root / target-i386 / helper.c @ 2bd3e04c
History | View | Annotate | Download (38.5 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 |
|
| 32 |
//#define DEBUG_MMU
|
| 33 |
|
| 34 |
/* NOTE: must be called outside the CPU execute loop */
|
| 35 |
void cpu_reset(CPUX86State *env)
|
| 36 |
{
|
| 37 |
int i;
|
| 38 |
|
| 39 |
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
|
| 40 |
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
|
| 41 |
log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
| 42 |
} |
| 43 |
|
| 44 |
memset(env, 0, offsetof(CPUX86State, breakpoints));
|
| 45 |
|
| 46 |
tlb_flush(env, 1);
|
| 47 |
|
| 48 |
env->old_exception = -1;
|
| 49 |
|
| 50 |
/* init to reset state */
|
| 51 |
|
| 52 |
#ifdef CONFIG_SOFTMMU
|
| 53 |
env->hflags |= HF_SOFTMMU_MASK; |
| 54 |
#endif
|
| 55 |
env->hflags2 |= HF2_GIF_MASK; |
| 56 |
|
| 57 |
cpu_x86_update_cr0(env, 0x60000010);
|
| 58 |
env->a20_mask = ~0x0;
|
| 59 |
env->smbase = 0x30000;
|
| 60 |
|
| 61 |
env->idt.limit = 0xffff;
|
| 62 |
env->gdt.limit = 0xffff;
|
| 63 |
env->ldt.limit = 0xffff;
|
| 64 |
env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
|
| 65 |
env->tr.limit = 0xffff;
|
| 66 |
env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
|
| 67 |
|
| 68 |
cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, |
| 69 |
DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | |
| 70 |
DESC_R_MASK | DESC_A_MASK); |
| 71 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, |
| 72 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 73 |
DESC_A_MASK); |
| 74 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, |
| 75 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 76 |
DESC_A_MASK); |
| 77 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, |
| 78 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 79 |
DESC_A_MASK); |
| 80 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, |
| 81 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 82 |
DESC_A_MASK); |
| 83 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, |
| 84 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
| 85 |
DESC_A_MASK); |
| 86 |
|
| 87 |
env->eip = 0xfff0;
|
| 88 |
env->regs[R_EDX] = env->cpuid_version; |
| 89 |
|
| 90 |
env->eflags = 0x2;
|
| 91 |
|
| 92 |
/* FPU init */
|
| 93 |
for(i = 0;i < 8; i++) |
| 94 |
env->fptags[i] = 1;
|
| 95 |
env->fpuc = 0x37f;
|
| 96 |
|
| 97 |
env->mxcsr = 0x1f80;
|
| 98 |
|
| 99 |
memset(env->dr, 0, sizeof(env->dr)); |
| 100 |
env->dr[6] = DR6_FIXED_1;
|
| 101 |
env->dr[7] = DR7_FIXED_1;
|
| 102 |
cpu_breakpoint_remove_all(env, BP_CPU); |
| 103 |
cpu_watchpoint_remove_all(env, BP_CPU); |
| 104 |
|
| 105 |
env->mcg_status = 0;
|
| 106 |
} |
| 107 |
|
| 108 |
void cpu_x86_close(CPUX86State *env)
|
| 109 |
{
|
| 110 |
qemu_free(env); |
| 111 |
} |
| 112 |
|
| 113 |
static void cpu_x86_version(CPUState *env, int *family, int *model) |
| 114 |
{
|
| 115 |
int cpuver = env->cpuid_version;
|
| 116 |
|
| 117 |
if (family == NULL || model == NULL) { |
| 118 |
return;
|
| 119 |
} |
| 120 |
|
| 121 |
*family = (cpuver >> 8) & 0x0f; |
| 122 |
*model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f); |
| 123 |
} |
| 124 |
|
| 125 |
/* Broadcast MCA signal for processor version 06H_EH and above */
|
| 126 |
int cpu_x86_support_mca_broadcast(CPUState *env)
|
| 127 |
{
|
| 128 |
int family = 0; |
| 129 |
int model = 0; |
| 130 |
|
| 131 |
cpu_x86_version(env, &family, &model); |
| 132 |
if ((family == 6 && model >= 14) || family > 6) { |
| 133 |
return 1; |
| 134 |
} |
| 135 |
|
| 136 |
return 0; |
| 137 |
} |
| 138 |
|
| 139 |
/***********************************************************/
|
| 140 |
/* x86 debug */
|
| 141 |
|
| 142 |
static const char *cc_op_str[] = { |
| 143 |
"DYNAMIC",
|
| 144 |
"EFLAGS",
|
| 145 |
|
| 146 |
"MULB",
|
| 147 |
"MULW",
|
| 148 |
"MULL",
|
| 149 |
"MULQ",
|
| 150 |
|
| 151 |
"ADDB",
|
| 152 |
"ADDW",
|
| 153 |
"ADDL",
|
| 154 |
"ADDQ",
|
| 155 |
|
| 156 |
"ADCB",
|
| 157 |
"ADCW",
|
| 158 |
"ADCL",
|
| 159 |
"ADCQ",
|
| 160 |
|
| 161 |
"SUBB",
|
| 162 |
"SUBW",
|
| 163 |
"SUBL",
|
| 164 |
"SUBQ",
|
| 165 |
|
| 166 |
"SBBB",
|
| 167 |
"SBBW",
|
| 168 |
"SBBL",
|
| 169 |
"SBBQ",
|
| 170 |
|
| 171 |
"LOGICB",
|
| 172 |
"LOGICW",
|
| 173 |
"LOGICL",
|
| 174 |
"LOGICQ",
|
| 175 |
|
| 176 |
"INCB",
|
| 177 |
"INCW",
|
| 178 |
"INCL",
|
| 179 |
"INCQ",
|
| 180 |
|
| 181 |
"DECB",
|
| 182 |
"DECW",
|
| 183 |
"DECL",
|
| 184 |
"DECQ",
|
| 185 |
|
| 186 |
"SHLB",
|
| 187 |
"SHLW",
|
| 188 |
"SHLL",
|
| 189 |
"SHLQ",
|
| 190 |
|
| 191 |
"SARB",
|
| 192 |
"SARW",
|
| 193 |
"SARL",
|
| 194 |
"SARQ",
|
| 195 |
}; |
| 196 |
|
| 197 |
static void |
| 198 |
cpu_x86_dump_seg_cache(CPUState *env, FILE *f, fprintf_function cpu_fprintf, |
| 199 |
const char *name, struct SegmentCache *sc) |
| 200 |
{
|
| 201 |
#ifdef TARGET_X86_64
|
| 202 |
if (env->hflags & HF_CS64_MASK) {
|
| 203 |
cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name, |
| 204 |
sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00);
|
| 205 |
