root / target-i386 / helper.c @ 419fb20a
History | View | Annotate | Download (40.4 kB)
1 |
/*
|
---|---|
2 |
* i386 helpers (without register variable usage)
|
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 |
#include <stdarg.h> |
20 |
#include <stdlib.h> |
21 |
#include <stdio.h> |
22 |
#include <string.h> |
23 |
#include <inttypes.h> |
24 |
#include <signal.h> |
25 |
|
26 |
#include "cpu.h" |
27 |
#include "exec-all.h" |
28 |
#include "qemu-common.h" |
29 |
#include "kvm.h" |
30 |
#include "kvm_x86.h" |
31 |
#ifndef CONFIG_USER_ONLY
|
32 |
#include "sysemu.h" |
33 |
#include "monitor.h" |
34 |
#endif
|
35 |
|
36 |
//#define DEBUG_MMU
|
37 |
|
38 |
/* NOTE: must be called outside the CPU execute loop */
|
39 |
void cpu_reset(CPUX86State *env)
|
40 |
{ |
41 |
int i;
|
42 |
|
43 |
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
|
44 |
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
|
45 |
log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
46 |
} |
47 |
|
48 |
memset(env, 0, offsetof(CPUX86State, breakpoints));
|
49 |
|
50 |
tlb_flush(env, 1);
|
51 |
|
52 |
env->old_exception = -1;
|
53 |
|
54 |
/* init to reset state */
|
55 |
|
56 |
#ifdef CONFIG_SOFTMMU
|
57 |
env->hflags |= HF_SOFTMMU_MASK; |
58 |
#endif
|
59 |
env->hflags2 |= HF2_GIF_MASK; |
60 |
|
61 |
cpu_x86_update_cr0(env, 0x60000010);
|
62 |
env->a20_mask = ~0x0;
|
63 |
env->smbase = 0x30000;
|
64 |
|
65 |
env->idt.limit = 0xffff;
|
66 |
env->gdt.limit = 0xffff;
|
67 |
env->ldt.limit = 0xffff;
|
68 |
env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
|
69 |
env->tr.limit = 0xffff;
|
70 |
env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
|
71 |
|
72 |
cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, |
73 |
DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | |
74 |
DESC_R_MASK | DESC_A_MASK); |
75 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, |
76 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
77 |
DESC_A_MASK); |
78 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, |
79 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
80 |
DESC_A_MASK); |
81 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, |
82 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
83 |
DESC_A_MASK); |
84 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, |
85 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
86 |
DESC_A_MASK); |
87 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, |
88 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
89 |
DESC_A_MASK); |
90 |
|
91 |
env->eip = 0xfff0;
|
92 |
env->regs[R_EDX] = env->cpuid_version; |
93 |
|
94 |
env->eflags = 0x2;
|
95 |
|
96 |
/* FPU init */
|
97 |
for(i = 0;i < 8; i++) |
98 |
env->fptags[i] = 1;
|
99 |
env->fpuc = 0x37f;
|
100 |
|
101 |
env->mxcsr = 0x1f80;
|
102 |
|
103 |
memset(env->dr, 0, sizeof(env->dr)); |
104 |
env->dr[6] = DR6_FIXED_1;
|
105 |
env->dr[7] = DR7_FIXED_1;
|
106 |
cpu_breakpoint_remove_all(env, BP_CPU); |
107 |
cpu_watchpoint_remove_all(env, BP_CPU); |
108 |
} |
109 |
|
110 |
void cpu_x86_close(CPUX86State *env)
|
111 |
{ |
112 |
qemu_free(env); |
113 |
} |
114 |
|
115 |
static void cpu_x86_version(CPUState *env, int *family, int *model) |
116 |
{ |
117 |
int cpuver = env->cpuid_version;
|
118 |
|
119 |
if (family == NULL || model == NULL) { |
120 |
return;
|
121 |
} |
122 |
|
123 |
*family = (cpuver >> 8) & 0x0f; |
124 |
*model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f); |
125 |
} |
126 |
|
127 |
/* Broadcast MCA signal for processor version 06H_EH and above */
|
128 |
int cpu_x86_support_mca_broadcast(CPUState *env)
|
129 |
{ |
130 |
int family = 0; |
131 |
int model = 0; |
132 |
|
133 |
cpu_x86_version(env, &family, &model); |
134 |
if ((family == 6 && model >= 14) || family > 6) { |
135 |
return 1; |
136 |
} |
137 |
|
138 |
return 0; |
139 |
} |
140 |
|
141 |
/***********************************************************/
|
142 |
/* x86 debug */
|
143 |
|
144 |
static const char *cc_op_str[] = { |
145 |
"DYNAMIC",
|
146 |
"EFLAGS",
|
147 |
|
148 |
"MULB",
|
149 |
"MULW",
|
150 |
"MULL",
|
151 |
"MULQ",
|
152 |
|
153 |
"ADDB",
|
154 |
"ADDW",
|
155 |
"ADDL",
|
156 |
"ADDQ",
|
157 |
|
158 |
"ADCB",
|
159 |
"ADCW",
|
160 |
"ADCL",
|
161 |
"ADCQ",
|
162 |
|
163 |
"SUBB",
|
164 |
"SUBW",
|
165 |
"SUBL",
|
166 |
"SUBQ",
|
167 |
|
168 |
"SBBB",
|
169 |
"SBBW",
|
170 |
"SBBL",
|
171 |
"SBBQ",
|
172 |
|
173 |
"LOGICB",
|
174 |
"LOGICW",
|
175 |
"LOGICL",
|
176 |
"LOGICQ",
|
177 |
|
178 |
"INCB",
|
179 |
"INCW",
|
180 |
"INCL",
|
181 |
"INCQ",
|
182 |
|
183 |
"DECB",
|
184 |
"DECW",
|
185 |
"DECL",
|
186 |
"DECQ",
|
187 |
|
188 |
"SHLB",
|
189 |
"SHLW",
|
190 |
"SHLL",
|
191 |
"SHLQ",
|
192 |
|
193 |
"SARB",
|
194 |
"SARW",
|
195 |
"SARL",
|
196 |
"SARQ",
|
197 |
}; |
198 |
|
199 |
static void |
200 |
cpu_x86_dump_seg_cache(CPUState *env, FILE *f, fprintf_function cpu_fprintf, |
201 |
const char *name, struct SegmentCache *sc) |
202 |
{ |
203 |
#ifdef TARGET_X86_64
|
204 |
if (env->hflags & HF_CS64_MASK) {
