type */
|
2379 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x1f;
|
2380 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2381 |
rpl = new_cs & 3;
|
2382 |
switch(type) {
|
2383 |
case 1: /* available 286 TSS */ |
2384 |
case 9: /* available 386 TSS */ |
2385 |
case 5: /* task gate */ |
2386 |
if (dpl < cpl || dpl < rpl)
|
2387 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2388 |
switch_tss(new_cs, e1, e2, SWITCH_TSS_CALL, next_eip); |
2389 |
CC_OP = CC_OP_EFLAGS; |
2390 |
return;
|
2391 |
case 4: /* 286 call gate */ |
2392 |
case 12: /* 386 call gate */ |
2393 |
break;
|
2394 |
default:
|
2395 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2396 |
break;
|
2397 |
} |
2398 |
shift = type >> 3;
|
2399 |
|
2400 |
if (dpl < cpl || dpl < rpl)
|
2401 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2402 |
/* check valid bit */
|
2403 |
if (!(e2 & DESC_P_MASK))
|
2404 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2405 |
selector = e1 >> 16;
|
2406 |
offset = (e2 & 0xffff0000) | (e1 & 0x0000ffff); |
2407 |
param_count = e2 & 0x1f;
|
2408 |
if ((selector & 0xfffc) == 0) |
2409 |
raise_exception_err(EXCP0D_GPF, 0);
|
2410 |
|
2411 |
if (load_segment(&e1, &e2, selector) != 0) |
2412 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2413 |
if (!(e2 & DESC_S_MASK) || !(e2 & (DESC_CS_MASK)))
|
2414 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2415 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2416 |
if (dpl > cpl)
|
2417 |
raise_exception_err(EXCP0D_GPF, selector & 0xfffc);
|
2418 |
if (!(e2 & DESC_P_MASK))
|
2419 |
raise_exception_err(EXCP0B_NOSEG, selector & 0xfffc);
|
2420 |
|
2421 |
if (!(e2 & DESC_C_MASK) && dpl < cpl) {
|
2422 |
/* to inner privilege */
|
2423 |
get_ss_esp_from_tss(&ss, &sp, dpl); |
2424 |
LOG_PCALL("new ss:esp=%04x:%08x param_count=%d ESP=" TARGET_FMT_lx "\n", |
2425 |
ss, sp, param_count, ESP); |
2426 |
if ((ss & 0xfffc) == 0) |
2427 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2428 |
if ((ss & 3) != dpl) |
2429 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2430 |
if (load_segment(&ss_e1, &ss_e2, ss) != 0) |
2431 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2432 |
ss_dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
2433 |
if (ss_dpl != dpl)
|
2434 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2435 |
if (!(ss_e2 & DESC_S_MASK) ||
|
2436 |
(ss_e2 & DESC_CS_MASK) || |
2437 |
!(ss_e2 & DESC_W_MASK)) |
2438 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2439 |
if (!(ss_e2 & DESC_P_MASK))
|
2440 |
raise_exception_err(EXCP0A_TSS, ss & 0xfffc);
|
2441 |
|
2442 |
// push_size = ((param_count * 2) + 8) << shift;
|
2443 |
|
2444 |
old_sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2445 |
old_ssp = env->segs[R_SS].base; |
2446 |
|
2447 |
sp_mask = get_sp_mask(ss_e2); |
2448 |
ssp = get_seg_base(ss_e1, ss_e2); |
2449 |
if (shift) {
|
2450 |
PUSHL(ssp, sp, sp_mask, env->segs[R_SS].selector); |
2451 |
PUSHL(ssp, sp, sp_mask, ESP); |
2452 |
for(i = param_count - 1; i >= 0; i--) { |
2453 |
val = ldl_kernel(old_ssp + ((ESP + i * 4) & old_sp_mask));
|
2454 |
PUSHL(ssp, sp, sp_mask, val); |
2455 |
} |
2456 |
} else {
|
2457 |
PUSHW(ssp, sp, sp_mask, env->segs[R_SS].selector); |
2458 |
PUSHW(ssp, sp, sp_mask, ESP); |
2459 |
for(i = param_count - 1; i >= 0; i--) { |
2460 |
val = lduw_kernel(old_ssp + ((ESP + i * 2) & old_sp_mask));
|
2461 |
PUSHW(ssp, sp, sp_mask, val); |
2462 |
} |
2463 |
} |
2464 |
new_stack = 1;
|
2465 |
} else {
|
2466 |
/* to same privilege */
|
2467 |
sp = ESP; |
2468 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2469 |
ssp = env->segs[R_SS].base; |
2470 |
// push_size = (4 << shift);
|
2471 |
new_stack = 0;
|
2472 |
} |
2473 |
|
2474 |
if (shift) {
|
2475 |
PUSHL(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2476 |
PUSHL(ssp, sp, sp_mask, next_eip); |
2477 |
} else {
|
2478 |
PUSHW(ssp, sp, sp_mask, env->segs[R_CS].selector); |
2479 |
PUSHW(ssp, sp, sp_mask, next_eip); |
2480 |
} |
2481 |
|
2482 |
/* from this point, not restartable */
|
2483 |
|
2484 |
if (new_stack) {
|
2485 |
ss = (ss & ~3) | dpl;
|
2486 |
cpu_x86_load_seg_cache(env, R_SS, ss, |
2487 |
ssp, |
2488 |
get_seg_limit(ss_e1, ss_e2), |
2489 |
ss_e2); |
2490 |
} |
2491 |
|
2492 |
selector = (selector & ~3) | dpl;
|
2493 |
cpu_x86_load_seg_cache(env, R_CS, selector, |
2494 |
get_seg_base(e1, e2), |
2495 |
get_seg_limit(e1, e2), |
2496 |
e2); |
2497 |
cpu_x86_set_cpl(env, dpl); |
2498 |
SET_ESP(sp, sp_mask); |
2499 |
EIP = offset; |
2500 |
} |
2501 |
} |
2502 |
|
2503 |
/* real and vm86 mode iret */
|
2504 |
void helper_iret_real(int shift) |
2505 |
{ |
2506 |
uint32_t sp, new_cs, new_eip, new_eflags, sp_mask; |
2507 |
target_ulong ssp; |
2508 |
int eflags_mask;
|
2509 |
|
2510 |
sp_mask = 0xffff; /* XXXX: use SS segment size ? */ |
2511 |
sp = ESP; |
2512 |
ssp = env->segs[R_SS].base; |
2513 |
if (shift == 1) { |
2514 |
/* 32 bits */
|
2515 |
POPL(ssp, sp, sp_mask, new_eip); |
2516 |
POPL(ssp, sp, sp_mask, new_cs); |
2517 |
new_cs &= 0xffff;
|
2518 |
POPL(ssp, sp, sp_mask, new_eflags); |
2519 |
} else {
|
2520 |
/* 16 bits */
|
2521 |
POPW(ssp, sp, sp_mask, new_eip); |
2522 |
POPW(ssp, sp, sp_mask, new_cs); |
2523 |
POPW(ssp, sp, sp_mask, new_eflags); |
2524 |
} |
2525 |
ESP = (ESP & ~sp_mask) | (sp & sp_mask); |
2526 |
env->segs[R_CS].selector = new_cs; |
2527 |
env->segs[R_CS].base = (new_cs << 4);
|
2528 |
env->eip = new_eip; |
2529 |
if (env->eflags & VM_MASK)
|
2530 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | RF_MASK | NT_MASK; |
2531 |
else
|
2532 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | IF_MASK | IOPL_MASK | RF_MASK | NT_MASK; |
2533 |
if (shift == 0) |
2534 |
eflags_mask &= 0xffff;
|
2535 |
load_eflags(new_eflags, eflags_mask); |
2536 |
env->hflags2 &= ~HF2_NMI_MASK; |
2537 |
} |
2538 |
|
2539 |
static inline void validate_seg(int seg_reg, int cpl) |
2540 |
{ |
2541 |
int dpl;
|
2542 |
uint32_t e2; |
2543 |
|
2544 |
/* XXX: on x86_64, we do not want to nullify FS and GS because
|
2545 |
they may still contain a valid base. I would be interested to
|
2546 |
know how a real x86_64 CPU behaves */
|
2547 |
if ((seg_reg == R_FS || seg_reg == R_GS) &&
|
2548 |
(env->segs[seg_reg].selector & 0xfffc) == 0) |
2549 |
return;
|
2550 |
|
2551 |
e2 = env->segs[seg_reg].flags; |
2552 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2553 |
if (!(e2 & DESC_CS_MASK) || !(e2 & DESC_C_MASK)) {
|
2554 |
/* data or non conforming code segment */
|
2555 |
if (dpl < cpl) {
|
2556 |
cpu_x86_load_seg_cache(env, seg_reg, 0, 0, 0, 0); |
2557 |
} |
2558 |
} |
2559 |
} |
2560 |
|
2561 |
/* protected mode iret */
|
2562 |
static inline void helper_ret_protected(int shift, int is_iret, int addend) |
2563 |
{ |
2564 |
uint32_t new_cs, new_eflags, new_ss; |
2565 |
uint32_t new_es, new_ds, new_fs, new_gs; |
2566 |
uint32_t e1, e2, ss_e1, ss_e2; |
2567 |
int cpl, dpl, rpl, eflags_mask, iopl;
|
2568 |
target_ulong ssp, sp, new_eip, new_esp, sp_mask; |
2569 |
|
2570 |
#ifdef TARGET_X86_64
|
2571 |
if (shift == 2) |
2572 |
sp_mask = -1;
|
2573 |
else
|
2574 |
#endif
|
2575 |
sp_mask = get_sp_mask(env->segs[R_SS].flags); |
2576 |
sp = ESP; |
2577 |
ssp = env->segs[R_SS].base; |
2578 |
new_eflags = 0; /* avoid warning */ |
2579 |
#ifdef TARGET_X86_64
|
2580 |
if (shift == 2) { |
2581 |
POPQ(sp, new_eip); |
2582 |
POPQ(sp, new_cs); |
2583 |
new_cs &= 0xffff;
|
2584 |
if (is_iret) {
|
2585 |
POPQ(sp, new_eflags); |
2586 |
} |
2587 |
} else
|
2588 |
#endif
|
2589 |
if (shift == 1) { |
2590 |
/* 32 bits */
|
2591 |
POPL(ssp, sp, sp_mask, new_eip); |
2592 |
POPL(ssp, sp, sp_mask, new_cs); |
2593 |
new_cs &= 0xffff;
|
2594 |
if (is_iret) {
|
2595 |
POPL(ssp, sp, sp_mask, new_eflags); |
2596 |
if (new_eflags & VM_MASK)
|
2597 |
goto return_to_vm86;
|
2598 |
} |
2599 |
} else {
|
2600 |
/* 16 bits */
|
2601 |
POPW(ssp, sp, sp_mask, new_eip); |
2602 |
POPW(ssp, sp, sp_mask, new_cs); |
2603 |
if (is_iret)
|
2604 |
POPW(ssp, sp, sp_mask, new_eflags); |
2605 |
} |
2606 |
LOG_PCALL("lret new %04x:" TARGET_FMT_lx " s=%d addend=0x%x\n", |
2607 |
new_cs, new_eip, shift, addend); |
2608 |
LOG_PCALL_STATE(env); |
2609 |
if ((new_cs & 0xfffc) == 0) |
2610 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2611 |
if (load_segment(&e1, &e2, new_cs) != 0) |
2612 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2613 |
if (!(e2 & DESC_S_MASK) ||
|
2614 |
!(e2 & DESC_CS_MASK)) |
2615 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2616 |
cpl = env->hflags & HF_CPL_MASK; |
2617 |
rpl = new_cs & 3;
|
2618 |
if (rpl < cpl)
|
2619 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2620 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
2621 |
if (e2 & DESC_C_MASK) {
|
2622 |
if (dpl > rpl)
|
2623 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2624 |
} else {
|
2625 |
if (dpl != rpl)
|
2626 |
raise_exception_err(EXCP0D_GPF, new_cs & 0xfffc);
|
2627 |
} |
2628 |
if (!(e2 & DESC_P_MASK))
|
2629 |
raise_exception_err(EXCP0B_NOSEG, new_cs & 0xfffc);
|
2630 |
|
2631 |
sp += addend; |
2632 |
if (rpl == cpl && (!(env->hflags & HF_CS64_MASK) ||
|
2633 |
((env->hflags & HF_CS64_MASK) && !is_iret))) { |
2634 |
/* return to same privilege level */
|
2635 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
2636 |
get_seg_base(e1, e2), |
2637 |
get_seg_limit(e1, e2), |
2638 |
e2); |
2639 |
} else {
|
2640 |
/* return to different privilege level */
|
2641 |
#ifdef TARGET_X86_64
|
2642 |
if (shift == 2) { |
2643 |
POPQ(sp, new_esp); |
2644 |
POPQ(sp, new_ss); |
2645 |
new_ss &= 0xffff;
|
2646 |
} else
|
2647 |
#endif
|
2648 |
if (shift == 1) { |
2649 |
/* 32 bits */
|
2650 |
POPL(ssp, sp, sp_mask, new_esp); |
2651 |
POPL(ssp, sp, sp_mask, new_ss); |
2652 |
new_ss &= 0xffff;
|
2653 |
} else {
|
2654 |
/* 16 bits */
|
2655 |
POPW(ssp, sp, sp_mask, new_esp); |
2656 |
POPW(ssp, sp, sp_mask, new_ss); |
2657 |
} |
2658 |
LOG_PCALL("new ss:esp=%04x:" TARGET_FMT_lx "\n", |
2659 |
new_ss, new_esp); |
2660 |
if ((new_ss & 0xfffc) == 0) { |
2661 |
#ifdef TARGET_X86_64
|
2662 |
/* NULL ss is allowed in long mode if cpl != 3*/
|
2663 |
/* XXX: test CS64 ? */
|
2664 |
if ((env->hflags & HF_LMA_MASK) && rpl != 3) { |
2665 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
2666 |
0, 0xffffffff, |
2667 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2668 |
DESC_S_MASK | (rpl << DESC_DPL_SHIFT) | |
2669 |
DESC_W_MASK | DESC_A_MASK); |
2670 |
ss_e2 = DESC_B_MASK; /* XXX: should not be needed ? */
|
2671 |
} else
|
2672 |
#endif
|
2673 |
{ |
2674 |
raise_exception_err(EXCP0D_GPF, 0);
|
2675 |
} |
2676 |
} else {
|
2677 |
if ((new_ss & 3) != rpl) |
2678 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2679 |
if (load_segment(&ss_e1, &ss_e2, new_ss) != 0) |
2680 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2681 |
if (!(ss_e2 & DESC_S_MASK) ||
|
2682 |
(ss_e2 & DESC_CS_MASK) || |
2683 |
!(ss_e2 & DESC_W_MASK)) |
2684 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2685 |
dpl = (ss_e2 >> DESC_DPL_SHIFT) & 3;
|
2686 |
if (dpl != rpl)
|
2687 |
raise_exception_err(EXCP0D_GPF, new_ss & 0xfffc);
|
2688 |
if (!(ss_e2 & DESC_P_MASK))
|
2689 |
raise_exception_err(EXCP0B_NOSEG, new_ss & 0xfffc);
|
2690 |
cpu_x86_load_seg_cache(env, R_SS, new_ss, |
2691 |
get_seg_base(ss_e1, ss_e2), |
2692 |
get_seg_limit(ss_e1, ss_e2), |
2693 |
ss_e2); |
2694 |
} |
2695 |
|
2696 |
cpu_x86_load_seg_cache(env, R_CS, new_cs, |
2697 |
get_seg_base(e1, e2), |
2698 |
get_seg_limit(e1, e2), |
2699 |
e2); |
2700 |
cpu_x86_set_cpl(env, rpl); |
2701 |
sp = new_esp; |
2702 |
#ifdef TARGET_X86_64
|
2703 |
if (env->hflags & HF_CS64_MASK)
|
2704 |
sp_mask = -1;
|
2705 |
else
|
2706 |
#endif
|
2707 |
sp_mask = get_sp_mask(ss_e2); |
2708 |
|
2709 |
/* validate data segments */
|
2710 |
validate_seg(R_ES, rpl); |
2711 |
validate_seg(R_DS, rpl); |
2712 |
validate_seg(R_FS, rpl); |
2713 |
validate_seg(R_GS, rpl); |
2714 |
|
2715 |
sp += addend; |
2716 |
} |
2717 |
SET_ESP(sp, sp_mask); |
2718 |
env->eip = new_eip; |
2719 |
if (is_iret) {
|
2720 |
/* NOTE: 'cpl' is the _old_ CPL */
|
2721 |
eflags_mask = TF_MASK | AC_MASK | ID_MASK | RF_MASK | NT_MASK; |
2722 |
if (cpl == 0) |
2723 |
eflags_mask |= IOPL_MASK; |
2724 |
iopl = (env->eflags >> IOPL_SHIFT) & 3;
|
2725 |
if (cpl <= iopl)
|
2726 |
eflags_mask |= IF_MASK; |
2727 |
if (shift == 0) |
2728 |
eflags_mask &= 0xffff;
|
2729 |
load_eflags(new_eflags, eflags_mask); |
2730 |
} |
2731 |
return;
|
2732 |
|
2733 |
return_to_vm86:
|
2734 |
POPL(ssp, sp, sp_mask, new_esp); |
2735 |
POPL(ssp, sp, sp_mask, new_ss); |
2736 |
POPL(ssp, sp, sp_mask, new_es); |
2737 |
POPL(ssp, sp, sp_mask, new_ds); |
2738 |
POPL(ssp, sp, sp_mask, new_fs); |
2739 |
POPL(ssp, sp, sp_mask, new_gs); |
2740 |
|
2741 |
/* modify processor state */