} else
|
| 206 |
#endif
|
| 207 |
{
|
| 208 |
cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
|
| 209 |
(uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00);
|
| 210 |
} |
| 211 |
|
| 212 |
if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
|
| 213 |
goto done;
|
| 214 |
|
| 215 |
cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
|
| 216 |
if (sc->flags & DESC_S_MASK) {
|
| 217 |
if (sc->flags & DESC_CS_MASK) {
|
| 218 |
cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
|
| 219 |
((sc->flags & DESC_B_MASK) ? "CS32" : "CS16")); |
| 220 |
cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-', |
| 221 |
(sc->flags & DESC_R_MASK) ? 'R' : '-'); |
| 222 |
} else {
|
| 223 |
cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16"); |
| 224 |
cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-', |
| 225 |
(sc->flags & DESC_W_MASK) ? 'W' : '-'); |
| 226 |
} |
| 227 |
cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-'); |
| 228 |
} else {
|
| 229 |
static const char *sys_type_name[2][16] = { |
| 230 |
{ /* 32 bit mode */
|
| 231 |
"Reserved", "TSS16-avl", "LDT", "TSS16-busy", |
| 232 |
"CallGate16", "TaskGate", "IntGate16", "TrapGate16", |
| 233 |
"Reserved", "TSS32-avl", "Reserved", "TSS32-busy", |
| 234 |
"CallGate32", "Reserved", "IntGate32", "TrapGate32" |
| 235 |
}, |
| 236 |
{ /* 64 bit mode */
|
| 237 |
"<hiword>", "Reserved", "LDT", "Reserved", "Reserved", |
| 238 |
"Reserved", "Reserved", "Reserved", "Reserved", |
| 239 |
"TSS64-avl", "Reserved", "TSS64-busy", "CallGate64", |
| 240 |
"Reserved", "IntGate64", "TrapGate64" |
| 241 |
} |
| 242 |
}; |
| 243 |
cpu_fprintf(f, "%s",
|
| 244 |
sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0] |
| 245 |
[(sc->flags & DESC_TYPE_MASK) |
| 246 |
>> DESC_TYPE_SHIFT]); |
| 247 |
} |
| 248 |
done:
|
| 249 |
cpu_fprintf(f, "\n");
|
| 250 |
} |
| 251 |
|
| 252 |
void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
|
| 253 |
int flags)
|
| 254 |
{
|
| 255 |
int eflags, i, nb;
|
| 256 |
char cc_op_name[32]; |
| 257 |
static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; |
| 258 |
|
| 259 |
cpu_synchronize_state(env); |
| 260 |
|
| 261 |
eflags = env->eflags; |
| 262 |
#ifdef TARGET_X86_64
|
| 263 |
if (env->hflags & HF_CS64_MASK) {
|
| 264 |
cpu_fprintf(f, |
| 265 |
"RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" |
| 266 |
"RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" |
| 267 |
"R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" |
| 268 |
"R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" |
| 269 |
"RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
| 270 |
env->regs[R_EAX], |
| 271 |
env->regs[R_EBX], |
| 272 |
env->regs[R_ECX], |
| 273 |
env->regs[R_EDX], |
| 274 |
env->regs[R_ESI], |
| 275 |
env->regs[R_EDI], |
| 276 |
env->regs[R_EBP], |
| 277 |
env->regs[R_ESP], |
| 278 |
env->regs[8],
|
| 279 |
env->regs[9],
|
| 280 |
env->regs[10],
|
| 281 |
env->regs[11],
|
| 282 |
env->regs[12],
|
| 283 |
env->regs[13],
|
| 284 |
env->regs[14],
|
| 285 |
env->regs[15],
|
| 286 |
env->eip, eflags, |
| 287 |
eflags & DF_MASK ? 'D' : '-', |
| 288 |
eflags & CC_O ? 'O' : '-', |
| 289 |
eflags & CC_S ? 'S' : '-', |
| 290 |
eflags & CC_Z ? 'Z' : '-', |
| 291 |
eflags & CC_A ? 'A' : '-', |
| 292 |
eflags & CC_P ? 'P' : '-', |
| 293 |
eflags & CC_C ? 'C' : '-', |
| 294 |
env->hflags & HF_CPL_MASK, |
| 295 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 296 |
(env->a20_mask >> 20) & 1, |
| 297 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 298 |
env->halted); |
| 299 |
} else
|
| 300 |
#endif
|
| 301 |
{
|
| 302 |
cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
|
| 303 |
"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
|
| 304 |
"EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
|
| 305 |
(uint32_t)env->regs[R_EAX], |
| 306 |
(uint32_t)env->regs[R_EBX], |
| 307 |
(uint32_t)env->regs[R_ECX], |
| 308 |
(uint32_t)env->regs[R_EDX], |
| 309 |
(uint32_t)env->regs[R_ESI], |
| 310 |
(uint32_t)env->regs[R_EDI], |
| 311 |
(uint32_t)env->regs[R_EBP], |
| 312 |
(uint32_t)env->regs[R_ESP], |
| 313 |
(uint32_t)env->eip, eflags, |
| 314 |
eflags & DF_MASK ? 'D' : '-', |
| 315 |
eflags & CC_O ? 'O' : '-', |
| 316 |
eflags & CC_S ? 'S' : '-', |
| 317 |
eflags & CC_Z ? 'Z' : '-', |
| 318 |
eflags & CC_A ? 'A' : '-', |
| 319 |
eflags & CC_P ? 'P' : '-', |
| 320 |
eflags & CC_C ? 'C' : '-', |
| 321 |
env->hflags & HF_CPL_MASK, |
| 322 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 323 |
(env->a20_mask >> 20) & 1, |
| 324 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 325 |
env->halted); |
| 326 |
} |
| 327 |
|
| 328 |
for(i = 0; i < 6; i++) { |
| 329 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i], |
| 330 |
&env->segs[i]); |
| 331 |
} |
| 332 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
|
| 333 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
|
| 334 |
|
| 335 |
#ifdef TARGET_X86_64
|
| 336 |
if (env->hflags & HF_LMA_MASK) {
|
| 337 |
cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
