| /* |
| * i386 helpers (without register variable usage) |
| * |
| * Copyright (c) 2003 Fabrice Bellard |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "cpu.h" |
| #include "exec/exec-all.h" |
| #include "sysemu/kvm.h" |
| #include "kvm_i386.h" |
| #ifndef CONFIG_USER_ONLY |
| #include "sysemu/sysemu.h" |
| #include "sysemu/hw_accel.h" |
| #include "monitor/monitor.h" |
| #include "hw/i386/apic_internal.h" |
| #endif |
| |
| static void cpu_x86_version(CPUX86State *env, int *family, int *model) |
| { |
| int cpuver = env->cpuid_version; |
| |
| if (family == NULL || model == NULL) { |
| return; |
| } |
| |
| *family = (cpuver >> 8) & 0x0f; |
| *model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f); |
| } |
| |
| /* Broadcast MCA signal for processor version 06H_EH and above */ |
| int cpu_x86_support_mca_broadcast(CPUX86State *env) |
| { |
| int family = 0; |
| int model = 0; |
| |
| cpu_x86_version(env, &family, &model); |
| if ((family == 6 && model >= 14) || family > 6) { |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| /***********************************************************/ |
| /* x86 debug */ |
| |
| static const char *cc_op_str[CC_OP_NB] = { |
| "DYNAMIC", |
| "EFLAGS", |
| |
| "MULB", |
| "MULW", |
| "MULL", |
| "MULQ", |
| |
| "ADDB", |
| "ADDW", |
| "ADDL", |
| "ADDQ", |
| |
| "ADCB", |
| "ADCW", |
| "ADCL", |
| "ADCQ", |
| |
| "SUBB", |
| "SUBW", |
| "SUBL", |
| "SUBQ", |
| |
| "SBBB", |
| "SBBW", |
| "SBBL", |
| "SBBQ", |
| |
| "LOGICB", |
| "LOGICW", |
| "LOGICL", |
| "LOGICQ", |
| |
| "INCB", |
| "INCW", |
| "INCL", |
| "INCQ", |
| |
| "DECB", |
| "DECW", |
| "DECL", |
| "DECQ", |
| |
| "SHLB", |
| "SHLW", |
| "SHLL", |
| "SHLQ", |
| |
| "SARB", |
| "SARW", |
| "SARL", |
| "SARQ", |
| |
| "BMILGB", |
| "BMILGW", |
| "BMILGL", |
| "BMILGQ", |
| |
| "ADCX", |
| "ADOX", |
| "ADCOX", |
| |
| "CLR", |
| }; |
| |
| static void |
| cpu_x86_dump_seg_cache(CPUX86State *env, FILE *f, fprintf_function cpu_fprintf, |
| const char *name, struct SegmentCache *sc) |
| { |
| #ifdef TARGET_X86_64 |
| if (env->hflags & HF_CS64_MASK) { |
| cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name, |
| sc->selector, sc->base, sc->limit, sc->flags & 0x00ffff00); |
| } else |
| #endif |
| { |
| cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector, |
| (uint32_t)sc->base, sc->limit, sc->flags & 0x00ffff00); |
| } |
| |
| if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK)) |
| goto done; |
| |
| cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT); |
| if (sc->flags & DESC_S_MASK) { |
| if (sc->flags & DESC_CS_MASK) { |
| cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" : |
| ((sc->flags & DESC_B_MASK) ? "CS32" : "CS16")); |
| cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-', |
| (sc->flags & DESC_R_MASK) ? 'R' : '-'); |
| } else { |
| cpu_fprintf(f, |
| (sc->flags & DESC_B_MASK || env->hflags & HF_LMA_MASK) |
| ? "DS " : "DS16"); |
| cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-', |
| (sc->flags & DESC_W_MASK) ? 'W' : '-'); |
| } |
| cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-'); |
| } else { |
| static const char *sys_type_name[2][16] = { |
| { /* 32 bit mode */ |
| "Reserved", "TSS16-avl", "LDT", "TSS16-busy", |
| "CallGate16", "TaskGate", "IntGate16", "TrapGate16", |
| "Reserved", "TSS32-avl", "Reserved", "TSS32-busy", |
| "CallGate32", "Reserved", "IntGate32", "TrapGate32" |
| }, |
| { /* 64 bit mode */ |
| "<hiword>", "Reserved", "LDT", "Reserved", "Reserved", |
| "Reserved", "Reserved", "Reserved", "Reserved", |
| "TSS64-avl", "Reserved", "TSS64-busy", "CallGate64", |
| "Reserved", "IntGate64", "TrapGate64" |
| } |
| }; |
| cpu_fprintf(f, "%s", |
| sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0] |
| [(sc->flags & DESC_TYPE_MASK) |
| >> DESC_TYPE_SHIFT]); |
| } |
| done: |
| cpu_fprintf(f, "\n"); |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| |
| /* ARRAY_SIZE check is not required because |
| * DeliveryMode(dm) has a size of 3 bit. |
| */ |
| static inline const char *dm2str(uint32_t dm) |
| { |
| static const char *str[] = { |
| "Fixed", |
| "...", |
| "SMI", |
| "...", |
| "NMI", |
| "INIT", |
| "...", |
| "ExtINT" |
| }; |
| return str[dm]; |
| } |
| |
| static void dump_apic_lvt(FILE *f, fprintf_function cpu_fprintf, |
| const char *name, uint32_t lvt, bool is_timer) |
| { |
| uint32_t dm = (lvt & APIC_LVT_DELIV_MOD) >> APIC_LVT_DELIV_MOD_SHIFT; |
| cpu_fprintf(f, |
| "%s\t 0x%08x %s %-5s %-6s %-7s %-12s %-6s", |
| name, lvt, |
| lvt & APIC_LVT_INT_POLARITY ? "active-lo" : "active-hi", |
| lvt & APIC_LVT_LEVEL_TRIGGER ? "level" : "edge", |
| lvt & APIC_LVT_MASKED ? "masked" : "", |
| lvt & APIC_LVT_DELIV_STS ? "pending" : "", |
| !is_timer ? |
| "" : lvt & APIC_LVT_TIMER_PERIODIC ? |
| "periodic" : lvt & APIC_LVT_TIMER_TSCDEADLINE ? |
| "tsc-deadline" : "one-shot", |
| dm2str(dm)); |
| if (dm != APIC_DM_NMI) { |
| cpu_fprintf(f, " (vec %u)\n", lvt & APIC_VECTOR_MASK); |
| } else { |
| cpu_fprintf(f, "\n"); |
| } |
| } |
| |
