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/*
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* i386 helpers (without register variable usage)
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdarg.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <string.h> |
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#include <inttypes.h> |
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#include <signal.h> |
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|
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#include "cpu.h" |
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#include "exec-all.h" |
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#include "qemu-common.h" |
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#include "kvm.h" |
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//#define DEBUG_MMU
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/* NOTE: must be called outside the CPU execute loop */
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void cpu_reset(CPUX86State *env)
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{ |
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int i;
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|
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if (qemu_loglevel_mask(CPU_LOG_RESET)) {
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qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
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log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
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} |
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memset(env, 0, offsetof(CPUX86State, breakpoints));
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tlb_flush(env, 1);
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env->old_exception = -1;
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/* init to reset state */
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|
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#ifdef CONFIG_SOFTMMU
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env->hflags |= HF_SOFTMMU_MASK; |
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#endif
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env->hflags2 |= HF2_GIF_MASK; |
55 |
|
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cpu_x86_update_cr0(env, 0x60000010);
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env->a20_mask = ~0x0;
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env->smbase = 0x30000;
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env->idt.limit = 0xffff;
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env->gdt.limit = 0xffff;
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env->ldt.limit = 0xffff;
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env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
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env->tr.limit = 0xffff;
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env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
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cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, |
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DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | |
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DESC_R_MASK | DESC_A_MASK); |
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cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, |
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DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
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DESC_A_MASK); |
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cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, |
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DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
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DESC_A_MASK); |
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cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, |
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DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
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DESC_A_MASK); |
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cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, |
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DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
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DESC_A_MASK); |
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cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, |
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DESC_P_MASK | DESC_S_MASK | DESC_W_MASK | |
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DESC_A_MASK); |
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|
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env->eip = 0xfff0;
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env->regs[R_EDX] = env->cpuid_version; |
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env->eflags = 0x2;
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/* FPU init */
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for(i = 0;i < 8; i++) |
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env->fptags[i] = 1;
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env->fpuc = 0x37f;
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env->mxcsr = 0x1f80;
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memset(env->dr, 0, sizeof(env->dr)); |
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env->dr[6] = DR6_FIXED_1;
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env->dr[7] = DR7_FIXED_1;
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cpu_breakpoint_remove_all(env, BP_CPU); |
