target-i386/monitor.c

   1 /*
   2  * QEMU monitor
   3  *
   4  * Copyright (c) 2003-2004 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu/osdep.h"
  25 #include "cpu.h"
  26 #include "monitor/monitor.h"
  27 #include "monitor/hmp-target.h"
  28 #include "hw/i386/pc.h"
  29 #include "sysemu/kvm.h"
  30 #include "hmp.h"
  31
  32
  33 static void print_pte(Monitor *mon, hwaddr addr,
  34                       hwaddr pte,
  35                       hwaddr mask)
  36 {
  37 #ifdef TARGET_X86_64
  38     if (addr & (1ULL << 47)) {
  39         addr |= -1LL << 48;
  40     }
  41 #endif
  42     monitor_printf(mon, TARGET_FMT_plx ": " TARGET_FMT_plx
  43                    " %c%c%c%c%c%c%c%c%c\n",
  44                    addr,
  45                    pte & mask,
  46                    pte & PG_NX_MASK ? 'X' : '-',
  47                    pte & PG_GLOBAL_MASK ? 'G' : '-',
  48                    pte & PG_PSE_MASK ? 'P' : '-',
  49                    pte & PG_DIRTY_MASK ? 'D' : '-',
  50                    pte & PG_ACCESSED_MASK ? 'A' : '-',
  51                    pte & PG_PCD_MASK ? 'C' : '-',
  52                    pte & PG_PWT_MASK ? 'T' : '-',
  53                    pte & PG_USER_MASK ? 'U' : '-',
  54                    pte & PG_RW_MASK ? 'W' : '-');
  55 }
  56
  57 static void tlb_info_32(Monitor *mon, CPUArchState *env)
  58 {
  59     unsigned int l1, l2;
  60     uint32_t pgd, pde, pte;
  61
  62     pgd = env->cr[3] & ~0xfff;
  63     for(l1 = 0; l1 < 1024; l1++) {
  64         cpu_physical_memory_read(pgd + l1 * 4, &pde, 4);
  65         pde = le32_to_cpu(pde);
  66         if (pde & PG_PRESENT_MASK) {
  67             if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
  68                 /* 4M pages */
  69                 print_pte(mon, (l1 << 22), pde, ~((1 << 21) - 1));
  70             } else {
  71                 for(l2 = 0; l2 < 1024; l2++) {
  72                     cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4);
  73                     pte = le32_to_cpu(pte);
  74                     if (pte & PG_PRESENT_MASK) {
  75                         print_pte(mon, (l1 << 22) + (l2 << 12),
  76                                   pte & ~PG_PSE_MASK,
  77                                   ~0xfff);
  78                     }
  79                 }
  80             }
  81         }
  82     }
  83 }
  84
  85 static void tlb_info_pae32(Monitor *mon, CPUArchState *env)
  86 {
  87     unsigned int l1, l2, l3;
  88     uint64_t pdpe, pde, pte;
  89     uint64_t pdp_addr, pd_addr, pt_addr;
  90
  91     pdp_addr = env->cr[3] & ~0x1f;
  92     for (l1 = 0; l1 < 4; l1++) {
  93         cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8);
  94         pdpe = le64_to_cpu(pdpe);
  95         if (pdpe & PG_PRESENT_MASK) {
  96             pd_addr = pdpe & 0x3fffffffff000ULL;
  97             for (l2 = 0; l2 < 512; l2++) {
  98                 cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8);
  99                 pde = le64_to_cpu(pde);
 100                 if (pde & PG_PRESENT_MASK) {
 101                     if (pde & PG_PSE_MASK) {
 102                         /* 2M pages with PAE, CR4.PSE is ignored */
 103                         print_pte(mon, (l1 << 30 ) + (l2 << 21), pde,
 104                                   ~((hwaddr)(1 << 20) - 1));
 105                     } else {
 106                         pt_addr = pde & 0x3fffffffff000ULL;
 107                         for (l3 = 0; l3 < 512; l3++) {
 108                             cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8);
 109                             pte = le64_to_cpu(pte);
 110                             if (pte & PG_PRESENT_MASK) {
 111                                 print_pte(mon, (l1 << 30 ) + (l2 << 21)
 112                                           + (l3 << 12),
 113                                           pte & ~PG_PSE_MASK,
 114                                           ~(hwaddr)0xfff);
 115                             }
 116                         }
 117                     }
 118                 }