| 338 |
env->gdt.base, env->gdt.limit); |
| 339 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
| 340 |
env->idt.base, env->idt.limit); |
| 341 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
| 342 |
(uint32_t)env->cr[0],
|
| 343 |
env->cr[2],
|
| 344 |
env->cr[3],
|
| 345 |
(uint32_t)env->cr[4]);
|
| 346 |
for(i = 0; i < 4; i++) |
| 347 |
cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
| 348 |
cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
| 349 |
env->dr[6], env->dr[7]); |
| 350 |
} else
|
| 351 |
#endif
|
| 352 |
{
|
| 353 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
| 354 |
(uint32_t)env->gdt.base, env->gdt.limit); |
| 355 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
| 356 |
(uint32_t)env->idt.base, env->idt.limit); |
| 357 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
| 358 |
(uint32_t)env->cr[0],
|
| 359 |
(uint32_t)env->cr[2],
|
| 360 |
(uint32_t)env->cr[3],
|
| 361 |
(uint32_t)env->cr[4]);
|
| 362 |
for(i = 0; i < 4; i++) { |
| 363 |
cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]); |
| 364 |
} |
| 365 |
cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n", |
| 366 |
env->dr[6], env->dr[7]); |
| 367 |
} |
| 368 |
if (flags & X86_DUMP_CCOP) {
|
| 369 |
if ((unsigned)env->cc_op < CC_OP_NB) |
| 370 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
| 371 |
else
|
| 372 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
| 373 |
#ifdef TARGET_X86_64
|
| 374 |
if (env->hflags & HF_CS64_MASK) {
|
| 375 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
| 376 |
env->cc_src, env->cc_dst, |
| 377 |
cc_op_name); |
| 378 |
} else
|
| 379 |
#endif
|
| 380 |
{
|
| 381 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
| 382 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
| 383 |
cc_op_name); |
| 384 |
} |
| 385 |
} |
| 386 |
cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer); |
| 387 |
if (flags & X86_DUMP_FPU) {
|
| 388 |
int fptag;
|
| 389 |
fptag = 0;
|
| 390 |
for(i = 0; i < 8; i++) { |
| 391 |
fptag |= ((!env->fptags[i]) << i); |
| 392 |
} |
| 393 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
| 394 |
env->fpuc, |
| 395 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
| 396 |
env->fpstt, |
| 397 |
fptag, |
| 398 |
env->mxcsr); |
| 399 |
for(i=0;i<8;i++) { |
| 400 |
#if defined(USE_X86LDOUBLE)
|
| 401 |
union {
|
| 402 |
long double d; |
| 403 |
struct {
|
| 404 |
uint64_t lower; |
| 405 |
uint16_t upper; |
| 406 |
} l; |
| 407 |
} tmp; |
| 408 |
tmp.d = env->fpregs[i].d; |
| 409 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
| 410 |
i, tmp.l.lower, tmp.l.upper); |
| 411 |
#else
|
| 412 |
cpu_fprintf(f, "FPR%d=%016" PRIx64,
|
| 413 |
i, env->fpregs[i].mmx.q); |
| 414 |
#endif
|
| 415 |
if ((i & 1) == 1) |
| 416 |
cpu_fprintf(f, "\n");
|
| 417 |
else
|
| 418 |
cpu_fprintf(f, " ");
|
| 419 |
} |
| 420 |
if (env->hflags & HF_CS64_MASK)
|
| 421 |
nb = 16;
|
| 422 |
else
|
| 423 |
nb = 8;
|
| 424 |
for(i=0;i<nb;i++) { |
| 425 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
| 426 |
i, |
| 427 |
env->xmm_regs[i].XMM_L(3),
|
| 428 |
env->xmm_regs[i].XMM_L(2),
|
| 429 |
env->xmm_regs[i].XMM_L(1),
|
| 430 |
env->xmm_regs[i].XMM_L(0));
|
| 431 |
if ((i & 1) == 1) |
| 432 |
cpu_fprintf(f, "\n");
|
| 433 |
else
|
| 434 |
cpu_fprintf(f, " ");
|
| 435 |
} |
| 436 |
} |
| 437 |
} |
| 438 |
|
| 439 |
/***********************************************************/
|
| 440 |
/* x86 mmu */
|
| 441 |
/* XXX: add PGE support */
|
| 442 |
|
| 443 |
void cpu_x86_set_a20(CPUX86State *env, int a20_state) |
| 444 |
{
|
| 445 |
a20_state = (a20_state != 0);
|
| 446 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
| 447 |
#if defined(DEBUG_MMU)
|
| 448 |
printf("A20 update: a20=%d\n", a20_state);
|
| 449 |
#endif
|
| 450 |
/* if the cpu is currently executing code, we must unlink it and
|
| 451 |
all the potentially executing TB */
|
| 452 |
cpu_interrupt(env, CPU_INTERRUPT_EXITTB); |
| 453 |
|
| 454 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
| 455 |
we must flush everything */
|
| 456 |
tlb_flush(env, 1);
|
| 457 |
env->a20_mask = ~(1 << 20) | (a20_state << 20); |
| 458 |
} |
| 459 |
} |
| 460 |
|
| 461 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
| 462 |
{
|
| 463 |
int pe_state;
|
| 464 |
|
| 465 |
#if defined(DEBUG_MMU)
|
| 466 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
| 467 |
#endif
|
| 468 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
| 469 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
| 470 |
tlb_flush(env, 1);
|
| 471 |
} |
| 472 |
|
| 473 |
#ifdef TARGET_X86_64
|
| 474 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
| 475 |
(env->efer & MSR_EFER_LME)) {
|
| 476 |
/* enter in long mode */
|
| 477 |
/* XXX: generate an exception */
|
| 478 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
| 479 |
return;
|
| 480 |
env->efer |= MSR_EFER_LMA; |
| 481 |
env->hflags |= HF_LMA_MASK; |
| 482 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
| 483 |
(env->efer & MSR_EFER_LMA)) {