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cpu_watchpoint_remove_all(env, BP_CPU); |
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env->mcg_status = 0;
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} |
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void cpu_x86_close(CPUX86State *env)
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{ |
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qemu_free(env); |
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} |
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/***********************************************************/
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/* x86 debug */
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static const char *cc_op_str[] = { |
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"DYNAMIC",
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"EFLAGS",
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"MULB",
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"MULW",
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"MULL",
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"MULQ",
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"ADDB",
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"ADDW",
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"ADDL",
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"ADDQ",
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"ADCB",
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"ADCW",
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"ADCL",
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"ADCQ",
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"SUBB",
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"SUBW",
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"SUBL",
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"SUBQ",
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"SBBB",
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"SBBW",
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"SBBL",
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"SBBQ",
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"LOGICB",
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"LOGICW",
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"LOGICL",
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"LOGICQ",
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"INCB",
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"INCW",
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"INCL",
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"INCQ",
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"DECB",
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"DECW",
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"DECL",
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"DECQ",
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"SHLB",
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"SHLW",
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"SHLL",
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"SHLQ",
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"SARB",
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"SARW",
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"SARL",
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"SARQ",
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}; |
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static void |
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cpu_x86_dump_seg_cache(CPUState *env, FILE *f, |
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int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
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const char *name, struct SegmentCache *sc) |
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{ |
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#ifdef TARGET_X86_64
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if (env->hflags & HF_CS64_MASK) {
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cpu_fprintf(f, "%-3s=%04x %016" PRIx64 " %08x %08x", name, |
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sc->selector, sc->base, sc->limit, sc->flags); |
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} else
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#endif
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{ |
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cpu_fprintf(f, "%-3s=%04x %08x %08x %08x", name, sc->selector,
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(uint32_t)sc->base, sc->limit, sc->flags); |
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} |
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if (!(env->hflags & HF_PE_MASK) || !(sc->flags & DESC_P_MASK))
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goto done;
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cpu_fprintf(f, " DPL=%d ", (sc->flags & DESC_DPL_MASK) >> DESC_DPL_SHIFT);
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if (sc->flags & DESC_S_MASK) {
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if (sc->flags & DESC_CS_MASK) {
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cpu_fprintf(f, (sc->flags & DESC_L_MASK) ? "CS64" :
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((sc->flags & DESC_B_MASK) ? "CS32" : "CS16")); |
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cpu_fprintf(f, " [%c%c", (sc->flags & DESC_C_MASK) ? 'C' : '-', |
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(sc->flags & DESC_R_MASK) ? 'R' : '-'); |
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} else {
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cpu_fprintf(f, (sc->flags & DESC_B_MASK) ? "DS " : "DS16"); |