|
2742 |
load_eflags(new_eflags, TF_MASK | AC_MASK | ID_MASK | |
2743 |
IF_MASK | IOPL_MASK | VM_MASK | NT_MASK | VIF_MASK | VIP_MASK); |
2744 |
load_seg_vm(R_CS, new_cs & 0xffff);
|
2745 |
cpu_x86_set_cpl(env, 3);
|
2746 |
load_seg_vm(R_SS, new_ss & 0xffff);
|
2747 |
load_seg_vm(R_ES, new_es & 0xffff);
|
2748 |
load_seg_vm(R_DS, new_ds & 0xffff);
|
2749 |
load_seg_vm(R_FS, new_fs & 0xffff);
|
2750 |
load_seg_vm(R_GS, new_gs & 0xffff);
|
2751 |
|
2752 |
env->eip = new_eip & 0xffff;
|
2753 |
ESP = new_esp; |
2754 |
} |
2755 |
|
2756 |
void helper_iret_protected(int shift, int next_eip) |
2757 |
{ |
2758 |
int tss_selector, type;
|
2759 |
uint32_t e1, e2; |
2760 |
|
2761 |
/* specific case for TSS */
|
2762 |
if (env->eflags & NT_MASK) {
|
2763 |
#ifdef TARGET_X86_64
|
2764 |
if (env->hflags & HF_LMA_MASK)
|
2765 |
raise_exception_err(EXCP0D_GPF, 0);
|
2766 |
#endif
|
2767 |
tss_selector = lduw_kernel(env->tr.base + 0);
|
2768 |
if (tss_selector & 4) |
2769 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2770 |
if (load_segment(&e1, &e2, tss_selector) != 0) |
2771 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2772 |
type = (e2 >> DESC_TYPE_SHIFT) & 0x17;
|
2773 |
/* NOTE: we check both segment and busy TSS */
|
2774 |
if (type != 3) |
2775 |
raise_exception_err(EXCP0A_TSS, tss_selector & 0xfffc);
|
2776 |
switch_tss(tss_selector, e1, e2, SWITCH_TSS_IRET, next_eip); |
2777 |
} else {
|
2778 |
helper_ret_protected(shift, 1, 0); |
2779 |
} |
2780 |
env->hflags2 &= ~HF2_NMI_MASK; |
2781 |
} |
2782 |
|
2783 |
void helper_lret_protected(int shift, int addend) |
2784 |
{ |
2785 |
helper_ret_protected(shift, 0, addend);
|
2786 |
} |
2787 |
|
2788 |
void helper_sysenter(void) |
2789 |
{ |
2790 |
if (env->sysenter_cs == 0) { |
2791 |
raise_exception_err(EXCP0D_GPF, 0);
|
2792 |
} |
2793 |
env->eflags &= ~(VM_MASK | IF_MASK | RF_MASK); |
2794 |
cpu_x86_set_cpl(env, 0);
|
2795 |
|
2796 |
#ifdef TARGET_X86_64
|
2797 |
if (env->hflags & HF_LMA_MASK) {
|
2798 |
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
2799 |
0, 0xffffffff, |
2800 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2801 |
DESC_S_MASK | |
2802 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
2803 |
} else
|
2804 |
#endif
|
2805 |
{ |
2806 |
cpu_x86_load_seg_cache(env, R_CS, env->sysenter_cs & 0xfffc,
|
2807 |
0, 0xffffffff, |
2808 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2809 |
DESC_S_MASK | |
2810 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
2811 |
} |
2812 |
cpu_x86_load_seg_cache(env, R_SS, (env->sysenter_cs + 8) & 0xfffc, |
2813 |
0, 0xffffffff, |
2814 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2815 |
DESC_S_MASK | |
2816 |
DESC_W_MASK | DESC_A_MASK); |
2817 |
ESP = env->sysenter_esp; |
2818 |
EIP = env->sysenter_eip; |
2819 |
} |
2820 |
|
2821 |
void helper_sysexit(int dflag) |
2822 |
{ |
2823 |
int cpl;
|
2824 |
|
2825 |
cpl = env->hflags & HF_CPL_MASK; |
2826 |
if (env->sysenter_cs == 0 || cpl != 0) { |
2827 |
raise_exception_err(EXCP0D_GPF, 0);
|
2828 |
} |
2829 |
cpu_x86_set_cpl(env, 3);
|
2830 |
#ifdef TARGET_X86_64
|
2831 |
if (dflag == 2) { |
2832 |
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 32) & 0xfffc) | 3, |
2833 |
0, 0xffffffff, |
2834 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2835 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2836 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK | DESC_L_MASK); |
2837 |
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 40) & 0xfffc) | 3, |
2838 |
0, 0xffffffff, |
2839 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2840 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2841 |
DESC_W_MASK | DESC_A_MASK); |
2842 |
} else
|
2843 |
#endif
|
2844 |
{ |
2845 |
cpu_x86_load_seg_cache(env, R_CS, ((env->sysenter_cs + 16) & 0xfffc) | 3, |
2846 |
0, 0xffffffff, |
2847 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2848 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2849 |
DESC_CS_MASK | DESC_R_MASK | DESC_A_MASK); |
2850 |
cpu_x86_load_seg_cache(env, R_SS, ((env->sysenter_cs + 24) & 0xfffc) | 3, |
2851 |
0, 0xffffffff, |
2852 |
DESC_G_MASK | DESC_B_MASK | DESC_P_MASK | |
2853 |
DESC_S_MASK | (3 << DESC_DPL_SHIFT) |
|
2854 |
DESC_W_MASK | DESC_A_MASK); |
2855 |
} |
2856 |
ESP = ECX; |
2857 |
EIP = EDX; |
2858 |
} |
2859 |
|
2860 |
#if defined(CONFIG_USER_ONLY)
|
2861 |
target_ulong helper_read_crN(int reg)
|
2862 |
{ |
2863 |
return 0; |
2864 |
} |
2865 |
|
2866 |
void helper_write_crN(int reg, target_ulong t0) |
2867 |
{ |
2868 |
} |
2869 |
|
2870 |
void helper_movl_drN_T0(int reg, target_ulong t0) |
2871 |
{ |
2872 |
} |
2873 |
#else
|
2874 |
target_ulong helper_read_crN(int reg)
|
2875 |
{ |
2876 |
target_ulong val; |
2877 |
|
2878 |
helper_svm_check_intercept_param(SVM_EXIT_READ_CR0 + reg, 0);
|
2879 |
switch(reg) {
|
2880 |
default:
|
2881 |
val = env->cr[reg]; |
2882 |
break;
|
2883 |
case 8: |
2884 |
if (!(env->hflags2 & HF2_VINTR_MASK)) {
|
2885 |
val = cpu_get_apic_tpr(env); |
2886 |
} else {
|
2887 |
val = env->v_tpr; |
2888 |
} |
2889 |
break;
|
2890 |
} |
2891 |
return val;
|
2892 |
} |
2893 |
|
2894 |
void helper_write_crN(int reg, target_ulong t0) |
2895 |
{ |
2896 |
helper_svm_check_intercept_param(SVM_EXIT_WRITE_CR0 + reg, 0);
|
2897 |
switch(reg) {
|
2898 |
case 0: |
2899 |
cpu_x86_update_cr0(env, t0); |
2900 |
break;
|
2901 |
case 3: |
2902 |
cpu_x86_update_cr3(env, t0); |
2903 |
break;
|
2904 |
case 4: |
2905 |
cpu_x86_update_cr4(env, t0); |
2906 |
break;
|
2907 |
case 8: |
2908 |
if (!(env->hflags2 & HF2_VINTR_MASK)) {
|
2909 |
cpu_set_apic_tpr(env, t0); |
2910 |
} |
2911 |
env->v_tpr = t0 & 0x0f;
|
2912 |
break;
|
2913 |
default:
|
2914 |
env->cr[reg] = t0; |
2915 |
break;
|
2916 |
} |
2917 |
} |
2918 |
|
2919 |
void helper_movl_drN_T0(int reg, target_ulong t0) |
2920 |
{ |
2921 |
int i;
|
2922 |
|
2923 |
if (reg < 4) { |
2924 |
hw_breakpoint_remove(env, reg); |
2925 |
env->dr[reg] = t0; |
2926 |
hw_breakpoint_insert(env, reg); |
2927 |
} else if (reg == 7) { |
2928 |
for (i = 0; i < 4; i++) |
2929 |
hw_breakpoint_remove(env, i); |
2930 |
env->dr[7] = t0;
|
2931 |
for (i = 0; i < 4; i++) |
2932 |
hw_breakpoint_insert(env, i); |
2933 |
} else
|
2934 |
env->dr[reg] = t0; |
2935 |
} |
2936 |
#endif
|
2937 |
|
2938 |
void helper_lmsw(target_ulong t0)
|
2939 |
{ |
2940 |
/* only 4 lower bits of CR0 are modified. PE cannot be set to zero
|
2941 |
if already set to one. */
|
2942 |
t0 = (env->cr[0] & ~0xe) | (t0 & 0xf); |
2943 |
helper_write_crN(0, t0);
|
2944 |
} |
2945 |
|
2946 |
void helper_clts(void) |
2947 |
{ |
2948 |
env->cr[0] &= ~CR0_TS_MASK;
|
2949 |
env->hflags &= ~HF_TS_MASK; |
2950 |
} |
2951 |
|
2952 |
void helper_invlpg(target_ulong addr)
|
2953 |
{ |
2954 |
helper_svm_check_intercept_param(SVM_EXIT_INVLPG, 0);
|
2955 |
tlb_flush_page(env, addr); |
2956 |
} |
2957 |
|
2958 |
void helper_rdtsc(void) |
2959 |
{ |
2960 |
uint64_t val; |
2961 |
|
2962 |
if ((env->cr[4] & CR4_TSD_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
2963 |
raise_exception(EXCP0D_GPF); |
2964 |
} |
2965 |
helper_svm_check_intercept_param(SVM_EXIT_RDTSC, 0);
|
2966 |
|
2967 |
val = cpu_get_tsc(env) + env->tsc_offset; |
2968 |
EAX = (uint32_t)(val); |
2969 |
EDX = (uint32_t)(val >> 32);
|
2970 |
} |
2971 |
|
2972 |
void helper_rdtscp(void) |
2973 |
{ |
2974 |
helper_rdtsc(); |
2975 |
ECX = (uint32_t)(env->tsc_aux); |
2976 |
} |
2977 |
|
2978 |
void helper_rdpmc(void) |
2979 |
{ |
2980 |
if ((env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) { |
2981 |
raise_exception(EXCP0D_GPF); |
2982 |
} |
2983 |
helper_svm_check_intercept_param(SVM_EXIT_RDPMC, 0);
|
2984 |
|
2985 |
/* currently unimplemented */
|
2986 |
raise_exception_err(EXCP06_ILLOP, 0);
|
2987 |
} |
2988 |
|
2989 |
#if defined(CONFIG_USER_ONLY)
|
2990 |
void helper_wrmsr(void) |
2991 |
{ |
2992 |
} |
2993 |
|
2994 |
void helper_rdmsr(void) |
2995 |
{ |
2996 |
} |
2997 |
#else
|
2998 |
void helper_wrmsr(void) |
2999 |
{ |
3000 |
uint64_t val; |
3001 |
|
3002 |
helper_svm_check_intercept_param(SVM_EXIT_MSR, 1);
|
3003 |
|
3004 |
val = ((uint32_t)EAX) | ((uint64_t)((uint32_t)EDX) << 32);
|
3005 |
|
3006 |
switch((uint32_t)ECX) {
|
3007 |
case MSR_IA32_SYSENTER_CS:
|
3008 |
env->sysenter_cs = val & 0xffff;
|
3009 |
break;
|
3010 |
case MSR_IA32_SYSENTER_ESP:
|
3011 |
env->sysenter_esp = val; |
3012 |
break;
|
3013 |
case MSR_IA32_SYSENTER_EIP:
|
3014 |
env->sysenter_eip = val; |
3015 |
break;
|
3016 |
case MSR_IA32_APICBASE:
|
3017 |
cpu_set_apic_base(env, val); |
3018 |
break;
|
3019 |
case MSR_EFER:
|
3020 |
{ |
3021 |
uint64_t update_mask; |
3022 |
update_mask = 0;
|
3023 |
if (env->cpuid_ext2_features & CPUID_EXT2_SYSCALL)
|
3024 |
update_mask |= MSR_EFER_SCE; |
3025 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM)
|
3026 |
update_mask |= MSR_EFER_LME; |
3027 |
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
3028 |
update_mask |= MSR_EFER_FFXSR; |
3029 |
if (env->cpuid_ext2_features & CPUID_EXT2_NX)
|
3030 |
update_mask |= MSR_EFER_NXE; |
3031 |
if (env->cpuid_ext3_features & CPUID_EXT3_SVM)
|
3032 |
update_mask |= MSR_EFER_SVME; |
3033 |
if (env->cpuid_ext2_features & CPUID_EXT2_FFXSR)
|
3034 |
update_mask |= MSR_EFER_FFXSR; |
3035 |
cpu_load_efer(env, (env->efer & ~update_mask) | |
3036 |
(val & update_mask)); |
3037 |
} |
3038 |
break;
|
3039 |
case MSR_STAR:
|
3040 |
env->star = val; |
3041 |
break;
|
3042 |
case MSR_PAT:
|
3043 |
env->pat = val; |
3044 |
break;
|
3045 |
case MSR_VM_HSAVE_PA:
|
3046 |
env->vm_hsave = val; |
3047 |
break;
|
3048 |
#ifdef TARGET_X86_64
|
3049 |
case MSR_LSTAR:
|
3050 |
env->lstar = val; |
3051 |
break;
|
3052 |
case MSR_CSTAR:
|
3053 |
env->cstar = val; |
3054 |
break;
|
3055 |
case MSR_FMASK:
|
3056 |
env->fmask = val; |
3057 |
break;
|
3058 |
case MSR_FSBASE:
|
3059 |
env->segs[R_FS].base = val; |
3060 |
break;
|
3061 |
case MSR_GSBASE:
|
3062 |
env->segs[R_GS].base = val; |
3063 |
break;
|
3064 |
case MSR_KERNELGSBASE:
|
3065 |
env->kernelgsbase = val; |
3066 |
break;
|
3067 |
#endif
|
3068 |
case MSR_MTRRphysBase(0): |
3069 |
case MSR_MTRRphysBase(1): |
3070 |
case MSR_MTRRphysBase(2): |
3071 |
case MSR_MTRRphysBase(3): |
3072 |
case MSR_MTRRphysBase(4): |
3073 |
case MSR_MTRRphysBase(5): |
3074 |
case MSR_MTRRphysBase(6): |
3075 |
case MSR_MTRRphysBase(7): |
3076 |
env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base = val; |
3077 |
break;
|
3078 |
case MSR_MTRRphysMask(0): |
3079 |
case MSR_MTRRphysMask(1): |
3080 |
case MSR_MTRRphysMask(2): |
3081 |
case MSR_MTRRphysMask(3): |
3082 |
case MSR_MTRRphysMask(4): |
3083 |
case MSR_MTRRphysMask(5): |
3084 |
case MSR_MTRRphysMask(6): |
3085 |
case MSR_MTRRphysMask(7): |
3086 |
env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask = val; |
3087 |
break;
|
3088 |
case MSR_MTRRfix64K_00000:
|
3089 |
env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix64K_00000] = val; |
3090 |
break;
|
3091 |
case MSR_MTRRfix16K_80000:
|
3092 |
case MSR_MTRRfix16K_A0000:
|
3093 |
env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1] = val;
|
3094 |
break;
|
3095 |
case MSR_MTRRfix4K_C0000:
|
3096 |
case MSR_MTRRfix4K_C8000:
|
3097 |
case MSR_MTRRfix4K_D0000:
|
3098 |
case MSR_MTRRfix4K_D8000:
|
3099 |
case MSR_MTRRfix4K_E0000:
|
3100 |
case MSR_MTRRfix4K_E8000:
|
3101 |
case MSR_MTRRfix4K_F0000:
|
3102 |
case MSR_MTRRfix4K_F8000:
|
3103 |
env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3] = val;
|
3104 |
break;
|
3105 |
case MSR_MTRRdefType:
|
3106 |
env->mtrr_deftype = val; |
3107 |
break;
|
3108 |
case MSR_MCG_STATUS:
|
3109 |
env->mcg_status = val; |
3110 |
break;
|
3111 |
case MSR_MCG_CTL:
|
3112 |
if ((env->mcg_cap & MCG_CTL_P)
|
3113 |
&& (val == 0 || val == ~(uint64_t)0)) |
3114 |
env->mcg_ctl = val; |
3115 |
break;
|
3116 |
case MSR_TSC_AUX:
|
3117 |
env->tsc_aux = val; |
3118 |
break;
|
3119 |
default:
|
3120 |
if ((uint32_t)ECX >= MSR_MC0_CTL
|
3121 |
&& (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) { |
3122 |
uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL; |
3123 |
if ((offset & 0x3) != 0 |
3124 |
|| (val == 0 || val == ~(uint64_t)0)) |
3125 |
env->mce_banks[offset] = val; |
3126 |
break;
|
3127 |
} |
3128 |
/* XXX: exception ? */
|
3129 |
break;
|
3130 |
} |
3131 |
} |
3132 |
|
3133 |
void helper_rdmsr(void) |
3134 |
{ |
3135 |
uint64_t val; |
3136 |
|
3137 |
helper_svm_check_intercept_param(SVM_EXIT_MSR, 0);
|
3138 |
|
3139 |
switch((uint32_t)ECX) {
|
3140 |
case MSR_IA32_SYSENTER_CS:
|
3141 |
val = env->sysenter_cs; |
3142 |
break;
|
3143 |
case MSR_IA32_SYSENTER_ESP:
|
3144 |
val = env->sysenter_esp; |
3145 |
break;
|
3146 |
case MSR_IA32_SYSENTER_EIP:
|
3147 |
val = env->sysenter_eip; |
3148 |
break;
|
3149 |
case MSR_IA32_APICBASE:
|
3150 |