|
| 484 |
/* exit long mode */
|
| 485 |
env->efer &= ~MSR_EFER_LMA; |
| 486 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
| 487 |
env->eip &= 0xffffffff;
|
| 488 |
} |
| 489 |
#endif
|
| 490 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
| 491 |
|
| 492 |
/* update PE flag in hidden flags */
|
| 493 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
| 494 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
| 495 |
/* ensure that ADDSEG is always set in real mode */
|
| 496 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
| 497 |
/* update FPU flags */
|
| 498 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
| 499 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
| 500 |
} |
| 501 |
|
| 502 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
| 503 |
the PDPT */
|
| 504 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
| 505 |
{
|
| 506 |
env->cr[3] = new_cr3;
|
| 507 |
if (env->cr[0] & CR0_PG_MASK) { |
| 508 |
#if defined(DEBUG_MMU)
|
| 509 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
| 510 |
#endif
|
| 511 |
tlb_flush(env, 0);
|
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
| 516 |
{
|
| 517 |
#if defined(DEBUG_MMU)
|
| 518 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
| 519 |
#endif
|
| 520 |
if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
|
| 521 |
(env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
|
| 522 |
tlb_flush(env, 1);
|
| 523 |
} |
| 524 |
/* SSE handling */
|
| 525 |
if (!(env->cpuid_features & CPUID_SSE))
|
| 526 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
| 527 |
if (new_cr4 & CR4_OSFXSR_MASK)
|
| 528 |
env->hflags |= HF_OSFXSR_MASK; |
| 529 |
else
|
| 530 |
env->hflags &= ~HF_OSFXSR_MASK; |
| 531 |
|
| 532 |
env->cr[4] = new_cr4;
|
| 533 |
} |
| 534 |
|
| 535 |
#if defined(CONFIG_USER_ONLY)
|
| 536 |
|
| 537 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 538 |
int is_write, int mmu_idx, int is_softmmu) |
| 539 |
{
|
| 540 |
/* user mode only emulation */
|
| 541 |
is_write &= 1;
|
| 542 |
env->cr[2] = addr;
|
| 543 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
| 544 |
env->error_code |= PG_ERROR_U_MASK; |
| 545 |
env->exception_index = EXCP0E_PAGE; |
| 546 |
return 1; |
| 547 |
} |
| 548 |
|
| 549 |
#else
|
| 550 |
|
| 551 |
/* XXX: This value should match the one returned by CPUID
|
| 552 |
* and in exec.c */
|
| 553 |
# if defined(TARGET_X86_64)
|
| 554 |
# define PHYS_ADDR_MASK 0xfffffff000LL |
| 555 |
# else
|
| 556 |
# define PHYS_ADDR_MASK 0xffffff000LL |
| 557 |
# endif
|
| 558 |
|
| 559 |
/* return value:
|
| 560 |
-1 = cannot handle fault
|
| 561 |
0 = nothing more to do
|
| 562 |
1 = generate PF fault
|
| 563 |
*/
|
| 564 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 565 |
int is_write1, int mmu_idx, int is_softmmu) |
| 566 |
{
|
| 567 |
uint64_t ptep, pte; |
| 568 |
target_ulong pde_addr, pte_addr; |
| 569 |
int error_code, is_dirty, prot, page_size, is_write, is_user;
|
| 570 |
target_phys_addr_t paddr; |
| 571 |
uint32_t page_offset; |
| 572 |
target_ulong vaddr, virt_addr; |
| 573 |
|
| 574 |
is_user = mmu_idx == MMU_USER_IDX; |
| 575 |
#if defined(DEBUG_MMU)
|
| 576 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
| 577 |
addr, is_write1, is_user, env->eip); |
| 578 |
#endif
|
| 579 |
is_write = is_write1 & 1;
|
| 580 |
|
| 581 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 582 |
pte = addr; |
| 583 |
virt_addr = addr & TARGET_PAGE_MASK; |
| 584 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 585 |
page_size = 4096;
|
| 586 |
goto do_mapping;
|
| 587 |
} |
| 588 |
|
| 589 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 590 |
uint64_t pde, pdpe; |
| 591 |
target_ulong pdpe_addr; |
| 592 |
|
| 593 |
#ifdef TARGET_X86_64
|
| 594 |
if (env->hflags & HF_LMA_MASK) {
|
| 595 |
uint64_t pml4e_addr, pml4e; |
| 596 |
int32_t sext; |
| 597 |
|
| 598 |
/* test virtual address sign extension */
|
| 599 |
sext = (int64_t)addr >> 47;
|
| 600 |
if (sext != 0 && sext != -1) { |
| 601 |
env->error_code = 0;
|
| 602 |
env->exception_index = EXCP0D_GPF; |
| 603 |
return 1; |
| 604 |
} |
| 605 |
|
| 606 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 607 |
env->a20_mask; |
| 608 |
pml4e = ldq_phys(pml4e_addr); |
| 609 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
| 610 |
error_code = 0;
|
| 611 |
goto do_fault;
|
| 612 |
} |
| 613 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
| 614 |
error_code = PG_ERROR_RSVD_MASK; |
| 615 |
goto do_fault;
|
| 616 |
} |
| 617 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
| 618 |
pml4e |= PG_ACCESSED_MASK; |
| 619 |
stl_phys_notdirty(pml4e_addr, pml4e); |
| 620 |
} |
| 621 |
ptep = pml4e ^ PG_NX_MASK; |
| 622 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
| 623 |
env->a20_mask; |
| 624 |
pdpe = ldq_phys(pdpe_addr); |
| 625 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 626 |
error_code = 0;
|
| 627 |
goto do_fault;
|
| 628 |
} |
| 629 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
| 630 |
