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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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#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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#include "kvm_x86.h" |
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|
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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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|
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memset(env, 0, offsetof(CPUX86State, breakpoints));
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|
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tlb_flush(env, 1);
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env->old_exception = -1;
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|
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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; |
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|
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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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|
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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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|
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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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|
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env->eflags = 0x2;
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|
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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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} |
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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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static void cpu_x86_version(CPUState *env, int *family, int *model) |
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{
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int cpuver = env->cpuid_version;
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if (family == NULL || model == NULL) { |
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return;
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} |
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*family = (cpuver >> 8) & 0x0f; |
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*model = ((cpuver >> 12) & 0xf0) + ((cpuver >> 4) & 0x0f); |
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} |
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/* Broadcast MCA signal for processor version 06H_EH and above */
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int cpu_x86_support_mca_broadcast(CPUState *env)
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{
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int family = 0; |
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int model = 0; |
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cpu_x86_version(env, &family, &model); |
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if ((family == 6 && model >= 14) || family > 6) { |
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return 1; |
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} |
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return 0; |
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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, fprintf_function cpu_fprintf, |
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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 & 0x00ffff00);
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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 & 0x00ffff00);
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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, "%s",
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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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|
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#define DUMP_CODE_BYTES_TOTAL 50 |
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#define DUMP_CODE_BYTES_BACKWARD 20 |
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|
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void cpu_dump_state(CPUState *env, FILE *f, fprintf_function cpu_fprintf,
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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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|
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cpu_synchronize_state(env); |
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|
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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); |
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} 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], |
| 307 |
(uint32_t)env->regs[R_EBX], |
| 308 |
(uint32_t)env->regs[R_ECX], |
| 309 |
(uint32_t)env->regs[R_EDX], |
| 310 |
(uint32_t)env->regs[R_ESI], |
| 311 |
(uint32_t)env->regs[R_EDI], |
| 312 |
(uint32_t)env->regs[R_EBP], |
| 313 |
(uint32_t)env->regs[R_ESP], |
| 314 |
(uint32_t)env->eip, eflags, |
| 315 |
eflags & DF_MASK ? 'D' : '-', |
| 316 |
eflags & CC_O ? 'O' : '-', |
| 317 |
eflags & CC_S ? 'S' : '-', |
| 318 |
eflags & CC_Z ? 'Z' : '-', |
| 319 |
eflags & CC_A ? 'A' : '-', |
| 320 |
eflags & CC_P ? 'P' : '-', |
| 321 |
eflags & CC_C ? 'C' : '-', |
| 322 |
env->hflags & HF_CPL_MASK, |
| 323 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 324 |
(env->a20_mask >> 20) & 1, |
| 325 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 326 |
env->halted); |
| 327 |
} |
| 328 |
|
| 329 |
for(i = 0; i < 6; i++) { |
| 330 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i], |
| 331 |
&env->segs[i]); |
| 332 |
} |
| 333 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
|
| 334 |
cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
|
| 335 |
|
| 336 |
#ifdef TARGET_X86_64
|
| 337 |
if (env->hflags & HF_LMA_MASK) {
|
| 338 |
cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
| 339 |
env->gdt.base, env->gdt.limit); |
| 340 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
| 341 |
env->idt.base, env->idt.limit); |
| 342 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
| 343 |
(uint32_t)env->cr[0],
|
| 344 |
env->cr[2],
|
| 345 |
env->cr[3],
|
| 346 |
(uint32_t)env->cr[4]);
|
| 347 |
for(i = 0; i < 4; i++) |
| 348 |
cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
| 349 |
cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
| 350 |
env->dr[6], env->dr[7]); |
| 351 |
} else
|
| 352 |
#endif
|
| 353 |
{
|
| 354 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
| 355 |
(uint32_t)env->gdt.base, env->gdt.limit); |
| 356 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
| 357 |
(uint32_t)env->idt.base, env->idt.limit); |
| 358 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
| 359 |
(uint32_t)env->cr[0],
|
| 360 |
(uint32_t)env->cr[2],
|
| 361 |
(uint32_t)env->cr[3],
|
| 362 |
(uint32_t)env->cr[4]);
|
| 363 |
for(i = 0; i < 4; i++) { |
| 364 |
cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]); |
| 365 |
} |
| 366 |
cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n", |
| 367 |
env->dr[6], env->dr[7]); |
| 368 |
} |
| 369 |
if (flags & X86_DUMP_CCOP) {
|
| 370 |
if ((unsigned)env->cc_op < CC_OP_NB) |
| 371 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
| 372 |
else
|
| 373 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
| 374 |
#ifdef TARGET_X86_64
|
| 375 |
if (env->hflags & HF_CS64_MASK) {
|
| 376 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
| 377 |
env->cc_src, env->cc_dst, |
| 378 |
cc_op_name); |
| 379 |
} else
|
| 380 |
#endif
|
| 381 |
{
|
| 382 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
| 383 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
| 384 |
cc_op_name); |
| 385 |
} |
| 386 |
} |
| 387 |
cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer); |
| 388 |
if (flags & X86_DUMP_FPU) {
|
| 389 |
int fptag;
|
| 390 |
fptag = 0;
|
| 391 |
for(i = 0; i < 8; i++) { |
| 392 |