|
205 |
cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name, |
206 |
sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
|
207 |
} else
|
208 |
#endif
|
209 |
{ |
210 |
cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
|
211 |
(uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
|
212 |
} |
213 |
|
214 |
if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
|
215 |
goto done;
|
216 |
|
217 |
cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
|
218 |
if (sc->flags & DESC_S_MASK) {
|
219 |
if (sc->flags & DESC_CS_MASK) {
|
220 |
cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
|
221 |
((sc->flags & DESC_B_MASK) ? "CS32" : "CS16")); |
222 |
cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-', |
223 |
(sc->flags & DESC_R_MASK) ? 'R' : '-'); |
224 |
} else {
|
225 |
cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16"); |
226 |
cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-', |
227 |
(sc->flags & DESC_W_MASK) ? 'W' : '-'); |
228 |
} |
229 |
cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-'); |
230 |
} else {
|
231 |
static const char *sys_type_name[2][16] = { |
232 |
{ /* 32 bit mode */
|
233 |
"Reserved", "TSS16-avl", "LDT", "TSS16-busy", |
234 |
"CallGate16", "TaskGate", "IntGate16", "TrapGate16", |
235 |
"Reserved", "TSS32-avl", "Reserved", "TSS32-busy", |
236 |
"CallGate32", "Reserved", "IntGate32", "TrapGate32" |
237 |
}, |
238 |
{ /* 64 bit mode */
|
239 |
"<hiword>", "Reserved", "LDT", "Reserved", "Reserved", |
240 |
"Reserved", "Reserved", "Reserved", "Reserved", |
241 |
"TSS64-avl", "Reserved", "TSS64-busy", "CallGate64", |
242 |
"Reserved", "IntGate64", "TrapGate64" |
243 |
} |
244 |
}; |
245 |
cpu_fprintf(f, "%s",
|
246 |
sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0] |
247 |
[(sc->flags & DESC_TYPE_MASK) |
248 |
>> DESC_TYPE_SHIFT]); |
249 |
} |
250 |
done:
|
251 |
cpu_fprintf(f, "\n");
|
252 |
} |
253 |
|
254 |
#define DUMP_CODE_BYTES_TOTAL 50 |
255 |
#define DUMP_CODE_BYTES_BACKWARD 20 |
256 |
|
257 |
void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
|
258 |
int flags)
|
259 |
{ |
260 |
int eflags, i, nb;
|
261 |
char cc_op_name[32]; |
262 |
static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; |
263 |
|
264 |
cpu_synchronize_state(env); |
265 |
|
266 |
eflags = env->eflags; |
267 |
#ifdef TARGET_X86_64
|
268 |
if (env->hflags & HF_CS64_MASK) {
|
269 |
cpu_fprintf(f, |
270 |
"RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" |
271 |
"RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" |
272 |
"R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" |
273 |
"R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" |
274 |
"RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
275 |
env->regs[R_EAX], |
276 |
env->regs[R_EBX], |
277 |
env->regs[R_ECX], |
278 |
env->regs[R_EDX], |
279 |
env->regs[R_ESI], |
280 |
env->regs[R_EDI], |
281 |
env->regs[R_EBP], |
282 |
env->regs[R_ESP], |
283 |
env->regs[8],
|
284 |
env->regs[9],
|
285 |
env->regs[10],
|
286 |
env->regs[11],
|
287 |
env->regs[12],
|
288 |
env->regs[13],
|
289 |
env->regs[14],
|
290 |
env->regs[15],
|
291 |
env->eip, eflags, |
292 |
eflags & DF_MASK ? 'D' : '-', |
293 |
eflags & CC_O ? 'O' : '-', |
294 |
eflags & CC_S ? 'S' : '-', |
295 |
eflags & CC_Z ? 'Z' : '-', |
296 |
eflags & CC_A ? 'A' : '-', |
297 |
eflags & CC_P ? 'P' : '-', |
298 |
eflags & CC_C ? 'C' : '-', |
299 |
env->hflags & HF_CPL_MASK, |
300 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
301 |
(env->a20_mask >> 20) & 1, |
302 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
303 |
env->halted); |
304 |
} else
|
305 |
#endif
|
306 |
{ |
307 |
cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
|
308 |
"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
|
309 |
"EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
|
310 |
(uint32_t)env->regs[R_EAX], |
311 |
(uint32_t)env->regs[R_EBX], |
312 |
(uint32_t)env->regs[R_ECX], |
313 |
(uint32_t)env->regs[R_EDX], |
314 |
(uint32_t)env->regs[R_ESI], |
315 |
(uint32_t)env->regs[R_EDI], |
316 |
(uint32_t)env->regs[R_EBP], |
317 |
(uint32_t)env->regs[R_ESP], |
318 |
(uint32_t)env->eip, eflags, |
319 |
eflags & DF_MASK ? 'D' : '-', |
320 |
eflags & CC_O ? 'O' : '-', |
321 |
eflags & CC_S ? 'S' : '-', |
322 |
eflags & CC_Z ? 'Z' : '-', |
323 |
eflags & CC_A ? 'A' : '-', |
324 |
eflags & CC_P ? 'P' : '-', |
325 |
eflags & CC_C ? 'C' : '-', |
326 |
env->hflags & HF_CPL_MASK, |
327 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
328 |
(env->a20_mask >> 20) & 1, |
329 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
330 |
env->halted); |
331 |
} |
332 |
|
333 |
for(i = 0; i < 6; i++) { |
334 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i], |
335 |
&env->segs[i]); |
336 |
} |
337 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
|
338 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
|
339 |
|
340 |
#ifdef TARGET_X86_64
|
341 |
if (env->hflags & HF_LMA_MASK) {
|
342 |
cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
343 |
env->gdt.base, env->gdt.limit); |
344 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
345 |
env->idt.base, env->idt.limit); |
346 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
347 |
(uint32_t)env->cr[0],
|
348 |
env->cr[2],
|
349 |
env->cr[3],
|
350 |
(uint32_t)env->cr[4]);
|
351 |
for(i = 0; i < 4; i++) |
352 |
cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
353 |
cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
354 |
env->dr[6], env->dr[7]); |
355 |
} else
|
356 |
#endif
|
357 |
{ |
358 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
359 |
(uint32_t)env->gdt.base, env->gdt.limit); |
360 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
361 |
(uint32_t)env->idt.base, env->idt.limit); |
362 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
363 |
(uint32_t)env->cr[0],
|
364 |
(uint32_t)env->cr[2],
|
365 |
(uint32_t)env->cr[3],
|
366 |
(uint32_t)env->cr[4]);
|
367 |
for(i = 0; i < 4; i++) { |
368 |
cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]); |
369 |
} |
370 |
cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n", |
371 |
env->dr[6], env->dr[7]); |
372 |
} |
373 |
if (flags & X86_DUMP_CCOP) {
|
374 |
if ((unsigned)env->cc_op < CC_OP_NB) |
375 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
376 |
else
|
377 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
378 |
#ifdef TARGET_X86_64
|
379 |
if (env->hflags & HF_CS64_MASK) {
|
380 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
381 |
env->cc_src, env->cc_dst, |
382 |
cc_op_name); |
383 |
} else
|
384 |
#endif
|
385 |
{ |
386 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
387 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
388 |
cc_op_name); |
389 |
} |
390 |
} |
391 |
cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer); |
392 |
if (flags & X86_DUMP_FPU) {
|
393 |
int fptag;
|
394 |
fptag = 0;
|
395 |
for(i = 0; i < 8; i++) { |
396 |
fptag |= ((!env->fptags[i]) << i); |
397 |
} |
398 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
399 |
env->fpuc, |
400 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
401 |
env->fpstt, |
402 |
fptag, |
403 |
env->mxcsr); |
404 |
for(i=0;i<8;i++) { |
405 |
#if defined(USE_X86LDOUBLE)
|
406 |
union {
|
407 |
long double d; |
408 |
struct {
|
409 |
uint64_t lower; |
410 |
uint16_t upper; |
411 |
} l; |
412 |
} tmp; |
413 |
tmp.d = env->fpregs[i].d; |
414 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
415 |
i, tmp.l.lower, tmp.l.upper); |
416 |
#else
|
417 |
cpu_fprintf(f, "FPR%d=%016" PRIx64,
|
418 |
i, env->fpregs[i].mmx.q); |
419 |
#endif
|
420 |
if ((i & 1) == 1) |
421 |
cpu_fprintf(f, "\n");
|
422 |
else
|
423 |
cpu_fprintf(f, " ");
|
424 |
} |
425 |
if (env->hflags & HF_CS64_MASK)
|
426 |
nb = 16;
|
427 |
else
|
428 |
nb = 8;
|
429 |
for(i=0;i<nb;i++) { |
430 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
431 |
i, |
432 |
env->xmm_regs[i].XMM_L(3),
|
433 |
env->xmm_regs[i].XMM_L(2),
|
434 |
env->xmm_regs[i].XMM_L(1),
|
435 |
env->xmm_regs[i].XMM_L(0));
|
436 |
if ((i & 1) == 1) |
437 |
cpu_fprintf(f, "\n");
|
438 |
else
|
439 |
cpu_fprintf(f, " ");
|
440 |
} |
441 |
} |
442 |
if (flags & CPU_DUMP_CODE) {
|
443 |
target_ulong base = env->segs[R_CS].base + env->eip; |
444 |
target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD); |
445 |
uint8_t code; |
446 |
char codestr[3]; |
447 |
|
448 |
cpu_fprintf(f, "Code=");
|
449 |
for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) { |
450 |
if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) { |
451 |
snprintf(codestr, sizeof(codestr), "%02x", code); |
452 |
} else {
|
453 |
snprintf(codestr, sizeof(codestr), "??"); |
454 |
} |
455 |
cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "", |
456 |
i == offs ? "<" : "", codestr, i == offs ? ">" : ""); |
457 |
} |
458 |
cpu_fprintf(f, "\n");
|
459 |
} |
460 |
} |
461 |
|
462 |
/***********************************************************/
|
463 |
/* x86 mmu */
|
464 |
/* XXX: add PGE support */
|
465 |
|
466 |
void cpu_x86_set_a20(CPUX86State *env, int a20_state) |
467 |
{ |
468 |
a20_state = (a20_state != 0);
|
469 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
470 |
#if defined(DEBUG_MMU)
|
471 |
printf("A20 update: a20=%d\n", a20_state);
|
472 |
#endif
|
473 |
/* if the cpu is currently executing code, we must unlink it and
|
474 |
all the potentially executing TB */
|
475 |
cpu_interrupt(env, CPU_INTERRUPT_EXITTB); |
476 |
|
477 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
478 |
we must flush everything */
|
479 |
tlb_flush(env, 1);
|
480 |
env->a20_mask = ~(1 << 20) | (a20_state << 20); |
481 |
} |
482 |
} |
483 |
|
484 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
485 |
{ |
486 |
int pe_state;
|
487 |
|
488 |
#if defined(DEBUG_MMU)
|
489 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
490 |
#endif
|
491 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
492 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