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cpu_fprintf(f, " [%c%c", (sc->flags & DESC_E_MASK) ? 'E' : '-', |
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(sc->flags & DESC_W_MASK) ? 'W' : '-'); |
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} |
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cpu_fprintf(f, "%c]", (sc->flags & DESC_A_MASK) ? 'A' : '-'); |
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} else {
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static const char *sys_type_name[2][16] = { |
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{ /* 32 bit mode */
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"Reserved", "TSS16-avl", "LDT", "TSS16-busy", |
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"CallGate16", "TaskGate", "IntGate16", "TrapGate16", |
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"Reserved", "TSS32-avl", "Reserved", "TSS32-busy", |
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"CallGate32", "Reserved", "IntGate32", "TrapGate32" |
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}, |
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{ /* 64 bit mode */
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"<hiword>", "Reserved", "LDT", "Reserved", "Reserved", |
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"Reserved", "Reserved", "Reserved", "Reserved", |
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"TSS64-avl", "Reserved", "TSS64-busy", "CallGate64", |
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"Reserved", "IntGate64", "TrapGate64" |
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} |
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}; |
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cpu_fprintf(f, sys_type_name[(env->hflags & HF_LMA_MASK) ? 1 : 0] |
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[(sc->flags & DESC_TYPE_MASK) |
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>> DESC_TYPE_SHIFT]); |
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} |
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done:
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cpu_fprintf(f, "\n");
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} |
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void cpu_dump_state(CPUState *env, FILE *f,
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int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
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int flags)
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{ |
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int eflags, i, nb;
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char cc_op_name[32]; |
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static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; |
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cpu_synchronize_state(env); |
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eflags = env->eflags; |
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#ifdef TARGET_X86_64
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if (env->hflags & HF_CS64_MASK) {
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cpu_fprintf(f, |
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"RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" |
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"RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" |
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"R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" |
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"R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" |
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"RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
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env->regs[R_EAX], |
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env->regs[R_EBX], |
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env->regs[R_ECX], |
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env->regs[R_EDX], |
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env->regs[R_ESI], |
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env->regs[R_EDI], |
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env->regs[R_EBP], |
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env->regs[R_ESP], |
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env->regs[8],
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env->regs[9],
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env->regs[10],
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env->regs[11],
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env->regs[12],
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env->regs[13],
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env->regs[14],
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env->regs[15],
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env->eip, eflags, |
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eflags & DF_MASK ? 'D' : '-', |
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eflags & CC_O ? 'O' : '-', |
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eflags & CC_S ? 'S' : '-', |
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eflags & CC_Z ? 'Z' : '-', |
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eflags & CC_A ? 'A' : '-', |
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eflags & CC_P ? 'P' : '-', |
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eflags & CC_C ? 'C' : '-', |
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env->hflags & HF_CPL_MASK, |
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(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
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(env->a20_mask >> 20) & 1, |