fptag |= ((!env->fptags[i]) << i); |
| 393 |
} |
| 394 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
| 395 |
env->fpuc, |
| 396 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
| 397 |
env->fpstt, |
| 398 |
fptag, |
| 399 |
env->mxcsr); |
| 400 |
for(i=0;i<8;i++) { |
| 401 |
#if defined(USE_X86LDOUBLE)
|
| 402 |
union {
|
| 403 |
long double d; |
| 404 |
struct {
|
| 405 |
uint64_t lower; |
| 406 |
uint16_t upper; |
| 407 |
} l; |
| 408 |
} tmp; |
| 409 |
tmp.d = env->fpregs[i].d; |
| 410 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
| 411 |
i, tmp.l.lower, tmp.l.upper); |
| 412 |
#else
|
| 413 |
cpu_fprintf(f, "FPR%d=%016" PRIx64,
|
| 414 |
i, env->fpregs[i].mmx.q); |
| 415 |
#endif
|
| 416 |
if ((i & 1) == 1) |
| 417 |
cpu_fprintf(f, "\n");
|
| 418 |
else
|
| 419 |
cpu_fprintf(f, " ");
|
| 420 |
} |
| 421 |
if (env->hflags & HF_CS64_MASK)
|
| 422 |
nb = 16;
|
| 423 |
else
|
| 424 |
nb = 8;
|
| 425 |
for(i=0;i<nb;i++) { |
| 426 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
| 427 |
i, |
| 428 |
env->xmm_regs[i].XMM_L(3),
|
| 429 |
env->xmm_regs[i].XMM_L(2),
|
| 430 |
env->xmm_regs[i].XMM_L(1),
|
| 431 |
env->xmm_regs[i].XMM_L(0));
|
| 432 |
if ((i & 1) == 1) |
| 433 |
cpu_fprintf(f, "\n");
|
| 434 |
else
|
| 435 |
cpu_fprintf(f, " ");
|
| 436 |
} |
| 437 |
} |
| 438 |
if (flags & CPU_DUMP_CODE) {
|
| 439 |
target_ulong base = env->segs[R_CS].base + env->eip; |
| 440 |
target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD); |
| 441 |
uint8_t code; |
| 442 |
char codestr[3]; |
| 443 |
|
| 444 |
cpu_fprintf(f, "Code=");
|
| 445 |
for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) { |
| 446 |
if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) { |
| 447 |
snprintf(codestr, sizeof(codestr), "%02x", code); |
| 448 |
} else {
|
| 449 |
snprintf(codestr, sizeof(codestr), "??"); |
| 450 |
} |
| 451 |
cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "", |
| 452 |
i == offs ? "<" : "", codestr, i == offs ? ">" : ""); |
| 453 |
} |
| 454 |
cpu_fprintf(f, "\n");
|
| 455 |
} |
| 456 |
} |
| 457 |
|
| 458 |
/***********************************************************/
|
| 459 |
/* x86 mmu */
|
| 460 |
/* XXX: add PGE support */
|
| 461 |
|
| 462 |
void cpu_x86_set_a20(CPUX86State *env, int a20_state) |
| 463 |
{
|
| 464 |
a20_state = (a20_state != 0);
|
| 465 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
| 466 |
#if defined(DEBUG_MMU)
|
| 467 |
printf("A20 update: a20=%d\n", a20_state);
|
| 468 |
#endif
|
| 469 |
/* if the cpu is currently executing code, we must unlink it and
|
| 470 |
all the potentially executing TB */
|
| 471 |
cpu_interrupt(env, CPU_INTERRUPT_EXITTB); |
| 472 |
|
| 473 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
| 474 |
we must flush everything */
|
| 475 |
tlb_flush(env, 1);
|
| 476 |
env->a20_mask = ~(1 << 20) | (a20_state << 20); |
| 477 |
} |
| 478 |
} |
| 479 |
|
| 480 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
| 481 |
{
|
| 482 |
int pe_state;
|
| 483 |
|
| 484 |
#if defined(DEBUG_MMU)
|
| 485 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
| 486 |
#endif
|
| 487 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
| 488 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
| 489 |
tlb_flush(env, 1);
|
| 490 |
} |
| 491 |
|
| 492 |
#ifdef TARGET_X86_64
|
| 493 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
| 494 |
(env->efer & MSR_EFER_LME)) {
|
| 495 |
/* enter in long mode */
|
| 496 |
/* XXX: generate an exception */
|
| 497 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
| 498 |
return;
|
| 499 |
env->efer |= MSR_EFER_LMA; |
| 500 |
env->hflags |= HF_LMA_MASK; |
| 501 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
| 502 |
(env->efer & MSR_EFER_LMA)) {
|
| 503 |
/* exit long mode */
|
| 504 |
env->efer &= ~MSR_EFER_LMA; |
| 505 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
| 506 |
env->eip &= 0xffffffff;
|
| 507 |
} |
| 508 |
#endif
|
| 509 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
| 510 |
|
| 511 |
/* update PE flag in hidden flags */
|
| 512 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