493 |
tlb_flush(env, 1);
|
494 |
} |
495 |
|
496 |
#ifdef TARGET_X86_64
|
497 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
498 |
(env->efer & MSR_EFER_LME)) { |
499 |
/* enter in long mode */
|
500 |
/* XXX: generate an exception */
|
501 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
502 |
return;
|
503 |
env->efer |= MSR_EFER_LMA; |
504 |
env->hflags |= HF_LMA_MASK; |
505 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
506 |
(env->efer & MSR_EFER_LMA)) { |
507 |
/* exit long mode */
|
508 |
env->efer &= ~MSR_EFER_LMA; |
509 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
510 |
env->eip &= 0xffffffff;
|
511 |
} |
512 |
#endif
|
513 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
514 |
|
515 |
/* update PE flag in hidden flags */
|
516 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
517 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
518 |
/* ensure that ADDSEG is always set in real mode */
|
519 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
520 |
/* update FPU flags */
|
521 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
522 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
523 |
} |
524 |
|
525 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
526 |
the PDPT */
|
527 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
528 |
{ |
529 |
env->cr[3] = new_cr3;
|
530 |
if (env->cr[0] & CR0_PG_MASK) { |
531 |
#if defined(DEBUG_MMU)
|
532 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
533 |
#endif
|
534 |
tlb_flush(env, 0);
|
535 |
} |
536 |
} |
537 |
|
538 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
539 |
{ |
540 |
#if defined(DEBUG_MMU)
|
541 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
542 |
#endif
|
543 |
if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
|
544 |
(env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
|
545 |
tlb_flush(env, 1);
|
546 |
} |
547 |
/* SSE handling */
|
548 |
if (!(env->cpuid_features & CPUID_SSE))
|
549 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
550 |
if (new_cr4 & CR4_OSFXSR_MASK)
|
551 |
env->hflags |= HF_OSFXSR_MASK; |
552 |
else
|
553 |
env->hflags &= ~HF_OSFXSR_MASK; |
554 |
|
555 |
env->cr[4] = new_cr4;
|
556 |
} |
557 |
|
558 |
#if defined(CONFIG_USER_ONLY)
|
559 |
|
560 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
561 |
int is_write, int mmu_idx, int is_softmmu) |
562 |
{ |
563 |
/* user mode only emulation */
|
564 |
is_write &= 1;
|
565 |
env->cr[2] = addr;
|
566 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
567 |
env->error_code |= PG_ERROR_U_MASK; |
568 |
env->exception_index = EXCP0E_PAGE; |
569 |
return 1; |
570 |
} |
571 |
|
572 |
#else
|
573 |
|
574 |
/* XXX: This value should match the one returned by CPUID
|
575 |
* and in exec.c */
|
576 |
# if defined(TARGET_X86_64)
|
577 |
# define PHYS_ADDR_MASK 0xfffffff000LL |
578 |
# else
|
579 |
# define PHYS_ADDR_MASK 0xffffff000LL |
580 |
# endif
|
581 |
|
582 |
/* return value:
|
583 |
-1 = cannot handle fault
|
584 |
0 = nothing more to do
|
585 |
1 = generate PF fault
|
586 |
*/
|
587 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
588 |
int is_write1, int mmu_idx, int is_softmmu) |
589 |
{ |
590 |
uint64_t ptep, pte; |
591 |
target_ulong pde_addr, pte_addr; |
592 |
int error_code, is_dirty, prot, page_size, is_write, is_user;
|
593 |
target_phys_addr_t paddr; |
594 |
uint32_t page_offset; |
595 |
target_ulong vaddr, virt_addr; |
596 |
|
597 |
is_user = mmu_idx == MMU_USER_IDX; |
598 |
#if defined(DEBUG_MMU)
|
599 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
600 |
addr, is_write1, is_user, env->eip); |
601 |
#endif
|
602 |
is_write = is_write1 & 1;
|
603 |
|
604 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
605 |
pte = addr; |
606 |
virt_addr = addr & TARGET_PAGE_MASK; |
607 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
608 |
page_size = 4096;
|
609 |
goto do_mapping;
|
610 |
} |
611 |
|
612 |
if (env->cr[4] & CR4_PAE_MASK) { |
613 |
uint64_t pde, pdpe; |
614 |
target_ulong pdpe_addr; |
615 |
|
616 |
#ifdef TARGET_X86_64
|
617 |
if (env->hflags & HF_LMA_MASK) {
|
618 |
uint64_t pml4e_addr, pml4e; |
619 |
int32_t sext; |
620 |
|
621 |
/* test virtual address sign extension */
|
622 |
sext = (int64_t)addr >> 47;
|
623 |
if (sext != 0 && sext != -1) { |
624 |
env->error_code = 0;
|
625 |
env->exception_index = EXCP0D_GPF; |
626 |
return 1; |
627 |
} |
628 |
|
629 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
630 |
env->a20_mask; |
631 |
pml4e = ldq_phys(pml4e_addr); |
632 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
633 |
error_code = 0;
|
634 |
goto do_fault;
|
635 |
} |
636 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
637 |
error_code = PG_ERROR_RSVD_MASK; |
638 |
goto do_fault;
|
639 |
} |
640 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
641 |
pml4e |= PG_ACCESSED_MASK; |
642 |
stl_phys_notdirty(pml4e_addr, pml4e); |
643 |
} |
644 |
ptep = pml4e ^ PG_NX_MASK; |