val = cpu_get_apic_base(env); |
3151 |
break;
|
3152 |
case MSR_EFER:
|
3153 |
val = env->efer; |
3154 |
break;
|
3155 |
case MSR_STAR:
|
3156 |
val = env->star; |
3157 |
break;
|
3158 |
case MSR_PAT:
|
3159 |
val = env->pat; |
3160 |
break;
|
3161 |
case MSR_VM_HSAVE_PA:
|
3162 |
val = env->vm_hsave; |
3163 |
break;
|
3164 |
case MSR_IA32_PERF_STATUS:
|
3165 |
/* tsc_increment_by_tick */
|
3166 |
val = 1000ULL;
|
3167 |
/* CPU multiplier */
|
3168 |
val |= (((uint64_t)4ULL) << 40); |
3169 |
break;
|
3170 |
#ifdef TARGET_X86_64
|
3171 |
case MSR_LSTAR:
|
3172 |
val = env->lstar; |
3173 |
break;
|
3174 |
case MSR_CSTAR:
|
3175 |
val = env->cstar; |
3176 |
break;
|
3177 |
case MSR_FMASK:
|
3178 |
val = env->fmask; |
3179 |
break;
|
3180 |
case MSR_FSBASE:
|
3181 |
val = env->segs[R_FS].base; |
3182 |
break;
|
3183 |
case MSR_GSBASE:
|
3184 |
val = env->segs[R_GS].base; |
3185 |
break;
|
3186 |
case MSR_KERNELGSBASE:
|
3187 |
val = env->kernelgsbase; |
3188 |
break;
|
3189 |
case MSR_TSC_AUX:
|
3190 |
val = env->tsc_aux; |
3191 |
break;
|
3192 |
#endif
|
3193 |
case MSR_MTRRphysBase(0): |
3194 |
case MSR_MTRRphysBase(1): |
3195 |
case MSR_MTRRphysBase(2): |
3196 |
case MSR_MTRRphysBase(3): |
3197 |
case MSR_MTRRphysBase(4): |
3198 |
case MSR_MTRRphysBase(5): |
3199 |
case MSR_MTRRphysBase(6): |
3200 |
case MSR_MTRRphysBase(7): |
3201 |
val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysBase(0)) / 2].base; |
3202 |
break;
|
3203 |
case MSR_MTRRphysMask(0): |
3204 |
case MSR_MTRRphysMask(1): |
3205 |
case MSR_MTRRphysMask(2): |
3206 |
case MSR_MTRRphysMask(3): |
3207 |
case MSR_MTRRphysMask(4): |
3208 |
case MSR_MTRRphysMask(5): |
3209 |
case MSR_MTRRphysMask(6): |
3210 |
case MSR_MTRRphysMask(7): |
3211 |
val = env->mtrr_var[((uint32_t)ECX - MSR_MTRRphysMask(0)) / 2].mask; |
3212 |
break;
|
3213 |
case MSR_MTRRfix64K_00000:
|
3214 |
val = env->mtrr_fixed[0];
|
3215 |
break;
|
3216 |
case MSR_MTRRfix16K_80000:
|
3217 |
case MSR_MTRRfix16K_A0000:
|
3218 |
val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix16K_80000 + 1];
|
3219 |
break;
|
3220 |
case MSR_MTRRfix4K_C0000:
|
3221 |
case MSR_MTRRfix4K_C8000:
|
3222 |
case MSR_MTRRfix4K_D0000:
|
3223 |
case MSR_MTRRfix4K_D8000:
|
3224 |
case MSR_MTRRfix4K_E0000:
|
3225 |
case MSR_MTRRfix4K_E8000:
|
3226 |
case MSR_MTRRfix4K_F0000:
|
3227 |
case MSR_MTRRfix4K_F8000:
|
3228 |
val = env->mtrr_fixed[(uint32_t)ECX - MSR_MTRRfix4K_C0000 + 3];
|
3229 |
break;
|
3230 |
case MSR_MTRRdefType:
|
3231 |
val = env->mtrr_deftype; |
3232 |
break;
|
3233 |
case MSR_MTRRcap:
|
3234 |
if (env->cpuid_features & CPUID_MTRR)
|
3235 |
val = MSR_MTRRcap_VCNT | MSR_MTRRcap_FIXRANGE_SUPPORT | MSR_MTRRcap_WC_SUPPORTED; |
3236 |
else
|
3237 |
/* XXX: exception ? */
|
3238 |
val = 0;
|
3239 |
break;
|
3240 |
case MSR_MCG_CAP:
|
3241 |
val = env->mcg_cap; |
3242 |
break;
|
3243 |
case MSR_MCG_CTL:
|
3244 |
if (env->mcg_cap & MCG_CTL_P)
|
3245 |
val = env->mcg_ctl; |
3246 |
else
|
3247 |
val = 0;
|
3248 |
break;
|
3249 |
case MSR_MCG_STATUS:
|
3250 |
val = env->mcg_status; |
3251 |
break;
|
3252 |
default:
|
3253 |
if ((uint32_t)ECX >= MSR_MC0_CTL
|
3254 |
&& (uint32_t)ECX < MSR_MC0_CTL + (4 * env->mcg_cap & 0xff)) { |
3255 |
uint32_t offset = (uint32_t)ECX - MSR_MC0_CTL; |
3256 |
val = env->mce_banks[offset]; |
3257 |
break;
|
3258 |
} |
3259 |
/* XXX: exception ? */
|
3260 |
val = 0;
|
3261 |
break;
|
3262 |
} |
3263 |
EAX = (uint32_t)(val); |
3264 |
EDX = (uint32_t)(val >> 32);
|
3265 |
} |
3266 |
#endif
|
3267 |
|
3268 |
target_ulong helper_lsl(target_ulong selector1) |
3269 |
{ |
3270 |
unsigned int limit; |
3271 |
uint32_t e1, e2, eflags, selector; |
3272 |
int rpl, dpl, cpl, type;
|
3273 |
|
3274 |
selector = selector1 & 0xffff;
|
3275 |
eflags = helper_cc_compute_all(CC_OP); |
3276 |
if ((selector & 0xfffc) == 0) |
3277 |
goto fail;
|
3278 |
if (load_segment(&e1, &e2, selector) != 0) |
3279 |
goto fail;
|
3280 |
rpl = selector & 3;
|
3281 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3282 |
cpl = env->hflags & HF_CPL_MASK; |
3283 |
if (e2 & DESC_S_MASK) {
|
3284 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
3285 |
/* conforming */
|
3286 |
} else {
|
3287 |
if (dpl < cpl || dpl < rpl)
|
3288 |
goto fail;
|
3289 |
} |
3290 |
} else {
|
3291 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
3292 |
switch(type) {
|
3293 |
case 1: |
3294 |
case 2: |
3295 |
case 3: |
3296 |
case 9: |
3297 |
case 11: |
3298 |
break;
|
3299 |
default:
|
3300 |
goto fail;
|
3301 |
} |
3302 |
if (dpl < cpl || dpl < rpl) {
|
3303 |
fail:
|
3304 |
CC_SRC = eflags & ~CC_Z; |
3305 |
return 0; |
3306 |
} |
3307 |
} |
3308 |
limit = get_seg_limit(e1, e2); |
3309 |
CC_SRC = eflags | CC_Z; |
3310 |
return limit;
|
3311 |
} |
3312 |
|
3313 |
target_ulong helper_lar(target_ulong selector1) |
3314 |
{ |
3315 |
uint32_t e1, e2, eflags, selector; |
3316 |
int rpl, dpl, cpl, type;
|
3317 |
|
3318 |
selector = selector1 & 0xffff;
|
3319 |
eflags = helper_cc_compute_all(CC_OP); |
3320 |
if ((selector & 0xfffc) == 0) |
3321 |
goto fail;
|
3322 |
if (load_segment(&e1, &e2, selector) != 0) |
3323 |
goto fail;
|
3324 |
rpl = selector & 3;
|
3325 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3326 |
cpl = env->hflags & HF_CPL_MASK; |
3327 |
if (e2 & DESC_S_MASK) {
|
3328 |
if ((e2 & DESC_CS_MASK) && (e2 & DESC_C_MASK)) {
|
3329 |
/* conforming */
|
3330 |
} else {
|
3331 |
if (dpl < cpl || dpl < rpl)
|
3332 |
goto fail;
|
3333 |
} |
3334 |
} else {
|
3335 |
type = (e2 >> DESC_TYPE_SHIFT) & 0xf;
|
3336 |
switch(type) {
|
3337 |
case 1: |
3338 |
case 2: |
3339 |
case 3: |
3340 |
case 4: |
3341 |
case 5: |
3342 |
case 9: |
3343 |
case 11: |
3344 |
case 12: |
3345 |
break;
|
3346 |
default:
|
3347 |
goto fail;
|
3348 |
} |
3349 |
if (dpl < cpl || dpl < rpl) {
|
3350 |
fail:
|
3351 |
CC_SRC = eflags & ~CC_Z; |
3352 |
return 0; |
3353 |
} |
3354 |
} |
3355 |
CC_SRC = eflags | CC_Z; |
3356 |
return e2 & 0x00f0ff00; |
3357 |
} |
3358 |
|
3359 |
void helper_verr(target_ulong selector1)
|
3360 |
{ |
3361 |
uint32_t e1, e2, eflags, selector; |
3362 |
int rpl, dpl, cpl;
|
3363 |
|
3364 |
selector = selector1 & 0xffff;
|
3365 |
eflags = helper_cc_compute_all(CC_OP); |
3366 |
if ((selector & 0xfffc) == 0) |
3367 |
goto fail;
|
3368 |
if (load_segment(&e1, &e2, selector) != 0) |
3369 |
goto fail;
|
3370 |
if (!(e2 & DESC_S_MASK))
|
3371 |
goto fail;
|
3372 |
rpl = selector & 3;
|
3373 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3374 |
cpl = env->hflags & HF_CPL_MASK; |
3375 |
if (e2 & DESC_CS_MASK) {
|
3376 |
if (!(e2 & DESC_R_MASK))
|
3377 |
goto fail;
|
3378 |
if (!(e2 & DESC_C_MASK)) {
|
3379 |
if (dpl < cpl || dpl < rpl)
|
3380 |
goto fail;
|
3381 |
} |
3382 |
} else {
|
3383 |
if (dpl < cpl || dpl < rpl) {
|
3384 |
fail:
|
3385 |
CC_SRC = eflags & ~CC_Z; |
3386 |
return;
|
3387 |
} |
3388 |
} |
3389 |
CC_SRC = eflags | CC_Z; |
3390 |
} |
3391 |
|
3392 |
void helper_verw(target_ulong selector1)
|
3393 |
{ |
3394 |
uint32_t e1, e2, eflags, selector; |
3395 |
int rpl, dpl, cpl;
|
3396 |
|
3397 |
selector = selector1 & 0xffff;
|
3398 |
eflags = helper_cc_compute_all(CC_OP); |
3399 |
if ((selector & 0xfffc) == 0) |
3400 |
goto fail;
|
3401 |
if (load_segment(&e1, &e2, selector) != 0) |
3402 |
goto fail;
|
3403 |
if (!(e2 & DESC_S_MASK))
|
3404 |
goto fail;
|
3405 |
rpl = selector & 3;
|
3406 |
dpl = (e2 >> DESC_DPL_SHIFT) & 3;
|
3407 |
cpl = env->hflags & HF_CPL_MASK; |
3408 |
if (e2 & DESC_CS_MASK) {
|
3409 |
goto fail;
|
3410 |
} else {
|
3411 |
if (dpl < cpl || dpl < rpl)
|
3412 |
goto fail;
|
3413 |
if (!(e2 & DESC_W_MASK)) {
|
3414 |
fail:
|
3415 |
CC_SRC = eflags & ~CC_Z; |
3416 |
return;
|
3417 |
} |
3418 |
} |
3419 |
CC_SRC = eflags | CC_Z; |
3420 |
} |
3421 |
|
3422 |
/* x87 FPU helpers */
|
3423 |
|
3424 |
static void fpu_set_exception(int mask) |
3425 |
{ |
3426 |
env->fpus |= mask; |
3427 |
if (env->fpus & (~env->fpuc & FPUC_EM))
|
3428 |
env->fpus |= FPUS_SE | FPUS_B; |
3429 |
} |
3430 |
|
3431 |
static inline CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b) |
3432 |
{ |
3433 |
if (b == 0.0) |
3434 |
fpu_set_exception(FPUS_ZE); |
3435 |
return a / b;
|
3436 |
} |
3437 |
|
3438 |
static void fpu_raise_exception(void) |
3439 |
{ |
3440 |
if (env->cr[0] & CR0_NE_MASK) { |
3441 |
raise_exception(EXCP10_COPR); |
3442 |
} |
3443 |
#if !defined(CONFIG_USER_ONLY)
|
3444 |
else {
|
3445 |
cpu_set_ferr(env); |
3446 |
} |
3447 |
#endif
|
3448 |
} |
3449 |
|
3450 |
void helper_flds_FT0(uint32_t val)
|
3451 |
{ |
3452 |
union {
|
3453 |
float32 f; |
3454 |
uint32_t i; |
3455 |
} u; |
3456 |
u.i = val; |
3457 |
FT0 = float32_to_floatx(u.f, &env->fp_status); |
3458 |
} |
3459 |
|
3460 |
void helper_fldl_FT0(uint64_t val)
|
3461 |
{ |
3462 |
union {
|
3463 |
float64 f; |
3464 |
uint64_t i; |
3465 |
} u; |
3466 |
u.i = val; |
3467 |
FT0 = float64_to_floatx(u.f, &env->fp_status); |
3468 |
} |
3469 |
|
3470 |
void helper_fildl_FT0(int32_t val)
|
3471 |
{ |
3472 |
FT0 = int32_to_floatx(val, &env->fp_status); |
3473 |
} |
3474 |
|
3475 |
void helper_flds_ST0(uint32_t val)
|
3476 |
{ |
3477 |
int new_fpstt;
|
3478 |
union {
|
3479 |
float32 f; |
3480 |
uint32_t i; |
3481 |
} u; |
3482 |
new_fpstt = (env->fpstt - 1) & 7; |
3483 |
u.i = val; |
3484 |
env->fpregs[new_fpstt].d = float32_to_floatx(u.f, &env->fp_status); |
3485 |
env->fpstt = new_fpstt; |
3486 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3487 |
} |
3488 |
|
3489 |
void helper_fldl_ST0(uint64_t val)
|
3490 |
{ |
3491 |
int new_fpstt;
|
3492 |
union {
|
3493 |
float64 f; |
3494 |
uint64_t i; |
3495 |
} u; |
3496 |
new_fpstt = (env->fpstt - 1) & 7; |
3497 |
u.i = val; |
3498 |
env->fpregs[new_fpstt].d = float64_to_floatx(u.f, &env->fp_status); |
3499 |
env->fpstt = new_fpstt; |
3500 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3501 |
} |
3502 |
|
3503 |
void helper_fildl_ST0(int32_t val)
|
3504 |
{ |
3505 |
int new_fpstt;
|
3506 |
new_fpstt = (env->fpstt - 1) & 7; |
3507 |
env->fpregs[new_fpstt].d = int32_to_floatx(val, &env->fp_status); |
3508 |
env->fpstt = new_fpstt; |
3509 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3510 |
} |
3511 |
|
3512 |
void helper_fildll_ST0(int64_t val)
|
3513 |
{ |
3514 |
int new_fpstt;
|
3515 |
new_fpstt = (env->fpstt - 1) & 7; |
3516 |
env->fpregs[new_fpstt].d = int64_to_floatx(val, &env->fp_status); |
3517 |
env->fpstt = new_fpstt; |
3518 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3519 |
} |
3520 |
|
3521 |
uint32_t helper_fsts_ST0(void)
|
3522 |
{ |
3523 |
union {
|
3524 |
float32 f; |
3525 |
uint32_t i; |
3526 |
} u; |
3527 |
u.f = floatx_to_float32(ST0, &env->fp_status); |
3528 |
return u.i;
|
3529 |
} |
3530 |
|
3531 |
uint64_t helper_fstl_ST0(void)
|
3532 |
{ |
3533 |
union {
|
3534 |
float64 f; |
3535 |
uint64_t i; |
3536 |
} u; |
3537 |
u.f = floatx_to_float64(ST0, &env->fp_status); |
3538 |
return u.i;
|
3539 |
} |
3540 |
|
3541 |
int32_t helper_fist_ST0(void)
|
3542 |
{ |
3543 |
int32_t val; |
3544 |
val = floatx_to_int32(ST0, &env->fp_status); |
3545 |
if (val != (int16_t)val)
|
3546 |
val = -32768;
|
3547 |
return val;
|
3548 |
} |
3549 |
|
3550 |
int32_t helper_fistl_ST0(void)
|
3551 |
{ |
3552 |
int32_t val; |
3553 |
val = floatx_to_int32(ST0, &env->fp_status); |
3554 |
return val;
|
3555 |
} |
3556 |
|
3557 |
int64_t helper_fistll_ST0(void)
|
3558 |
{ |
3559 |
int64_t val; |
3560 |
val = floatx_to_int64(ST0, &env->fp_status); |
3561 |
return val;
|
3562 |
} |
3563 |
|
3564 |
int32_t helper_fistt_ST0(void)
|
3565 |
{ |
3566 |
int32_t val; |
3567 |
val = floatx_to_int32_round_to_zero(ST0, &env->fp_status); |
3568 |
if (val != (int16_t)val)
|
3569 |
val = -32768;
|
3570 |
return val;
|
3571 |
} |
3572 |
|
3573 |
int32_t helper_fisttl_ST0(void)
|
3574 |
{ |
3575 |
int32_t val; |
3576 |
val = floatx_to_int32_round_to_zero(ST0, &env->fp_status); |
3577 |
return val;
|
3578 |
} |
3579 |
|
3580 |
int64_t helper_fisttll_ST0(void)
|
3581 |
{ |
3582 |
int64_t val; |
3583 |
val = floatx_to_int64_round_to_zero(ST0, &env->fp_status); |
3584 |
return val;
|
3585 |
} |
3586 |
|
3587 |
void helper_fldt_ST0(target_ulong ptr)
|
3588 |
{ |
3589 |
int new_fpstt;
|
3590 |
new_fpstt = (env->fpstt - 1) & 7; |
3591 |
env->fpregs[new_fpstt].d = helper_fldt(ptr); |
3592 |
env->fpstt = new_fpstt; |
3593 |
env->fptags[new_fpstt] = 0; /* validate stack entry */ |
3594 |
} |
3595 |
|
3596 |
void helper_fstt_ST0(target_ulong ptr)
|
3597 |
{ |
3598 |
helper_fstt(ST0, ptr); |
3599 |
} |
3600 |
|
3601 |
void helper_fpush(void) |
3602 |
{ |
3603 |
fpush(); |
3604 |
} |
3605 |
|
3606 |
void helper_fpop(void) |
3607 |
{ |
3608 |
fpop(); |
3609 |
} |
3610 |
|
3611 |
void helper_fdecstp(void) |
3612 |
{ |
3613 |
env->fpstt = (env->fpstt - 1) & 7; |
3614 |
env->fpus &= (~0x4700);