| 513 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
| 514 |
/* ensure that ADDSEG is always set in real mode */
|
| 515 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
| 516 |
/* update FPU flags */
|
| 517 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
| 518 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
| 519 |
} |
| 520 |
|
| 521 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
| 522 |
the PDPT */
|
| 523 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
| 524 |
{
|
| 525 |
env->cr[3] = new_cr3;
|
| 526 |
if (env->cr[0] & CR0_PG_MASK) { |
| 527 |
#if defined(DEBUG_MMU)
|
| 528 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
| 529 |
#endif
|
| 530 |
tlb_flush(env, 0);
|
| 531 |
} |
| 532 |
} |
| 533 |
|
| 534 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
| 535 |
{
|
| 536 |
#if defined(DEBUG_MMU)
|
| 537 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
| 538 |
#endif
|
| 539 |
if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
|
| 540 |
(env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
|
| 541 |
tlb_flush(env, 1);
|
| 542 |
} |
| 543 |
/* SSE handling */
|
| 544 |
if (!(env->cpuid_features & CPUID_SSE))
|
| 545 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
| 546 |
if (new_cr4 & CR4_OSFXSR_MASK)
|
| 547 |
env->hflags |= HF_OSFXSR_MASK; |
| 548 |
else
|
| 549 |
env->hflags &= ~HF_OSFXSR_MASK; |
| 550 |
|
| 551 |
env->cr[4] = new_cr4;
|
| 552 |
} |
| 553 |
|
| 554 |
#if defined(CONFIG_USER_ONLY)
|
| 555 |
|
| 556 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 557 |
int is_write, int mmu_idx, int is_softmmu) |
| 558 |
{
|
| 559 |
/* user mode only emulation */
|
| 560 |
is_write &= 1;
|
| 561 |
env->cr[2] = addr;
|
| 562 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
| 563 |
env->error_code |= PG_ERROR_U_MASK; |
| 564 |
env->exception_index = EXCP0E_PAGE; |
| 565 |
return 1; |
| 566 |
} |
| 567 |
|
| 568 |
#else
|
| 569 |
|
| 570 |
/* XXX: This value should match the one returned by CPUID
|
| 571 |
* and in exec.c */
|
| 572 |
# if defined(TARGET_X86_64)
|
| 573 |
# define PHYS_ADDR_MASK 0xfffffff000LL |
| 574 |
# else
|
| 575 |
# define PHYS_ADDR_MASK 0xffffff000LL |
| 576 |
# endif
|
| 577 |
|
| 578 |
/* return value:
|
| 579 |
-1 = cannot handle fault
|
| 580 |
0 = nothing more to do
|
| 581 |
1 = generate PF fault
|
| 582 |
*/
|
| 583 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 584 |
int is_write1, int mmu_idx, int is_softmmu) |
| 585 |
{
|
| 586 |
uint64_t ptep, pte; |
| 587 |
target_ulong pde_addr, pte_addr; |
| 588 |
int error_code, is_dirty, prot, page_size, is_write, is_user;
|
| 589 |
target_phys_addr_t paddr; |
| 590 |
uint32_t page_offset; |
| 591 |
target_ulong vaddr, virt_addr; |
| 592 |
|
| 593 |
is_user = mmu_idx == MMU_USER_IDX; |
| 594 |
#if defined(DEBUG_MMU)
|
| 595 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
| 596 |
addr, is_write1, is_user, env->eip); |
| 597 |
#endif
|
| 598 |
is_write = is_write1 & 1;
|
| 599 |
|
| 600 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 601 |
pte = addr; |
| 602 |
virt_addr = addr & TARGET_PAGE_MASK; |
| 603 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 604 |
page_size = 4096;
|
| 605 |
goto do_mapping;
|
| 606 |
} |
| 607 |
|
| 608 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 609 |
uint64_t pde, pdpe; |
| 610 |
target_ulong pdpe_addr; |
| 611 |
|
| 612 |
#ifdef TARGET_X86_64
|
| 613 |
if (env->hflags & HF_LMA_MASK) {
|
| 614 |
uint64_t pml4e_addr, pml4e; |
| 615 |
int32_t sext; |
| 616 |
|
| 617 |
/* test virtual address sign extension */
|
| 618 |
sext = (int64_t)addr >> 47;
|
| 619 |
if (sext != 0 && sext != -1) { |
| 620 |
env->error_code = 0;
|
| 621 |
env->exception_index = EXCP0D_GPF; |
| 622 |
return 1; |
| 623 |
} |
| 624 |
|
| 625 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 626 |
env->a20_mask; |
| 627 |
pml4e = ldq_phys(pml4e_addr); |
| 628 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
| 629 |
error_code = 0;
|
| 630 |
goto do_fault;
|
| 631 |
} |
| 632 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
| 633 |