645 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
646 |
env->a20_mask; |
647 |
pdpe = ldq_phys(pdpe_addr); |
648 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
649 |
error_code = 0;
|
650 |
goto do_fault;
|
651 |
} |
652 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
653 |
error_code = PG_ERROR_RSVD_MASK; |
654 |
goto do_fault;
|
655 |
} |
656 |
ptep &= pdpe ^ PG_NX_MASK; |
657 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
658 |
pdpe |= PG_ACCESSED_MASK; |
659 |
stl_phys_notdirty(pdpe_addr, pdpe); |
660 |
} |
661 |
} else
|
662 |
#endif
|
663 |
{ |
664 |
/* XXX: load them when cr3 is loaded ? */
|
665 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
666 |
env->a20_mask; |
667 |
pdpe = ldq_phys(pdpe_addr); |
668 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
669 |
error_code = 0;
|
670 |
goto do_fault;
|
671 |
} |
672 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
673 |
} |
674 |
|
675 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
676 |
env->a20_mask; |
677 |
pde = ldq_phys(pde_addr); |
678 |
if (!(pde & PG_PRESENT_MASK)) {
|
679 |
error_code = 0;
|
680 |
goto do_fault;
|
681 |
} |
682 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
683 |
error_code = PG_ERROR_RSVD_MASK; |
684 |
goto do_fault;
|
685 |
} |
686 |
ptep &= pde ^ PG_NX_MASK; |
687 |
if (pde & PG_PSE_MASK) {
|
688 |
/* 2 MB page */
|
689 |
page_size = 2048 * 1024; |
690 |
ptep ^= PG_NX_MASK; |
691 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
692 |
goto do_fault_protect;
|
693 |
if (is_user) {
|
694 |
if (!(ptep & PG_USER_MASK))
|
695 |
goto do_fault_protect;
|
696 |
if (is_write && !(ptep & PG_RW_MASK))
|
697 |
goto do_fault_protect;
|
698 |
} else {
|
699 |
if ((env->cr[0] & CR0_WP_MASK) && |
700 |
is_write && !(ptep & PG_RW_MASK)) |
701 |
goto do_fault_protect;
|
702 |
} |
703 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
704 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
705 |
pde |= PG_ACCESSED_MASK; |
706 |
if (is_dirty)
|
707 |
pde |= PG_DIRTY_MASK; |
708 |
stl_phys_notdirty(pde_addr, pde); |
709 |
} |
710 |
/* align to page_size */
|
711 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
712 |
virt_addr = addr & ~(page_size - 1);
|
713 |
} else {
|
714 |
/* 4 KB page */
|
715 |
if (!(pde & PG_ACCESSED_MASK)) {
|
716 |
pde |= PG_ACCESSED_MASK; |
717 |
stl_phys_notdirty(pde_addr, pde); |
718 |
} |
719 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
720 |
env->a20_mask; |
721 |
pte = ldq_phys(pte_addr); |
722 |
if (!(pte & PG_PRESENT_MASK)) {
|
723 |
error_code = 0;
|
724 |
goto do_fault;
|
725 |
} |
726 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
727 |
error_code = PG_ERROR_RSVD_MASK; |
728 |
goto do_fault;
|
729 |
} |
730 |
/* combine pde and pte nx, user and rw protections */
|
731 |
ptep &= pte ^ PG_NX_MASK; |
732 |
ptep ^= PG_NX_MASK; |
733 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
734 |
goto do_fault_protect;
|
735 |
if (is_user) {
|
736 |
if (!(ptep & PG_USER_MASK))
|
737 |
goto do_fault_protect;
|
738 |
if (is_write && !(ptep & PG_RW_MASK))
|
739 |
goto do_fault_protect;
|
740 |
} else {
|
741 |
if ((env->cr[0] & CR0_WP_MASK) && |
742 |
is_write && !(ptep & PG_RW_MASK)) |
743 |
goto do_fault_protect;
|
744 |
} |
745 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
746 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
747 |
pte |= PG_ACCESSED_MASK; |
748 |
if (is_dirty)
|
749 |
pte |= PG_DIRTY_MASK; |
750 |
stl_phys_notdirty(pte_addr, pte); |
751 |
} |
752 |
page_size = 4096;
|
753 |
virt_addr = addr & ~0xfff;
|
754 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
755 |
} |
756 |
} else {
|
757 |
uint32_t pde; |
758 |
|
759 |
/* page directory entry */
|
760 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
761 |
env->a20_mask; |
762 |
pde = ldl_phys(pde_addr); |
763 |
if (!(pde & PG_PRESENT_MASK)) {
|
764 |
error_code = 0;
|
765 |
goto do_fault;
|
766 |
} |
767 |
/* if PSE bit is set, then we use a 4MB page */
|
768 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
769 |
page_size = 4096 * 1024; |
770 |
if (is_user) {
|
771 |
if (!(pde & PG_USER_MASK))
|
772 |
goto do_fault_protect;
|
773 |
if (is_write && !(pde & PG_RW_MASK))
|
774 |
goto do_fault_protect;
|
775 |
} else {
|
776 |
if ((env->cr[0] & CR0_WP_MASK) && |
777 |
is_write && !(pde & PG_RW_MASK)) |
778 |
goto do_fault_protect;
|
779 |
} |
780 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
781 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
782 |
pde |= PG_ACCESSED_MASK; |
783 |
if (is_dirty)
|
784 |
pde |= PG_DIRTY_MASK; |
785 |
stl_phys_notdirty(pde_addr, pde); |
786 |
} |
787 |
|
788 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
789 |
ptep = pte; |
790 |
virt_addr = addr & ~(page_size - 1);
|
791 |
} else {
|
792 |
if (!(pde & PG_ACCESSED_MASK)) {
|
793 |
pde |= PG_ACCESSED_MASK; |
794 |
stl_phys_notdirty(pde_addr, pde); |
795 |
} |
796 |
|
797 |
/* page directory entry */
|
798 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