| /* ARRAY_SIZE check is not required because |
| * destination shorthand has a size of 2 bit. |
| */ |
| static inline const char *shorthand2str(uint32_t shorthand) |
| { |
| const char *str[] = { |
| "no-shorthand", "self", "all-self", "all" |
| }; |
| return str[shorthand]; |
| } |
| |
| static inline uint8_t divider_conf(uint32_t divide_conf) |
| { |
| uint8_t divide_val = ((divide_conf & 0x8) >> 1) | (divide_conf & 0x3); |
| |
| return divide_val == 7 ? 1 : 2 << divide_val; |
| } |
| |
| static inline void mask2str(char *str, uint32_t val, uint8_t size) |
| { |
| while (size--) { |
| *str++ = (val >> size) & 1 ? '1' : '0'; |
| } |
| *str = 0; |
| } |
| |
| #define MAX_LOGICAL_APIC_ID_MASK_SIZE 16 |
| |
| static void dump_apic_icr(FILE *f, fprintf_function cpu_fprintf, |
| APICCommonState *s, CPUX86State *env) |
| { |
| uint32_t icr = s->icr[0], icr2 = s->icr[1]; |
| uint8_t dest_shorthand = \ |
| (icr & APIC_ICR_DEST_SHORT) >> APIC_ICR_DEST_SHORT_SHIFT; |
| bool logical_mod = icr & APIC_ICR_DEST_MOD; |
| char apic_id_str[MAX_LOGICAL_APIC_ID_MASK_SIZE + 1]; |
| uint32_t dest_field; |
| bool x2apic; |
| |
| cpu_fprintf(f, "ICR\t 0x%08x %s %s %s %s\n", |
| icr, |
| logical_mod ? "logical" : "physical", |
| icr & APIC_ICR_TRIGGER_MOD ? "level" : "edge", |
| icr & APIC_ICR_LEVEL ? "assert" : "de-assert", |
| shorthand2str(dest_shorthand)); |
| |
| cpu_fprintf(f, "ICR2\t 0x%08x", icr2); |
| if (dest_shorthand != 0) { |
| cpu_fprintf(f, "\n"); |
| return; |
| } |
| x2apic = env->features[FEAT_1_ECX] & CPUID_EXT_X2APIC; |
| dest_field = x2apic ? icr2 : icr2 >> APIC_ICR_DEST_SHIFT; |
| |
| if (!logical_mod) { |
| if (x2apic) { |
| cpu_fprintf(f, " cpu %u (X2APIC ID)\n", dest_field); |
| } else { |
| cpu_fprintf(f, " cpu %u (APIC ID)\n", |
| dest_field & APIC_LOGDEST_XAPIC_ID); |
| } |
| return; |
| } |
| |
| if (s->dest_mode == 0xf) { /* flat mode */ |
| mask2str(apic_id_str, icr2 >> APIC_ICR_DEST_SHIFT, 8); |
| cpu_fprintf(f, " mask %s (APIC ID)\n", apic_id_str); |
| } else if (s->dest_mode == 0) { /* cluster mode */ |
| if (x2apic) { |
| mask2str(apic_id_str, dest_field & APIC_LOGDEST_X2APIC_ID, 16); |
| cpu_fprintf(f, " cluster %u mask %s (X2APIC ID)\n", |
| dest_field >> APIC_LOGDEST_X2APIC_SHIFT, apic_id_str); |
| } else { |
| mask2str(apic_id_str, dest_field & APIC_LOGDEST_XAPIC_ID, 4); |
| cpu_fprintf(f, " cluster %u mask %s (APIC ID)\n", |
| dest_field >> APIC_LOGDEST_XAPIC_SHIFT, apic_id_str); |
| } |
| } |
| } |
| |
| static void dump_apic_interrupt(FILE *f, fprintf_function cpu_fprintf, |
| const char *name, uint32_t *ireg_tab, |
| uint32_t *tmr_tab) |
| { |
| int i, empty = true; |
| |
| cpu_fprintf(f, "%s\t ", name); |
| for (i = 0; i < 256; i++) { |
| if (apic_get_bit(ireg_tab, i)) { |
| cpu_fprintf(f, "%u%s ", i, |
| apic_get_bit(tmr_tab, i) ? "(level)" : ""); |
| empty = false; |
| } |
| } |
| cpu_fprintf(f, "%s\n", empty ? "(none)" : ""); |
| } |
| |
| void x86_cpu_dump_local_apic_state(CPUState *cs, FILE *f, |
| fprintf_function cpu_fprintf, int flags) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| APICCommonState *s = APIC_COMMON(cpu->apic_state); |
| uint32_t *lvt = s->lvt; |
| |
| cpu_fprintf(f, "dumping local APIC state for CPU %-2u\n\n", |
| CPU(cpu)->cpu_index); |
| dump_apic_lvt(f, cpu_fprintf, "LVT0", lvt[APIC_LVT_LINT0], false); |
| dump_apic_lvt(f, cpu_fprintf, "LVT1", lvt[APIC_LVT_LINT1], false); |
| dump_apic_lvt(f, cpu_fprintf, "LVTPC", lvt[APIC_LVT_PERFORM], false); |
| dump_apic_lvt(f, cpu_fprintf, "LVTERR", lvt[APIC_LVT_ERROR], false); |
| dump_apic_lvt(f, cpu_fprintf, "LVTTHMR", lvt[APIC_LVT_THERMAL], false); |
| dump_apic_lvt(f, cpu_fprintf, "LVTT", lvt[APIC_LVT_TIMER], true); |
| |
| cpu_fprintf(f, "Timer\t DCR=0x%x (divide by %u) initial_count = %u\n", |
| s->divide_conf & APIC_DCR_MASK, |
| divider_conf(s->divide_conf), |
| s->initial_count); |
| |
| cpu_fprintf(f, "SPIV\t 0x%08x APIC %s, focus=%s, spurious vec %u\n", |
| s->spurious_vec, |
| s->spurious_vec & APIC_SPURIO_ENABLED ? "enabled" : "disabled", |
| s->spurious_vec & APIC_SPURIO_FOCUS ? "on" : "off", |
| s->spurious_vec & APIC_VECTOR_MASK); |
| |
| dump_apic_icr(f, cpu_fprintf, s, &cpu->env); |
| |
| cpu_fprintf(f, "ESR\t 0x%08x\n", s->esr); |
| |
| dump_apic_interrupt(f, cpu_fprintf, "ISR", s->isr, s->tmr); |
| dump_apic_interrupt(f, cpu_fprintf, "IRR", s->irr, s->tmr); |
| |
| cpu_fprintf(f, "\nAPR 0x%02x TPR 0x%02x DFR 0x%02x LDR 0x%02x", |
| s->arb_id, s->tpr, s->dest_mode, s->log_dest); |
| if (s->dest_mode == 0) { |
| cpu_fprintf(f, "(cluster %u: id %u)", |
| s->log_dest >> APIC_LOGDEST_XAPIC_SHIFT, |
| s->log_dest & APIC_LOGDEST_XAPIC_ID); |
| } |
| cpu_fprintf(f, " PPR 0x%02x\n", apic_get_ppr(s)); |
| } |
| #else |
| void x86_cpu_dump_local_apic_state(CPUState *cs, FILE *f, |
| fprintf_function cpu_fprintf, int flags) |
| { |
| } |
| #endif /* !CONFIG_USER_ONLY */ |
| |
| #define DUMP_CODE_BYTES_TOTAL 50 |
| #define DUMP_CODE_BYTES_BACKWARD 20 |
| |
| void x86_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, |