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(env->hflags >> HF_SMM_SHIFT) & 1,
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env->halted); |
273 |
} else
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#endif
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{ |
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cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
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"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
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"EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
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(uint32_t)env->regs[R_EAX], |
280 |
(uint32_t)env->regs[R_EBX], |
281 |
(uint32_t)env->regs[R_ECX], |
282 |
(uint32_t)env->regs[R_EDX], |
283 |
(uint32_t)env->regs[R_ESI], |
284 |
(uint32_t)env->regs[R_EDI], |
285 |
(uint32_t)env->regs[R_EBP], |
286 |
(uint32_t)env->regs[R_ESP], |
287 |
(uint32_t)env->eip, eflags, |
288 |
eflags & DF_MASK ? 'D' : '-', |
289 |
eflags & CC_O ? 'O' : '-', |
290 |
eflags & CC_S ? 'S' : '-', |
291 |
eflags & CC_Z ? 'Z' : '-', |
292 |
eflags & CC_A ? 'A' : '-', |
293 |
eflags & CC_P ? 'P' : '-', |
294 |
eflags & CC_C ? 'C' : '-', |
295 |
env->hflags & HF_CPL_MASK, |
296 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
297 |
(env->a20_mask >> 20) & 1, |
298 |
(env->hflags >> HF_SMM_SHIFT) & 1,
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299 |
env->halted); |
300 |
} |
301 |
|
302 |
for(i = 0; i < 6; i++) { |
303 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i], |
304 |
&env->segs[i]); |
305 |
} |
306 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
|
307 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
|
308 |
|
309 |
#ifdef TARGET_X86_64
|
310 |
if (env->hflags & HF_LMA_MASK) {
|
311 |
cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
312 |
env->gdt.base, env->gdt.limit); |
313 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
314 |
env->idt.base, env->idt.limit); |
315 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
316 |
(uint32_t)env->cr[0],
|
317 |
env->cr[2],
|
318 |
env->cr[3],
|
319 |
(uint32_t)env->cr[4]);
|
320 |
for(i = 0; i < 4; i++) |
321 |
cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
322 |
cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
323 |
env->dr[6], env->dr[7]); |
324 |
} else
|
325 |
#endif
|
326 |
{ |
327 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
328 |
(uint32_t)env->gdt.base, env->gdt.limit); |
329 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
330 |
(uint32_t)env->idt.base, env->idt.limit); |
331 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
332 |
(uint32_t)env->cr[0],
|
333 |
(uint32_t)env->cr[2],
|
334 |
(uint32_t)env->cr[3],
|
335 |
(uint32_t)env->cr[4]);
|
336 |
for(i = 0; i < 4; i++) |
337 |
cpu_fprintf(f, "DR%d=%08x ", i, env->dr[i]);
|
338 |
cpu_fprintf(f, "\nDR6=%08x DR7=%08x\n", env->dr[6], env->dr[7]); |
339 |
} |
340 |
if (flags & X86_DUMP_CCOP) {
|
341 |
if ((unsigned)env->cc_op < CC_OP_NB) |
342 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
343 |
else
|
344 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
345 |
#ifdef TARGET_X86_64
|
346 |
if (env->hflags & HF_CS64_MASK) {
|
347 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
348 |
env->cc_src, env->cc_dst, |
349 |
cc_op_name); |
350 |
} else
|
351 |
#endif
|
352 |
{ |
353 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
354 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
355 |
cc_op_name); |
356 |
} |
357 |
} |
358 |
if (flags & X86_DUMP_FPU) {
|
359 |
int fptag;
|
360 |
fptag = 0;
|
361 |
for(i = 0; i < 8; i++) { |
362 |
fptag |= ((!env->fptags[i]) << i); |
363 |
} |
364 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
365 |
env->fpuc, |
366 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
367 |
env->fpstt, |
368 |
fptag, |
369 |
env->mxcsr); |
370 |
for(i=0;i<8;i++) { |
371 |
#if defined(USE_X86LDOUBLE)
|
372 |
union {
|
373 |
long double d; |
374 |
struct {
|
375 |
uint64_t lower; |
376 |
uint16_t upper; |
377 |
} l; |
378 |
} tmp; |
379 |
tmp.d = env->fpregs[i].d; |
380 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
381 |
i, tmp.l.lower, tmp.l.upper); |
382 |
#else
|
383 |
cpu_fprintf(f, "FPR%d=%016" PRIx64,
|
384 |
i, env->fpregs[i].mmx.q); |
385 |
#endif
|
386 |
if ((i & 1) == 1) |
387 |
cpu_fprintf(f, "\n");
|
388 |
else
|
389 |
cpu_fprintf(f, " ");
|
390 |
} |
391 |
if (env->hflags & HF_CS64_MASK)
|
392 |
nb = 16;
|
393 |
else
|
394 |
nb = 8;
|
395 |
for(i=0;i<nb;i++) { |
396 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
397 |
i, |
398 |
env->xmm_regs[i].XMM_L(3),
|
399 |
env->xmm_regs[i].XMM_L(2),
|
400 |
env->xmm_regs[i].XMM_L(1),
|
401 |
env->xmm_regs[i].XMM_L(0));
|
402 |
if ((i & 1) == 1) |
403 |
cpu_fprintf(f, "\n");
|
404 |
else
|
405 |
cpu_fprintf(f, " ");
|
406 |
} |
407 |
} |
408 |
} |
409 |
|
410 |
/***********************************************************/
|
411 |
/* x86 mmu */
|
412 |
/* XXX: add PGE support */
|
413 |
|
414 |
void cpu_x86_set_a20(CPUX86State *env, int a20_state) |
415 |
{ |
416 |
a20_state = (a20_state != 0);
|
417 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
418 |
#if defined(DEBUG_MMU)
|
419 |
printf("A20 update: a20=%d\n", a20_state);
|
420 |
#endif
|
421 |
/* if the cpu is currently executing code, we must unlink it and
|
422 |
all the potentially executing TB */
|
423 |
cpu_interrupt(env, CPU_INTERRUPT_EXITTB); |
424 |
|
425 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
426 |
we must flush everything */
|
427 |
tlb_flush(env, 1);
|
428 |
env->a20_mask = ~(1 << 20) | (a20_state << 20); |
429 |
} |
430 |
} |
431 |
|
432 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