799 |
env->a20_mask; |
800 |
pte = ldl_phys(pte_addr); |
801 |
if (!(pte & PG_PRESENT_MASK)) {
|
802 |
error_code = 0;
|
803 |
goto do_fault;
|
804 |
} |
805 |
/* combine pde and pte user and rw protections */
|
806 |
ptep = pte & pde; |
807 |
if (is_user) {
|
808 |
if (!(ptep & PG_USER_MASK))
|
809 |
goto do_fault_protect;
|
810 |
if (is_write && !(ptep & PG_RW_MASK))
|
811 |
goto do_fault_protect;
|
812 |
} else {
|
813 |
if ((env->cr[0] & CR0_WP_MASK) && |
814 |
is_write && !(ptep & PG_RW_MASK)) |
815 |
goto do_fault_protect;
|
816 |
} |
817 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
818 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
819 |
pte |= PG_ACCESSED_MASK; |
820 |
if (is_dirty)
|
821 |
pte |= PG_DIRTY_MASK; |
822 |
stl_phys_notdirty(pte_addr, pte); |
823 |
} |
824 |
page_size = 4096;
|
825 |
virt_addr = addr & ~0xfff;
|
826 |
} |
827 |
} |
828 |
/* the page can be put in the TLB */
|
829 |
prot = PAGE_READ; |
830 |
if (!(ptep & PG_NX_MASK))
|
831 |
prot |= PAGE_EXEC; |
832 |
if (pte & PG_DIRTY_MASK) {
|
833 |
/* only set write access if already dirty... otherwise wait
|
834 |
for dirty access */
|
835 |
if (is_user) {
|
836 |
if (ptep & PG_RW_MASK)
|
837 |
prot |= PAGE_WRITE; |
838 |
} else {
|
839 |
if (!(env->cr[0] & CR0_WP_MASK) || |
840 |
(ptep & PG_RW_MASK)) |
841 |
prot |= PAGE_WRITE; |
842 |
} |
843 |
} |
844 |
do_mapping:
|
845 |
pte = pte & env->a20_mask; |
846 |
|
847 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
848 |
avoid filling it too fast */
|
849 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
850 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
851 |
vaddr = virt_addr + page_offset; |
852 |
|
853 |
tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size); |
854 |
return 0; |
855 |
do_fault_protect:
|
856 |
error_code = PG_ERROR_P_MASK; |
857 |
do_fault:
|
858 |
error_code |= (is_write << PG_ERROR_W_BIT); |
859 |
if (is_user)
|
860 |
error_code |= PG_ERROR_U_MASK; |
861 |
if (is_write1 == 2 && |
862 |
(env->efer & MSR_EFER_NXE) && |
863 |
(env->cr[4] & CR4_PAE_MASK))
|
864 |
error_code |= PG_ERROR_I_D_MASK; |
865 |
if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
866 |
/* cr2 is not modified in case of exceptions */
|
867 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
868 |
addr); |
869 |
} else {
|
870 |
env->cr[2] = addr;
|
871 |
} |
872 |
env->error_code = error_code; |
873 |
env->exception_index = EXCP0E_PAGE; |
874 |
return 1; |
875 |
} |
876 |
|
877 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
878 |
{ |
879 |
target_ulong pde_addr, pte_addr; |
880 |
uint64_t pte; |
881 |
target_phys_addr_t paddr; |
882 |
uint32_t page_offset; |
883 |
int page_size;
|
884 |
|
885 |
if (env->cr[4] & CR4_PAE_MASK) { |
886 |
target_ulong pdpe_addr; |
887 |
uint64_t pde, pdpe; |
888 |
|
889 |
#ifdef TARGET_X86_64
|
890 |
if (env->hflags & HF_LMA_MASK) {
|
891 |
uint64_t pml4e_addr, pml4e; |
892 |
int32_t sext; |
893 |
|
894 |
/* test virtual address sign extension */
|
895 |
sext = (int64_t)addr >> 47;
|
896 |
if (sext != 0 && sext != -1) |
897 |
return -1; |
898 |
|
899 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
900 |
env->a20_mask; |
901 |
pml4e = ldq_phys(pml4e_addr); |
902 |
if (!(pml4e & PG_PRESENT_MASK))
|
903 |
return -1; |
904 |
|
905 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
906 |
env->a20_mask; |
907 |
pdpe = ldq_phys(pdpe_addr); |
908 |
if (!(pdpe & PG_PRESENT_MASK))
|
909 |
return -1; |
910 |
} else
|
911 |
#endif
|
912 |
{ |
913 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
914 |
env->a20_mask; |
915 |
pdpe = ldq_phys(pdpe_addr); |
916 |
if (!(pdpe & PG_PRESENT_MASK))
|
917 |
return -1; |
918 |
} |
919 |
|
920 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
921 |
env->a20_mask; |
922 |
pde = ldq_phys(pde_addr); |
923 |
if (!(pde & PG_PRESENT_MASK)) {
|
924 |
return -1; |
925 |
} |
926 |
if (pde & PG_PSE_MASK) {
|
927 |
/* 2 MB page */
|
928 |
page_size = 2048 * 1024; |
929 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
930 |
} else {
|
931 |
/* 4 KB page */
|
932 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
933 |
env->a20_mask; |
934 |
page_size = 4096;
|
935 |
pte = ldq_phys(pte_addr); |
936 |
} |
937 |
if (!(pte & PG_PRESENT_MASK))
|
938 |
return -1; |
939 |
} else {
|
940 |
uint32_t pde; |
941 |
|
942 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
943 |
pte = addr; |
944 |
page_size = 4096;
|
945 |
} else {
|
946 |
/* page directory entry */
|
947 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
948 |
pde = ldl_phys(pde_addr); |
949 |
if (!(pde & PG_PRESENT_MASK))
|
950 |
return -1; |
951 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
952 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
953 |
page_size = 4096 * 1024; |
954 |
} else {
|
955 |
/* page directory entry */
|
956 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
957 |
pte = ldl_phys(pte_addr); |
958 |
if (!(pte & PG_PRESENT_MASK))
|
959 |
return -1; |