|
3615 |
} |
3616 |
|
3617 |
void helper_fincstp(void) |
3618 |
{ |
3619 |
env->fpstt = (env->fpstt + 1) & 7; |
3620 |
env->fpus &= (~0x4700);
|
3621 |
} |
3622 |
|
3623 |
/* FPU move */
|
3624 |
|
3625 |
void helper_ffree_STN(int st_index) |
3626 |
{ |
3627 |
env->fptags[(env->fpstt + st_index) & 7] = 1; |
3628 |
} |
3629 |
|
3630 |
void helper_fmov_ST0_FT0(void) |
3631 |
{ |
3632 |
ST0 = FT0; |
3633 |
} |
3634 |
|
3635 |
void helper_fmov_FT0_STN(int st_index) |
3636 |
{ |
3637 |
FT0 = ST(st_index); |
3638 |
} |
3639 |
|
3640 |
void helper_fmov_ST0_STN(int st_index) |
3641 |
{ |
3642 |
ST0 = ST(st_index); |
3643 |
} |
3644 |
|
3645 |
void helper_fmov_STN_ST0(int st_index) |
3646 |
{ |
3647 |
ST(st_index) = ST0; |
3648 |
} |
3649 |
|
3650 |
void helper_fxchg_ST0_STN(int st_index) |
3651 |
{ |
3652 |
CPU86_LDouble tmp; |
3653 |
tmp = ST(st_index); |
3654 |
ST(st_index) = ST0; |
3655 |
ST0 = tmp; |
3656 |
} |
3657 |
|
3658 |
/* FPU operations */
|
3659 |
|
3660 |
static const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500}; |
3661 |
|
3662 |
void helper_fcom_ST0_FT0(void) |
3663 |
{ |
3664 |
int ret;
|
3665 |
|
3666 |
ret = floatx_compare(ST0, FT0, &env->fp_status); |
3667 |
env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1]; |
3668 |
} |
3669 |
|
3670 |
void helper_fucom_ST0_FT0(void) |
3671 |
{ |
3672 |
int ret;
|
3673 |
|
3674 |
ret = floatx_compare_quiet(ST0, FT0, &env->fp_status); |
3675 |
env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret+ 1]; |
3676 |
} |
3677 |
|
3678 |
static const int fcomi_ccval[4] = {CC_C, CC_Z, 0, CC_Z | CC_P | CC_C}; |
3679 |
|
3680 |
void helper_fcomi_ST0_FT0(void) |
3681 |
{ |
3682 |
int eflags;
|
3683 |
int ret;
|
3684 |
|
3685 |
ret = floatx_compare(ST0, FT0, &env->fp_status); |
3686 |
eflags = helper_cc_compute_all(CC_OP); |
3687 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
|
3688 |
CC_SRC = eflags; |
3689 |
} |
3690 |
|
3691 |
void helper_fucomi_ST0_FT0(void) |
3692 |
{ |
3693 |
int eflags;
|
3694 |
int ret;
|
3695 |
|
3696 |
ret = floatx_compare_quiet(ST0, FT0, &env->fp_status); |
3697 |
eflags = helper_cc_compute_all(CC_OP); |
3698 |
eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1];
|
3699 |
CC_SRC = eflags; |
3700 |
} |
3701 |
|
3702 |
void helper_fadd_ST0_FT0(void) |
3703 |
{ |
3704 |
ST0 += FT0; |
3705 |
} |
3706 |
|
3707 |
void helper_fmul_ST0_FT0(void) |
3708 |
{ |
3709 |
ST0 *= FT0; |
3710 |
} |
3711 |
|
3712 |
void helper_fsub_ST0_FT0(void) |
3713 |
{ |
3714 |
ST0 -= FT0; |
3715 |
} |
3716 |
|
3717 |
void helper_fsubr_ST0_FT0(void) |
3718 |
{ |
3719 |
ST0 = FT0 - ST0; |
3720 |
} |
3721 |
|
3722 |
void helper_fdiv_ST0_FT0(void) |
3723 |
{ |
3724 |
ST0 = helper_fdiv(ST0, FT0); |
3725 |
} |
3726 |
|
3727 |
void helper_fdivr_ST0_FT0(void) |
3728 |
{ |
3729 |
ST0 = helper_fdiv(FT0, ST0); |
3730 |
} |
3731 |
|
3732 |
/* fp operations between STN and ST0 */
|
3733 |
|
3734 |
void helper_fadd_STN_ST0(int st_index) |
3735 |
{ |
3736 |
ST(st_index) += ST0; |
3737 |
} |
3738 |
|
3739 |
void helper_fmul_STN_ST0(int st_index) |
3740 |
{ |
3741 |
ST(st_index) *= ST0; |
3742 |
} |
3743 |
|
3744 |
void helper_fsub_STN_ST0(int st_index) |
3745 |
{ |
3746 |
ST(st_index) -= ST0; |
3747 |
} |
3748 |
|
3749 |
void helper_fsubr_STN_ST0(int st_index) |
3750 |
{ |
3751 |
CPU86_LDouble *p; |
3752 |
p = &ST(st_index); |
3753 |
*p = ST0 - *p; |
3754 |
} |
3755 |
|
3756 |
void helper_fdiv_STN_ST0(int st_index) |
3757 |
{ |
3758 |
CPU86_LDouble *p; |
3759 |
p = &ST(st_index); |
3760 |
*p = helper_fdiv(*p, ST0); |
3761 |
} |
3762 |
|
3763 |
void helper_fdivr_STN_ST0(int st_index) |
3764 |
{ |
3765 |
CPU86_LDouble *p; |
3766 |
p = &ST(st_index); |
3767 |
*p = helper_fdiv(ST0, *p); |
3768 |
} |
3769 |
|
3770 |
/* misc FPU operations */
|
3771 |
void helper_fchs_ST0(void) |
3772 |
{ |
3773 |
ST0 = floatx_chs(ST0); |
3774 |
} |
3775 |
|
3776 |
void helper_fabs_ST0(void) |
3777 |
{ |
3778 |
ST0 = floatx_abs(ST0); |
3779 |
} |
3780 |
|
3781 |
void helper_fld1_ST0(void) |
3782 |
{ |
3783 |
ST0 = f15rk[1];
|
3784 |
} |
3785 |
|
3786 |
void helper_fldl2t_ST0(void) |
3787 |
{ |
3788 |
ST0 = f15rk[6];
|
3789 |
} |
3790 |
|
3791 |
void helper_fldl2e_ST0(void) |
3792 |
{ |
3793 |
ST0 = f15rk[5];
|
3794 |
} |
3795 |
|
3796 |
void helper_fldpi_ST0(void) |
3797 |
{ |
3798 |
ST0 = f15rk[2];
|
3799 |
} |
3800 |
|
3801 |
void helper_fldlg2_ST0(void) |
3802 |
{ |
3803 |
ST0 = f15rk[3];
|
3804 |
} |
3805 |
|
3806 |
void helper_fldln2_ST0(void) |
3807 |
{ |
3808 |
ST0 = f15rk[4];
|
3809 |
} |
3810 |
|
3811 |
void helper_fldz_ST0(void) |
3812 |
{ |
3813 |
ST0 = f15rk[0];
|
3814 |
} |
3815 |
|
3816 |
void helper_fldz_FT0(void) |
3817 |
{ |
3818 |
FT0 = f15rk[0];
|
3819 |
} |
3820 |
|
3821 |
uint32_t helper_fnstsw(void)
|
3822 |
{ |
3823 |
return (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
3824 |
} |
3825 |
|
3826 |
uint32_t helper_fnstcw(void)
|
3827 |
{ |
3828 |
return env->fpuc;
|
3829 |
} |
3830 |
|
3831 |
static void update_fp_status(void) |
3832 |
{ |
3833 |
int rnd_type;
|
3834 |
|
3835 |
/* set rounding mode */
|
3836 |
switch(env->fpuc & RC_MASK) {
|
3837 |
default:
|
3838 |
case RC_NEAR:
|
3839 |
rnd_type = float_round_nearest_even; |
3840 |
break;
|
3841 |
case RC_DOWN:
|
3842 |
rnd_type = float_round_down; |
3843 |
break;
|
3844 |
case RC_UP:
|
3845 |
rnd_type = float_round_up; |
3846 |
break;
|
3847 |
case RC_CHOP:
|
3848 |
rnd_type = float_round_to_zero; |
3849 |
break;
|
3850 |
} |
3851 |
set_float_rounding_mode(rnd_type, &env->fp_status); |
3852 |
#ifdef FLOATX80
|
3853 |
switch((env->fpuc >> 8) & 3) { |
3854 |
case 0: |
3855 |
rnd_type = 32;
|
3856 |
break;
|
3857 |
case 2: |
3858 |
rnd_type = 64;
|
3859 |
break;
|
3860 |
case 3: |
3861 |
default:
|
3862 |
rnd_type = 80;
|
3863 |
break;
|
3864 |
} |
3865 |
set_floatx80_rounding_precision(rnd_type, &env->fp_status); |
3866 |
#endif
|
3867 |
} |
3868 |
|
3869 |
void helper_fldcw(uint32_t val)
|
3870 |
{ |
3871 |
env->fpuc = val; |
3872 |
update_fp_status(); |
3873 |
} |
3874 |
|
3875 |
void helper_fclex(void) |
3876 |
{ |
3877 |
env->fpus &= 0x7f00;
|
3878 |
} |
3879 |
|
3880 |
void helper_fwait(void) |
3881 |
{ |
3882 |
if (env->fpus & FPUS_SE)
|
3883 |
fpu_raise_exception(); |
3884 |
} |
3885 |
|
3886 |
void helper_fninit(void) |
3887 |
{ |
3888 |
env->fpus = 0;
|
3889 |
env->fpstt = 0;
|
3890 |
env->fpuc = 0x37f;
|
3891 |
env->fptags[0] = 1; |
3892 |
env->fptags[1] = 1; |
3893 |
env->fptags[2] = 1; |
3894 |
env->fptags[3] = 1; |
3895 |
env->fptags[4] = 1; |
3896 |
env->fptags[5] = 1; |
3897 |
env->fptags[6] = 1; |
3898 |
env->fptags[7] = 1; |
3899 |
} |
3900 |
|
3901 |
/* BCD ops */
|
3902 |
|
3903 |
void helper_fbld_ST0(target_ulong ptr)
|
3904 |
{ |
3905 |
CPU86_LDouble tmp; |
3906 |
uint64_t val; |
3907 |
unsigned int v; |
3908 |
int i;
|
3909 |
|
3910 |
val = 0;
|
3911 |
for(i = 8; i >= 0; i--) { |
3912 |
v = ldub(ptr + i); |
3913 |
val = (val * 100) + ((v >> 4) * 10) + (v & 0xf); |
3914 |
} |
3915 |
tmp = val; |
3916 |
if (ldub(ptr + 9) & 0x80) |
3917 |
tmp = -tmp; |
3918 |
fpush(); |
3919 |
ST0 = tmp; |
3920 |
} |
3921 |
|
3922 |
void helper_fbst_ST0(target_ulong ptr)
|
3923 |
{ |
3924 |
int v;
|
3925 |
target_ulong mem_ref, mem_end; |
3926 |
int64_t val; |
3927 |
|
3928 |
val = floatx_to_int64(ST0, &env->fp_status); |
3929 |
mem_ref = ptr; |
3930 |
mem_end = mem_ref + 9;
|
3931 |
if (val < 0) { |
3932 |
stb(mem_end, 0x80);
|
3933 |
val = -val; |
3934 |
} else {
|
3935 |
stb(mem_end, 0x00);
|
3936 |
} |
3937 |
while (mem_ref < mem_end) {
|
3938 |
if (val == 0) |
3939 |
break;
|
3940 |
v = val % 100;
|
3941 |
val = val / 100;
|
3942 |
v = ((v / 10) << 4) | (v % 10); |
3943 |
stb(mem_ref++, v); |
3944 |
} |
3945 |
while (mem_ref < mem_end) {
|
3946 |
stb(mem_ref++, 0);
|
3947 |
} |
3948 |
} |
3949 |
|
3950 |
void helper_f2xm1(void) |
3951 |
{ |
3952 |
ST0 = pow(2.0,ST0) - 1.0; |
3953 |
} |
3954 |
|
3955 |
void helper_fyl2x(void) |
3956 |
{ |
3957 |
CPU86_LDouble fptemp; |
3958 |
|
3959 |
fptemp = ST0; |
3960 |
if (fptemp>0.0){ |
3961 |
fptemp = log(fptemp)/log(2.0); /* log2(ST) */ |
3962 |
ST1 *= fptemp; |
3963 |
fpop(); |
3964 |
} else {
|
3965 |
env->fpus &= (~0x4700);
|
3966 |
env->fpus |= 0x400;
|
3967 |
} |
3968 |
} |
3969 |
|
3970 |
void helper_fptan(void) |
3971 |
{ |
3972 |
CPU86_LDouble fptemp; |
3973 |
|
3974 |
fptemp = ST0; |
3975 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
3976 |
env->fpus |= 0x400;
|
3977 |
} else {
|
3978 |
ST0 = tan(fptemp); |
3979 |
fpush(); |
3980 |
ST0 = 1.0; |
3981 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
3982 |
/* the above code is for |arg| < 2**52 only */
|
3983 |
} |
3984 |
} |
3985 |
|
3986 |
void helper_fpatan(void) |
3987 |
{ |
3988 |
CPU86_LDouble fptemp, fpsrcop; |
3989 |
|
3990 |
fpsrcop = ST1; |
3991 |
fptemp = ST0; |
3992 |
ST1 = atan2(fpsrcop,fptemp); |
3993 |
fpop(); |
3994 |
} |
3995 |
|
3996 |
void helper_fxtract(void) |
3997 |
{ |
3998 |
CPU86_LDoubleU temp; |
3999 |
unsigned int expdif; |
4000 |
|
4001 |
temp.d = ST0; |
4002 |
expdif = EXPD(temp) - EXPBIAS; |
4003 |
/*DP exponent bias*/
|
4004 |
ST0 = expdif; |
4005 |
fpush(); |
4006 |
BIASEXPONENT(temp); |
4007 |
ST0 = temp.d; |
4008 |
} |
4009 |
|
4010 |
void helper_fprem1(void) |
4011 |
{ |
4012 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
4013 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
4014 |
int expdif;
|
4015 |
signed long long int q; |
4016 |
|
4017 |
if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) { |
4018 |
ST0 = 0.0 / 0.0; /* NaN */ |
4019 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4020 |
return;
|
4021 |
} |
4022 |
|
4023 |
fpsrcop = ST0; |
4024 |
fptemp = ST1; |
4025 |
fpsrcop1.d = fpsrcop; |
4026 |
fptemp1.d = fptemp; |
4027 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
4028 |
|
4029 |
if (expdif < 0) { |
4030 |
/* optimisation? taken from the AMD docs */
|
4031 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4032 |
/* ST0 is unchanged */
|
4033 |
return;
|
4034 |
} |
4035 |
|
4036 |
if (expdif < 53) { |
4037 |
dblq = fpsrcop / fptemp; |
4038 |
/* round dblq towards nearest integer */
|
4039 |
dblq = rint(dblq); |
4040 |
ST0 = fpsrcop - fptemp * dblq; |
4041 |
|
4042 |
/* convert dblq to q by truncating towards zero */
|
4043 |
if (dblq < 0.0) |
4044 |
q = (signed long long int)(-dblq); |
4045 |
else
|
4046 |
q = (signed long long int)dblq; |
4047 |
|
4048 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4049 |
/* (C0,C3,C1) <-- (q2,q1,q0) */
|
4050 |
env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */ |
4051 |
env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */ |
4052 |
env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */ |
4053 |
} else {
|
4054 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
4055 |
fptemp = pow(2.0, expdif - 50); |
4056 |
fpsrcop = (ST0 / ST1) / fptemp; |
4057 |
/* fpsrcop = integer obtained by chopping */
|
4058 |
fpsrcop = (fpsrcop < 0.0) ? |
4059 |
-(floor(fabs(fpsrcop))) : floor(fpsrcop); |
4060 |
ST0 -= (ST1 * fpsrcop * fptemp); |
4061 |
} |
4062 |
} |
4063 |
|
4064 |
void helper_fprem(void) |
4065 |
{ |
4066 |
CPU86_LDouble dblq, fpsrcop, fptemp; |
4067 |
CPU86_LDoubleU fpsrcop1, fptemp1; |
4068 |
int expdif;
|
4069 |
signed long long int q; |
4070 |
|
4071 |
if (isinf(ST0) || isnan(ST0) || isnan(ST1) || (ST1 == 0.0)) { |
4072 |
ST0 = 0.0 / 0.0; /* NaN */ |
4073 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4074 |
return;
|
4075 |
} |
4076 |
|
4077 |
fpsrcop = (CPU86_LDouble)ST0; |
4078 |
fptemp = (CPU86_LDouble)ST1; |
4079 |
fpsrcop1.d = fpsrcop; |
4080 |
fptemp1.d = fptemp; |
4081 |
expdif = EXPD(fpsrcop1) - EXPD(fptemp1); |
4082 |
|
4083 |
if (expdif < 0) { |
4084 |
/* optimisation? taken from the AMD docs */
|
4085 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4086 |
/* ST0 is unchanged */
|
4087 |
return;
|
4088 |
} |
4089 |
|
4090 |
if ( expdif < 53 ) { |
4091 |
dblq = fpsrcop/*ST0*/ / fptemp/*ST1*/; |
4092 |
/* round dblq towards zero */
|
4093 |
dblq = (dblq < 0.0) ? ceil(dblq) : floor(dblq); |
4094 |
ST0 = fpsrcop/*ST0*/ - fptemp * dblq;
|
4095 |
|
4096 |
/* convert dblq to q by truncating towards zero */
|
4097 |
if (dblq < 0.0) |
4098 |
q = (signed long long int)(-dblq); |
4099 |
else
|
4100 |
q = (signed long long int)dblq; |
4101 |
|
4102 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4103 |
/* (C0,C3,C1) <-- (q2,q1,q0) */
|
4104 |
env->fpus |= (q & 0x4) << (8 - 2); /* (C0) <-- q2 */ |
4105 |
env->fpus |= (q & 0x2) << (14 - 1); /* (C3) <-- q1 */ |
4106 |
env->fpus |= (q & 0x1) << (9 - 0); /* (C1) <-- q0 */ |
4107 |
} else {
|
4108 |
int N = 32 + (expdif % 32); /* as per AMD docs */ |
4109 |
env->fpus |= 0x400; /* C2 <-- 1 */ |
4110 |
fptemp = pow(2.0, (double)(expdif - N)); |