| int flags) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| int eflags, i, nb; |
| char cc_op_name[32]; |
| static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; |
| |
| eflags = cpu_compute_eflags(env); |
| #ifdef TARGET_X86_64 |
| if (env->hflags & HF_CS64_MASK) { |
| cpu_fprintf(f, |
| "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" |
| "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" |
| "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" |
| "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" |
| "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
| env->regs[R_EAX], |
| env->regs[R_EBX], |
| env->regs[R_ECX], |
| env->regs[R_EDX], |
| env->regs[R_ESI], |
| env->regs[R_EDI], |
| env->regs[R_EBP], |
| env->regs[R_ESP], |
| env->regs[8], |
| env->regs[9], |
| env->regs[10], |
| env->regs[11], |
| env->regs[12], |
| env->regs[13], |
| env->regs[14], |
| env->regs[15], |
| env->eip, eflags, |
| eflags & DF_MASK ? 'D' : '-', |
| eflags & CC_O ? 'O' : '-', |
| eflags & CC_S ? 'S' : '-', |
| eflags & CC_Z ? 'Z' : '-', |
| eflags & CC_A ? 'A' : '-', |
| eflags & CC_P ? 'P' : '-', |
| eflags & CC_C ? 'C' : '-', |
| env->hflags & HF_CPL_MASK, |
| (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1, |
| (env->a20_mask >> 20) & 1, |
| (env->hflags >> HF_SMM_SHIFT) & 1, |
| cs->halted); |
| } else |
| #endif |
| { |
| cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n" |
| "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n" |
| "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
| (uint32_t)env->regs[R_EAX], |
| (uint32_t)env->regs[R_EBX], |
| (uint32_t)env->regs[R_ECX], |
| (uint32_t)env->regs[R_EDX], |
| (uint32_t)env->regs[R_ESI], |
| (uint32_t)env->regs[R_EDI], |
| (uint32_t)env->regs[R_EBP], |
| (uint32_t)env->regs[R_ESP], |
| (uint32_t)env->eip, eflags, |
| eflags & DF_MASK ? 'D' : '-', |
| eflags & CC_O ? 'O' : '-', |
| eflags & CC_S ? 'S' : '-', |
| eflags & CC_Z ? 'Z' : '-', |
| eflags & CC_A ? 'A' : '-', |
| eflags & CC_P ? 'P' : '-', |
| eflags & CC_C ? 'C' : '-', |
| env->hflags & HF_CPL_MASK, |
| (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1, |
| (env->a20_mask >> 20) & 1, |
| (env->hflags >> HF_SMM_SHIFT) & 1, |
| cs->halted); |
| } |
| |
| for(i = 0; i < 6; i++) { |
| cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i], |
| &env->segs[i]); |
| } |
| cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt); |
| cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr); |
| |
| #ifdef TARGET_X86_64 |
| if (env->hflags & HF_LMA_MASK) { |
| cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
| env->gdt.base, env->gdt.limit); |
| cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
| env->idt.base, env->idt.limit); |
| cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
| (uint32_t)env->cr[0], |
| env->cr[2], |
| env->cr[3], |
| (uint32_t)env->cr[4]); |
| for(i = 0; i < 4; i++) |
| cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
| cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
| env->dr[6], env->dr[7]); |
| } else |
| #endif |
| { |
| cpu_fprintf(f, "GDT= %08x %08x\n", |
| (uint32_t)env->gdt.base, env->gdt.limit); |
| cpu_fprintf(f, "IDT= %08x %08x\n", |
| (uint32_t)env->idt.base, env->idt.limit); |
| cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n", |
| (uint32_t)env->cr[0], |
| (uint32_t)env->cr[2], |
| (uint32_t)env->cr[3], |
| (uint32_t)env->cr[4]); |
| for(i = 0; i < 4; i++) { |
| cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]); |
| } |
| cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n", |
| env->dr[6], env->dr[7]); |
| } |
| if (flags & CPU_DUMP_CCOP) { |
| if ((unsigned)env->cc_op < CC_OP_NB) |
| snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
| else |
| snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
| #ifdef TARGET_X86_64 |
| if (env->hflags & HF_CS64_MASK) { |
| cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
| env->cc_src, env->cc_dst, |
| cc_op_name); |
| } else |
| #endif |
| { |
| cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n", |
| (uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
| cc_op_name); |
| } |
| } |
| cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer); |
| if (flags & CPU_DUMP_FPU) { |
| int fptag; |
| fptag = 0; |
| for(i = 0; i < 8; i++) { |
| fptag |= ((!env->fptags[i]) << i); |
| } |
| cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n", |
| env->fpuc, |
| (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
| env->fpstt, |
| fptag, |
| env->mxcsr); |
| for(i=0;i<8;i++) { |
| CPU_LDoubleU u; |
| u.d = env->fpregs[i].d; |
| cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
| i, u.l.lower, u.l.upper); |
| if ((i & 1) == 1) |
| cpu_fprintf(f, "\n"); |
| else |
| cpu_fprintf(f, " "); |
| } |
| if (env->hflags & HF_CS64_MASK) |
| nb = 16; |
| else |
| nb = 8; |
| for(i=0;i<nb;i++) { |
| cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x", |
| i, |
| env->xmm_regs[i].ZMM_L(3), |
| env->xmm_regs[i].ZMM_L(2), |
| env->xmm_regs[i].ZMM_L(1), |