 119             }
 120         }
 121     }
 122 }
 123
 124 #ifdef TARGET_X86_64
 125 static void tlb_info_64(Monitor *mon, CPUArchState *env)
 126 {
 127     uint64_t l1, l2, l3, l4;
 128     uint64_t pml4e, pdpe, pde, pte;
 129     uint64_t pml4_addr, pdp_addr, pd_addr, pt_addr;
 130
 131     pml4_addr = env->cr[3] & 0x3fffffffff000ULL;
 132     for (l1 = 0; l1 < 512; l1++) {
 133         cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8);
 134         pml4e = le64_to_cpu(pml4e);
 135         if (pml4e & PG_PRESENT_MASK) {
 136             pdp_addr = pml4e & 0x3fffffffff000ULL;
 137             for (l2 = 0; l2 < 512; l2++) {
 138                 cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8);
 139                 pdpe = le64_to_cpu(pdpe);
 140                 if (pdpe & PG_PRESENT_MASK) {
 141                     if (pdpe & PG_PSE_MASK) {
 142                         /* 1G pages, CR4.PSE is ignored */
 143                         print_pte(mon, (l1 << 39) + (l2 << 30), pdpe,
 144                                   0x3ffffc0000000ULL);
 145                     } else {
 146                         pd_addr = pdpe & 0x3fffffffff000ULL;
 147                         for (l3 = 0; l3 < 512; l3++) {
 148                             cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8);
 149                             pde = le64_to_cpu(pde);
 150                             if (pde & PG_PRESENT_MASK) {
 151                                 if (pde & PG_PSE_MASK) {
 152                                     /* 2M pages, CR4.PSE is ignored */
 153                                     print_pte(mon, (l1 << 39) + (l2 << 30) +
 154                                               (l3 << 21), pde,
 155                                               0x3ffffffe00000ULL);
 156                                 } else {
 157                                     pt_addr = pde & 0x3fffffffff000ULL;
 158                                     for (l4 = 0; l4 < 512; l4++) {
 159                                         cpu_physical_memory_read(pt_addr
 160                                                                  + l4 * 8,
 161                                                                  &pte, 8);
 162                                         pte = le64_to_cpu(pte);
 163                                         if (pte & PG_PRESENT_MASK) {
 164                                             print_pte(mon, (l1 << 39) +
 165                                                       (l2 << 30) +
 166                                                       (l3 << 21) + (l4 << 12),
 167                                                       pte & ~PG_PSE_MASK,
 168                                                       0x3fffffffff000ULL);
 169                                         }
 170                                     }
 171                                 }
 172                             }
 173                         }
 174                     }
 175                 }
 176             }
 177         }
 178     }
 179 }
 180 #endif /* TARGET_X86_64 */
 181
 182 void hmp_info_tlb(Monitor *mon, const QDict *qdict)
 183 {
 184     CPUArchState *env;
 185
 186     env = mon_get_cpu_env();
 187
 188     if (!(env->cr[0] & CR0_PG_MASK)) {
 189         monitor_printf(mon, "PG disabled\n");
 190         return;
 191     }
 192     if (env->cr[4] & CR4_PAE_MASK) {
 193 #ifdef TARGET_X86_64
 194         if (env->hflags & HF_LMA_MASK) {
 195             tlb_info_64(mon, env);
 196         } else
 197 #endif
 198         {
 199             tlb_info_pae32(mon, env);
 200         }
 201     } else {
 202         tlb_info_32(mon, env);
 203     }
 204 }
 205
 206 static void mem_print(Monitor *mon, hwaddr *pstart,
 207                       int *plast_prot,
 208                       hwaddr end, int prot)
 209 {
 210     int prot1;
 211     prot1 = *plast_prot;
 212     if (prot != prot1) {
 213         if (*pstart != -1) {
 214             monitor_printf(mon, TARGET_FMT_plx "-" TARGET_FMT_plx " "
 215                            TARGET_FMT_plx " %c%c%c\n",