error_code = PG_ERROR_RSVD_MASK; |
| 634 |
goto do_fault;
|
| 635 |
} |
| 636 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
| 637 |
pml4e |= PG_ACCESSED_MASK; |
| 638 |
stl_phys_notdirty(pml4e_addr, pml4e); |
| 639 |
} |
| 640 |
ptep = pml4e ^ PG_NX_MASK; |
| 641 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
| 642 |
env->a20_mask; |
| 643 |
pdpe = ldq_phys(pdpe_addr); |
| 644 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 645 |
error_code = 0;
|
| 646 |
goto do_fault;
|
| 647 |
} |
| 648 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
| 649 |
error_code = PG_ERROR_RSVD_MASK; |
| 650 |
goto do_fault;
|
| 651 |
} |
| 652 |
ptep &= pdpe ^ PG_NX_MASK; |
| 653 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
| 654 |
pdpe |= PG_ACCESSED_MASK; |
| 655 |
stl_phys_notdirty(pdpe_addr, pdpe); |
| 656 |
} |
| 657 |
} else
|
| 658 |
#endif
|
| 659 |
{
|
| 660 |
/* XXX: load them when cr3 is loaded ? */
|
| 661 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 662 |
env->a20_mask; |
| 663 |
pdpe = ldq_phys(pdpe_addr); |
| 664 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 665 |
error_code = 0;
|
| 666 |
goto do_fault;
|
| 667 |
} |
| 668 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| 669 |
} |
| 670 |
|
| 671 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
| 672 |
env->a20_mask; |
| 673 |
pde = ldq_phys(pde_addr); |
| 674 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 675 |
error_code = 0;
|
| 676 |
goto do_fault;
|
| 677 |
} |
| 678 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
| 679 |
error_code = PG_ERROR_RSVD_MASK; |
| 680 |
goto do_fault;
|
| 681 |
} |
| 682 |
ptep &= pde ^ PG_NX_MASK; |
| 683 |
if (pde & PG_PSE_MASK) {
|
| 684 |
/* 2 MB page */
|
| 685 |
page_size = 2048 * 1024; |
| 686 |
ptep ^= PG_NX_MASK; |
| 687 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 688 |
goto do_fault_protect;
|
| 689 |
if (is_user) {
|
| 690 |
if (!(ptep & PG_USER_MASK))
|
| 691 |
goto do_fault_protect;
|
| 692 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 693 |
goto do_fault_protect;
|
| 694 |
} else {
|
| 695 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 696 |
is_write && !(ptep & PG_RW_MASK)) |
| 697 |
goto do_fault_protect;
|
| 698 |
} |
| 699 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 700 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 701 |
pde |= PG_ACCESSED_MASK; |
| 702 |
if (is_dirty)
|
| 703 |
pde |= PG_DIRTY_MASK; |
| 704 |
stl_phys_notdirty(pde_addr, pde); |
| 705 |
} |
| 706 |
/* align to page_size */
|
| 707 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
| 708 |
virt_addr = addr & ~(page_size - 1);
|
| 709 |
} else {
|
| 710 |
/* 4 KB page */
|
| 711 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 712 |
pde |= PG_ACCESSED_MASK; |
| 713 |
stl_phys_notdirty(pde_addr, pde); |
| 714 |
} |
| 715 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
| 716 |
env->a20_mask; |
| 717 |
pte = ldq_phys(pte_addr); |
| 718 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 719 |
error_code = 0;
|
| 720 |
goto do_fault;
|
| 721 |
} |
| 722 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
| 723 |
error_code = PG_ERROR_RSVD_MASK; |
| 724 |
goto do_fault;
|
| 725 |
} |
| 726 |
/* combine pde and pte nx, user and rw protections */
|
| 727 |
ptep &= pte ^ PG_NX_MASK; |
| 728 |
ptep ^= PG_NX_MASK; |
| 729 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 730 |
goto do_fault_protect;
|
| 731 |
if (is_user) {
|
| 732 |
if (!(ptep & PG_USER_MASK))
|
| 733 |
goto do_fault_protect;
|
| 734 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 735 |
goto do_fault_protect;
|
| 736 |
} else {
|
| 737 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 738 |
is_write && !(ptep & PG_RW_MASK)) |
| 739 |
goto do_fault_protect;
|
| 740 |
} |
| 741 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 742 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 743 |
pte |= PG_ACCESSED_MASK; |
| 744 |
if (is_dirty)
|
| 745 |
pte |= PG_DIRTY_MASK; |
| 746 |
stl_phys_notdirty(pte_addr, pte); |
| 747 |
} |
| 748 |
page_size = 4096;
|
| 749 |
virt_addr = addr & ~0xfff;