| env->xmm_regs[i].ZMM_L(0)); |
| if ((i & 1) == 1) |
| cpu_fprintf(f, "\n"); |
| else |
| cpu_fprintf(f, " "); |
| } |
| } |
| if (flags & CPU_DUMP_CODE) { |
| target_ulong base = env->segs[R_CS].base + env->eip; |
| target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD); |
| uint8_t code; |
| char codestr[3]; |
| |
| cpu_fprintf(f, "Code="); |
| for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) { |
| if (cpu_memory_rw_debug(cs, base - offs + i, &code, 1, 0) == 0) { |
| snprintf(codestr, sizeof(codestr), "%02x", code); |
| } else { |
| snprintf(codestr, sizeof(codestr), "??"); |
| } |
| cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "", |
| i == offs ? "<" : "", codestr, i == offs ? ">" : ""); |
| } |
| cpu_fprintf(f, "\n"); |
| } |
| } |
| |
| /***********************************************************/ |
| /* x86 mmu */ |
| /* XXX: add PGE support */ |
| |
| void x86_cpu_set_a20(X86CPU *cpu, int a20_state) |
| { |
| CPUX86State *env = &cpu->env; |
| |
| a20_state = (a20_state != 0); |
| if (a20_state != ((env->a20_mask >> 20) & 1)) { |
| CPUState *cs = CPU(cpu); |
| |
| qemu_log_mask(CPU_LOG_MMU, "A20 update: a20=%d\n", a20_state); |
| /* if the cpu is currently executing code, we must unlink it and |
| all the potentially executing TB */ |
| cpu_interrupt(cs, CPU_INTERRUPT_EXITTB); |
| |
| /* when a20 is changed, all the MMU mappings are invalid, so |
| we must flush everything */ |
| tlb_flush(cs); |
| env->a20_mask = ~(1 << 20) | (a20_state << 20); |
| } |
| } |
| |
| void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0) |
| { |
| X86CPU *cpu = x86_env_get_cpu(env); |
| int pe_state; |
| |
| qemu_log_mask(CPU_LOG_MMU, "CR0 update: CR0=0x%08x\n", new_cr0); |
| if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) != |
| (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) { |
| tlb_flush(CPU(cpu)); |
| } |
| |
| #ifdef TARGET_X86_64 |
| if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
| (env->efer & MSR_EFER_LME)) { |
| /* enter in long mode */ |
| /* XXX: generate an exception */ |
| if (!(env->cr[4] & CR4_PAE_MASK)) |
| return; |
| env->efer |= MSR_EFER_LMA; |
| env->hflags |= HF_LMA_MASK; |
| } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
| (env->efer & MSR_EFER_LMA)) { |
| /* exit long mode */ |
| env->efer &= ~MSR_EFER_LMA; |
| env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
| env->eip &= 0xffffffff; |
| } |
| #endif |
| env->cr[0] = new_cr0 | CR0_ET_MASK; |
| |
| /* update PE flag in hidden flags */ |
| pe_state = (env->cr[0] & CR0_PE_MASK); |
| env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
| /* ensure that ADDSEG is always set in real mode */ |
| env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT); |
| /* update FPU flags */ |
| env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
| ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)); |
| } |
| |
| /* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in |
| the PDPT */ |
| void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3) |
| { |
| X86CPU *cpu = x86_env_get_cpu(env); |
| |
| env->cr[3] = new_cr3; |
| if (env->cr[0] & CR0_PG_MASK) { |
| qemu_log_mask(CPU_LOG_MMU, |
| "CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
| tlb_flush(CPU(cpu)); |
| } |
| } |
| |
| void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4) |
| { |
| X86CPU *cpu = x86_env_get_cpu(env); |
| uint32_t hflags; |
| |
| #if defined(DEBUG_MMU) |
| printf("CR4 update: %08x -> %08x\n", (uint32_t)env->cr[4], new_cr4); |
| #endif |
| if ((new_cr4 ^ env->cr[4]) & |
| (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK | |
| CR4_SMEP_MASK | CR4_SMAP_MASK | CR4_LA57_MASK)) { |
| tlb_flush(CPU(cpu)); |
| } |
| |
| /* Clear bits we're going to recompute. */ |
| hflags = env->hflags & ~(HF_OSFXSR_MASK | HF_SMAP_MASK); |
| |
| /* SSE handling */ |
| if (!(env->features[FEAT_1_EDX] & CPUID_SSE)) { |
| new_cr4 &= ~CR4_OSFXSR_MASK; |
| } |
| if (new_cr4 & CR4_OSFXSR_MASK) { |
| hflags |= HF_OSFXSR_MASK; |
| } |
| |
| if (!(env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SMAP)) { |
| new_cr4 &= ~CR4_SMAP_MASK; |
| } |
| if (new_cr4 & CR4_SMAP_MASK) { |
| hflags |= HF_SMAP_MASK; |
| } |
| |
| if (!(env->features[FEAT_7_0_ECX] & CPUID_7_0_ECX_PKU)) { |
| new_cr4 &= ~CR4_PKE_MASK; |
| } |
| |
| env->cr[4] = new_cr4; |
| env->hflags = hflags; |
| |
| cpu_sync_bndcs_hflags(env); |
| } |
| |
| #if defined(CONFIG_USER_ONLY) |
| |
| int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr, |
| int is_write, int mmu_idx) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| /* user mode only emulation */ |
| is_write &= 1; |
| env->cr[2] = addr; |
| env->error_code = (is_write << PG_ERROR_W_BIT); |
| env->error_code |= PG_ERROR_U_MASK; |
| cs->exception_index = EXCP0E_PAGE; |
| env->exception_is_int = 0; |
| env->exception_next_eip = -1; |
| return 1; |
| } |
| |
| #else |
| |
| /* return value: |
| * -1 = cannot handle fault |
| * 0 = nothing more to do |
| * 1 = generate PF fault |
| */ |