433 |
{ |
434 |
int pe_state;
|
435 |
|
436 |
#if defined(DEBUG_MMU)
|
437 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
438 |
#endif
|
439 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
440 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
441 |
tlb_flush(env, 1);
|
442 |
} |
443 |
|
444 |
#ifdef TARGET_X86_64
|
445 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
446 |
(env->efer & MSR_EFER_LME)) { |
447 |
/* enter in long mode */
|
448 |
/* XXX: generate an exception */
|
449 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
450 |
return;
|
451 |
env->efer |= MSR_EFER_LMA; |
452 |
env->hflags |= HF_LMA_MASK; |
453 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
454 |
(env->efer & MSR_EFER_LMA)) { |
455 |
/* exit long mode */
|
456 |
env->efer &= ~MSR_EFER_LMA; |
457 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
458 |
env->eip &= 0xffffffff;
|
459 |
} |
460 |
#endif
|
461 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
462 |
|
463 |
/* update PE flag in hidden flags */
|
464 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
465 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
466 |
/* ensure that ADDSEG is always set in real mode */
|
467 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
468 |
/* update FPU flags */
|
469 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
470 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
471 |
} |
472 |
|
473 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
474 |
the PDPT */
|
475 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
476 |
{ |
477 |
env->cr[3] = new_cr3;
|
478 |
if (env->cr[0] & CR0_PG_MASK) { |
479 |
#if defined(DEBUG_MMU)
|
480 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
481 |
#endif
|
482 |
tlb_flush(env, 0);
|
483 |
} |
484 |
} |
485 |
|
486 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
487 |
{ |
488 |
#if defined(DEBUG_MMU)
|
489 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
490 |
#endif
|
491 |
if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
|
492 |
(env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
|
493 |
tlb_flush(env, 1);
|
494 |
} |
495 |
/* SSE handling */
|
496 |
if (!(env->cpuid_features & CPUID_SSE))
|
497 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
498 |
if (new_cr4 & CR4_OSFXSR_MASK)
|
499 |
env->hflags |= HF_OSFXSR_MASK; |
500 |
else
|
501 |
env->hflags &= ~HF_OSFXSR_MASK; |
502 |
|
503 |
env->cr[4] = new_cr4;
|
504 |
} |
505 |
|
506 |
#if defined(CONFIG_USER_ONLY)
|
507 |
|
508 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
509 |
int is_write, int mmu_idx, int is_softmmu) |
510 |
{ |
511 |
/* user mode only emulation */
|
512 |
is_write &= 1;
|
513 |
env->cr[2] = addr;
|
514 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
515 |
env->error_code |= PG_ERROR_U_MASK; |
516 |
env->exception_index = EXCP0E_PAGE; |
517 |
return 1; |
518 |
} |
519 |
|
520 |
#else
|
521 |
|
522 |
/* XXX: This value should match the one returned by CPUID
|
523 |
* and in exec.c */
|
524 |
# if defined(TARGET_X86_64)
|
525 |
# define PHYS_ADDR_MASK 0xfffffff000LL |
526 |
# else
|
527 |
# define PHYS_ADDR_MASK 0xffffff000LL |
528 |
# endif
|
529 |
|
530 |
/* return value:
|
531 |
-1 = cannot handle fault
|
532 |
0 = nothing more to do
|
533 |
1 = generate PF fault
|
534 |
*/
|
535 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
536 |
int is_write1, int mmu_idx, int is_softmmu) |
537 |
{ |
538 |
uint64_t ptep, pte; |
539 |
target_ulong pde_addr, pte_addr; |
540 |
int error_code, is_dirty, prot, page_size, is_write, is_user;
|
541 |
target_phys_addr_t paddr; |
542 |
uint32_t page_offset; |
543 |
target_ulong vaddr, virt_addr; |
544 |
|
545 |
is_user = mmu_idx == MMU_USER_IDX; |
546 |
#if defined(DEBUG_MMU)
|
547 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
548 |
addr, is_write1, is_user, env->eip); |
549 |
#endif
|
550 |
is_write = is_write1 & 1;
|
551 |
|
552 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
553 |
pte = addr; |
554 |
virt_addr = addr & TARGET_PAGE_MASK; |
555 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
556 |
page_size = 4096;
|
557 |
goto do_mapping;
|
558 |
} |
559 |
|
560 |
if (env->cr[4] & CR4_PAE_MASK) { |
561 |
uint64_t pde, pdpe; |
562 |
target_ulong pdpe_addr; |
563 |
|
564 |
#ifdef TARGET_X86_64
|
565 |
if (env->hflags & HF_LMA_MASK) {
|
566 |
uint64_t pml4e_addr, pml4e; |
567 |
int32_t sext; |
568 |
|
569 |
/* test virtual address sign extension */
|
570 |
sext = (int64_t)addr >> 47;
|
571 |
if (sext != 0 && sext != -1) { |
572 |
env->error_code = 0;
|
573 |
env->exception_index = EXCP0D_GPF; |
574 |
return 1; |
575 |
} |
576 |
|
577 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
578 |
env->a20_mask; |
579 |
pml4e = ldq_phys(pml4e_addr); |
580 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
581 |
error_code = 0;
|
582 |
goto do_fault;
|
583 |
} |
584 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
585 |
error_code = PG_ERROR_RSVD_MASK; |
586 |
goto do_fault;
|
587 |
} |
588 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
589 |
pml4e |= PG_ACCESSED_MASK; |
590 |
stl_phys_notdirty(pml4e_addr, pml4e); |
591 |
} |
592 |
ptep = pml4e ^ PG_NX_MASK; |
593 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
594 |
env->a20_mask; |
595 |
pdpe = ldq_phys(pdpe_addr); |
596 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
597 |
error_code = 0;
|
598 |
goto do_fault;
|
599 |
} |
600 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
601 |
error_code = PG_ERROR_RSVD_MASK; |
602 |
goto do_fault;
|
603 |
} |
604 |
ptep &= pdpe ^ PG_NX_MASK; |
605 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
606 |
pdpe |= PG_ACCESSED_MASK; |
607 |
stl_phys_notdirty(pdpe_addr, pdpe); |
608 |
} |
609 |
} else
|
610 |
#endif
|