 216                            *pstart, end, end - *pstart,
 217                            prot1 & PG_USER_MASK ? 'u' : '-',
 218                            'r',
 219                            prot1 & PG_RW_MASK ? 'w' : '-');
 220         }
 221         if (prot != 0)
 222             *pstart = end;
 223         else
 224             *pstart = -1;
 225         *plast_prot = prot;
 226     }
 227 }
 228
 229 static void mem_info_32(Monitor *mon, CPUArchState *env)
 230 {
 231     unsigned int l1, l2;
 232     int prot, last_prot;
 233     uint32_t pgd, pde, pte;
 234     hwaddr start, end;
 235
 236     pgd = env->cr[3] & ~0xfff;
 237     last_prot = 0;
 238     start = -1;
 239     for(l1 = 0; l1 < 1024; l1++) {
 240         cpu_physical_memory_read(pgd + l1 * 4, &pde, 4);
 241         pde = le32_to_cpu(pde);
 242         end = l1 << 22;
 243         if (pde & PG_PRESENT_MASK) {
 244             if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) {
 245                 prot = pde & (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
 246                 mem_print(mon, &start, &last_prot, end, prot);
 247             } else {
 248                 for(l2 = 0; l2 < 1024; l2++) {
 249                     cpu_physical_memory_read((pde & ~0xfff) + l2 * 4, &pte, 4);
 250                     pte = le32_to_cpu(pte);
 251                     end = (l1 << 22) + (l2 << 12);
 252                     if (pte & PG_PRESENT_MASK) {
 253                         prot = pte & pde &
 254                             (PG_USER_MASK | PG_RW_MASK | PG_PRESENT_MASK);
 255                     } else {
 256                         prot = 0;
 257                     }
 258                     mem_print(mon, &start, &last_prot, end, prot);
 259                 }
 260             }
 261         } else {
 262             prot = 0;
 263             mem_print(mon, &start, &last_prot, end, prot);
 264         }
 265     }
 266     /* Flush last range */
 267     mem_print(mon, &start, &last_prot, (hwaddr)1 << 32, 0);
 268 }
 269
 270 static void mem_info_pae32(Monitor *mon, CPUArchState *env)
 271 {
 272     unsigned int l1, l2, l3;
 273     int prot, last_prot;
 274     uint64_t pdpe, pde, pte;
 275     uint64_t pdp_addr, pd_addr, pt_addr;
 276     hwaddr start, end;
 277
 278     pdp_addr = env->cr[3] & ~0x1f;
 279     last_prot = 0;
 280     start = -1;
 281     for (l1 = 0; l1 < 4; l1++) {
 282         cpu_physical_memory_read(pdp_addr + l1 * 8, &pdpe, 8);
 283         pdpe = le64_to_cpu(pdpe);
 284         end = l1 << 30;
 285         if (pdpe & PG_PRESENT_MASK) {
 286             pd_addr = pdpe & 0x3fffffffff000ULL;
 287             for (l2 = 0; l2 < 512; l2++) {
 288                 cpu_physical_memory_read(pd_addr + l2 * 8, &pde, 8);
 289                 pde = le64_to_cpu(pde);
 290                 end = (l1 << 30) + (l2 << 21);
 291                 if (pde & PG_PRESENT_MASK) {
 292                     if (pde & PG_PSE_MASK) {
 293                         prot = pde & (PG_USER_MASK | PG_RW_MASK |
 294                                       PG_PRESENT_MASK);
 295                         mem_print(mon, &start, &last_prot, end, prot);
 296                     } else {
 297                         pt_addr = pde & 0x3fffffffff000ULL;
 298                         for (l3 = 0; l3 < 512; l3++) {
 299                             cpu_physical_memory_read(pt_addr + l3 * 8, &pte, 8);
 300                             pte = le64_to_cpu(pte);
 301                             end = (l1 << 30) + (l2 << 21) + (l3 << 12);
 302                             if (pte & PG_PRESENT_MASK) {
 303                                 prot = pte & pde & (PG_USER_MASK | PG_RW_MASK |
 304                                                     PG_PRESENT_MASK);
 305                             } else {
 306                                 prot = 0;
 307                             }
 308                             mem_print(mon, &start, &last_prot, end, prot);
 309                         }
 310                     }
 311                 } else {