error_code = PG_ERROR_RSVD_MASK; |
| 631 |
goto do_fault;
|
| 632 |
} |
| 633 |
ptep &= pdpe ^ PG_NX_MASK; |
| 634 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
| 635 |
pdpe |= PG_ACCESSED_MASK; |
| 636 |
stl_phys_notdirty(pdpe_addr, pdpe); |
| 637 |
} |
| 638 |
} else
|
| 639 |
#endif
|
| 640 |
{
|
| 641 |
/* XXX: load them when cr3 is loaded ? */
|
| 642 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 643 |
env->a20_mask; |
| 644 |
pdpe = ldq_phys(pdpe_addr); |
| 645 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 646 |
error_code = 0;
|
| 647 |
goto do_fault;
|
| 648 |
} |
| 649 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| 650 |
} |
| 651 |
|
| 652 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
| 653 |
env->a20_mask; |
| 654 |
pde = ldq_phys(pde_addr); |
| 655 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 656 |
error_code = 0;
|
| 657 |
goto do_fault;
|
| 658 |
} |
| 659 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
| 660 |
error_code = PG_ERROR_RSVD_MASK; |
| 661 |
goto do_fault;
|
| 662 |
} |
| 663 |
ptep &= pde ^ PG_NX_MASK; |
| 664 |
if (pde & PG_PSE_MASK) {
|
| 665 |
/* 2 MB page */
|
| 666 |
page_size = 2048 * 1024; |
| 667 |
ptep ^= PG_NX_MASK; |
| 668 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 669 |
goto do_fault_protect;
|
| 670 |
if (is_user) {
|
| 671 |
if (!(ptep & PG_USER_MASK))
|
| 672 |
goto do_fault_protect;
|
| 673 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 674 |
goto do_fault_protect;
|
| 675 |
} else {
|
| 676 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 677 |
is_write && !(ptep & PG_RW_MASK)) |
| 678 |
goto do_fault_protect;
|
| 679 |
} |
| 680 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 681 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 682 |
pde |= PG_ACCESSED_MASK; |
| 683 |
if (is_dirty)
|
| 684 |
pde |= PG_DIRTY_MASK; |
| 685 |
stl_phys_notdirty(pde_addr, pde); |
| 686 |
} |
| 687 |
/* align to page_size */
|
| 688 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
| 689 |
virt_addr = addr & ~(page_size - 1);
|
| 690 |
} else {
|
| 691 |
/* 4 KB page */
|
| 692 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 693 |
pde |= PG_ACCESSED_MASK; |
| 694 |
stl_phys_notdirty(pde_addr, pde); |
| 695 |
} |
| 696 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
| 697 |
env->a20_mask; |
| 698 |
pte = ldq_phys(pte_addr); |
| 699 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 700 |
error_code = 0;
|
| 701 |
goto do_fault;
|
| 702 |
} |
| 703 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
| 704 |
error_code = PG_ERROR_RSVD_MASK; |
| 705 |
goto do_fault;
|
| 706 |
} |
| 707 |
/* combine pde and pte nx, user and rw protections */
|
| 708 |
ptep &= pte ^ PG_NX_MASK; |
| 709 |
ptep ^= PG_NX_MASK; |
| 710 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 711 |
goto do_fault_protect;
|
| 712 |
if (is_user) {
|
| 713 |
if (!(ptep & PG_USER_MASK))
|
| 714 |
goto do_fault_protect;
|
| 715 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 716 |
goto do_fault_protect;
|
| 717 |
} else {
|
| 718 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 719 |
is_write && !(ptep & PG_RW_MASK)) |
| 720 |
goto do_fault_protect;
|
| 721 |
} |
| 722 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 723 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 724 |
pte |= PG_ACCESSED_MASK; |
| 725 |
if (is_dirty)
|
| 726 |
pte |= PG_DIRTY_MASK; |
| 727 |
stl_phys_notdirty(pte_addr, pte); |
| 728 |
} |
| 729 |
page_size = 4096;
|
| 730 |
virt_addr = addr & ~0xfff;
|
| 731 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
| 732 |
} |
| 733 |
} else {
|
| 734 |
uint32_t pde; |
| 735 |
|
| 736 |
/* page directory entry */
|
| 737 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
| 738 |
env->a20_mask; |
| 739 |
pde = ldl_phys(pde_addr); |
| 740 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 741 |
error_code = 0;
|
| 742 |
goto do_fault;
|
| 743 |
} |
| 744 |
/* if PSE bit is set, then we use a 4MB page */
|
| 745 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 746 |
page_size = 4096 * 1024; |
| 747 |
if (is_user) {
|
| 748 |
if (!(pde & PG_USER_MASK))
|
| 749 |
goto do_fault_protect;
|
| 750 |
if (is_write && !(pde & PG_RW_MASK))
|
| 751 |
goto do_fault_protect;
|
| 752 |
} else {
|
| 753 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 754 |
is_write && !(pde & PG_RW_MASK)) |
| 755 |
goto do_fault_protect;
|
| 756 |
} |
| 757 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 758 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 759 |
pde |= PG_ACCESSED_MASK; |
| 760 |
if (is_dirty)
|
| 761 |
pde |= PG_DIRTY_MASK; |
| 762 |
stl_phys_notdirty(pde_addr, pde); |
| 763 |
} |
| 764 |
|
| 765 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 766 |
ptep = pte; |
| 767 |
virt_addr = addr & ~(page_size - 1);
|
| 768 |
} else {
|
| 769 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 770 |
pde |= PG_ACCESSED_MASK; |
| 771 |
stl_phys_notdirty(pde_addr, pde); |
| 772 |
} |