611 |
{ |
612 |
/* XXX: load them when cr3 is loaded ? */
|
613 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
614 |
env->a20_mask; |
615 |
pdpe = ldq_phys(pdpe_addr); |
616 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
617 |
error_code = 0;
|
618 |
goto do_fault;
|
619 |
} |
620 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
621 |
} |
622 |
|
623 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
624 |
env->a20_mask; |
625 |
pde = ldq_phys(pde_addr); |
626 |
if (!(pde & PG_PRESENT_MASK)) {
|
627 |
error_code = 0;
|
628 |
goto do_fault;
|
629 |
} |
630 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
631 |
error_code = PG_ERROR_RSVD_MASK; |
632 |
goto do_fault;
|
633 |
} |
634 |
ptep &= pde ^ PG_NX_MASK; |
635 |
if (pde & PG_PSE_MASK) {
|
636 |
/* 2 MB page */
|
637 |
page_size = 2048 * 1024; |
638 |
ptep ^= PG_NX_MASK; |
639 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
640 |
goto do_fault_protect;
|
641 |
if (is_user) {
|
642 |
if (!(ptep & PG_USER_MASK))
|
643 |
goto do_fault_protect;
|
644 |
if (is_write && !(ptep & PG_RW_MASK))
|
645 |
goto do_fault_protect;
|
646 |
} else {
|
647 |
if ((env->cr[0] & CR0_WP_MASK) && |
648 |
is_write && !(ptep & PG_RW_MASK)) |
649 |
goto do_fault_protect;
|
650 |
} |
651 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
652 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
653 |
pde |= PG_ACCESSED_MASK; |
654 |
if (is_dirty)
|
655 |
pde |= PG_DIRTY_MASK; |
656 |
stl_phys_notdirty(pde_addr, pde); |
657 |
} |
658 |
/* align to page_size */
|
659 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
660 |
virt_addr = addr & ~(page_size - 1);
|
661 |
} else {
|
662 |
/* 4 KB page */
|
663 |
if (!(pde & PG_ACCESSED_MASK)) {
|
664 |
pde |= PG_ACCESSED_MASK; |
665 |
stl_phys_notdirty(pde_addr, pde); |
666 |
} |
667 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
668 |
env->a20_mask; |
669 |
pte = ldq_phys(pte_addr); |
670 |
if (!(pte & PG_PRESENT_MASK)) {
|
671 |
error_code = 0;
|
672 |
goto do_fault;
|
673 |
} |
674 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
675 |
error_code = PG_ERROR_RSVD_MASK; |
676 |
goto do_fault;
|
677 |
} |
678 |
/* combine pde and pte nx, user and rw protections */
|
679 |
ptep &= pte ^ PG_NX_MASK; |
680 |
ptep ^= PG_NX_MASK; |
681 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
682 |
goto do_fault_protect;
|
683 |
if (is_user) {
|
684 |
if (!(ptep & PG_USER_MASK))
|
685 |
goto do_fault_protect;
|
686 |
if (is_write && !(ptep & PG_RW_MASK))
|
687 |
goto do_fault_protect;
|
688 |
} else {
|
689 |
if ((env->cr[0] & CR0_WP_MASK) && |
690 |
is_write && !(ptep & PG_RW_MASK)) |
691 |
goto do_fault_protect;
|
692 |
} |
693 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
694 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
695 |
pte |= PG_ACCESSED_MASK; |
696 |
if (is_dirty)
|
697 |
pte |= PG_DIRTY_MASK; |
698 |
stl_phys_notdirty(pte_addr, pte); |
699 |
} |
700 |
page_size = 4096;
|
701 |
virt_addr = addr & ~0xfff;
|
702 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
703 |
} |
704 |
} else {
|
705 |
uint32_t pde; |
706 |
|
707 |
/* page directory entry */
|
708 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
709 |
env->a20_mask; |
710 |
pde = ldl_phys(pde_addr); |
711 |
if (!(pde & PG_PRESENT_MASK)) {
|
712 |
error_code = 0;
|
713 |
goto do_fault;
|
714 |
} |
715 |
/* if PSE bit is set, then we use a 4MB page */
|
716 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
717 |
page_size = 4096 * 1024; |
718 |
if (is_user) {
|
719 |
if (!(pde & PG_USER_MASK))
|
720 |
goto do_fault_protect;
|
721 |
if (is_write && !(pde & PG_RW_MASK))
|
722 |
goto do_fault_protect;
|
723 |
} else {
|
724 |
if ((env->cr[0] & CR0_WP_MASK) && |
725 |
is_write && !(pde & PG_RW_MASK)) |
726 |
goto do_fault_protect;
|
727 |
} |
728 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
729 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
730 |
pde |= PG_ACCESSED_MASK; |
731 |
if (is_dirty)
|
732 |
pde |= PG_DIRTY_MASK; |
733 |
stl_phys_notdirty(pde_addr, pde); |
734 |
} |
735 |
|
736 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
737 |
ptep = pte; |
738 |
virt_addr = addr & ~(page_size - 1);
|
739 |
} else {
|
740 |
if (!(pde & PG_ACCESSED_MASK)) {
|
741 |
pde |= PG_ACCESSED_MASK; |
742 |
stl_phys_notdirty(pde_addr, pde); |
743 |
} |
744 |
|
745 |
/* page directory entry */
|
746 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
747 |
env->a20_mask; |
748 |
pte = ldl_phys(pte_addr); |
749 |
if (!(pte & PG_PRESENT_MASK)) {
|
750 |
error_code = 0;
|
751 |
goto do_fault;
|
752 |
} |
753 |
/* combine pde and pte user and rw protections */
|
754 |
ptep = pte & pde; |
755 |
if (is_user) {
|
756 |
if (!(ptep & PG_USER_MASK))
|
757 |
goto do_fault_protect;
|
758 |
if (is_write && !(ptep & PG_RW_MASK))
|
759 |
goto do_fault_protect;
|
760 |
} else {
|
761 |
if ((env->cr[0] & CR0_WP_MASK) && |
762 |
is_write && !(ptep & PG_RW_MASK)) |
763 |
goto do_fault_protect;
|
764 |
} |
765 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
766 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
767 |
pte |= PG_ACCESSED_MASK; |
768 |
if (is_dirty)
|
769 |
pte |= PG_DIRTY_MASK; |
770 |
stl_phys_notdirty(pte_addr, pte); |
771 |
} |
772 |
page_size = 4096;
|
773 |
virt_addr = addr & ~0xfff;
|
774 |
} |
775 |
} |
776 |
/* the page can be put in the TLB */
|
777 |
prot = PAGE_READ; |
778 |
if (!(ptep & PG_NX_MASK))
|
779 |
prot |= PAGE_EXEC; |
780 |
if (pte & PG_DIRTY_MASK) {
|
781 |
/* only set write access if already dirty... otherwise wait
|
782 |
for dirty access */
|
783 |
if (is_user) {
|
784 |
if (ptep & PG_RW_MASK)
|
785 |
prot |= PAGE_WRITE; |
786 |
} else {
|
787 |
if (!(env->cr[0] & CR0_WP_MASK) || |
788 |
(ptep & PG_RW_MASK)) |
789 |
prot |= PAGE_WRITE; |