960 |
page_size = 4096;
|
961 |
} |
962 |
} |
963 |
pte = pte & env->a20_mask; |
964 |
} |
965 |
|
966 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
967 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
968 |
return paddr;
|
969 |
} |
970 |
|
971 |
void hw_breakpoint_insert(CPUState *env, int index) |
972 |
{ |
973 |
int type, err = 0; |
974 |
|
975 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
976 |
case 0: |
977 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
978 |
err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU, |
979 |
&env->cpu_breakpoint[index]); |
980 |
break;
|
981 |
case 1: |
982 |
type = BP_CPU | BP_MEM_WRITE; |
983 |
goto insert_wp;
|
984 |
case 2: |
985 |
/* No support for I/O watchpoints yet */
|
986 |
break;
|
987 |
case 3: |
988 |
type = BP_CPU | BP_MEM_ACCESS; |
989 |
insert_wp:
|
990 |
err = cpu_watchpoint_insert(env, env->dr[index], |
991 |
hw_breakpoint_len(env->dr[7], index),
|
992 |
type, &env->cpu_watchpoint[index]); |
993 |
break;
|
994 |
} |
995 |
if (err)
|
996 |
env->cpu_breakpoint[index] = NULL;
|
997 |
} |
998 |
|
999 |
void hw_breakpoint_remove(CPUState *env, int index) |
1000 |
{ |
1001 |
if (!env->cpu_breakpoint[index])
|
1002 |
return;
|
1003 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
1004 |
case 0: |
1005 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
1006 |
cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]); |
1007 |
break;
|
1008 |
case 1: |
1009 |
case 3: |
1010 |
cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]); |
1011 |
break;
|
1012 |
case 2: |
1013 |
/* No support for I/O watchpoints yet */
|
1014 |
break;
|
1015 |
} |
1016 |
} |
1017 |
|
1018 |
int check_hw_breakpoints(CPUState *env, int force_dr6_update) |
1019 |
{ |
1020 |
target_ulong dr6; |
1021 |
int reg, type;
|
1022 |
int hit_enabled = 0; |
1023 |
|
1024 |
dr6 = env->dr[6] & ~0xf; |
1025 |
for (reg = 0; reg < 4; reg++) { |
1026 |
type = hw_breakpoint_type(env->dr[7], reg);
|
1027 |
if ((type == 0 && env->dr[reg] == env->eip) || |
1028 |
((type & 1) && env->cpu_watchpoint[reg] &&
|
1029 |
(env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) { |
1030 |
dr6 |= 1 << reg;
|
1031 |
if (hw_breakpoint_enabled(env->dr[7], reg)) |
1032 |
hit_enabled = 1;
|
1033 |
} |
1034 |
} |
1035 |
if (hit_enabled || force_dr6_update)
|
1036 |
env->dr[6] = dr6;
|
1037 |
return hit_enabled;
|
1038 |
} |
1039 |
|
1040 |
static CPUDebugExcpHandler *prev_debug_excp_handler;
|
1041 |
|
1042 |
void raise_exception_env(int exception_index, CPUState *env); |
1043 |
|
1044 |
static void breakpoint_handler(CPUState *env) |
1045 |
{ |
1046 |
CPUBreakpoint *bp; |
1047 |
|
1048 |
if (env->watchpoint_hit) {
|
1049 |
if (env->watchpoint_hit->flags & BP_CPU) {
|
1050 |
env->watchpoint_hit = NULL;
|
1051 |
if (check_hw_breakpoints(env, 0)) |
1052 |
raise_exception_env(EXCP01_DB, env); |
1053 |
else
|
1054 |
cpu_resume_from_signal(env, NULL);
|
1055 |
} |
1056 |
} else {
|
1057 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) |
1058 |
if (bp->pc == env->eip) {
|
1059 |
if (bp->flags & BP_CPU) {
|
1060 |
check_hw_breakpoints(env, 1);
|
1061 |
raise_exception_env(EXCP01_DB, env); |
1062 |
} |
1063 |
break;
|
1064 |
} |
1065 |
} |
1066 |
if (prev_debug_excp_handler)
|
1067 |
prev_debug_excp_handler(env); |
1068 |
} |
1069 |
|
1070 |
static void |
1071 |
qemu_inject_x86_mce(Monitor *mon, CPUState *cenv, int bank, uint64_t status,
|
1072 |
uint64_t mcg_status, uint64_t addr, uint64_t misc, |
1073 |
int flags)
|
1074 |
{ |
1075 |
uint64_t mcg_cap = cenv->mcg_cap; |
1076 |
uint64_t *banks = cenv->mce_banks + 4 * bank;
|
1077 |
|
1078 |
/*
|
1079 |
* If there is an MCE exception being processed, ignore this SRAO MCE
|
1080 |
* unless unconditional injection was requested.
|
1081 |
*/
|
1082 |
if (!(flags & MCE_INJECT_UNCOND_AO) && !(status & MCI_STATUS_AR)
|
1083 |
&& (cenv->mcg_status & MCG_STATUS_MCIP)) { |
1084 |
return;
|
1085 |
} |
1086 |
if (status & MCI_STATUS_UC) {
|
1087 |
/*
|
1088 |
* if MSR_MCG_CTL is not all 1s, the uncorrected error
|
1089 |
* reporting is disabled
|
1090 |
*/
|
1091 |
if ((mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) { |
1092 |
monitor_printf(mon, |
1093 |
"CPU %d: Uncorrected error reporting disabled\n",
|
1094 |
cenv->cpu_index); |
1095 |
return;
|
1096 |
} |
1097 |
|
1098 |
/*
|
1099 |
* if MSR_MCi_CTL is not all 1s, the uncorrected error
|
1100 |
* reporting is disabled for the bank
|
1101 |
*/
|
1102 |
if (banks[0] != ~(uint64_t)0) { |
1103 |
monitor_printf(mon, "CPU %d: Uncorrected error reporting disabled "
|
1104 |
"for bank %d\n", cenv->cpu_index, bank);
|
1105 |
return;
|
1106 |
} |
1107 |
|
1108 |
if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
|
1109 |
!(cenv->cr[4] & CR4_MCE_MASK)) {
|
1110 |
monitor_printf(mon, "CPU %d: Previous MCE still in progress, "
|
1111 |
"raising triple fault\n", cenv->cpu_index);
|
1112 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
1113 |
qemu_system_reset_request(); |