| 773 |
|
| 774 |
/* page directory entry */
|
| 775 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
| 776 |
env->a20_mask; |
| 777 |
pte = ldl_phys(pte_addr); |
| 778 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 779 |
error_code = 0;
|
| 780 |
goto do_fault;
|
| 781 |
} |
| 782 |
/* combine pde and pte user and rw protections */
|
| 783 |
ptep = pte & pde; |
| 784 |
if (is_user) {
|
| 785 |
if (!(ptep & PG_USER_MASK))
|
| 786 |
goto do_fault_protect;
|
| 787 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 788 |
goto do_fault_protect;
|
| 789 |
} else {
|
| 790 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 791 |
is_write && !(ptep & PG_RW_MASK)) |
| 792 |
goto do_fault_protect;
|
| 793 |
} |
| 794 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 795 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 796 |
pte |= PG_ACCESSED_MASK; |
| 797 |
if (is_dirty)
|
| 798 |
pte |= PG_DIRTY_MASK; |
| 799 |
stl_phys_notdirty(pte_addr, pte); |
| 800 |
} |
| 801 |
page_size = 4096;
|
| 802 |
virt_addr = addr & ~0xfff;
|
| 803 |
} |
| 804 |
} |
| 805 |
/* the page can be put in the TLB */
|
| 806 |
prot = PAGE_READ; |
| 807 |
if (!(ptep & PG_NX_MASK))
|
| 808 |
prot |= PAGE_EXEC; |
| 809 |
if (pte & PG_DIRTY_MASK) {
|
| 810 |
/* only set write access if already dirty... otherwise wait
|
| 811 |
for dirty access */
|
| 812 |
if (is_user) {
|
| 813 |
if (ptep & PG_RW_MASK)
|
| 814 |
prot |= PAGE_WRITE; |
| 815 |
} else {
|
| 816 |
if (!(env->cr[0] & CR0_WP_MASK) || |
| 817 |
(ptep & PG_RW_MASK)) |
| 818 |
prot |= PAGE_WRITE; |
| 819 |
} |
| 820 |
} |
| 821 |
do_mapping:
|
| 822 |
pte = pte & env->a20_mask; |
| 823 |
|
| 824 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
| 825 |
avoid filling it too fast */
|
| 826 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 827 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 828 |
vaddr = virt_addr + page_offset; |
| 829 |
|
| 830 |
tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size); |
| 831 |
return 0; |
| 832 |
do_fault_protect:
|
| 833 |
error_code = PG_ERROR_P_MASK; |
| 834 |
do_fault:
|
| 835 |
error_code |= (is_write << PG_ERROR_W_BIT); |
| 836 |
if (is_user)
|
| 837 |
error_code |= PG_ERROR_U_MASK; |
| 838 |
if (is_write1 == 2 && |
| 839 |
(env->efer & MSR_EFER_NXE) && |
| 840 |
(env->cr[4] & CR4_PAE_MASK))
|
| 841 |
error_code |= PG_ERROR_I_D_MASK; |
| 842 |
if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
| 843 |
/* cr2 is not modified in case of exceptions */
|
| 844 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
| 845 |
addr); |
| 846 |
} else {
|
| 847 |
env->cr[2] = addr;
|
| 848 |
} |
| 849 |
env->error_code = error_code; |
| 850 |
env->exception_index = EXCP0E_PAGE; |
| 851 |
return 1; |
| 852 |
} |
| 853 |
|
| 854 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 855 |
{
|
| 856 |
target_ulong pde_addr, pte_addr; |
| 857 |
uint64_t pte; |
| 858 |
target_phys_addr_t paddr; |
| 859 |
uint32_t page_offset; |
| 860 |
int page_size;
|
| 861 |
|
| 862 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 863 |
target_ulong pdpe_addr; |
| 864 |
uint64_t pde, pdpe; |
| 865 |
|
| 866 |
#ifdef TARGET_X86_64
|
| 867 |
if (env->hflags & HF_LMA_MASK) {
|
| 868 |
uint64_t pml4e_addr, pml4e; |
| 869 |
int32_t sext; |
| 870 |
|
| 871 |
/* test virtual address sign extension */
|
| 872 |
sext = (int64_t)addr >> 47;
|
| 873 |
if (sext != 0 && sext != -1) |
| 874 |
return -1; |
| 875 |
|
| 876 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 877 |
env->a20_mask; |
| 878 |
pml4e = ldq_phys(pml4e_addr); |
| 879 |
if (!(pml4e & PG_PRESENT_MASK))
|
| 880 |
return -1; |
| 881 |
|
| 882 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
| 883 |
env->a20_mask; |
| 884 |
pdpe = ldq_phys(pdpe_addr); |
| 885 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 886 |
return -1; |
| 887 |
} else
|
| 888 |
#endif
|
| 889 |
{
|
| 890 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 891 |
env->a20_mask; |
| 892 |
pdpe = ldq_phys(pdpe_addr); |
| 893 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 894 |
return -1; |
| 895 |
} |
| 896 |
|
| 897 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
| 898 |
env->a20_mask; |
| 899 |
pde = ldq_phys(pde_addr); |
| 900 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 901 |
return -1; |
| 902 |
} |
| 903 |
if (pde & PG_PSE_MASK) {
|
| 904 |
/* 2 MB page */
|
| 905 |
page_size = 2048 * 1024; |
| 906 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 907 |
} else {
|
| 908 |
/* 4 KB page */
|
| 909 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
| 910 |
env->a20_mask; |
| 911 |
page_size = 4096;
|
| 912 |
pte = ldq_phys(pte_addr); |
| 913 |
} |
| 914 |
if (!(pte & PG_PRESENT_MASK))
|
| 915 |
return -1; |
| 916 |
} else {
|
| 917 |
uint32_t pde; |
| 918 |
|
| 919 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 920 |
pte = addr; |
| 921 |
page_size = 4096;
|
| 922 |
} else {
|
| 923 |
/* page directory entry */
|
| 924 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