4111 |
fpsrcop = (ST0 / ST1) / fptemp; |
4112 |
/* fpsrcop = integer obtained by chopping */
|
4113 |
fpsrcop = (fpsrcop < 0.0) ? |
4114 |
-(floor(fabs(fpsrcop))) : floor(fpsrcop); |
4115 |
ST0 -= (ST1 * fpsrcop * fptemp); |
4116 |
} |
4117 |
} |
4118 |
|
4119 |
void helper_fyl2xp1(void) |
4120 |
{ |
4121 |
CPU86_LDouble fptemp; |
4122 |
|
4123 |
fptemp = ST0; |
4124 |
if ((fptemp+1.0)>0.0) { |
4125 |
fptemp = log(fptemp+1.0) / log(2.0); /* log2(ST+1.0) */ |
4126 |
ST1 *= fptemp; |
4127 |
fpop(); |
4128 |
} else {
|
4129 |
env->fpus &= (~0x4700);
|
4130 |
env->fpus |= 0x400;
|
4131 |
} |
4132 |
} |
4133 |
|
4134 |
void helper_fsqrt(void) |
4135 |
{ |
4136 |
CPU86_LDouble fptemp; |
4137 |
|
4138 |
fptemp = ST0; |
4139 |
if (fptemp<0.0) { |
4140 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4141 |
env->fpus |= 0x400;
|
4142 |
} |
4143 |
ST0 = sqrt(fptemp); |
4144 |
} |
4145 |
|
4146 |
void helper_fsincos(void) |
4147 |
{ |
4148 |
CPU86_LDouble fptemp; |
4149 |
|
4150 |
fptemp = ST0; |
4151 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
4152 |
env->fpus |= 0x400;
|
4153 |
} else {
|
4154 |
ST0 = sin(fptemp); |
4155 |
fpush(); |
4156 |
ST0 = cos(fptemp); |
4157 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
4158 |
/* the above code is for |arg| < 2**63 only */
|
4159 |
} |
4160 |
} |
4161 |
|
4162 |
void helper_frndint(void) |
4163 |
{ |
4164 |
ST0 = floatx_round_to_int(ST0, &env->fp_status); |
4165 |
} |
4166 |
|
4167 |
void helper_fscale(void) |
4168 |
{ |
4169 |
ST0 = ldexp (ST0, (int)(ST1));
|
4170 |
} |
4171 |
|
4172 |
void helper_fsin(void) |
4173 |
{ |
4174 |
CPU86_LDouble fptemp; |
4175 |
|
4176 |
fptemp = ST0; |
4177 |
if ((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
4178 |
env->fpus |= 0x400;
|
4179 |
} else {
|
4180 |
ST0 = sin(fptemp); |
4181 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
4182 |
/* the above code is for |arg| < 2**53 only */
|
4183 |
} |
4184 |
} |
4185 |
|
4186 |
void helper_fcos(void) |
4187 |
{ |
4188 |
CPU86_LDouble fptemp; |
4189 |
|
4190 |
fptemp = ST0; |
4191 |
if((fptemp > MAXTAN)||(fptemp < -MAXTAN)) {
|
4192 |
env->fpus |= 0x400;
|
4193 |
} else {
|
4194 |
ST0 = cos(fptemp); |
4195 |
env->fpus &= (~0x400); /* C2 <-- 0 */ |
4196 |
/* the above code is for |arg5 < 2**63 only */
|
4197 |
} |
4198 |
} |
4199 |
|
4200 |
void helper_fxam_ST0(void) |
4201 |
{ |
4202 |
CPU86_LDoubleU temp; |
4203 |
int expdif;
|
4204 |
|
4205 |
temp.d = ST0; |
4206 |
|
4207 |
env->fpus &= (~0x4700); /* (C3,C2,C1,C0) <-- 0000 */ |
4208 |
if (SIGND(temp))
|
4209 |
env->fpus |= 0x200; /* C1 <-- 1 */ |
4210 |
|
4211 |
/* XXX: test fptags too */
|
4212 |
expdif = EXPD(temp); |
4213 |
if (expdif == MAXEXPD) {
|
4214 |
#ifdef USE_X86LDOUBLE
|
4215 |
if (MANTD(temp) == 0x8000000000000000ULL) |
4216 |
#else
|
4217 |
if (MANTD(temp) == 0) |
4218 |
#endif
|
4219 |
env->fpus |= 0x500 /*Infinity*/; |
4220 |
else
|
4221 |
env->fpus |= 0x100 /*NaN*/; |
4222 |
} else if (expdif == 0) { |
4223 |
if (MANTD(temp) == 0) |
4224 |
env->fpus |= 0x4000 /*Zero*/; |
4225 |
else
|
4226 |
env->fpus |= 0x4400 /*Denormal*/; |
4227 |
} else {
|
4228 |
env->fpus |= 0x400;
|
4229 |
} |
4230 |
} |
4231 |
|
4232 |
void helper_fstenv(target_ulong ptr, int data32) |
4233 |
{ |
4234 |
int fpus, fptag, exp, i;
|
4235 |
uint64_t mant; |
4236 |
CPU86_LDoubleU tmp; |
4237 |
|
4238 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
4239 |
fptag = 0;
|
4240 |
for (i=7; i>=0; i--) { |
4241 |
fptag <<= 2;
|
4242 |
if (env->fptags[i]) {
|
4243 |
fptag |= 3;
|
4244 |
} else {
|
4245 |
tmp.d = env->fpregs[i].d; |
4246 |
exp = EXPD(tmp); |
4247 |
mant = MANTD(tmp); |
4248 |
if (exp == 0 && mant == 0) { |
4249 |
/* zero */
|
4250 |
fptag |= 1;
|
4251 |
} else if (exp == 0 || exp == MAXEXPD |
4252 |
#ifdef USE_X86LDOUBLE
|
4253 |
|| (mant & (1LL << 63)) == 0 |
4254 |
#endif
|
4255 |
) { |
4256 |
/* NaNs, infinity, denormal */
|
4257 |
fptag |= 2;
|
4258 |
} |
4259 |
} |
4260 |
} |
4261 |
if (data32) {
|
4262 |
/* 32 bit */
|
4263 |
stl(ptr, env->fpuc); |
4264 |
stl(ptr + 4, fpus);
|
4265 |
stl(ptr + 8, fptag);
|
4266 |
stl(ptr + 12, 0); /* fpip */ |
4267 |
stl(ptr + 16, 0); /* fpcs */ |
4268 |
stl(ptr + 20, 0); /* fpoo */ |
4269 |
stl(ptr + 24, 0); /* fpos */ |
4270 |
} else {
|
4271 |
/* 16 bit */
|
4272 |
stw(ptr, env->fpuc); |
4273 |
stw(ptr + 2, fpus);
|
4274 |
stw(ptr + 4, fptag);
|
4275 |
stw(ptr + 6, 0); |
4276 |
stw(ptr + 8, 0); |
4277 |
stw(ptr + 10, 0); |
4278 |
stw(ptr + 12, 0); |
4279 |
} |
4280 |
} |
4281 |
|
4282 |
void helper_fldenv(target_ulong ptr, int data32) |
4283 |
{ |
4284 |
int i, fpus, fptag;
|
4285 |
|
4286 |
if (data32) {
|
4287 |
env->fpuc = lduw(ptr); |
4288 |
fpus = lduw(ptr + 4);
|
4289 |
fptag = lduw(ptr + 8);
|
4290 |
} |
4291 |
else {
|
4292 |
env->fpuc = lduw(ptr); |
4293 |
fpus = lduw(ptr + 2);
|
4294 |
fptag = lduw(ptr + 4);
|
4295 |
} |
4296 |
env->fpstt = (fpus >> 11) & 7; |
4297 |
env->fpus = fpus & ~0x3800;
|
4298 |
for(i = 0;i < 8; i++) { |
4299 |
env->fptags[i] = ((fptag & 3) == 3); |
4300 |
fptag >>= 2;
|
4301 |
} |
4302 |
} |
4303 |
|
4304 |
void helper_fsave(target_ulong ptr, int data32) |
4305 |
{ |
4306 |
CPU86_LDouble tmp; |
4307 |
int i;
|
4308 |
|
4309 |
helper_fstenv(ptr, data32); |
4310 |
|
4311 |
ptr += (14 << data32);
|
4312 |
for(i = 0;i < 8; i++) { |
4313 |
tmp = ST(i); |
4314 |
helper_fstt(tmp, ptr); |
4315 |
ptr += 10;
|
4316 |
} |
4317 |
|
4318 |
/* fninit */
|
4319 |
env->fpus = 0;
|
4320 |
env->fpstt = 0;
|
4321 |
env->fpuc = 0x37f;
|
4322 |
env->fptags[0] = 1; |
4323 |
env->fptags[1] = 1; |
4324 |
env->fptags[2] = 1; |
4325 |
env->fptags[3] = 1; |
4326 |
env->fptags[4] = 1; |
4327 |
env->fptags[5] = 1; |
4328 |
env->fptags[6] = 1; |
4329 |
env->fptags[7] = 1; |
4330 |
} |
4331 |
|
4332 |
void helper_frstor(target_ulong ptr, int data32) |
4333 |
{ |
4334 |
CPU86_LDouble tmp; |
4335 |
int i;
|
4336 |
|
4337 |
helper_fldenv(ptr, data32); |
4338 |
ptr += (14 << data32);
|
4339 |
|
4340 |
for(i = 0;i < 8; i++) { |
4341 |
tmp = helper_fldt(ptr); |
4342 |
ST(i) = tmp; |
4343 |
ptr += 10;
|
4344 |
} |
4345 |
} |
4346 |
|
4347 |
void helper_fxsave(target_ulong ptr, int data64) |
4348 |
{ |
4349 |
int fpus, fptag, i, nb_xmm_regs;
|
4350 |
CPU86_LDouble tmp; |
4351 |
target_ulong addr; |
4352 |
|
4353 |
/* The operand must be 16 byte aligned */
|
4354 |
if (ptr & 0xf) { |
4355 |
raise_exception(EXCP0D_GPF); |
4356 |
} |
4357 |
|
4358 |
fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
4359 |
fptag = 0;
|
4360 |
for(i = 0; i < 8; i++) { |
4361 |
fptag |= (env->fptags[i] << i); |
4362 |
} |
4363 |
stw(ptr, env->fpuc); |
4364 |
stw(ptr + 2, fpus);
|
4365 |
stw(ptr + 4, fptag ^ 0xff); |
4366 |
#ifdef TARGET_X86_64
|
4367 |
if (data64) {
|
4368 |
stq(ptr + 0x08, 0); /* rip */ |
4369 |
stq(ptr + 0x10, 0); /* rdp */ |
4370 |
} else
|
4371 |
#endif
|
4372 |
{ |
4373 |
stl(ptr + 0x08, 0); /* eip */ |
4374 |
stl(ptr + 0x0c, 0); /* sel */ |
4375 |
stl(ptr + 0x10, 0); /* dp */ |
4376 |
stl(ptr + 0x14, 0); /* sel */ |
4377 |
} |
4378 |
|
4379 |
addr = ptr + 0x20;
|
4380 |
for(i = 0;i < 8; i++) { |
4381 |
tmp = ST(i); |
4382 |
helper_fstt(tmp, addr); |
4383 |
addr += 16;
|
4384 |
} |
4385 |
|
4386 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
4387 |
/* XXX: finish it */
|
4388 |
stl(ptr + 0x18, env->mxcsr); /* mxcsr */ |
4389 |
stl(ptr + 0x1c, 0x0000ffff); /* mxcsr_mask */ |
4390 |
if (env->hflags & HF_CS64_MASK)
|
4391 |
nb_xmm_regs = 16;
|
4392 |
else
|
4393 |
nb_xmm_regs = 8;
|
4394 |
addr = ptr + 0xa0;
|
4395 |
/* Fast FXSAVE leaves out the XMM registers */
|
4396 |
if (!(env->efer & MSR_EFER_FFXSR)
|
4397 |
|| (env->hflags & HF_CPL_MASK) |
4398 |
|| !(env->hflags & HF_LMA_MASK)) { |
4399 |
for(i = 0; i < nb_xmm_regs; i++) { |
4400 |
stq(addr, env->xmm_regs[i].XMM_Q(0));
|
4401 |
stq(addr + 8, env->xmm_regs[i].XMM_Q(1)); |
4402 |
addr += 16;
|
4403 |
} |
4404 |
} |
4405 |
} |
4406 |
} |
4407 |
|
4408 |
void helper_fxrstor(target_ulong ptr, int data64) |
4409 |
{ |
4410 |
int i, fpus, fptag, nb_xmm_regs;
|
4411 |
CPU86_LDouble tmp; |
4412 |
target_ulong addr; |
4413 |
|
4414 |
/* The operand must be 16 byte aligned */
|
4415 |
if (ptr & 0xf) { |
4416 |
raise_exception(EXCP0D_GPF); |
4417 |
} |
4418 |
|
4419 |
env->fpuc = lduw(ptr); |
4420 |
fpus = lduw(ptr + 2);
|
4421 |
fptag = lduw(ptr + 4);
|
4422 |
env->fpstt = (fpus >> 11) & 7; |
4423 |
env->fpus = fpus & ~0x3800;
|
4424 |
fptag ^= 0xff;
|
4425 |
for(i = 0;i < 8; i++) { |
4426 |
env->fptags[i] = ((fptag >> i) & 1);
|
4427 |
} |
4428 |
|
4429 |
addr = ptr + 0x20;
|
4430 |
for(i = 0;i < 8; i++) { |
4431 |
tmp = helper_fldt(addr); |
4432 |
ST(i) = tmp; |
4433 |
addr += 16;
|
4434 |
} |
4435 |
|
4436 |
if (env->cr[4] & CR4_OSFXSR_MASK) { |
4437 |
/* XXX: finish it */
|
4438 |
env->mxcsr = ldl(ptr + 0x18);
|
4439 |
//ldl(ptr + 0x1c);
|
4440 |
if (env->hflags & HF_CS64_MASK)
|
4441 |
nb_xmm_regs = 16;
|
4442 |
else
|
4443 |
nb_xmm_regs = 8;
|
4444 |
addr = ptr + 0xa0;
|
4445 |
/* Fast FXRESTORE leaves out the XMM registers */
|
4446 |
if (!(env->efer & MSR_EFER_FFXSR)
|
4447 |
|| (env->hflags & HF_CPL_MASK) |
4448 |
|| !(env->hflags & HF_LMA_MASK)) { |
4449 |
for(i = 0; i < nb_xmm_regs; i++) { |
4450 |
env->xmm_regs[i].XMM_Q(0) = ldq(addr);
|
4451 |
env->xmm_regs[i].XMM_Q(1) = ldq(addr + 8); |
4452 |
addr += 16;
|
4453 |
} |
4454 |
} |
4455 |
} |
4456 |
} |
4457 |
|
4458 |
#ifndef USE_X86LDOUBLE
|
4459 |
|
4460 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
4461 |
{ |
4462 |
CPU86_LDoubleU temp; |
4463 |
int e;
|
4464 |
|
4465 |
temp.d = f; |
4466 |
/* mantissa */
|
4467 |
*pmant = (MANTD(temp) << 11) | (1LL << 63); |
4468 |
/* exponent + sign */
|
4469 |
e = EXPD(temp) - EXPBIAS + 16383;
|
4470 |
e |= SIGND(temp) >> 16;
|
4471 |
*pexp = e; |
4472 |
} |
4473 |
|
4474 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
4475 |
{ |
4476 |
CPU86_LDoubleU temp; |
4477 |
int e;
|
4478 |
uint64_t ll; |
4479 |
|
4480 |
/* XXX: handle overflow ? */
|
4481 |
e = (upper & 0x7fff) - 16383 + EXPBIAS; /* exponent */ |
4482 |
e |= (upper >> 4) & 0x800; /* sign */ |
4483 |
ll = (mant >> 11) & ((1LL << 52) - 1); |
4484 |
#ifdef __arm__
|
4485 |
temp.l.upper = (e << 20) | (ll >> 32); |
4486 |
temp.l.lower = ll; |
4487 |
#else
|
4488 |
temp.ll = ll | ((uint64_t)e << 52);
|
4489 |
#endif
|
4490 |
return temp.d;
|
4491 |
} |
4492 |
|
4493 |
#else
|
4494 |
|
4495 |
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f)
|
4496 |
{ |
4497 |
CPU86_LDoubleU temp; |
4498 |
|
4499 |
temp.d = f; |
4500 |
*pmant = temp.l.lower; |
4501 |
*pexp = temp.l.upper; |
4502 |
} |
4503 |
|
4504 |
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper) |
4505 |
{ |
4506 |
CPU86_LDoubleU temp; |
4507 |
|
4508 |
temp.l.upper = upper; |
4509 |
temp.l.lower = mant; |
4510 |
return temp.d;
|
4511 |
} |
4512 |
#endif
|
4513 |
|
4514 |
#ifdef TARGET_X86_64
|
4515 |
|
4516 |
//#define DEBUG_MULDIV
|
4517 |
|
4518 |
static void add128(uint64_t *plow, uint64_t *phigh, uint64_t a, uint64_t b) |
4519 |
{ |
4520 |
*plow += a; |
4521 |
/* carry test */
|
4522 |
if (*plow < a)
|
4523 |
(*phigh)++; |
4524 |
*phigh += b; |
4525 |
} |
4526 |
|
4527 |
static void neg128(uint64_t *plow, uint64_t *phigh) |
4528 |
{ |
4529 |
*plow = ~ *plow; |
4530 |
*phigh = ~ *phigh; |
4531 |
add128(plow, phigh, 1, 0); |
4532 |
} |
4533 |
|
4534 |
/* return TRUE if overflow */
|
4535 |
static int div64(uint64_t *plow, uint64_t *phigh, uint64_t b) |
4536 |
{ |
4537 |
uint64_t q, r, a1, a0; |
4538 |
int i, qb, ab;
|
4539 |
|
4540 |
a0 = *plow; |
4541 |
a1 = *phigh; |
4542 |
if (a1 == 0) { |
4543 |
q = a0 / b; |
4544 |
r = a0 % b; |
4545 |
*plow = q; |
4546 |
*phigh = r; |
4547 |
} else {
|
4548 |
if (a1 >= b)
|
4549 |
return 1; |
4550 |
/* XXX: use a better algorithm */
|
4551 |
for(i = 0; i < 64; i++) { |
4552 |
ab = a1 >> 63;
|
4553 |
a1 = (a1 << 1) | (a0 >> 63); |
4554 |
if (ab || a1 >= b) {
|
4555 |
a1 -= b; |
4556 |
qb = 1;
|
4557 |
} else {
|
4558 |
qb = 0;
|
4559 |
} |
4560 |
a0 = (a0 << 1) | qb;
|
4561 |
} |
4562 |
#if defined(DEBUG_MULDIV)
|
4563 |
printf("div: 0x%016" PRIx64 "%016" PRIx64 " / 0x%016" PRIx64 ": q=0x%016" PRIx64 " r=0x%016" PRIx64 "\n", |
4564 |
*phigh, *plow, b, a0, a1); |
4565 |
#endif
|
4566 |
*plow = a0; |
4567 |
*phigh = a1; |
4568 |
} |
4569 |
return 0; |
4570 |
} |
4571 |
|
4572 |
/* return TRUE if overflow */
|
4573 |
static int idiv64(uint64_t *plow, uint64_t *phigh, int64_t b) |
4574 |
{ |
4575 |
int sa, sb;
|
4576 |
sa = ((int64_t)*phigh < 0);
|
4577 |
if (sa)
|
4578 |
neg128(plow, phigh); |
4579 |
sb = (b < 0);
|
4580 |
if (sb)
|
4581 |
b = -b; |
4582 |
if (div64(plow, phigh, b) != 0) |
4583 |
return 1; |
4584 |
if (sa ^ sb) {
|
4585 |
if (*plow > (1ULL << 63)) |
4586 |
return 1; |
4587 |
*plow = - *plow; |