| int x86_cpu_handle_mmu_fault(CPUState *cs, vaddr addr, |
| int is_write1, int mmu_idx) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| uint64_t ptep, pte; |
| target_ulong pde_addr, pte_addr; |
| int error_code = 0; |
| int is_dirty, prot, page_size, is_write, is_user; |
| hwaddr paddr; |
| uint64_t rsvd_mask = PG_HI_RSVD_MASK; |
| uint32_t page_offset; |
| target_ulong vaddr; |
| |
| is_user = mmu_idx == MMU_USER_IDX; |
| #if defined(DEBUG_MMU) |
| printf("MMU fault: addr=%" VADDR_PRIx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
| addr, is_write1, is_user, env->eip); |
| #endif |
| is_write = is_write1 & 1; |
| |
| if (!(env->cr[0] & CR0_PG_MASK)) { |
| pte = addr; |
| #ifdef TARGET_X86_64 |
| if (!(env->hflags & HF_LMA_MASK)) { |
| /* Without long mode we can only address 32bits in real mode */ |
| pte = (uint32_t)pte; |
| } |
| #endif |
| prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| page_size = 4096; |
| goto do_mapping; |
| } |
| |
| if (!(env->efer & MSR_EFER_NXE)) { |
| rsvd_mask |= PG_NX_MASK; |
| } |
| |
| if (env->cr[4] & CR4_PAE_MASK) { |
| uint64_t pde, pdpe; |
| target_ulong pdpe_addr; |
| |
| #ifdef TARGET_X86_64 |
| if (env->hflags & HF_LMA_MASK) { |
| bool la57 = env->cr[4] & CR4_LA57_MASK; |
| uint64_t pml5e_addr, pml5e; |
| uint64_t pml4e_addr, pml4e; |
| int32_t sext; |
| |
| /* test virtual address sign extension */ |
| sext = la57 ? (int64_t)addr >> 56 : (int64_t)addr >> 47; |
| if (sext != 0 && sext != -1) { |
| env->error_code = 0; |
| cs->exception_index = EXCP0D_GPF; |
| return 1; |
| } |
| |
| if (la57) { |
| pml5e_addr = ((env->cr[3] & ~0xfff) + |
| (((addr >> 48) & 0x1ff) << 3)) & env->a20_mask; |
| pml5e = x86_ldq_phys(cs, pml5e_addr); |
| if (!(pml5e & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| if (pml5e & (rsvd_mask | PG_PSE_MASK)) { |
| goto do_fault_rsvd; |
| } |
| if (!(pml5e & PG_ACCESSED_MASK)) { |
| pml5e |= PG_ACCESSED_MASK; |
| x86_stl_phys_notdirty(cs, pml5e_addr, pml5e); |
| } |
| ptep = pml5e ^ PG_NX_MASK; |
| } else { |
| pml5e = env->cr[3]; |
| ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| } |
| |
| pml4e_addr = ((pml5e & PG_ADDRESS_MASK) + |
| (((addr >> 39) & 0x1ff) << 3)) & env->a20_mask; |
| pml4e = x86_ldq_phys(cs, pml4e_addr); |
| if (!(pml4e & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| if (pml4e & (rsvd_mask | PG_PSE_MASK)) { |
| goto do_fault_rsvd; |
| } |
| if (!(pml4e & PG_ACCESSED_MASK)) { |
| pml4e |= PG_ACCESSED_MASK; |
| x86_stl_phys_notdirty(cs, pml4e_addr, pml4e); |
| } |
| ptep &= pml4e ^ PG_NX_MASK; |
| pdpe_addr = ((pml4e & PG_ADDRESS_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
| env->a20_mask; |
| pdpe = x86_ldq_phys(cs, pdpe_addr); |
| if (!(pdpe & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| if (pdpe & rsvd_mask) { |
| goto do_fault_rsvd; |
| } |
| ptep &= pdpe ^ PG_NX_MASK; |
| if (!(pdpe & PG_ACCESSED_MASK)) { |
| pdpe |= PG_ACCESSED_MASK; |
| x86_stl_phys_notdirty(cs, pdpe_addr, pdpe); |
| } |
| if (pdpe & PG_PSE_MASK) { |
| /* 1 GB page */ |
| page_size = 1024 * 1024 * 1024; |
| pte_addr = pdpe_addr; |
| pte = pdpe; |
| goto do_check_protect; |
| } |
| } else |
| #endif |
| { |
| /* XXX: load them when cr3 is loaded ? */ |
| pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| env->a20_mask; |
| pdpe = x86_ldq_phys(cs, pdpe_addr); |
| if (!(pdpe & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| rsvd_mask |= PG_HI_USER_MASK; |
| if (pdpe & (rsvd_mask | PG_NX_MASK)) { |
| goto do_fault_rsvd; |
| } |
| ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| } |
| |
| pde_addr = ((pdpe & PG_ADDRESS_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
| env->a20_mask; |
| pde = x86_ldq_phys(cs, pde_addr); |
| if (!(pde & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| if (pde & rsvd_mask) { |
| goto do_fault_rsvd; |
| } |
| ptep &= pde ^ PG_NX_MASK; |
| if (pde & PG_PSE_MASK) { |
| /* 2 MB page */ |
| page_size = 2048 * 1024; |
| pte_addr = pde_addr; |
| pte = pde; |
| goto do_check_protect; |
| } |
| /* 4 KB page */ |
| if (!(pde & PG_ACCESSED_MASK)) { |
| pde |= PG_ACCESSED_MASK; |
| x86_stl_phys_notdirty(cs, pde_addr, pde); |
| } |
| pte_addr = ((pde & PG_ADDRESS_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
| env->a20_mask; |
| pte = x86_ldq_phys(cs, pte_addr); |
| if (!(pte & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| if (pte & rsvd_mask) { |
| goto do_fault_rsvd; |
| } |
| /* combine pde and pte nx, user and rw protections */ |
| ptep &= pte ^ PG_NX_MASK; |
| page_size = 4096; |
| } else { |
| uint32_t pde; |
| |
| /* page directory entry */ |
| pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
| env->a20_mask; |
| pde = x86_ldl_phys(cs, pde_addr); |
| if (!(pde & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| ptep = pde | PG_NX_MASK; |
| |
| /* if PSE bit is set, then we use a 4MB page */ |
| if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| page_size = 4096 * 1024; |
| pte_addr = pde_addr; |
| |
| /* Bits 20-13 provide bits 39-32 of the address, bit 21 is reserved. |