| 925 |
pde = ldl_phys(pde_addr); |
| 926 |
if (!(pde & PG_PRESENT_MASK))
|
| 927 |
return -1; |
| 928 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 929 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
| 930 |
page_size = 4096 * 1024; |
| 931 |
} else {
|
| 932 |
/* page directory entry */
|
| 933 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
| 934 |
pte = ldl_phys(pte_addr); |
| 935 |
if (!(pte & PG_PRESENT_MASK))
|
| 936 |
return -1; |
| 937 |
page_size = 4096;
|
| 938 |
} |
| 939 |
} |
| 940 |
pte = pte & env->a20_mask; |
| 941 |
} |
| 942 |
|
| 943 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 944 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 945 |
return paddr;
|
| 946 |
} |
| 947 |
|
| 948 |
void hw_breakpoint_insert(CPUState *env, int index) |
| 949 |
{
|
| 950 |
int type, err = 0; |
| 951 |
|
| 952 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 953 |
case 0: |
| 954 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
| 955 |
err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU, |
| 956 |
&env->cpu_breakpoint[index]); |
| 957 |
break;
|
| 958 |
case 1: |
| 959 |
type = BP_CPU | BP_MEM_WRITE; |
| 960 |
goto insert_wp;
|
| 961 |
case 2: |
| 962 |
/* No support for I/O watchpoints yet */
|
| 963 |
break;
|
| 964 |
case 3: |
| 965 |
type = BP_CPU | BP_MEM_ACCESS; |
| 966 |
insert_wp:
|
| 967 |
err = cpu_watchpoint_insert(env, env->dr[index], |
| 968 |
hw_breakpoint_len(env->dr[7], index),
|
| 969 |
type, &env->cpu_watchpoint[index]); |
| 970 |
break;
|
| 971 |
} |
| 972 |
if (err)
|
| 973 |
env->cpu_breakpoint[index] = NULL;
|
| 974 |
} |
| 975 |
|
| 976 |
void hw_breakpoint_remove(CPUState *env, int index) |
| 977 |
{
|
| 978 |
if (!env->cpu_breakpoint[index])
|
| 979 |
return;
|
| 980 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 981 |
case 0: |
| 982 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
| 983 |
cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]); |
| 984 |
break;
|
| 985 |
case 1: |
| 986 |
case 3: |
| 987 |
cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]); |
| 988 |
break;
|
| 989 |
case 2: |
| 990 |
/* No support for I/O watchpoints yet */
|
| 991 |
break;
|
| 992 |
} |
| 993 |
} |
| 994 |
|
| 995 |
int check_hw_breakpoints(CPUState *env, int force_dr6_update) |
| 996 |
{
|
| 997 |
target_ulong dr6; |
| 998 |
int reg, type;
|
| 999 |
int hit_enabled = 0; |
| 1000 |
|
| 1001 |
dr6 = env->dr[6] & ~0xf; |
| 1002 |
for (reg = 0; reg < 4; reg++) { |
| 1003 |
type = hw_breakpoint_type(env->dr[7], reg);
|
| 1004 |
if ((type == 0 && env->dr[reg] == env->eip) || |
| 1005 |
((type & 1) && env->cpu_watchpoint[reg] &&
|
| 1006 |
(env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
|
| 1007 |
dr6 |= 1 << reg;
|
| 1008 |
if (hw_breakpoint_enabled(env->dr[7], reg)) |
| 1009 |
hit_enabled = 1;
|
| 1010 |
} |
| 1011 |
} |
| 1012 |
if (hit_enabled || force_dr6_update)
|
| 1013 |
env->dr[6] = dr6;
|
| 1014 |
return hit_enabled;
|
| 1015 |
} |
| 1016 |
|
| 1017 |
static CPUDebugExcpHandler *prev_debug_excp_handler;
|
| 1018 |
|
| 1019 |
void raise_exception_env(int exception_index, CPUState *env); |
| 1020 |
|
| 1021 |
static void breakpoint_handler(CPUState *env) |
| 1022 |
{
|
| 1023 |
CPUBreakpoint *bp; |
| 1024 |
|
| 1025 |
if (env->watchpoint_hit) {
|
| 1026 |
if (env->watchpoint_hit->flags & BP_CPU) {
|
| 1027 |
env->watchpoint_hit = NULL;
|
| 1028 |
if (check_hw_breakpoints(env, 0)) |
| 1029 |
raise_exception_env(EXCP01_DB, env); |
| 1030 |
else
|
| 1031 |
cpu_resume_from_signal(env, NULL);
|
| 1032 |
} |
| 1033 |
} else {
|
| 1034 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) |
| 1035 |
if (bp->pc == env->eip) {
|
| 1036 |
if (bp->flags & BP_CPU) {
|
| 1037 |
check_hw_breakpoints(env, 1);
|
| 1038 |
raise_exception_env(EXCP01_DB, env); |
| 1039 |
} |
| 1040 |
break;
|
| 1041 |
} |
| 1042 |
} |
| 1043 |
if (prev_debug_excp_handler)
|
| 1044 |
prev_debug_excp_handler(env); |
| 1045 |
} |
| 1046 |
|
| 1047 |
/* This should come from sysemu.h - if we could include it here... */
|
| 1048 |
void qemu_system_reset_request(void); |
| 1049 |
|
| 1050 |
static void qemu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, |
| 1051 |
uint64_t mcg_status, uint64_t addr, uint64_t misc) |
| 1052 |
{
|
| 1053 |
uint64_t mcg_cap = cenv->mcg_cap; |
| 1054 |
uint64_t *banks = cenv->mce_banks; |
| 1055 |
|
| 1056 |
/*
|
| 1057 |
* if MSR_MCG_CTL is not all 1s, the uncorrected error
|
| 1058 |
* reporting is disabled
|
| 1059 |
*/
|
| 1060 |
if ((status & MCI_STATUS_UC) && (mcg_cap & MCG_CTL_P) &&
|
| 1061 |
cenv->mcg_ctl != ~(uint64_t)0)
|
| 1062 |
return;
|
| 1063 |
banks += 4 * bank;
|
| 1064 |
/*
|
| 1065 |
* if MSR_MCi_CTL is not all 1s, the uncorrected error
|
| 1066 |
* reporting is disabled for the bank
|
| 1067 |
*/
|
| 1068 |
if ((status & MCI_STATUS_UC) && banks[0] != ~(uint64_t)0) |
| 1069 |
return;
|
| 1070 |
if (status & MCI_STATUS_UC) {
|
| 1071 |
if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
|
| 1072 |
!(cenv->cr[4] & CR4_MCE_MASK)) {