|
| 750 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
| 751 |
} |
| 752 |
} else {
|
| 753 |
uint32_t pde; |
| 754 |
|
| 755 |
/* page directory entry */
|
| 756 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
| 757 |
env->a20_mask; |
| 758 |
pde = ldl_phys(pde_addr); |
| 759 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 760 |
error_code = 0;
|
| 761 |
goto do_fault;
|
| 762 |
} |
| 763 |
/* if PSE bit is set, then we use a 4MB page */
|
| 764 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 765 |
page_size = 4096 * 1024; |
| 766 |
if (is_user) {
|
| 767 |
if (!(pde & PG_USER_MASK))
|
| 768 |
goto do_fault_protect;
|
| 769 |
if (is_write && !(pde & PG_RW_MASK))
|
| 770 |
goto do_fault_protect;
|
| 771 |
} else {
|
| 772 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 773 |
is_write && !(pde & PG_RW_MASK)) |
| 774 |
goto do_fault_protect;
|
| 775 |
} |
| 776 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 777 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 778 |
pde |= PG_ACCESSED_MASK; |
| 779 |
if (is_dirty)
|
| 780 |
pde |= PG_DIRTY_MASK; |
| 781 |
stl_phys_notdirty(pde_addr, pde); |
| 782 |
} |
| 783 |
|
| 784 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 785 |
ptep = pte; |
| 786 |
virt_addr = addr & ~(page_size - 1);
|
| 787 |
} else {
|
| 788 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 789 |
pde |= PG_ACCESSED_MASK; |
| 790 |
stl_phys_notdirty(pde_addr, pde); |
| 791 |
} |
| 792 |
|
| 793 |
/* page directory entry */
|
| 794 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
| 795 |
env->a20_mask; |
| 796 |
pte = ldl_phys(pte_addr); |
| 797 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 798 |
error_code = 0;
|
| 799 |
goto do_fault;
|
| 800 |
} |
| 801 |
/* combine pde and pte user and rw protections */
|
| 802 |
ptep = pte & pde; |
| 803 |
if (is_user) {
|
| 804 |
if (!(ptep & PG_USER_MASK))
|
| 805 |
goto do_fault_protect;
|
| 806 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 807 |
goto do_fault_protect;
|
| 808 |
} else {
|
| 809 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 810 |
is_write && !(ptep & PG_RW_MASK)) |
| 811 |
goto do_fault_protect;
|
| 812 |
} |
| 813 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 814 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 815 |
pte |= PG_ACCESSED_MASK; |
| 816 |
if (is_dirty)
|
| 817 |
pte |= PG_DIRTY_MASK; |
| 818 |
stl_phys_notdirty(pte_addr, pte); |
| 819 |
} |
| 820 |
page_size = 4096;
|
| 821 |
virt_addr = addr & ~0xfff;
|
| 822 |
} |
| 823 |
} |
| 824 |
/* the page can be put in the TLB */
|
| 825 |
prot = PAGE_READ; |
| 826 |
if (!(ptep & PG_NX_MASK))
|
| 827 |
prot |= PAGE_EXEC; |
| 828 |
if (pte & PG_DIRTY_MASK) {
|
| 829 |
/* only set write access if already dirty... otherwise wait
|
| 830 |
for dirty access */
|
| 831 |
if (is_user) {
|
| 832 |
if (ptep & PG_RW_MASK)
|
| 833 |
prot |= PAGE_WRITE; |
| 834 |
} else {
|
| 835 |
if (!(env->cr[0] & CR0_WP_MASK) || |
| 836 |
(ptep & PG_RW_MASK)) |
| 837 |
prot |= PAGE_WRITE; |
| 838 |
} |
| 839 |
} |
| 840 |
do_mapping:
|
| 841 |
pte = pte & env->a20_mask; |
| 842 |
|
| 843 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
| 844 |
avoid filling it too fast */
|
| 845 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 846 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 847 |
vaddr = virt_addr + page_offset; |
| 848 |
|
| 849 |
tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size); |
| 850 |
return 0; |
| 851 |
do_fault_protect:
|
| 852 |
error_code = PG_ERROR_P_MASK; |
| 853 |
do_fault:
|
| 854 |
error_code |= (is_write << PG_ERROR_W_BIT); |
| 855 |
if (is_user)
|
| 856 |
error_code |= PG_ERROR_U_MASK; |
| 857 |
if (is_write1 == 2 && |
| 858 |
(env->efer & MSR_EFER_NXE) && |
| 859 |
(env->cr[4] & CR4_PAE_MASK))
|
| 860 |
error_code |= PG_ERROR_I_D_MASK; |
| 861 |
if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
| 862 |
/* cr2 is not modified in case of exceptions */
|
| 863 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
| 864 |
addr); |
| 865 |
} else {
|
| 866 |
env->cr[2] = addr;
|
| 867 |
} |
| 868 |