1114 |
return;
|
1115 |
} |
1116 |
if (banks[1] & MCI_STATUS_VAL) { |
1117 |
status |= MCI_STATUS_OVER; |
1118 |
} |
1119 |
banks[2] = addr;
|
1120 |
banks[3] = misc;
|
1121 |
cenv->mcg_status = mcg_status; |
1122 |
banks[1] = status;
|
1123 |
cpu_interrupt(cenv, CPU_INTERRUPT_MCE); |
1124 |
} else if (!(banks[1] & MCI_STATUS_VAL) |
1125 |
|| !(banks[1] & MCI_STATUS_UC)) {
|
1126 |
if (banks[1] & MCI_STATUS_VAL) { |
1127 |
status |= MCI_STATUS_OVER; |
1128 |
} |
1129 |
banks[2] = addr;
|
1130 |
banks[3] = misc;
|
1131 |
banks[1] = status;
|
1132 |
} else {
|
1133 |
banks[1] |= MCI_STATUS_OVER;
|
1134 |
} |
1135 |
} |
1136 |
|
1137 |
void cpu_x86_inject_mce(Monitor *mon, CPUState *cenv, int bank, |
1138 |
uint64_t status, uint64_t mcg_status, uint64_t addr, |
1139 |
uint64_t misc, int flags)
|
1140 |
{ |
1141 |
unsigned bank_num = cenv->mcg_cap & 0xff; |
1142 |
CPUState *env; |
1143 |
int flag = 0; |
1144 |
|
1145 |
if (!cenv->mcg_cap) {
|
1146 |
monitor_printf(mon, "MCE injection not supported\n");
|
1147 |
return;
|
1148 |
} |
1149 |
if (bank >= bank_num) {
|
1150 |
monitor_printf(mon, "Invalid MCE bank number\n");
|
1151 |
return;
|
1152 |
} |
1153 |
if (!(status & MCI_STATUS_VAL)) {
|
1154 |
monitor_printf(mon, "Invalid MCE status code\n");
|
1155 |
return;
|
1156 |
} |
1157 |
if ((flags & MCE_INJECT_BROADCAST)
|
1158 |
&& !cpu_x86_support_mca_broadcast(cenv)) { |
1159 |
monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
|
1160 |
return;
|
1161 |
} |
1162 |
|
1163 |
if (kvm_enabled()) {
|
1164 |
if (flags & MCE_INJECT_BROADCAST) {
|
1165 |
flag |= MCE_BROADCAST; |
1166 |
} |
1167 |
|
1168 |
kvm_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc, flag); |
1169 |
} else {
|
1170 |
qemu_inject_x86_mce(mon, cenv, bank, status, mcg_status, addr, misc, |
1171 |
flags); |
1172 |
if (flags & MCE_INJECT_BROADCAST) {
|
1173 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
1174 |
if (cenv == env) {
|
1175 |
continue;
|
1176 |
} |
1177 |
qemu_inject_x86_mce(mon, env, 1,
|
1178 |
MCI_STATUS_VAL | MCI_STATUS_UC, |
1179 |
MCG_STATUS_MCIP | MCG_STATUS_RIPV, 0, 0, |
1180 |
flags); |
1181 |
} |
1182 |
} |
1183 |
} |
1184 |
} |
1185 |
#endif /* !CONFIG_USER_ONLY */ |
1186 |
|
1187 |
static void mce_init(CPUX86State *cenv) |
1188 |
{ |
1189 |
unsigned int bank; |
1190 |
|
1191 |
if (((cenv->cpuid_version >> 8) & 0xf) >= 6 |
1192 |
&& (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) == |
1193 |
(CPUID_MCE | CPUID_MCA)) { |
1194 |
cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF; |
1195 |
cenv->mcg_ctl = ~(uint64_t)0;
|
1196 |
for (bank = 0; bank < MCE_BANKS_DEF; bank++) { |
1197 |
cenv->mce_banks[bank * 4] = ~(uint64_t)0; |
1198 |
} |
1199 |
} |
1200 |
} |
1201 |
|
1202 |
int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector, |
1203 |
target_ulong *base, unsigned int *limit, |
1204 |
unsigned int *flags) |
1205 |
{ |
1206 |
SegmentCache *dt; |
1207 |
target_ulong ptr; |
1208 |
uint32_t e1, e2; |
1209 |
int index;
|
1210 |
|
1211 |
if (selector & 0x4) |
1212 |
dt = &env->ldt; |
1213 |
else
|
1214 |
dt = &env->gdt; |
1215 |
index = selector & ~7;
|
1216 |
ptr = dt->base + index; |
1217 |
if ((index + 7) > dt->limit |
1218 |
|| cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0 |
1219 |
|| cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0) |
1220 |
return 0; |
1221 |
|
1222 |
*base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
1223 |
*limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
1224 |
if (e2 & DESC_G_MASK)
|
1225 |
*limit = (*limit << 12) | 0xfff; |
1226 |
*flags = e2; |
1227 |
|
1228 |
return 1; |
1229 |
} |
1230 |
|
1231 |
CPUX86State *cpu_x86_init(const char *cpu_model) |
1232 |
{ |
1233 |
CPUX86State *env; |
1234 |
static int inited; |
1235 |
|
1236 |
env = qemu_mallocz(sizeof(CPUX86State));
|
1237 |
cpu_exec_init(env); |
1238 |
env->cpu_model_str = cpu_model; |
1239 |
|
1240 |
/* init various static tables */
|
1241 |
if (!inited) {
|
1242 |
inited = 1;
|
1243 |
optimize_flags_init(); |
1244 |
#ifndef CONFIG_USER_ONLY
|
1245 |
prev_debug_excp_handler = |
1246 |
cpu_set_debug_excp_handler(breakpoint_handler); |
1247 |
#endif
|
1248 |
} |
1249 |
if (cpu_x86_register(env, cpu_model) < 0) { |
1250 |
cpu_x86_close(env); |
1251 |
return NULL; |
1252 |
} |
1253 |
mce_init(env); |
1254 |
|
1255 |
qemu_init_vcpu(env); |
1256 |
|
1257 |
return env;
|
1258 |
} |
1259 |
|
1260 |
#if !defined(CONFIG_USER_ONLY)
|
1261 |
void do_cpu_init(CPUState *env)
|
1262 |
{ |
1263 |
int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
|
1264 |
cpu_reset(env); |
1265 |
env->interrupt_request = sipi; |
1266 |
apic_init_reset(env->apic_state); |
1267 |
env->halted = !cpu_is_bsp(env); |
1268 |
} |
1269 |
|
1270 |
void do_cpu_sipi(CPUState *env)
|
1271 |
{ |
1272 |
apic_sipi(env->apic_state); |
1273 |
} |
1274 |
#else
|
1275 |
void do_cpu_init(CPUState *env)
|
1276 |
{ |
1277 |
} |
1278 |
void do_cpu_sipi(CPUState *env)
|
1279 |
{ |
1280 |
} |
1281 |
#endif
|