 312                     prot = 0;
 313                     mem_print(mon, &start, &last_prot, end, prot);
 314                 }
 315             }
 316         } else {
 317             prot = 0;
 318             mem_print(mon, &start, &last_prot, end, prot);
 319         }
 320     }
 321     /* Flush last range */
 322     mem_print(mon, &start, &last_prot, (hwaddr)1 << 32, 0);
 323 }
 324
 325
 326 #ifdef TARGET_X86_64
 327 static void mem_info_64(Monitor *mon, CPUArchState *env)
 328 {
 329     int prot, last_prot;
 330     uint64_t l1, l2, l3, l4;
 331     uint64_t pml4e, pdpe, pde, pte;
 332     uint64_t pml4_addr, pdp_addr, pd_addr, pt_addr, start, end;
 333
 334     pml4_addr = env->cr[3] & 0x3fffffffff000ULL;
 335     last_prot = 0;
 336     start = -1;
 337     for (l1 = 0; l1 < 512; l1++) {
 338         cpu_physical_memory_read(pml4_addr + l1 * 8, &pml4e, 8);
 339         pml4e = le64_to_cpu(pml4e);
 340         end = l1 << 39;
 341         if (pml4e & PG_PRESENT_MASK) {
 342             pdp_addr = pml4e & 0x3fffffffff000ULL;
 343             for (l2 = 0; l2 < 512; l2++) {
 344                 cpu_physical_memory_read(pdp_addr + l2 * 8, &pdpe, 8);
 345                 pdpe = le64_to_cpu(pdpe);
 346                 end = (l1 << 39) + (l2 << 30);
 347                 if (pdpe & PG_PRESENT_MASK) {
 348                     if (pdpe & PG_PSE_MASK) {
 349                         prot = pdpe & (PG_USER_MASK | PG_RW_MASK |
 350                                        PG_PRESENT_MASK);
 351                         prot &= pml4e;
 352                         mem_print(mon, &start, &last_prot, end, prot);
 353                     } else {
 354                         pd_addr = pdpe & 0x3fffffffff000ULL;
 355                         for (l3 = 0; l3 < 512; l3++) {
 356                             cpu_physical_memory_read(pd_addr + l3 * 8, &pde, 8);
 357                             pde = le64_to_cpu(pde);
 358                             end = (l1 << 39) + (l2 << 30) + (l3 << 21);
 359                             if (pde & PG_PRESENT_MASK) {
 360                                 if (pde & PG_PSE_MASK) {
 361                                     prot = pde & (PG_USER_MASK | PG_RW_MASK |
 362                                                   PG_PRESENT_MASK);
 363                                     prot &= pml4e & pdpe;
 364                                     mem_print(mon, &start, &last_prot, end, prot);
 365                                 } else {
 366                                     pt_addr = pde & 0x3fffffffff000ULL;
 367                                     for (l4 = 0; l4 < 512; l4++) {
 368                                         cpu_physical_memory_read(pt_addr
 369                                                                  + l4 * 8,
 370                                                                  &pte, 8);
 371                                         pte = le64_to_cpu(pte);
 372                                         end = (l1 << 39) + (l2 << 30) +
 373                                             (l3 << 21) + (l4 << 12);
 374                                         if (pte & PG_PRESENT_MASK) {
 375                                             prot = pte & (PG_USER_MASK | PG_RW_MASK |
 376                                                           PG_PRESENT_MASK);
 377                                             prot &= pml4e & pdpe & pde;
 378                                         } else {
 379                                             prot = 0;
 380                                         }
 381                                         mem_print(mon, &start, &last_prot, end, prot);
 382                                     }
 383                                 }
 384                             } else {
 385                                 prot = 0;
 386                                 mem_print(mon, &start, &last_prot, end, prot);
 387                             }
 388                         }
 389                     }
 390                 } else {
 391                     prot = 0;