790 |
} |
791 |
} |
792 |
do_mapping:
|
793 |
pte = pte & env->a20_mask; |
794 |
|
795 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
796 |
avoid filling it too fast */
|
797 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
798 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
799 |
vaddr = virt_addr + page_offset; |
800 |
|
801 |
tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size); |
802 |
return 0; |
803 |
do_fault_protect:
|
804 |
error_code = PG_ERROR_P_MASK; |
805 |
do_fault:
|
806 |
error_code |= (is_write << PG_ERROR_W_BIT); |
807 |
if (is_user)
|
808 |
error_code |= PG_ERROR_U_MASK; |
809 |
if (is_write1 == 2 && |
810 |
(env->efer & MSR_EFER_NXE) && |
811 |
(env->cr[4] & CR4_PAE_MASK))
|
812 |
error_code |= PG_ERROR_I_D_MASK; |
813 |
if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
814 |
/* cr2 is not modified in case of exceptions */
|
815 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
816 |
addr); |
817 |
} else {
|
818 |
env->cr[2] = addr;
|
819 |
} |
820 |
env->error_code = error_code; |
821 |
env->exception_index = EXCP0E_PAGE; |
822 |
return 1; |
823 |
} |
824 |
|
825 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
826 |
{ |
827 |
target_ulong pde_addr, pte_addr; |
828 |
uint64_t pte; |
829 |
target_phys_addr_t paddr; |
830 |
uint32_t page_offset; |
831 |
int page_size;
|
832 |
|
833 |
if (env->cr[4] & CR4_PAE_MASK) { |
834 |
target_ulong pdpe_addr; |
835 |
uint64_t pde, pdpe; |
836 |
|
837 |
#ifdef TARGET_X86_64
|
838 |
if (env->hflags & HF_LMA_MASK) {
|
839 |
uint64_t pml4e_addr, pml4e; |
840 |
int32_t sext; |
841 |
|
842 |
/* test virtual address sign extension */
|
843 |
sext = (int64_t)addr >> 47;
|
844 |
if (sext != 0 && sext != -1) |
845 |
return -1; |
846 |
|
847 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
848 |
env->a20_mask; |
849 |
pml4e = ldq_phys(pml4e_addr); |
850 |
if (!(pml4e & PG_PRESENT_MASK))
|
851 |
return -1; |
852 |
|
853 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
854 |
env->a20_mask; |
855 |
pdpe = ldq_phys(pdpe_addr); |
856 |
if (!(pdpe & PG_PRESENT_MASK))
|
857 |
return -1; |
858 |
} else
|
859 |
#endif
|
860 |
{ |
861 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
862 |
env->a20_mask; |
863 |
pdpe = ldq_phys(pdpe_addr); |
864 |
if (!(pdpe & PG_PRESENT_MASK))
|
865 |
return -1; |
866 |
} |
867 |
|
868 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
869 |
env->a20_mask; |
870 |
pde = ldq_phys(pde_addr); |
871 |
if (!(pde & PG_PRESENT_MASK)) {
|
872 |
return -1; |
873 |
} |
874 |
if (pde & PG_PSE_MASK) {
|
875 |
/* 2 MB page */
|
876 |
page_size = 2048 * 1024; |
877 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
878 |
} else {
|
879 |
/* 4 KB page */
|
880 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
881 |
env->a20_mask; |
882 |
page_size = 4096;
|
883 |
pte = ldq_phys(pte_addr); |
884 |
} |
885 |
if (!(pte & PG_PRESENT_MASK))
|
886 |
return -1; |
887 |
} else {
|
888 |
uint32_t pde; |
889 |
|
890 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
891 |
pte = addr; |
892 |
page_size = 4096;
|
893 |
} else {
|
894 |
/* page directory entry */
|
895 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
896 |
pde = ldl_phys(pde_addr); |
897 |
if (!(pde & PG_PRESENT_MASK))
|
898 |
return -1; |
899 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
900 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
901 |
page_size = 4096 * 1024; |
902 |
} else {
|
903 |
/* page directory entry */
|
904 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
905 |
pte = ldl_phys(pte_addr); |
906 |
if (!(pte & PG_PRESENT_MASK))
|
907 |
return -1; |
908 |
page_size = 4096;
|
909 |
} |
910 |
} |
911 |
pte = pte & env->a20_mask; |
912 |
} |
913 |
|
914 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
915 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
916 |
return paddr;
|
917 |
} |
918 |
|
919 |
void hw_breakpoint_insert(CPUState *env, int index) |
920 |
{ |
921 |
int type, err = 0; |
922 |
|
923 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
924 |
case 0: |
925 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
926 |
err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU, |
927 |
&env->cpu_breakpoint[index]); |
928 |
break;
|
929 |
case 1: |
930 |
type = BP_CPU | BP_MEM_WRITE; |
931 |
goto insert_wp;
|
932 |
case 2: |
933 |
/* No support for I/O watchpoints yet */
|
934 |
break;
|
935 |
case 3: |
936 |
type = BP_CPU | BP_MEM_ACCESS; |
937 |
insert_wp:
|
938 |
err = cpu_watchpoint_insert(env, env->dr[index], |
939 |
hw_breakpoint_len(env->dr[7], index),
|
940 |
type, &env->cpu_watchpoint[index]); |
941 |
break;
|
942 |
} |
943 |
if (err)
|
944 |
env->cpu_breakpoint[index] = NULL;
|
945 |
} |
946 |
|
947 |
void hw_breakpoint_remove(CPUState *env, int index) |
948 |
{ |
949 |
if (!env->cpu_breakpoint[index])
|
950 |
return;
|
951 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
952 |
case 0: |
953 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
954 |
cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]); |
955 |
break;
|
956 |
case 1: |
957 |
case 3: |
958 |
cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]); |
959 |
break;
|
960 |
case 2: |
961 |
/* No support for I/O watchpoints yet */
|
962 |
break;
|
963 |
} |
964 |
} |
965 |
|
966 |
int check_hw_breakpoints(CPUState *env, int force_dr6_update) |
967 |
{ |
968 |
target_ulong dr6; |
969 |
int reg, type;
|
970 |
int hit_enabled = 0; |
971 |
|
972 |
dr6 = env->dr[6] & ~0xf; |
973 |
for (reg = 0; reg < 4; reg++) { |
974 |
type = hw_breakpoint_type(env->dr[7], reg);
|
975 |
if ((type == 0 && env->dr[reg] == env->eip) || |
976 |
((type & 1) && env->cpu_watchpoint[reg] &&
|
977 |
(env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) { |
978 |
dr6 |= 1 << reg;
|