| * Leave bits 20-13 in place for setting accessed/dirty bits below. |
| */ |
| pte = pde | ((pde & 0x1fe000LL) << (32 - 13)); |
| rsvd_mask = 0x200000; |
| goto do_check_protect_pse36; |
| } |
| |
| if (!(pde & PG_ACCESSED_MASK)) { |
| pde |= PG_ACCESSED_MASK; |
| x86_stl_phys_notdirty(cs, pde_addr, pde); |
| } |
| |
| /* page directory entry */ |
| pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
| env->a20_mask; |
| pte = x86_ldl_phys(cs, pte_addr); |
| if (!(pte & PG_PRESENT_MASK)) { |
| goto do_fault; |
| } |
| /* combine pde and pte user and rw protections */ |
| ptep &= pte | PG_NX_MASK; |
| page_size = 4096; |
| rsvd_mask = 0; |
| } |
| |
| do_check_protect: |
| rsvd_mask |= (page_size - 1) & PG_ADDRESS_MASK & ~PG_PSE_PAT_MASK; |
| do_check_protect_pse36: |
| if (pte & rsvd_mask) { |
| goto do_fault_rsvd; |
| } |
| ptep ^= PG_NX_MASK; |
| |
| /* can the page can be put in the TLB? prot will tell us */ |
| if (is_user && !(ptep & PG_USER_MASK)) { |
| goto do_fault_protect; |
| } |
| |
| prot = 0; |
| if (mmu_idx != MMU_KSMAP_IDX || !(ptep & PG_USER_MASK)) { |
| prot |= PAGE_READ; |
| if ((ptep & PG_RW_MASK) || (!is_user && !(env->cr[0] & CR0_WP_MASK))) { |
| prot |= PAGE_WRITE; |
| } |
| } |
| if (!(ptep & PG_NX_MASK) && |
| (mmu_idx == MMU_USER_IDX || |
| !((env->cr[4] & CR4_SMEP_MASK) && (ptep & PG_USER_MASK)))) { |
| prot |= PAGE_EXEC; |
| } |
| if ((env->cr[4] & CR4_PKE_MASK) && (env->hflags & HF_LMA_MASK) && |
| (ptep & PG_USER_MASK) && env->pkru) { |
| uint32_t pk = (pte & PG_PKRU_MASK) >> PG_PKRU_BIT; |
| uint32_t pkru_ad = (env->pkru >> pk * 2) & 1; |
| uint32_t pkru_wd = (env->pkru >> pk * 2) & 2; |
| uint32_t pkru_prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| |
| if (pkru_ad) { |
| pkru_prot &= ~(PAGE_READ | PAGE_WRITE); |
| } else if (pkru_wd && (is_user || env->cr[0] & CR0_WP_MASK)) { |
| pkru_prot &= ~PAGE_WRITE; |
| } |
| |
| prot &= pkru_prot; |
| if ((pkru_prot & (1 << is_write1)) == 0) { |
| assert(is_write1 != 2); |
| error_code |= PG_ERROR_PK_MASK; |
| goto do_fault_protect; |
| } |
| } |
| |
| if ((prot & (1 << is_write1)) == 0) { |
| goto do_fault_protect; |
| } |
| |
| /* yes, it can! */ |
| is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| if (!(pte & PG_ACCESSED_MASK) || is_dirty) { |
| pte |= PG_ACCESSED_MASK; |
| if (is_dirty) { |
| pte |= PG_DIRTY_MASK; |
| } |
| x86_stl_phys_notdirty(cs, pte_addr, pte); |
| } |
| |
| if (!(pte & PG_DIRTY_MASK)) { |
| /* only set write access if already dirty... otherwise wait |
| for dirty access */ |
| assert(!is_write); |
| prot &= ~PAGE_WRITE; |
| } |
| |
| do_mapping: |
| pte = pte & env->a20_mask; |
| |
| /* align to page_size */ |
| pte &= PG_ADDRESS_MASK & ~(page_size - 1); |
| |
| /* Even if 4MB pages, we map only one 4KB page in the cache to |
| avoid filling it too fast */ |
| vaddr = addr & TARGET_PAGE_MASK; |
| page_offset = vaddr & (page_size - 1); |
| paddr = pte + page_offset; |
| |
| assert(prot & (1 << is_write1)); |
| tlb_set_page_with_attrs(cs, vaddr, paddr, cpu_get_mem_attrs(env), |
| prot, mmu_idx, page_size); |
| return 0; |
| do_fault_rsvd: |
| error_code |= PG_ERROR_RSVD_MASK; |
| do_fault_protect: |
| error_code |= PG_ERROR_P_MASK; |
| do_fault: |
| error_code |= (is_write << PG_ERROR_W_BIT); |
| if (is_user) |
| error_code |= PG_ERROR_U_MASK; |
| if (is_write1 == 2 && |
| (((env->efer & MSR_EFER_NXE) && |
| (env->cr[4] & CR4_PAE_MASK)) || |
| (env->cr[4] & CR4_SMEP_MASK))) |
| error_code |= PG_ERROR_I_D_MASK; |
| if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
| /* cr2 is not modified in case of exceptions */ |
| x86_stq_phys(cs, |
| env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), |
| addr); |
| } else { |
| env->cr[2] = addr; |
| } |
| env->error_code = error_code; |
| cs->exception_index = EXCP0E_PAGE; |
| return 1; |
| } |
| |
| hwaddr x86_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| target_ulong pde_addr, pte_addr; |
| uint64_t pte; |
| uint32_t page_offset; |
| int page_size; |
| |
| if (!(env->cr[0] & CR0_PG_MASK)) { |
| pte = addr & env->a20_mask; |
| page_size = 4096; |
| } else if (env->cr[4] & CR4_PAE_MASK) { |
| target_ulong pdpe_addr; |
| uint64_t pde, pdpe; |
| |
| #ifdef TARGET_X86_64 |
| if (env->hflags & HF_LMA_MASK) { |
| bool la57 = env->cr[4] & CR4_LA57_MASK; |
| uint64_t pml5e_addr, pml5e; |
| uint64_t pml4e_addr, pml4e; |
| int32_t sext; |
| |
| /* test virtual address sign extension */ |
| sext = la57 ? (int64_t)addr >> 56 : (int64_t)addr >> 47; |
| if (sext != 0 && sext != -1) { |
| return -1; |
| } |
| |
| if (la57) { |
| pml5e_addr = ((env->cr[3] & ~0xfff) + |
| (((addr >> 48) & 0x1ff) << 3)) & env->a20_mask; |
| pml5e = x86_ldq_phys(cs, pml5e_addr); |
| if (!(pml5e & PG_PRESENT_MASK)) { |
| return -1; |
| } |
| } else { |
| pml5e = env->cr[3]; |
| } |
| |
| pml4e_addr = ((pml5e & PG_ADDRESS_MASK) + |
| (((addr >> 39) & 0x1ff) << 3)) & env->a20_mask; |
| pml4e = x86_ldq_phys(cs, pml4e_addr); |
| if (!(pml4e & PG_PRESENT_MASK)) { |
| return -1; |