|
| 1073 |
fprintf(stderr, "injects mce exception while previous "
|
| 1074 |
"one is in progress!\n");
|
| 1075 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
| 1076 |
qemu_system_reset_request(); |
| 1077 |
return;
|
| 1078 |
} |
| 1079 |
if (banks[1] & MCI_STATUS_VAL) |
| 1080 |
status |= MCI_STATUS_OVER; |
| 1081 |
banks[2] = addr;
|
| 1082 |
banks[3] = misc;
|
| 1083 |
cenv->mcg_status = mcg_status; |
| 1084 |
banks[1] = status;
|
| 1085 |
cpu_interrupt(cenv, CPU_INTERRUPT_MCE); |
| 1086 |
} else if (!(banks[1] & MCI_STATUS_VAL) |
| 1087 |
|| !(banks[1] & MCI_STATUS_UC)) {
|
| 1088 |
if (banks[1] & MCI_STATUS_VAL) |
| 1089 |
status |= MCI_STATUS_OVER; |
| 1090 |
banks[2] = addr;
|
| 1091 |
banks[3] = misc;
|
| 1092 |
banks[1] = status;
|
| 1093 |
} else
|
| 1094 |
banks[1] |= MCI_STATUS_OVER;
|
| 1095 |
} |
| 1096 |
|
| 1097 |
void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, |
| 1098 |
uint64_t mcg_status, uint64_t addr, uint64_t misc, |
| 1099 |
int broadcast)
|
| 1100 |
{
|
| 1101 |
unsigned bank_num = cenv->mcg_cap & 0xff; |
| 1102 |
CPUState *env; |
| 1103 |
int flag = 0; |
| 1104 |
|
| 1105 |
if (bank >= bank_num || !(status & MCI_STATUS_VAL)) {
|
| 1106 |
return;
|
| 1107 |
} |
| 1108 |
|
| 1109 |
if (broadcast) {
|
| 1110 |
if (!cpu_x86_support_mca_broadcast(cenv)) {
|
| 1111 |
fprintf(stderr, "Current CPU does not support broadcast\n");
|
| 1112 |
return;
|
| 1113 |
} |
| 1114 |
} |
| 1115 |
|
| 1116 |
if (kvm_enabled()) {
|
| 1117 |
if (broadcast) {
|
| 1118 |
flag |= MCE_BROADCAST; |
| 1119 |
} |
| 1120 |
|
| 1121 |
kvm_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc, flag); |
| 1122 |
} else {
|
| 1123 |
qemu_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc); |
| 1124 |
if (broadcast) {
|
| 1125 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1126 |
if (cenv == env) {
|
| 1127 |
continue;
|
| 1128 |
} |
| 1129 |
|
| 1130 |
qemu_inject_x86_mce(env, 1, 0xa000000000000000, 0, 0, 0); |
| 1131 |
} |
| 1132 |
} |
| 1133 |
} |
| 1134 |
} |
| 1135 |
#endif /* !CONFIG_USER_ONLY */ |
| 1136 |
|
| 1137 |
static void mce_init(CPUX86State *cenv) |
| 1138 |
{
|
| 1139 |
unsigned int bank, bank_num; |
| 1140 |
|
| 1141 |
if (((cenv->cpuid_version >> 8)&0xf) >= 6 |
| 1142 |
&& (cenv->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA)) {
|
| 1143 |
cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF; |
| 1144 |
cenv->mcg_ctl = ~(uint64_t)0;
|
| 1145 |
bank_num = MCE_BANKS_DEF; |
| 1146 |
for (bank = 0; bank < bank_num; bank++) |
| 1147 |
cenv->mce_banks[bank*4] = ~(uint64_t)0; |
| 1148 |
} |
| 1149 |
} |
| 1150 |
|
| 1151 |
int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector, |
| 1152 |
target_ulong *base, unsigned int *limit, |
| 1153 |
unsigned int *flags) |
| 1154 |
{
|
| 1155 |
SegmentCache *dt; |
| 1156 |
target_ulong ptr; |
| 1157 |
uint32_t e1, e2; |
| 1158 |
int index;
|
| 1159 |
|
| 1160 |
if (selector & 0x4) |
| 1161 |
dt = &env->ldt; |
| 1162 |
else
|
| 1163 |
dt = &env->gdt; |
| 1164 |
index = selector & ~7;
|
| 1165 |
ptr = dt->base + index; |
| 1166 |
if ((index + 7) > dt->limit |
| 1167 |
|| cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0 |
| 1168 |
|| cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0) |
| 1169 |
return 0; |
| 1170 |
|
| 1171 |
*base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
| 1172 |
*limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
| 1173 |
if (e2 & DESC_G_MASK)
|
| 1174 |
*limit = (*limit << 12) | 0xfff; |
| 1175 |
*flags = e2; |
| 1176 |
|
| 1177 |
return 1; |
| 1178 |
} |
| 1179 |
|
| 1180 |
CPUX86State *cpu_x86_init(const char *cpu_model) |
| 1181 |
{
|
| 1182 |
CPUX86State *env; |
| 1183 |
static int inited; |
| 1184 |
|
| 1185 |
env = qemu_mallocz(sizeof(CPUX86State));
|
| 1186 |
cpu_exec_init(env); |
| 1187 |
env->cpu_model_str = cpu_model; |
| 1188 |
|
| 1189 |
/* init various static tables */
|
| 1190 |
if (!inited) {
|
| 1191 |
inited = 1;
|
| 1192 |
optimize_flags_init(); |
| 1193 |
#ifndef CONFIG_USER_ONLY
|
| 1194 |
prev_debug_excp_handler = |
| 1195 |
cpu_set_debug_excp_handler(breakpoint_handler); |
| 1196 |
#endif
|
| 1197 |
} |
| 1198 |
if (cpu_x86_register(env, cpu_model) < 0) { |
| 1199 |
cpu_x86_close(env); |
| 1200 |
return NULL; |
| 1201 |
} |
| 1202 |
mce_init(env); |
| 1203 |
|
| 1204 |
qemu_init_vcpu(env); |
| 1205 |
|
| 1206 |
return env;
|
| 1207 |
} |
| 1208 |
|
| 1209 |
#if !defined(CONFIG_USER_ONLY)
|
| 1210 |
void do_cpu_init(CPUState *env)
|
| 1211 |
{
|
| 1212 |
int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
|
| 1213 |
cpu_reset(env); |
| 1214 |
env->interrupt_request = sipi; |
| 1215 |
apic_init_reset(env->apic_state); |
| 1216 |
env->halted = !cpu_is_bsp(env); |
| 1217 |
} |
| 1218 |
|
| 1219 |
void do_cpu_sipi(CPUState *env)
|
| 1220 |
{
|
| 1221 |
apic_sipi(env->apic_state); |
| 1222 |
} |
| 1223 |
#else
|
| 1224 |
void do_cpu_init(CPUState *env)
|
| 1225 |
{
|
| 1226 |
} |
| 1227 |
void do_cpu_sipi(CPUState *env)
|
| 1228 |
{
|
| 1229 |
} |
| 1230 |
#endif
|