4588 |
} else {
|
4589 |
if (*plow >= (1ULL << 63)) |
4590 |
return 1; |
4591 |
} |
4592 |
if (sa)
|
4593 |
*phigh = - *phigh; |
4594 |
return 0; |
4595 |
} |
4596 |
|
4597 |
void helper_mulq_EAX_T0(target_ulong t0)
|
4598 |
{ |
4599 |
uint64_t r0, r1; |
4600 |
|
4601 |
mulu64(&r0, &r1, EAX, t0); |
4602 |
EAX = r0; |
4603 |
EDX = r1; |
4604 |
CC_DST = r0; |
4605 |
CC_SRC = r1; |
4606 |
} |
4607 |
|
4608 |
void helper_imulq_EAX_T0(target_ulong t0)
|
4609 |
{ |
4610 |
uint64_t r0, r1; |
4611 |
|
4612 |
muls64(&r0, &r1, EAX, t0); |
4613 |
EAX = r0; |
4614 |
EDX = r1; |
4615 |
CC_DST = r0; |
4616 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
4617 |
} |
4618 |
|
4619 |
target_ulong helper_imulq_T0_T1(target_ulong t0, target_ulong t1) |
4620 |
{ |
4621 |
uint64_t r0, r1; |
4622 |
|
4623 |
muls64(&r0, &r1, t0, t1); |
4624 |
CC_DST = r0; |
4625 |
CC_SRC = ((int64_t)r1 != ((int64_t)r0 >> 63));
|
4626 |
return r0;
|
4627 |
} |
4628 |
|
4629 |
void helper_divq_EAX(target_ulong t0)
|
4630 |
{ |
4631 |
uint64_t r0, r1; |
4632 |
if (t0 == 0) { |
4633 |
raise_exception(EXCP00_DIVZ); |
4634 |
} |
4635 |
r0 = EAX; |
4636 |
r1 = EDX; |
4637 |
if (div64(&r0, &r1, t0))
|
4638 |
raise_exception(EXCP00_DIVZ); |
4639 |
EAX = r0; |
4640 |
EDX = r1; |
4641 |
} |
4642 |
|
4643 |
void helper_idivq_EAX(target_ulong t0)
|
4644 |
{ |
4645 |
uint64_t r0, r1; |
4646 |
if (t0 == 0) { |
4647 |
raise_exception(EXCP00_DIVZ); |
4648 |
} |
4649 |
r0 = EAX; |
4650 |
r1 = EDX; |
4651 |
if (idiv64(&r0, &r1, t0))
|
4652 |
raise_exception(EXCP00_DIVZ); |
4653 |
EAX = r0; |
4654 |
EDX = r1; |
4655 |
} |
4656 |
#endif
|
4657 |
|
4658 |
static void do_hlt(void) |
4659 |
{ |
4660 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; /* needed if sti is just before */
|
4661 |
env->halted = 1;
|
4662 |
env->exception_index = EXCP_HLT; |
4663 |
cpu_loop_exit(); |
4664 |
} |
4665 |
|
4666 |
void helper_hlt(int next_eip_addend) |
4667 |
{ |
4668 |
helper_svm_check_intercept_param(SVM_EXIT_HLT, 0);
|
4669 |
EIP += next_eip_addend; |
4670 |
|
4671 |
do_hlt(); |
4672 |
} |
4673 |
|
4674 |
void helper_monitor(target_ulong ptr)
|
4675 |
{ |
4676 |
if ((uint32_t)ECX != 0) |
4677 |
raise_exception(EXCP0D_GPF); |
4678 |
/* XXX: store address ? */
|
4679 |
helper_svm_check_intercept_param(SVM_EXIT_MONITOR, 0);
|
4680 |
} |
4681 |
|
4682 |
void helper_mwait(int next_eip_addend) |
4683 |
{ |
4684 |
if ((uint32_t)ECX != 0) |
4685 |
raise_exception(EXCP0D_GPF); |
4686 |
helper_svm_check_intercept_param(SVM_EXIT_MWAIT, 0);
|
4687 |
EIP += next_eip_addend; |
4688 |
|
4689 |
/* XXX: not complete but not completely erroneous */
|
4690 |
if (env->cpu_index != 0 || env->next_cpu != NULL) { |
4691 |
/* more than one CPU: do not sleep because another CPU may
|
4692 |
wake this one */
|
4693 |
} else {
|
4694 |
do_hlt(); |
4695 |
} |
4696 |
} |
4697 |
|
4698 |
void helper_debug(void) |
4699 |
{ |
4700 |
env->exception_index = EXCP_DEBUG; |
4701 |
cpu_loop_exit(); |
4702 |
} |
4703 |
|
4704 |
void helper_reset_rf(void) |
4705 |
{ |
4706 |
env->eflags &= ~RF_MASK; |
4707 |
} |
4708 |
|
4709 |
void helper_raise_interrupt(int intno, int next_eip_addend) |
4710 |
{ |
4711 |
raise_interrupt(intno, 1, 0, next_eip_addend); |
4712 |
} |
4713 |
|
4714 |
void helper_raise_exception(int exception_index) |
4715 |
{ |
4716 |
raise_exception(exception_index); |
4717 |
} |
4718 |
|
4719 |
void helper_cli(void) |
4720 |
{ |
4721 |
env->eflags &= ~IF_MASK; |
4722 |
} |
4723 |
|
4724 |
void helper_sti(void) |
4725 |
{ |
4726 |
env->eflags |= IF_MASK; |
4727 |
} |
4728 |
|
4729 |
#if 0
|
4730 |
/* vm86plus instructions */
|
4731 |
void helper_cli_vm(void)
|
4732 |
{
|
4733 |
env->eflags &= ~VIF_MASK;
|
4734 |
}
|
4735 |
|
4736 |
void helper_sti_vm(void)
|
4737 |
{
|
4738 |
env->eflags |= VIF_MASK;
|
4739 |
if (env->eflags & VIP_MASK) {
|
4740 |
raise_exception(EXCP0D_GPF);
|
4741 |
}
|
4742 |
}
|
4743 |
#endif
|
4744 |
|
4745 |
void helper_set_inhibit_irq(void) |
4746 |
{ |
4747 |
env->hflags |= HF_INHIBIT_IRQ_MASK; |
4748 |
} |
4749 |
|
4750 |
void helper_reset_inhibit_irq(void) |
4751 |
{ |
4752 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
4753 |
} |
4754 |
|
4755 |
void helper_boundw(target_ulong a0, int v) |
4756 |
{ |
4757 |
int low, high;
|
4758 |
low = ldsw(a0); |
4759 |
high = ldsw(a0 + 2);
|
4760 |
v = (int16_t)v; |
4761 |
if (v < low || v > high) {
|
4762 |
raise_exception(EXCP05_BOUND); |
4763 |
} |
4764 |
} |
4765 |
|
4766 |
void helper_boundl(target_ulong a0, int v) |
4767 |
{ |
4768 |
int low, high;
|
4769 |
low = ldl(a0); |
4770 |
high = ldl(a0 + 4);
|
4771 |
if (v < low || v > high) {
|
4772 |
raise_exception(EXCP05_BOUND); |
4773 |
} |
4774 |
} |
4775 |
|
4776 |
static float approx_rsqrt(float a) |
4777 |
{ |
4778 |
return 1.0 / sqrt(a); |
4779 |
} |
4780 |
|
4781 |
static float approx_rcp(float a) |
4782 |
{ |
4783 |
return 1.0 / a; |
4784 |
} |
4785 |
|
4786 |
#if !defined(CONFIG_USER_ONLY)
|
4787 |
|
4788 |
#define MMUSUFFIX _mmu
|
4789 |
|
4790 |
#define SHIFT 0 |
4791 |
#include "softmmu_template.h" |
4792 |
|
4793 |
#define SHIFT 1 |
4794 |
#include "softmmu_template.h" |
4795 |
|
4796 |
#define SHIFT 2 |
4797 |
#include "softmmu_template.h" |
4798 |
|
4799 |
#define SHIFT 3 |
4800 |
#include "softmmu_template.h" |
4801 |
|
4802 |
#endif
|
4803 |
|
4804 |
#if !defined(CONFIG_USER_ONLY)
|
4805 |
/* try to fill the TLB and return an exception if error. If retaddr is
|
4806 |
NULL, it means that the function was called in C code (i.e. not
|
4807 |
from generated code or from helper.c) */
|
4808 |
/* XXX: fix it to restore all registers */
|
4809 |
void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr) |
4810 |
{ |
4811 |
TranslationBlock *tb; |
4812 |
int ret;
|
4813 |
unsigned long pc; |
4814 |
CPUX86State *saved_env; |
4815 |
|
4816 |
/* XXX: hack to restore env in all cases, even if not called from
|
4817 |
generated code */
|
4818 |
saved_env = env; |
4819 |
env = cpu_single_env; |
4820 |
|
4821 |
ret = cpu_x86_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
|
4822 |
if (ret) {
|
4823 |
if (retaddr) {
|
4824 |
/* now we have a real cpu fault */
|
4825 |
pc = (unsigned long)retaddr; |
4826 |
tb = tb_find_pc(pc); |
4827 |
if (tb) {
|
4828 |
/* the PC is inside the translated code. It means that we have
|
4829 |
a virtual CPU fault */
|
4830 |
cpu_restore_state(tb, env, pc, NULL);
|
4831 |
} |
4832 |
} |
4833 |
raise_exception_err(env->exception_index, env->error_code); |
4834 |
} |
4835 |
env = saved_env; |
4836 |
} |
4837 |
#endif
|
4838 |
|
4839 |
/* Secure Virtual Machine helpers */
|
4840 |
|
4841 |
#if defined(CONFIG_USER_ONLY)
|
4842 |
|
4843 |
void helper_vmrun(int aflag, int next_eip_addend) |
4844 |
{ |
4845 |
} |
4846 |
void helper_vmmcall(void) |
4847 |
{ |
4848 |
} |
4849 |
void helper_vmload(int aflag) |
4850 |
{ |
4851 |
} |
4852 |
void helper_vmsave(int aflag) |
4853 |
{ |
4854 |
} |
4855 |
void helper_stgi(void) |
4856 |
{ |
4857 |
} |
4858 |
void helper_clgi(void) |
4859 |
{ |
4860 |
} |
4861 |
void helper_skinit(void) |
4862 |
{ |
4863 |
} |
4864 |
void helper_invlpga(int aflag) |
4865 |
{ |
4866 |
} |
4867 |
void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
|
4868 |
{ |
4869 |
} |
4870 |
void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
|
4871 |
{ |
4872 |
} |
4873 |
|
4874 |
void helper_svm_check_io(uint32_t port, uint32_t param,
|
4875 |
uint32_t next_eip_addend) |
4876 |
{ |
4877 |
} |
4878 |
#else
|
4879 |
|
4880 |
static inline void svm_save_seg(target_phys_addr_t addr, |
4881 |
const SegmentCache *sc)
|
4882 |
{ |
4883 |
stw_phys(addr + offsetof(struct vmcb_seg, selector),
|
4884 |
sc->selector); |
4885 |
stq_phys(addr + offsetof(struct vmcb_seg, base),
|
4886 |
sc->base); |
4887 |
stl_phys(addr + offsetof(struct vmcb_seg, limit),
|
4888 |
sc->limit); |
4889 |
stw_phys(addr + offsetof(struct vmcb_seg, attrib),
|
4890 |
((sc->flags >> 8) & 0xff) | ((sc->flags >> 12) & 0x0f00)); |
4891 |
} |
4892 |
|
4893 |
static inline void svm_load_seg(target_phys_addr_t addr, SegmentCache *sc) |
4894 |
{ |
4895 |
unsigned int flags; |
4896 |
|
4897 |
sc->selector = lduw_phys(addr + offsetof(struct vmcb_seg, selector));
|
4898 |
sc->base = ldq_phys(addr + offsetof(struct vmcb_seg, base));
|
4899 |
sc->limit = ldl_phys(addr + offsetof(struct vmcb_seg, limit));
|
4900 |
flags = lduw_phys(addr + offsetof(struct vmcb_seg, attrib));
|
4901 |
sc->flags = ((flags & 0xff) << 8) | ((flags & 0x0f00) << 12); |
4902 |
} |
4903 |
|
4904 |
static inline void svm_load_seg_cache(target_phys_addr_t addr, |
4905 |
CPUState *env, int seg_reg)
|
4906 |
{ |
4907 |
SegmentCache sc1, *sc = &sc1; |
4908 |
svm_load_seg(addr, sc); |
4909 |
cpu_x86_load_seg_cache(env, seg_reg, sc->selector, |
4910 |
sc->base, sc->limit, sc->flags); |
4911 |
} |
4912 |
|
4913 |
void helper_vmrun(int aflag, int next_eip_addend) |
4914 |
{ |
4915 |
target_ulong addr; |
4916 |
uint32_t event_inj; |
4917 |
uint32_t int_ctl; |
4918 |
|
4919 |
helper_svm_check_intercept_param(SVM_EXIT_VMRUN, 0);
|
4920 |
|
4921 |
if (aflag == 2) |
4922 |
addr = EAX; |
4923 |
else
|
4924 |
addr = (uint32_t)EAX; |
4925 |
|
4926 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmrun! " TARGET_FMT_lx "\n", addr); |
4927 |
|
4928 |
env->vm_vmcb = addr; |
4929 |
|
4930 |
/* save the current CPU state in the hsave page */
|
4931 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
|
4932 |
stl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
|
4933 |
|
4934 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base), env->idt.base);
|
4935 |
stl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
|
4936 |
|
4937 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0), env->cr[0]); |
4938 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr2), env->cr[2]); |
4939 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3), env->cr[3]); |
4940 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4), env->cr[4]); |
4941 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6), env->dr[6]); |
4942 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7), env->dr[7]); |
4943 |
|
4944 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer), env->efer);
|
4945 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags), compute_eflags());
|
4946 |
|
4947 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.es),
|
4948 |
&env->segs[R_ES]); |
4949 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.cs),
|
4950 |
&env->segs[R_CS]); |
4951 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ss),
|
4952 |
&env->segs[R_SS]); |
4953 |
svm_save_seg(env->vm_hsave + offsetof(struct vmcb, save.ds),
|
4954 |
&env->segs[R_DS]); |
4955 |
|
4956 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip),
|
4957 |
EIP + next_eip_addend); |
4958 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp), ESP);
|
4959 |
stq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax), EAX);
|
4960 |
|
4961 |
/* load the interception bitmaps so we do not need to access the
|
4962 |
vmcb in svm mode */
|
4963 |
env->intercept = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept));
|
4964 |
env->intercept_cr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_read));
|
4965 |
env->intercept_cr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_cr_write));
|
4966 |
env->intercept_dr_read = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_read));
|
4967 |
env->intercept_dr_write = lduw_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_dr_write));
|
4968 |
env->intercept_exceptions = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.intercept_exceptions));
|
4969 |
|
4970 |
/* enable intercepts */
|
4971 |
env->hflags |= HF_SVMI_MASK; |
4972 |
|
4973 |
env->tsc_offset = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.tsc_offset));
|
4974 |
|
4975 |
env->gdt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base));
|
4976 |
env->gdt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit));
|
4977 |
|
4978 |
env->idt.base = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base));
|
4979 |
env->idt.limit = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit));
|
4980 |
|
4981 |
/* clear exit_info_2 so we behave like the real hardware */
|
4982 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), 0); |
4983 |
|
4984 |
cpu_x86_update_cr0(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0)));
|
4985 |
cpu_x86_update_cr4(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4)));
|
4986 |
cpu_x86_update_cr3(env, ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3)));
|
4987 |
env->cr[2] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2)); |
4988 |
int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
|
4989 |
env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK); |