979 |
if (hw_breakpoint_enabled(env->dr[7], reg)) |
980 |
hit_enabled = 1;
|
981 |
} |
982 |
} |
983 |
if (hit_enabled || force_dr6_update)
|
984 |
env->dr[6] = dr6;
|
985 |
return hit_enabled;
|
986 |
} |
987 |
|
988 |
static CPUDebugExcpHandler *prev_debug_excp_handler;
|
989 |
|
990 |
void raise_exception_env(int exception_index, CPUState *env); |
991 |
|
992 |
static void breakpoint_handler(CPUState *env) |
993 |
{ |
994 |
CPUBreakpoint *bp; |
995 |
|
996 |
if (env->watchpoint_hit) {
|
997 |
if (env->watchpoint_hit->flags & BP_CPU) {
|
998 |
env->watchpoint_hit = NULL;
|
999 |
if (check_hw_breakpoints(env, 0)) |
1000 |
raise_exception_env(EXCP01_DB, env); |
1001 |
else
|
1002 |
cpu_resume_from_signal(env, NULL);
|
1003 |
} |
1004 |
} else {
|
1005 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) |
1006 |
if (bp->pc == env->eip) {
|
1007 |
if (bp->flags & BP_CPU) {
|
1008 |
check_hw_breakpoints(env, 1);
|
1009 |
raise_exception_env(EXCP01_DB, env); |
1010 |
} |
1011 |
break;
|
1012 |
} |
1013 |
} |
1014 |
if (prev_debug_excp_handler)
|
1015 |
prev_debug_excp_handler(env); |
1016 |
} |
1017 |
|
1018 |
/* This should come from sysemu.h - if we could include it here... */
|
1019 |
void qemu_system_reset_request(void); |
1020 |
|
1021 |
void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, |
1022 |
uint64_t mcg_status, uint64_t addr, uint64_t misc) |
1023 |
{ |
1024 |
uint64_t mcg_cap = cenv->mcg_cap; |
1025 |
unsigned bank_num = mcg_cap & 0xff; |
1026 |
uint64_t *banks = cenv->mce_banks; |
1027 |
|
1028 |
if (bank >= bank_num || !(status & MCI_STATUS_VAL))
|
1029 |
return;
|
1030 |
|
1031 |
/*
|
1032 |
* if MSR_MCG_CTL is not all 1s, the uncorrected error
|
1033 |
* reporting is disabled
|
1034 |
*/
|
1035 |
if ((status & MCI_STATUS_UC) && (mcg_cap & MCG_CTL_P) &&
|
1036 |
cenv->mcg_ctl != ~(uint64_t)0)
|
1037 |
return;
|
1038 |
banks += 4 * bank;
|
1039 |
/*
|
1040 |
* if MSR_MCi_CTL is not all 1s, the uncorrected error
|
1041 |
* reporting is disabled for the bank
|
1042 |
*/
|
1043 |
if ((status & MCI_STATUS_UC) && banks[0] != ~(uint64_t)0) |
1044 |
return;
|
1045 |
if (status & MCI_STATUS_UC) {
|
1046 |
if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
|
1047 |
!(cenv->cr[4] & CR4_MCE_MASK)) {
|
1048 |
fprintf(stderr, "injects mce exception while previous "
|
1049 |
"one is in progress!\n");
|
1050 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
1051 |
qemu_system_reset_request(); |
1052 |
return;
|
1053 |
} |
1054 |
if (banks[1] & MCI_STATUS_VAL) |
1055 |
status |= MCI_STATUS_OVER; |
1056 |
banks[2] = addr;
|
1057 |
banks[3] = misc;
|
1058 |
cenv->mcg_status = mcg_status; |
1059 |
banks[1] = status;
|
1060 |
cpu_interrupt(cenv, CPU_INTERRUPT_MCE); |
1061 |
} else if (!(banks[1] & MCI_STATUS_VAL) |
1062 |
|| !(banks[1] & MCI_STATUS_UC)) {
|
1063 |
if (banks[1] & MCI_STATUS_VAL) |
1064 |
status |= MCI_STATUS_OVER; |
1065 |
banks[2] = addr;
|
1066 |
banks[3] = misc;
|
1067 |
banks[1] = status;
|
1068 |
} else
|
1069 |
banks[1] |= MCI_STATUS_OVER;
|
1070 |
} |
1071 |
#endif /* !CONFIG_USER_ONLY */ |
1072 |
|
1073 |
static void mce_init(CPUX86State *cenv) |
1074 |
{ |
1075 |
unsigned int bank, bank_num; |
1076 |
|
1077 |
if (((cenv->cpuid_version >> 8)&0xf) >= 6 |
1078 |
&& (cenv->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA)) { |
1079 |
cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF; |
1080 |
cenv->mcg_ctl = ~(uint64_t)0;
|
1081 |
bank_num = MCE_BANKS_DEF; |
1082 |
for (bank = 0; bank < bank_num; bank++) |
1083 |
cenv->mce_banks[bank*4] = ~(uint64_t)0; |
1084 |
} |
1085 |
} |
1086 |
|
1087 |
int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector, |
1088 |
target_ulong *base, unsigned int *limit, |
1089 |
unsigned int *flags) |
1090 |
{ |
1091 |
SegmentCache *dt; |
1092 |
target_ulong ptr; |
1093 |
uint32_t e1, e2; |
1094 |
int index;
|
1095 |
|
1096 |
if (selector & 0x4) |
1097 |
dt = &env->ldt; |
1098 |
else
|
1099 |
dt = &env->gdt; |
1100 |
index = selector & ~7;
|
1101 |
ptr = dt->base + index; |
1102 |
if ((index + 7) > dt->limit |
1103 |
|| cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0 |
1104 |
|| cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0) |
1105 |
return 0; |
1106 |
|
1107 |
*base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
1108 |
*limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
1109 |
if (e2 & DESC_G_MASK)
|
1110 |
*limit = (*limit << 12) | 0xfff; |
1111 |
*flags = e2; |
1112 |
|
1113 |
return 1; |
1114 |
} |
1115 |
|
1116 |
CPUX86State *cpu_x86_init(const char *cpu_model) |
1117 |
{ |
1118 |
CPUX86State *env; |
1119 |
static int inited; |
1120 |
|
1121 |
env = qemu_mallocz(sizeof(CPUX86State));
|
1122 |
cpu_exec_init(env); |
1123 |
env->cpu_model_str = cpu_model; |
1124 |
|
1125 |
/* init various static tables */
|
1126 |
if (!inited) {
|
1127 |
inited = 1;
|
1128 |
optimize_flags_init(); |
1129 |
#ifndef CONFIG_USER_ONLY
|
1130 |
prev_debug_excp_handler = |
1131 |
cpu_set_debug_excp_handler(breakpoint_handler); |
1132 |
#endif
|
1133 |
} |
1134 |
if (cpu_x86_register(env, cpu_model) < 0) { |
1135 |
cpu_x86_close(env); |
1136 |
return NULL; |
1137 |
} |
1138 |
mce_init(env); |
1139 |
|
1140 |
qemu_init_vcpu(env); |
1141 |
|
1142 |
return env;
|
1143 |
} |
1144 |
|
1145 |
#if !defined(CONFIG_USER_ONLY)
|
1146 |
void do_cpu_init(CPUState *env)
|
1147 |
{ |
1148 |
int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
|
1149 |
cpu_reset(env); |
1150 |
env->interrupt_request = sipi; |
1151 |
apic_init_reset(env); |
1152 |
} |
1153 |
|
1154 |
void do_cpu_sipi(CPUState *env)
|
1155 |
{ |
1156 |
apic_sipi(env); |
1157 |
} |
1158 |
#else
|
1159 |
void do_cpu_init(CPUState *env)
|
1160 |
{ |
1161 |
} |
1162 |
void do_cpu_sipi(CPUState *env)
|
1163 |
{ |
1164 |
} |
1165 |
#endif
|