env->error_code = error_code; |
| 869 |
env->exception_index = EXCP0E_PAGE; |
| 870 |
return 1; |
| 871 |
} |
| 872 |
|
| 873 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 874 |
{
|
| 875 |
target_ulong pde_addr, pte_addr; |
| 876 |
uint64_t pte; |
| 877 |
target_phys_addr_t paddr; |
| 878 |
uint32_t page_offset; |
| 879 |
int page_size;
|
| 880 |
|
| 881 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 882 |
target_ulong pdpe_addr; |
| 883 |
uint64_t pde, pdpe; |
| 884 |
|
| 885 |
#ifdef TARGET_X86_64
|
| 886 |
if (env->hflags & HF_LMA_MASK) {
|
| 887 |
uint64_t pml4e_addr, pml4e; |
| 888 |
int32_t sext; |
| 889 |
|
| 890 |
/* test virtual address sign extension */
|
| 891 |
sext = (int64_t)addr >> 47;
|
| 892 |
if (sext != 0 && sext != -1) |
| 893 |
return -1; |
| 894 |
|
| 895 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 896 |
env->a20_mask; |
| 897 |
pml4e = ldq_phys(pml4e_addr); |
| 898 |
if (!(pml4e & PG_PRESENT_MASK))
|
| 899 |
return -1; |
| 900 |
|
| 901 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
| 902 |
env->a20_mask; |
| 903 |
pdpe = ldq_phys(pdpe_addr); |
| 904 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 905 |
return -1; |
| 906 |
} else
|
| 907 |
#endif
|
| 908 |
{
|
| 909 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 910 |
env->a20_mask; |
| 911 |
pdpe = ldq_phys(pdpe_addr); |
| 912 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 913 |
return -1; |
| 914 |
} |
| 915 |
|
| 916 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
| 917 |
env->a20_mask; |
| 918 |
pde = ldq_phys(pde_addr); |
| 919 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 920 |
return -1; |
| 921 |
} |
| 922 |
if (pde & PG_PSE_MASK) {
|
| 923 |
/* 2 MB page */
|
| 924 |
page_size = 2048 * 1024; |
| 925 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 926 |
} else {
|
| 927 |
/* 4 KB page */
|
| 928 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
| 929 |
env->a20_mask; |
| 930 |
page_size = 4096;
|
| 931 |
pte = ldq_phys(pte_addr); |
| 932 |
} |
| 933 |
if (!(pte & PG_PRESENT_MASK))
|
| 934 |
return -1; |
| 935 |
} else {
|
| 936 |
uint32_t pde; |
| 937 |
|
| 938 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 939 |
pte = addr; |
| 940 |
page_size = 4096;
|
| 941 |
} else {
|
| 942 |
/* page directory entry */
|
| 943 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
| 944 |
pde = ldl_phys(pde_addr); |
| 945 |
if (!(pde & PG_PRESENT_MASK))
|
| 946 |
return -1; |
| 947 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 948 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
| 949 |
page_size = 4096 * 1024; |
| 950 |
} else {
|
| 951 |
/* page directory entry */
|
| 952 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
| 953 |
pte = ldl_phys(pte_addr); |
| 954 |
if (!(pte & PG_PRESENT_MASK))
|
| 955 |
return -1; |
| 956 |
page_size = 4096;
|
| 957 |
} |
| 958 |
} |
| 959 |
pte = pte & env->a20_mask; |
| 960 |
} |
| 961 |
|
| 962 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 963 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 964 |
return paddr;
|
| 965 |
} |
| 966 |
|
| 967 |
void hw_breakpoint_insert(CPUState *env, int index) |
| 968 |
{
|
| 969 |
int type, err = 0; |
| 970 |
|
| 971 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 972 |
case 0: |
| 973 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
| 974 |
err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU, |
| 975 |
&env->cpu_breakpoint[index]); |
| 976 |
break;
|
| 977 |
case 1: |
| 978 |
type = BP_CPU | BP_MEM_WRITE; |
| 979 |
goto insert_wp;
|
| 980 |
case 2: |
| 981 |
/* No support for I/O watchpoints yet */
|
| 982 |
break;
|
| 983 |
case 3: |
| 984 |
type = BP_CPU | BP_MEM_ACCESS; |
| 985 |
insert_wp:
|
| 986 |
err = cpu_watchpoint_insert(env, env->dr[index], |
| 987 |
hw_breakpoint_len(env->dr[7], index),
|
| 988 |
type, &env->cpu_watchpoint[index]); |
| 989 |
break;
|
| 990 |
} |
| 991 |
if (err)
|
| 992 |
env->cpu_breakpoint[index] = NULL;
|
| 993 |
} |
| 994 |
|
| 995 |
void hw_breakpoint_remove(CPUState *env, int index) |
| 996 |
{
|
| 997 |
if (!env->cpu_breakpoint[index])