| } |
| pdpe_addr = ((pml4e & PG_ADDRESS_MASK) + |
| (((addr >> 30) & 0x1ff) << 3)) & env->a20_mask; |
| pdpe = x86_ldq_phys(cs, pdpe_addr); |
| if (!(pdpe & PG_PRESENT_MASK)) { |
| return -1; |
| } |
| if (pdpe & PG_PSE_MASK) { |
| page_size = 1024 * 1024 * 1024; |
| pte = pdpe; |
| goto out; |
| } |
| |
| } else |
| #endif |
| { |
| pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| env->a20_mask; |
| pdpe = x86_ldq_phys(cs, pdpe_addr); |
| if (!(pdpe & PG_PRESENT_MASK)) |
| return -1; |
| } |
| |
| pde_addr = ((pdpe & PG_ADDRESS_MASK) + |
| (((addr >> 21) & 0x1ff) << 3)) & env->a20_mask; |
| pde = x86_ldq_phys(cs, pde_addr); |
| if (!(pde & PG_PRESENT_MASK)) { |
| return -1; |
| } |
| if (pde & PG_PSE_MASK) { |
| /* 2 MB page */ |
| page_size = 2048 * 1024; |
| pte = pde; |
| } else { |
| /* 4 KB page */ |
| pte_addr = ((pde & PG_ADDRESS_MASK) + |
| (((addr >> 12) & 0x1ff) << 3)) & env->a20_mask; |
| page_size = 4096; |
| pte = x86_ldq_phys(cs, pte_addr); |
| } |
| if (!(pte & PG_PRESENT_MASK)) { |
| return -1; |
| } |
| } else { |
| uint32_t pde; |
| |
| /* page directory entry */ |
| pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
| pde = x86_ldl_phys(cs, pde_addr); |
| if (!(pde & PG_PRESENT_MASK)) |
| return -1; |
| if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| pte = pde | ((pde & 0x1fe000LL) << (32 - 13)); |
| page_size = 4096 * 1024; |
| } else { |
| /* page directory entry */ |
| pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
| pte = x86_ldl_phys(cs, pte_addr); |
| if (!(pte & PG_PRESENT_MASK)) { |
| return -1; |
| } |
| page_size = 4096; |
| } |
| pte = pte & env->a20_mask; |
| } |
| |
| #ifdef TARGET_X86_64 |
| out: |
| #endif |
| pte &= PG_ADDRESS_MASK & ~(page_size - 1); |
| page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1); |
| return pte | page_offset; |
| } |
| |
| typedef struct MCEInjectionParams { |
| Monitor *mon; |
| int bank; |
| uint64_t status; |
| uint64_t mcg_status; |
| uint64_t addr; |
| uint64_t misc; |
| int flags; |
| } MCEInjectionParams; |
| |
| static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data) |
| { |
| MCEInjectionParams *params = data.host_ptr; |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *cenv = &cpu->env; |
| uint64_t *banks = cenv->mce_banks + 4 * params->bank; |
| |
| cpu_synchronize_state(cs); |
| |
| /* |
| * If there is an MCE exception being processed, ignore this SRAO MCE |
| * unless unconditional injection was requested. |
| */ |
| if (!(params->flags & MCE_INJECT_UNCOND_AO) |
| && !(params->status & MCI_STATUS_AR) |
| && (cenv->mcg_status & MCG_STATUS_MCIP)) { |
| return; |
| } |
| |
| if (params->status & MCI_STATUS_UC) { |
| /* |
| * if MSR_MCG_CTL is not all 1s, the uncorrected error |
| * reporting is disabled |
| */ |
| if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) { |
| monitor_printf(params->mon, |
| "CPU %d: Uncorrected error reporting disabled\n", |
| cs->cpu_index); |
| return; |
| } |
| |
| /* |
| * if MSR_MCi_CTL is not all 1s, the uncorrected error |
| * reporting is disabled for the bank |
| */ |
| if (banks[0] != ~(uint64_t)0) { |
| monitor_printf(params->mon, |
| "CPU %d: Uncorrected error reporting disabled for" |
| " bank %d\n", |
| cs->cpu_index, params->bank); |
| return; |
| } |
| |
| if ((cenv->mcg_status & MCG_STATUS_MCIP) || |
| !(cenv->cr[4] & CR4_MCE_MASK)) { |
| monitor_printf(params->mon, |
| "CPU %d: Previous MCE still in progress, raising" |
| " triple fault\n", |
| cs->cpu_index); |
| qemu_log_mask(CPU_LOG_RESET, "Triple fault\n"); |
| qemu_system_reset_request(); |
| return; |
| } |
| if (banks[1] & MCI_STATUS_VAL) { |
| params->status |= MCI_STATUS_OVER; |
| } |
| banks[2] = params->addr; |
| banks[3] = params->misc; |
| cenv->mcg_status = params->mcg_status; |
| banks[1] = params->status; |
| cpu_interrupt(cs, CPU_INTERRUPT_MCE); |
| } else if (!(banks[1] & MCI_STATUS_VAL) |
| || !(banks[1] & MCI_STATUS_UC)) { |
| if (banks[1] & MCI_STATUS_VAL) { |
| params->status |= MCI_STATUS_OVER; |
| } |
| banks[2] = params->addr; |
| banks[3] = params->misc; |
| banks[1] = params->status; |
| } else { |
| banks[1] |= MCI_STATUS_OVER; |
| } |
| } |
| |
| void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank, |
| uint64_t status, uint64_t mcg_status, uint64_t addr, |
| uint64_t misc, int flags) |
| { |
| CPUState *cs = CPU(cpu); |
| CPUX86State *cenv = &cpu->env; |
| MCEInjectionParams params = { |
| .mon = mon, |
| .bank = bank, |
| .status = status, |
| .mcg_status = mcg_status, |
| .addr = addr, |
| .misc = misc, |
| .flags = flags, |
| }; |
| unsigned bank_num = cenv->mcg_cap & 0xff; |
| |
| if (!cenv->mcg_cap) { |
| monitor_printf(mon, "MCE injection not supported\n"); |
| return; |
| } |
| if (bank >= bank_num) { |
| monitor_printf(mon, "Invalid MCE bank number\n"); |
| return; |
| } |
| if (!(status & MCI_STATUS_VAL)) { |
| monitor_printf(mon, "Invalid MCE status code\n"); |
| return; |
| } |
| if ((flags & MCE_INJECT_BROADCAST) |
| && !cpu_x86_support_mca_broadcast(cenv)) { |