 392                     mem_print(mon, &start, &last_prot, end, prot);
 393                 }
 394             }
 395         } else {
 396             prot = 0;
 397             mem_print(mon, &start, &last_prot, end, prot);
 398         }
 399     }
 400     /* Flush last range */
 401     mem_print(mon, &start, &last_prot, (hwaddr)1 << 48, 0);
 402 }
 403 #endif /* TARGET_X86_64 */
 404
 405 void hmp_info_mem(Monitor *mon, const QDict *qdict)
 406 {
 407     CPUArchState *env;
 408
 409     env = mon_get_cpu_env();
 410
 411     if (!(env->cr[0] & CR0_PG_MASK)) {
 412         monitor_printf(mon, "PG disabled\n");
 413         return;
 414     }
 415     if (env->cr[4] & CR4_PAE_MASK) {
 416 #ifdef TARGET_X86_64
 417         if (env->hflags & HF_LMA_MASK) {
 418             mem_info_64(mon, env);
 419         } else
 420 #endif
 421         {
 422             mem_info_pae32(mon, env);
 423         }
 424     } else {
 425         mem_info_32(mon, env);
 426     }
 427 }
 428
 429 void hmp_mce(Monitor *mon, const QDict *qdict)
 430 {
 431     X86CPU *cpu;
 432     CPUState *cs;
 433     int cpu_index = qdict_get_int(qdict, "cpu_index");
 434     int bank = qdict_get_int(qdict, "bank");
 435     uint64_t status = qdict_get_int(qdict, "status");
 436     uint64_t mcg_status = qdict_get_int(qdict, "mcg_status");
 437     uint64_t addr = qdict_get_int(qdict, "addr");
 438     uint64_t misc = qdict_get_int(qdict, "misc");
 439     int flags = MCE_INJECT_UNCOND_AO;
 440
 441     if (qdict_get_try_bool(qdict, "broadcast", false)) {
 442         flags |= MCE_INJECT_BROADCAST;
 443     }
 444     cs = qemu_get_cpu(cpu_index);
 445     if (cs != NULL) {
 446         cpu = X86_CPU(cs);
 447         cpu_x86_inject_mce(mon, cpu, bank, status, mcg_status, addr, misc,
 448                            flags);
 449     }
 450 }
 451
 452 static target_long monitor_get_pc(const struct MonitorDef *md, int val)
 453 {
 454     CPUArchState *env = mon_get_cpu_env();
 455     return env->eip + env->segs[R_CS].base;
 456 }
 457
 458 const MonitorDef monitor_defs[] = {
 459 #define SEG(name, seg) \
 460     { name, offsetof(CPUX86State, segs[seg].selector), NULL, MD_I32 },\
 461     { name ".base", offsetof(CPUX86State, segs[seg].base) },\
 462     { name ".limit", offsetof(CPUX86State, segs[seg].limit), NULL, MD_I32 },
 463
 464     { "eax", offsetof(CPUX86State, regs[0]) },
 465     { "ecx", offsetof(CPUX86State, regs[1]) },
 466     { "edx", offsetof(CPUX86State, regs[2]) },
 467     { "ebx", offsetof(CPUX86State, regs[3]) },
 468     { "esp|sp", offsetof(CPUX86State, regs[4]) },
 469     { "ebp|fp", offsetof(CPUX86State, regs[5]) },
 470     { "esi", offsetof(CPUX86State, regs[6]) },
 471     { "edi", offsetof(CPUX86State, regs[7]) },
 472 #ifdef TARGET_X86_64
 473     { "r8", offsetof(CPUX86State, regs[8]) },
 474     { "r9", offsetof(CPUX86State, regs[9]) },
 475     { "r10", offsetof(CPUX86State, regs[10]) },
 476     { "r11", offsetof(CPUX86State, regs[11]) },
 477     { "r12", offsetof(CPUX86State, regs[12]) },
 478     { "r13", offsetof(CPUX86State, regs[13]) },
 479     { "r14", offsetof(CPUX86State, regs[14]) },
 480     { "r15", offsetof(CPUX86State, regs[15]) },
 481 #endif
 482     { "eflags", offsetof(CPUX86State, eflags) },
 483     { "eip", offsetof(CPUX86State, eip) },
 484     SEG("cs", R_CS)
 485     SEG("ds", R_DS)
 486     SEG("es", R_ES)
 487     SEG("ss", R_SS)
 488     SEG("fs", R_FS)
 489     SEG("gs", R_GS)
 490     { "pc", 0, monitor_get_pc, },
 491     { NULL },
 492 };
 493
 494 const MonitorDef *target_monitor_defs(void)
 495 {
 496     return monitor_defs;
 497 }
 498
 499 void hmp_info_local_apic(Monitor *mon, const QDict *qdict)
 500 {
 501     x86_cpu_dump_local_apic_state(mon_get_cpu(), (FILE *)mon, monitor_fprintf,
 502                                   CPU_DUMP_FPU);
 503 }
 504
 505 void hmp_info_io_apic(Monitor *mon, const QDict *qdict)
 506 {
 507     if (kvm_irqchip_in_kernel()) {
 508         kvm_ioapic_dump_state(mon, qdict);
 509     } else {
 510         ioapic_dump_state(mon, qdict);
 511     }
 512 }