4990 |
if (int_ctl & V_INTR_MASKING_MASK) {
|
4991 |
env->v_tpr = int_ctl & V_TPR_MASK; |
4992 |
env->hflags2 |= HF2_VINTR_MASK; |
4993 |
if (env->eflags & IF_MASK)
|
4994 |
env->hflags2 |= HF2_HIF_MASK; |
4995 |
} |
4996 |
|
4997 |
cpu_load_efer(env, |
4998 |
ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer)));
|
4999 |
env->eflags = 0;
|
5000 |
load_eflags(ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags)),
|
5001 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
5002 |
CC_OP = CC_OP_EFLAGS; |
5003 |
|
5004 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.es),
|
5005 |
env, R_ES); |
5006 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.cs),
|
5007 |
env, R_CS); |
5008 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ss),
|
5009 |
env, R_SS); |
5010 |
svm_load_seg_cache(env->vm_vmcb + offsetof(struct vmcb, save.ds),
|
5011 |
env, R_DS); |
5012 |
|
5013 |
EIP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip));
|
5014 |
env->eip = EIP; |
5015 |
ESP = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp));
|
5016 |
EAX = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax));
|
5017 |
env->dr[7] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7)); |
5018 |
env->dr[6] = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6)); |
5019 |
cpu_x86_set_cpl(env, ldub_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl)));
|
5020 |
|
5021 |
/* FIXME: guest state consistency checks */
|
5022 |
|
5023 |
switch(ldub_phys(env->vm_vmcb + offsetof(struct vmcb, control.tlb_ctl))) { |
5024 |
case TLB_CONTROL_DO_NOTHING:
|
5025 |
break;
|
5026 |
case TLB_CONTROL_FLUSH_ALL_ASID:
|
5027 |
/* FIXME: this is not 100% correct but should work for now */
|
5028 |
tlb_flush(env, 1);
|
5029 |
break;
|
5030 |
} |
5031 |
|
5032 |
env->hflags2 |= HF2_GIF_MASK; |
5033 |
|
5034 |
if (int_ctl & V_IRQ_MASK) {
|
5035 |
env->interrupt_request |= CPU_INTERRUPT_VIRQ; |
5036 |
} |
5037 |
|
5038 |
/* maybe we need to inject an event */
|
5039 |
event_inj = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj));
|
5040 |
if (event_inj & SVM_EVTINJ_VALID) {
|
5041 |
uint8_t vector = event_inj & SVM_EVTINJ_VEC_MASK; |
5042 |
uint16_t valid_err = event_inj & SVM_EVTINJ_VALID_ERR; |
5043 |
uint32_t event_inj_err = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err));
|
5044 |
|
5045 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "Injecting(%#hx): ", valid_err);
|
5046 |
/* FIXME: need to implement valid_err */
|
5047 |
switch (event_inj & SVM_EVTINJ_TYPE_MASK) {
|
5048 |
case SVM_EVTINJ_TYPE_INTR:
|
5049 |
env->exception_index = vector; |
5050 |
env->error_code = event_inj_err; |
5051 |
env->exception_is_int = 0;
|
5052 |
env->exception_next_eip = -1;
|
5053 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "INTR");
|
5054 |
/* XXX: is it always correct ? */
|
5055 |
do_interrupt(vector, 0, 0, 0, 1); |
5056 |
break;
|
5057 |
case SVM_EVTINJ_TYPE_NMI:
|
5058 |
env->exception_index = EXCP02_NMI; |
5059 |
env->error_code = event_inj_err; |
5060 |
env->exception_is_int = 0;
|
5061 |
env->exception_next_eip = EIP; |
5062 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "NMI");
|
5063 |
cpu_loop_exit(); |
5064 |
break;
|
5065 |
case SVM_EVTINJ_TYPE_EXEPT:
|
5066 |
env->exception_index = vector; |
5067 |
env->error_code = event_inj_err; |
5068 |
env->exception_is_int = 0;
|
5069 |
env->exception_next_eip = -1;
|
5070 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "EXEPT");
|
5071 |
cpu_loop_exit(); |
5072 |
break;
|
5073 |
case SVM_EVTINJ_TYPE_SOFT:
|
5074 |
env->exception_index = vector; |
5075 |
env->error_code = event_inj_err; |
5076 |
env->exception_is_int = 1;
|
5077 |
env->exception_next_eip = EIP; |
5078 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "SOFT");
|
5079 |
cpu_loop_exit(); |
5080 |
break;
|
5081 |
} |
5082 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, " %#x %#x\n", env->exception_index, env->error_code);
|
5083 |
} |
5084 |
} |
5085 |
|
5086 |
void helper_vmmcall(void) |
5087 |
{ |
5088 |
helper_svm_check_intercept_param(SVM_EXIT_VMMCALL, 0);
|
5089 |
raise_exception(EXCP06_ILLOP); |
5090 |
} |
5091 |
|
5092 |
void helper_vmload(int aflag) |
5093 |
{ |
5094 |
target_ulong addr; |
5095 |
helper_svm_check_intercept_param(SVM_EXIT_VMLOAD, 0);
|
5096 |
|
5097 |
if (aflag == 2) |
5098 |
addr = EAX; |
5099 |
else
|
5100 |
addr = (uint32_t)EAX; |
5101 |
|
5102 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmload! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n", |
5103 |
addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
|
5104 |
env->segs[R_FS].base); |
5105 |
|
5106 |
svm_load_seg_cache(addr + offsetof(struct vmcb, save.fs),
|
5107 |
env, R_FS); |
5108 |
svm_load_seg_cache(addr + offsetof(struct vmcb, save.gs),
|
5109 |
env, R_GS); |
5110 |
svm_load_seg(addr + offsetof(struct vmcb, save.tr),
|
5111 |
&env->tr); |
5112 |
svm_load_seg(addr + offsetof(struct vmcb, save.ldtr),
|
5113 |
&env->ldt); |
5114 |
|
5115 |
#ifdef TARGET_X86_64
|
5116 |
env->kernelgsbase = ldq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base));
|
5117 |
env->lstar = ldq_phys(addr + offsetof(struct vmcb, save.lstar));
|
5118 |
env->cstar = ldq_phys(addr + offsetof(struct vmcb, save.cstar));
|
5119 |
env->fmask = ldq_phys(addr + offsetof(struct vmcb, save.sfmask));
|
5120 |
#endif
|
5121 |
env->star = ldq_phys(addr + offsetof(struct vmcb, save.star));
|
5122 |
env->sysenter_cs = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_cs));
|
5123 |
env->sysenter_esp = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_esp));
|
5124 |
env->sysenter_eip = ldq_phys(addr + offsetof(struct vmcb, save.sysenter_eip));
|
5125 |
} |
5126 |
|
5127 |
void helper_vmsave(int aflag) |
5128 |
{ |
5129 |
target_ulong addr; |
5130 |
helper_svm_check_intercept_param(SVM_EXIT_VMSAVE, 0);
|
5131 |
|
5132 |
if (aflag == 2) |
5133 |
addr = EAX; |
5134 |
else
|
5135 |
addr = (uint32_t)EAX; |
5136 |
|
5137 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmsave! " TARGET_FMT_lx "\nFS: %016" PRIx64 " | " TARGET_FMT_lx "\n", |
5138 |
addr, ldq_phys(addr + offsetof(struct vmcb, save.fs.base)),
|
5139 |
env->segs[R_FS].base); |
5140 |
|
5141 |
svm_save_seg(addr + offsetof(struct vmcb, save.fs),
|
5142 |
&env->segs[R_FS]); |
5143 |
svm_save_seg(addr + offsetof(struct vmcb, save.gs),
|
5144 |
&env->segs[R_GS]); |
5145 |
svm_save_seg(addr + offsetof(struct vmcb, save.tr),
|
5146 |
&env->tr); |
5147 |
svm_save_seg(addr + offsetof(struct vmcb, save.ldtr),
|
5148 |
&env->ldt); |
5149 |
|
5150 |
#ifdef TARGET_X86_64
|
5151 |
stq_phys(addr + offsetof(struct vmcb, save.kernel_gs_base), env->kernelgsbase);
|
5152 |
stq_phys(addr + offsetof(struct vmcb, save.lstar), env->lstar);
|
5153 |
stq_phys(addr + offsetof(struct vmcb, save.cstar), env->cstar);
|
5154 |
stq_phys(addr + offsetof(struct vmcb, save.sfmask), env->fmask);
|
5155 |
#endif
|
5156 |
stq_phys(addr + offsetof(struct vmcb, save.star), env->star);
|
5157 |
stq_phys(addr + offsetof(struct vmcb, save.sysenter_cs), env->sysenter_cs);
|
5158 |
stq_phys(addr + offsetof(struct vmcb, save.sysenter_esp), env->sysenter_esp);
|
5159 |
stq_phys(addr + offsetof(struct vmcb, save.sysenter_eip), env->sysenter_eip);
|
5160 |
} |
5161 |
|
5162 |
void helper_stgi(void) |
5163 |
{ |
5164 |
helper_svm_check_intercept_param(SVM_EXIT_STGI, 0);
|
5165 |
env->hflags2 |= HF2_GIF_MASK; |
5166 |
} |
5167 |
|
5168 |
void helper_clgi(void) |
5169 |
{ |
5170 |
helper_svm_check_intercept_param(SVM_EXIT_CLGI, 0);
|
5171 |
env->hflags2 &= ~HF2_GIF_MASK; |
5172 |
} |
5173 |
|
5174 |
void helper_skinit(void) |
5175 |
{ |
5176 |
helper_svm_check_intercept_param(SVM_EXIT_SKINIT, 0);
|
5177 |
/* XXX: not implemented */
|
5178 |
raise_exception(EXCP06_ILLOP); |
5179 |
} |
5180 |
|
5181 |
void helper_invlpga(int aflag) |
5182 |
{ |
5183 |
target_ulong addr; |
5184 |
helper_svm_check_intercept_param(SVM_EXIT_INVLPGA, 0);
|
5185 |
|
5186 |
if (aflag == 2) |
5187 |
addr = EAX; |
5188 |
else
|
5189 |
addr = (uint32_t)EAX; |
5190 |
|
5191 |
/* XXX: could use the ASID to see if it is needed to do the
|
5192 |
flush */
|
5193 |
tlb_flush_page(env, addr); |
5194 |
} |
5195 |
|
5196 |
void helper_svm_check_intercept_param(uint32_t type, uint64_t param)
|
5197 |
{ |
5198 |
if (likely(!(env->hflags & HF_SVMI_MASK)))
|
5199 |
return;
|
5200 |
switch(type) {
|
5201 |
case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR0 + 8: |
5202 |
if (env->intercept_cr_read & (1 << (type - SVM_EXIT_READ_CR0))) { |
5203 |
helper_vmexit(type, param); |
5204 |
} |
5205 |
break;
|
5206 |
case SVM_EXIT_WRITE_CR0 ... SVM_EXIT_WRITE_CR0 + 8: |
5207 |
if (env->intercept_cr_write & (1 << (type - SVM_EXIT_WRITE_CR0))) { |
5208 |
helper_vmexit(type, param); |
5209 |
} |
5210 |
break;
|
5211 |
case SVM_EXIT_READ_DR0 ... SVM_EXIT_READ_DR0 + 7: |
5212 |
if (env->intercept_dr_read & (1 << (type - SVM_EXIT_READ_DR0))) { |
5213 |
helper_vmexit(type, param); |
5214 |
} |
5215 |
break;
|
5216 |
case SVM_EXIT_WRITE_DR0 ... SVM_EXIT_WRITE_DR0 + 7: |
5217 |
if (env->intercept_dr_write & (1 << (type - SVM_EXIT_WRITE_DR0))) { |
5218 |
helper_vmexit(type, param); |
5219 |
} |
5220 |
break;
|
5221 |
case SVM_EXIT_EXCP_BASE ... SVM_EXIT_EXCP_BASE + 31: |
5222 |
if (env->intercept_exceptions & (1 << (type - SVM_EXIT_EXCP_BASE))) { |
5223 |
helper_vmexit(type, param); |
5224 |
} |
5225 |
break;
|
5226 |
case SVM_EXIT_MSR:
|
5227 |
if (env->intercept & (1ULL << (SVM_EXIT_MSR - SVM_EXIT_INTR))) { |
5228 |
/* FIXME: this should be read in at vmrun (faster this way?) */
|
5229 |
uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.msrpm_base_pa));
|
5230 |
uint32_t t0, t1; |
5231 |
switch((uint32_t)ECX) {
|
5232 |
case 0 ... 0x1fff: |
5233 |
t0 = (ECX * 2) % 8; |
5234 |
t1 = ECX / 8;
|
5235 |
break;
|
5236 |
case 0xc0000000 ... 0xc0001fff: |
5237 |
t0 = (8192 + ECX - 0xc0000000) * 2; |
5238 |
t1 = (t0 / 8);
|
5239 |
t0 %= 8;
|
5240 |
break;
|
5241 |
case 0xc0010000 ... 0xc0011fff: |
5242 |
t0 = (16384 + ECX - 0xc0010000) * 2; |
5243 |
t1 = (t0 / 8);
|
5244 |
t0 %= 8;
|
5245 |
break;
|
5246 |
default:
|
5247 |
helper_vmexit(type, param); |
5248 |
t0 = 0;
|
5249 |
t1 = 0;
|
5250 |
break;
|
5251 |
} |
5252 |
if (ldub_phys(addr + t1) & ((1 << param) << t0)) |
5253 |
helper_vmexit(type, param); |
5254 |
} |
5255 |
break;
|
5256 |
default:
|
5257 |
if (env->intercept & (1ULL << (type - SVM_EXIT_INTR))) { |
5258 |
helper_vmexit(type, param); |
5259 |
} |
5260 |
break;
|
5261 |
} |
5262 |
} |
5263 |
|
5264 |
void helper_svm_check_io(uint32_t port, uint32_t param,
|
5265 |
uint32_t next_eip_addend) |
5266 |
{ |
5267 |
if (env->intercept & (1ULL << (SVM_EXIT_IOIO - SVM_EXIT_INTR))) { |
5268 |
/* FIXME: this should be read in at vmrun (faster this way?) */
|
5269 |
uint64_t addr = ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.iopm_base_pa));
|
5270 |
uint16_t mask = (1 << ((param >> 4) & 7)) - 1; |
5271 |
if(lduw_phys(addr + port / 8) & (mask << (port & 7))) { |
5272 |
/* next EIP */
|
5273 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
5274 |
env->eip + next_eip_addend); |
5275 |
helper_vmexit(SVM_EXIT_IOIO, param | (port << 16));
|
5276 |
} |
5277 |
} |
5278 |
} |
5279 |
|
5280 |
/* Note: currently only 32 bits of exit_code are used */
|
5281 |
void helper_vmexit(uint32_t exit_code, uint64_t exit_info_1)
|
5282 |
{ |
5283 |
uint32_t int_ctl; |
5284 |
|
5285 |
qemu_log_mask(CPU_LOG_TB_IN_ASM, "vmexit(%08x, %016" PRIx64 ", %016" PRIx64 ", " TARGET_FMT_lx ")!\n", |
5286 |
exit_code, exit_info_1, |
5287 |
ldq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2)),
|
5288 |
EIP); |
5289 |
|
5290 |
if(env->hflags & HF_INHIBIT_IRQ_MASK) {
|
5291 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), SVM_INTERRUPT_SHADOW_MASK);
|
5292 |
env->hflags &= ~HF_INHIBIT_IRQ_MASK; |
5293 |
} else {
|
5294 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_state), 0); |
5295 |
} |
5296 |
|
5297 |
/* Save the VM state in the vmcb */
|
5298 |
svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.es),
|
5299 |
&env->segs[R_ES]); |
5300 |
svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.cs),
|
5301 |
&env->segs[R_CS]); |
5302 |
svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.ss),
|
5303 |
&env->segs[R_SS]); |
5304 |
svm_save_seg(env->vm_vmcb + offsetof(struct vmcb, save.ds),
|
5305 |
&env->segs[R_DS]); |
5306 |
|
5307 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.base), env->gdt.base);
|
5308 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.gdtr.limit), env->gdt.limit);
|
5309 |
|
5310 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.base), env->idt.base);
|
5311 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, save.idtr.limit), env->idt.limit);
|
5312 |
|