| monitor_printf(mon, "Guest CPU does not support MCA broadcast\n"); |
| return; |
| } |
| |
| run_on_cpu(cs, do_inject_x86_mce, RUN_ON_CPU_HOST_PTR(¶ms)); |
| if (flags & MCE_INJECT_BROADCAST) { |
| CPUState *other_cs; |
| |
| params.bank = 1; |
| params.status = MCI_STATUS_VAL | MCI_STATUS_UC; |
| params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV; |
| params.addr = 0; |
| params.misc = 0; |
| CPU_FOREACH(other_cs) { |
| if (other_cs == cs) { |
| continue; |
| } |
| run_on_cpu(other_cs, do_inject_x86_mce, RUN_ON_CPU_HOST_PTR(¶ms)); |
| } |
| } |
| } |
| |
| void cpu_report_tpr_access(CPUX86State *env, TPRAccess access) |
| { |
| X86CPU *cpu = x86_env_get_cpu(env); |
| CPUState *cs = CPU(cpu); |
| |
| if (kvm_enabled()) { |
| env->tpr_access_type = access; |
| |
| cpu_interrupt(cs, CPU_INTERRUPT_TPR); |
| } else { |
| cpu_restore_state(cs, cs->mem_io_pc); |
| |
| apic_handle_tpr_access_report(cpu->apic_state, env->eip, access); |
| } |
| } |
| #endif /* !CONFIG_USER_ONLY */ |
| |
| int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector, |
| target_ulong *base, unsigned int *limit, |
| unsigned int *flags) |
| { |
| X86CPU *cpu = x86_env_get_cpu(env); |
| CPUState *cs = CPU(cpu); |
| SegmentCache *dt; |
| target_ulong ptr; |
| uint32_t e1, e2; |
| int index; |
| |
| if (selector & 0x4) |
| dt = &env->ldt; |
| else |
| dt = &env->gdt; |
| index = selector & ~7; |
| ptr = dt->base + index; |
| if ((index + 7) > dt->limit |
| || cpu_memory_rw_debug(cs, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0 |
| || cpu_memory_rw_debug(cs, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0) |
| return 0; |
| |
| *base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
| *limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
| if (e2 & DESC_G_MASK) |
| *limit = (*limit << 12) | 0xfff; |
| *flags = e2; |
| |
| return 1; |
| } |
| |
| #if !defined(CONFIG_USER_ONLY) |
| void do_cpu_init(X86CPU *cpu) |
| { |
| CPUState *cs = CPU(cpu); |
| CPUX86State *env = &cpu->env; |
| CPUX86State *save = g_new(CPUX86State, 1); |
| int sipi = cs->interrupt_request & CPU_INTERRUPT_SIPI; |
| |
| *save = *env; |
| |
| cpu_reset(cs); |
| cs->interrupt_request = sipi; |
| memcpy(&env->start_init_save, &save->start_init_save, |
| offsetof(CPUX86State, end_init_save) - |
| offsetof(CPUX86State, start_init_save)); |
| g_free(save); |
| |
| if (kvm_enabled()) { |
| kvm_arch_do_init_vcpu(cpu); |
| } |
| apic_init_reset(cpu->apic_state); |
| } |
| |
| void do_cpu_sipi(X86CPU *cpu) |
| { |
| apic_sipi(cpu->apic_state); |
| } |
| #else |
| void do_cpu_init(X86CPU *cpu) |
| { |
| } |
| void do_cpu_sipi(X86CPU *cpu) |
| { |
| } |
| #endif |
| |
| /* Frob eflags into and out of the CPU temporary format. */ |
| |
| void x86_cpu_exec_enter(CPUState *cs) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
| env->df = 1 - (2 * ((env->eflags >> 10) & 1)); |
| CC_OP = CC_OP_EFLAGS; |
| env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); |
| } |
| |
| void x86_cpu_exec_exit(CPUState *cs) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| env->eflags = cpu_compute_eflags(env); |
| } |
| |
| #ifndef CONFIG_USER_ONLY |
| uint8_t x86_ldub_phys(CPUState *cs, hwaddr addr) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| return address_space_ldub(cs->as, addr, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| uint32_t x86_lduw_phys(CPUState *cs, hwaddr addr) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| return address_space_lduw(cs->as, addr, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| uint32_t x86_ldl_phys(CPUState *cs, hwaddr addr) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| return address_space_ldl(cs->as, addr, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| uint64_t x86_ldq_phys(CPUState *cs, hwaddr addr) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| return address_space_ldq(cs->as, addr, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| void x86_stb_phys(CPUState *cs, hwaddr addr, uint8_t val) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| address_space_stb(cs->as, addr, val, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| void x86_stl_phys_notdirty(CPUState *cs, hwaddr addr, uint32_t val) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| address_space_stl_notdirty(cs->as, addr, val, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| void x86_stw_phys(CPUState *cs, hwaddr addr, uint32_t val) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| address_space_stw(cs->as, addr, val, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| void x86_stl_phys(CPUState *cs, hwaddr addr, uint32_t val) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| address_space_stl(cs->as, addr, val, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| |
| void x86_stq_phys(CPUState *cs, hwaddr addr, uint64_t val) |
| { |
| X86CPU *cpu = X86_CPU(cs); |
| CPUX86State *env = &cpu->env; |
| |
| address_space_stq(cs->as, addr, val, |
| cpu_get_mem_attrs(env), |
| NULL); |
| } |
| #endif |