5313 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.efer), env->efer);
|
5314 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr0), env->cr[0]); |
5315 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr2), env->cr[2]); |
5316 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr3), env->cr[3]); |
5317 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.cr4), env->cr[4]); |
5318 |
|
5319 |
int_ctl = ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl));
|
5320 |
int_ctl &= ~(V_TPR_MASK | V_IRQ_MASK); |
5321 |
int_ctl |= env->v_tpr & V_TPR_MASK; |
5322 |
if (env->interrupt_request & CPU_INTERRUPT_VIRQ)
|
5323 |
int_ctl |= V_IRQ_MASK; |
5324 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.int_ctl), int_ctl);
|
5325 |
|
5326 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rflags), compute_eflags());
|
5327 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rip), env->eip);
|
5328 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rsp), ESP);
|
5329 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.rax), EAX);
|
5330 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr7), env->dr[7]); |
5331 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, save.dr6), env->dr[6]); |
5332 |
stb_phys(env->vm_vmcb + offsetof(struct vmcb, save.cpl), env->hflags & HF_CPL_MASK);
|
5333 |
|
5334 |
/* Reload the host state from vm_hsave */
|
5335 |
env->hflags2 &= ~(HF2_HIF_MASK | HF2_VINTR_MASK); |
5336 |
env->hflags &= ~HF_SVMI_MASK; |
5337 |
env->intercept = 0;
|
5338 |
env->intercept_exceptions = 0;
|
5339 |
env->interrupt_request &= ~CPU_INTERRUPT_VIRQ; |
5340 |
env->tsc_offset = 0;
|
5341 |
|
5342 |
env->gdt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.base));
|
5343 |
env->gdt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.gdtr.limit));
|
5344 |
|
5345 |
env->idt.base = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.base));
|
5346 |
env->idt.limit = ldl_phys(env->vm_hsave + offsetof(struct vmcb, save.idtr.limit));
|
5347 |
|
5348 |
cpu_x86_update_cr0(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr0)) | CR0_PE_MASK);
|
5349 |
cpu_x86_update_cr4(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr4)));
|
5350 |
cpu_x86_update_cr3(env, ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.cr3)));
|
5351 |
/* we need to set the efer after the crs so the hidden flags get
|
5352 |
set properly */
|
5353 |
cpu_load_efer(env, |
5354 |
ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.efer)));
|
5355 |
env->eflags = 0;
|
5356 |
load_eflags(ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rflags)),
|
5357 |
~(CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C | DF_MASK)); |
5358 |
CC_OP = CC_OP_EFLAGS; |
5359 |
|
5360 |
svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.es),
|
5361 |
env, R_ES); |
5362 |
svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.cs),
|
5363 |
env, R_CS); |
5364 |
svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.ss),
|
5365 |
env, R_SS); |
5366 |
svm_load_seg_cache(env->vm_hsave + offsetof(struct vmcb, save.ds),
|
5367 |
env, R_DS); |
5368 |
|
5369 |
EIP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rip));
|
5370 |
ESP = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rsp));
|
5371 |
EAX = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.rax));
|
5372 |
|
5373 |
env->dr[6] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr6)); |
5374 |
env->dr[7] = ldq_phys(env->vm_hsave + offsetof(struct vmcb, save.dr7)); |
5375 |
|
5376 |
/* other setups */
|
5377 |
cpu_x86_set_cpl(env, 0);
|
5378 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_code), exit_code);
|
5379 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_1), exit_info_1);
|
5380 |
|
5381 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_int_info),
|
5382 |
ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj)));
|
5383 |
stl_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_int_info_err),
|
5384 |
ldl_phys(env->vm_vmcb + offsetof(struct vmcb, control.event_inj_err)));
|
5385 |
|
5386 |
env->hflags2 &= ~HF2_GIF_MASK; |
5387 |
/* FIXME: Resets the current ASID register to zero (host ASID). */
|
5388 |
|
5389 |
/* Clears the V_IRQ and V_INTR_MASKING bits inside the processor. */
|
5390 |
|
5391 |
/* Clears the TSC_OFFSET inside the processor. */
|
5392 |
|
5393 |
/* If the host is in PAE mode, the processor reloads the host's PDPEs
|
5394 |
from the page table indicated the host's CR3. If the PDPEs contain
|
5395 |
illegal state, the processor causes a shutdown. */
|
5396 |
|
5397 |
/* Forces CR0.PE = 1, RFLAGS.VM = 0. */
|
5398 |
env->cr[0] |= CR0_PE_MASK;
|
5399 |
env->eflags &= ~VM_MASK; |
5400 |
|
5401 |
/* Disables all breakpoints in the host DR7 register. */
|
5402 |
|
5403 |
/* Checks the reloaded host state for consistency. */
|
5404 |
|
5405 |
/* If the host's rIP reloaded by #VMEXIT is outside the limit of the
|
5406 |
host's code segment or non-canonical (in the case of long mode), a
|
5407 |
#GP fault is delivered inside the host.) */
|
5408 |
|
5409 |
/* remove any pending exception */
|
5410 |
env->exception_index = -1;
|
5411 |
env->error_code = 0;
|
5412 |
env->old_exception = -1;
|
5413 |
|
5414 |
cpu_loop_exit(); |
5415 |
} |
5416 |
|
5417 |
#endif
|
5418 |
|
5419 |
/* MMX/SSE */
|
5420 |
/* XXX: optimize by storing fptt and fptags in the static cpu state */
|
5421 |
void helper_enter_mmx(void) |
5422 |
{ |
5423 |
env->fpstt = 0;
|
5424 |
*(uint32_t *)(env->fptags) = 0;
|
5425 |
*(uint32_t *)(env->fptags + 4) = 0; |
5426 |
} |
5427 |
|
5428 |
void helper_emms(void) |
5429 |
{ |
5430 |
/* set to empty state */
|
5431 |
*(uint32_t *)(env->fptags) = 0x01010101;
|
5432 |
*(uint32_t *)(env->fptags + 4) = 0x01010101; |
5433 |
} |
5434 |
|
5435 |
/* XXX: suppress */
|
5436 |
void helper_movq(void *d, void *s) |
5437 |
{ |
5438 |
*(uint64_t *)d = *(uint64_t *)s; |
5439 |
} |
5440 |
|
5441 |
#define SHIFT 0 |
5442 |
#include "ops_sse.h" |
5443 |
|
5444 |
#define SHIFT 1 |
5445 |
#include "ops_sse.h" |
5446 |
|
5447 |
#define SHIFT 0 |
5448 |
#include "helper_template.h" |
5449 |
#undef SHIFT
|
5450 |
|
5451 |
#define SHIFT 1 |
5452 |
#include "helper_template.h" |
5453 |
#undef SHIFT
|
5454 |
|
5455 |
#define SHIFT 2 |
5456 |
#include "helper_template.h" |
5457 |
#undef SHIFT
|
5458 |
|
5459 |
#ifdef TARGET_X86_64
|
5460 |
|
5461 |
#define SHIFT 3 |
5462 |
#include "helper_template.h" |
5463 |
#undef SHIFT
|
5464 |
|
5465 |
#endif
|
5466 |
|
5467 |
/* bit operations */
|
5468 |
target_ulong helper_bsf(target_ulong t0) |
5469 |
{ |
5470 |
int count;
|
5471 |
target_ulong res; |
5472 |
|
5473 |
res = t0; |
5474 |
count = 0;
|
5475 |
while ((res & 1) == 0) { |
5476 |
count++; |
5477 |
res >>= 1;
|
5478 |
} |
5479 |
return count;
|
5480 |
} |
5481 |
|
5482 |
target_ulong helper_lzcnt(target_ulong t0, int wordsize)
|
5483 |
{ |
5484 |
int count;
|
5485 |
target_ulong res, mask; |
5486 |
|
5487 |
if (wordsize > 0 && t0 == 0) { |
5488 |
return wordsize;
|
5489 |
} |
5490 |
res = t0; |
5491 |
count = TARGET_LONG_BITS - 1;
|
5492 |
mask = (target_ulong)1 << (TARGET_LONG_BITS - 1); |
5493 |
while ((res & mask) == 0) { |
5494 |
count--; |
5495 |
res <<= 1;
|
5496 |
} |
5497 |
if (wordsize > 0) { |
5498 |
return wordsize - 1 - count; |
5499 |
} |
5500 |
return count;
|
5501 |
} |
5502 |
|
5503 |
target_ulong helper_bsr(target_ulong t0) |
5504 |
{ |
5505 |
return helper_lzcnt(t0, 0); |
5506 |
} |
5507 |
|
5508 |
static int compute_all_eflags(void) |
5509 |
{ |
5510 |
return CC_SRC;
|
5511 |
} |
5512 |
|
5513 |
static int compute_c_eflags(void) |
5514 |
{ |
5515 |
return CC_SRC & CC_C;
|
5516 |
} |
5517 |
|
5518 |
uint32_t helper_cc_compute_all(int op)
|
5519 |
{ |
5520 |
switch (op) {
|
5521 |
default: /* should never happen */ return 0; |
5522 |
|
5523 |
case CC_OP_EFLAGS: return compute_all_eflags(); |
5524 |
|
5525 |
case CC_OP_MULB: return compute_all_mulb(); |
5526 |
case CC_OP_MULW: return compute_all_mulw(); |
5527 |
case CC_OP_MULL: return compute_all_mull(); |
5528 |
|
5529 |
case CC_OP_ADDB: return compute_all_addb(); |
5530 |
case CC_OP_ADDW: return compute_all_addw(); |
5531 |
case CC_OP_ADDL: return compute_all_addl(); |
5532 |
|
5533 |
case CC_OP_ADCB: return compute_all_adcb(); |
5534 |
case CC_OP_ADCW: return compute_all_adcw(); |
5535 |
case CC_OP_ADCL: return compute_all_adcl(); |
5536 |
|
5537 |
case CC_OP_SUBB: return compute_all_subb(); |
5538 |
case CC_OP_SUBW: return compute_all_subw(); |
5539 |
case CC_OP_SUBL: return compute_all_subl(); |
5540 |
|
5541 |
case CC_OP_SBBB: return compute_all_sbbb(); |
5542 |
case CC_OP_SBBW: return compute_all_sbbw(); |
5543 |
case CC_OP_SBBL: return compute_all_sbbl(); |
5544 |
|
5545 |
case CC_OP_LOGICB: return compute_all_logicb(); |
5546 |
case CC_OP_LOGICW: return compute_all_logicw(); |
5547 |
case CC_OP_LOGICL: return compute_all_logicl(); |
5548 |
|
5549 |
case CC_OP_INCB: return compute_all_incb(); |
5550 |
case CC_OP_INCW: return compute_all_incw(); |
5551 |
case CC_OP_INCL: return compute_all_incl(); |
5552 |
|
5553 |
case CC_OP_DECB: return compute_all_decb(); |
5554 |
case CC_OP_DECW: return compute_all_decw(); |
5555 |
case CC_OP_DECL: return compute_all_decl(); |
5556 |
|
5557 |
case CC_OP_SHLB: return compute_all_shlb(); |
5558 |
case CC_OP_SHLW: return compute_all_shlw(); |
5559 |
case CC_OP_SHLL: return compute_all_shll(); |
5560 |
|
5561 |
case CC_OP_SARB: return compute_all_sarb(); |
5562 |
case CC_OP_SARW: return compute_all_sarw(); |
5563 |
case CC_OP_SARL: return compute_all_sarl(); |
5564 |
|
5565 |
#ifdef TARGET_X86_64
|
5566 |
case CC_OP_MULQ: return compute_all_mulq(); |
5567 |
|
5568 |
case CC_OP_ADDQ: return compute_all_addq(); |
5569 |
|
5570 |
case CC_OP_ADCQ: return compute_all_adcq(); |
5571 |
|
5572 |
case CC_OP_SUBQ: return compute_all_subq(); |
5573 |
|
5574 |
case CC_OP_SBBQ: return compute_all_sbbq(); |
5575 |
|
5576 |
case CC_OP_LOGICQ: return compute_all_logicq(); |
5577 |
|
5578 |
case CC_OP_INCQ: return compute_all_incq(); |
5579 |
|
5580 |
case CC_OP_DECQ: return compute_all_decq(); |
5581 |
|
5582 |
case CC_OP_SHLQ: return compute_all_shlq(); |
5583 |
|
5584 |
case CC_OP_SARQ: return compute_all_sarq(); |
5585 |
#endif
|
5586 |
} |
5587 |
} |
5588 |
|
5589 |
uint32_t helper_cc_compute_c(int op)
|
5590 |
{ |
5591 |
switch (op) {
|
5592 |
default: /* should never happen */ return 0; |
5593 |
|
5594 |
case CC_OP_EFLAGS: return compute_c_eflags(); |
5595 |
|
5596 |
case CC_OP_MULB: return compute_c_mull(); |
5597 |
case CC_OP_MULW: return compute_c_mull(); |
5598 |
case CC_OP_MULL: return compute_c_mull(); |
5599 |
|
5600 |
case CC_OP_ADDB: return compute_c_addb(); |
5601 |
case CC_OP_ADDW: return compute_c_addw(); |
5602 |
case CC_OP_ADDL: return compute_c_addl(); |
5603 |
|
5604 |
case CC_OP_ADCB: return compute_c_adcb(); |
5605 |
case CC_OP_ADCW: return compute_c_adcw(); |
5606 |
case CC_OP_ADCL: return compute_c_adcl(); |
5607 |
|
5608 |
case CC_OP_SUBB: return compute_c_subb(); |
5609 |
case CC_OP_SUBW: return compute_c_subw(); |
5610 |
case CC_OP_SUBL: return compute_c_subl(); |
5611 |
|
5612 |
case CC_OP_SBBB: return compute_c_sbbb(); |
5613 |
case CC_OP_SBBW: return compute_c_sbbw(); |
5614 |
case CC_OP_SBBL: return compute_c_sbbl(); |
5615 |
|
5616 |
case CC_OP_LOGICB: return compute_c_logicb(); |
5617 |
case CC_OP_LOGICW: return compute_c_logicw(); |
5618 |
case CC_OP_LOGICL: return compute_c_logicl(); |
5619 |
|
5620 |
case CC_OP_INCB: return compute_c_incl(); |
5621 |
case CC_OP_INCW: return compute_c_incl(); |
5622 |
case CC_OP_INCL: return compute_c_incl(); |
5623 |
|
5624 |
case CC_OP_DECB: return compute_c_incl(); |
5625 |
case CC_OP_DECW: return compute_c_incl(); |
5626 |
case CC_OP_DECL: return compute_c_incl(); |
5627 |
|
5628 |
case CC_OP_SHLB: return compute_c_shlb(); |
5629 |
case CC_OP_SHLW: return compute_c_shlw(); |
5630 |
case CC_OP_SHLL: return compute_c_shll(); |
5631 |
|
5632 |
case CC_OP_SARB: return compute_c_sarl(); |
5633 |
case CC_OP_SARW: return compute_c_sarl(); |
5634 |
case CC_OP_SARL: return compute_c_sarl(); |
5635 |
|
5636 |
#ifdef TARGET_X86_64
|
5637 |
case CC_OP_MULQ: return compute_c_mull(); |
5638 |
|
5639 |
case CC_OP_ADDQ: return compute_c_addq(); |
5640 |
|
5641 |
case CC_OP_ADCQ: return compute_c_adcq(); |
5642 |
|
5643 |
case CC_OP_SUBQ: return compute_c_subq(); |
5644 |
|
5645 |
case CC_OP_SBBQ: return compute_c_sbbq(); |
5646 |
|
5647 |
case CC_OP_LOGICQ: return compute_c_logicq(); |
5648 |
|
5649 |
case CC_OP_INCQ: return compute_c_incl(); |
5650 |
|
5651 |
case CC_OP_DECQ: return compute_c_incl(); |
5652 |
|
5653 |
case CC_OP_SHLQ: return compute_c_shlq(); |
5654 |
|
5655 |
case CC_OP_SARQ: return compute_c_sarl(); |
5656 |
#endif
|
5657 |
} |
5658 |
} |