|
| 998 |
return;
|
| 999 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 1000 |
case 0: |
| 1001 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
| 1002 |
cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]); |
| 1003 |
break;
|
| 1004 |
case 1: |
| 1005 |
case 3: |
| 1006 |
cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]); |
| 1007 |
break;
|
| 1008 |
case 2: |
| 1009 |
/* No support for I/O watchpoints yet */
|
| 1010 |
break;
|
| 1011 |
} |
| 1012 |
} |
| 1013 |
|
| 1014 |
int check_hw_breakpoints(CPUState *env, int force_dr6_update) |
| 1015 |
{
|
| 1016 |
target_ulong dr6; |
| 1017 |
int reg, type;
|
| 1018 |
int hit_enabled = 0; |
| 1019 |
|
| 1020 |
dr6 = env->dr[6] & ~0xf; |
| 1021 |
for (reg = 0; reg < 4; reg++) { |
| 1022 |
type = hw_breakpoint_type(env->dr[7], reg);
|
| 1023 |
if ((type == 0 && env->dr[reg] == env->eip) || |
| 1024 |
((type & 1) && env->cpu_watchpoint[reg] &&
|
| 1025 |
(env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
|
| 1026 |
dr6 |= 1 << reg;
|
| 1027 |
if (hw_breakpoint_enabled(env->dr[7], reg)) |
| 1028 |
hit_enabled = 1;
|
| 1029 |
} |
| 1030 |
} |
| 1031 |
if (hit_enabled || force_dr6_update)
|
| 1032 |
env->dr[6] = dr6;
|
| 1033 |
return hit_enabled;
|
| 1034 |
} |
| 1035 |
|
| 1036 |
static CPUDebugExcpHandler *prev_debug_excp_handler;
|
| 1037 |
|
| 1038 |
void raise_exception_env(int exception_index, CPUState *env); |
| 1039 |
|
| 1040 |
static void breakpoint_handler(CPUState *env) |
| 1041 |
{
|
| 1042 |
CPUBreakpoint *bp; |
| 1043 |
|
| 1044 |
if (env->watchpoint_hit) {
|
| 1045 |
if (env->watchpoint_hit->flags & BP_CPU) {
|
| 1046 |
env->watchpoint_hit = NULL;
|
| 1047 |
if (check_hw_breakpoints(env, 0)) |
| 1048 |
raise_exception_env(EXCP01_DB, env); |
| 1049 |
else
|
| 1050 |
cpu_resume_from_signal(env, NULL);
|
| 1051 |
} |
| 1052 |
} else {
|
| 1053 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) |
| 1054 |
if (bp->pc == env->eip) {
|
| 1055 |
if (bp->flags & BP_CPU) {
|
| 1056 |
check_hw_breakpoints(env, 1);
|
| 1057 |
raise_exception_env(EXCP01_DB, env); |
| 1058 |
} |
| 1059 |
break;
|
| 1060 |
} |
| 1061 |
} |
| 1062 |
if (prev_debug_excp_handler)
|
| 1063 |
prev_debug_excp_handler(env); |
| 1064 |
} |
| 1065 |
|
| 1066 |
/* This should come from sysemu.h - if we could include it here... */
|
| 1067 |
void qemu_system_reset_request(void); |
| 1068 |
|
| 1069 |
static void qemu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, |
| 1070 |
uint64_t mcg_status, uint64_t addr, uint64_t misc) |
| 1071 |
{
|
| 1072 |
uint64_t mcg_cap = cenv->mcg_cap; |
| 1073 |
uint64_t *banks = cenv->mce_banks; |
| 1074 |
|
| 1075 |
/*
|
| 1076 |
* if MSR_MCG_CTL is not all 1s, the uncorrected error
|
| 1077 |
* reporting is disabled
|
| 1078 |
*/
|
| 1079 |
if ((status & MCI_STATUS_UC) && (mcg_cap & MCG_CTL_P) &&
|
| 1080 |
cenv->mcg_ctl != ~(uint64_t)0)
|
| 1081 |
return;
|
| 1082 |
banks += 4 * bank;
|
| 1083 |
/*
|
| 1084 |
* if MSR_MCi_CTL is not all 1s, the uncorrected error
|
| 1085 |
* reporting is disabled for the bank
|
| 1086 |
*/
|
| 1087 |
if ((status & MCI_STATUS_UC) && banks[0] != ~(uint64_t)0) |
| 1088 |
return;
|
| 1089 |
if (status & MCI_STATUS_UC) {
|
| 1090 |
if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
|
| 1091 |
!(cenv->cr[4] & CR4_MCE_MASK)) {
|
| 1092 |
fprintf(stderr, "injects mce exception while previous "
|
| 1093 |
"one is in progress!\n");
|
| 1094 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
| 1095 |
qemu_system_reset_request(); |
| 1096 |
return;
|
| 1097 |
} |
| 1098 |
if (banks[1] & MCI_STATUS_VAL) |
| 1099 |
status |= MCI_STATUS_OVER; |
| 1100 |
banks[2] = addr;
|
| 1101 |
banks[3] = misc;
|
| 1102 |
cenv->mcg_status = mcg_status; |
| 1103 |
banks[1] = status;
|
| 1104 |
cpu_interrupt(cenv, CPU_INTERRUPT_MCE); |
| 1105 |
} else if (!(banks[1] & MCI_STATUS_VAL) |
| 1106 |
|| !(banks[1] & MCI_STATUS_UC)) {
|
| 1107 |
if (banks[1] & MCI_STATUS_VAL) |
| 1108 |
status |= MCI_STATUS_OVER; |
| 1109 |
banks[2] = addr;
|
| 1110 |
banks[3] = misc;
|
| 1111 |
banks[1] = status;
|
| 1112 |
} else
|
| 1113 |
banks[1] |= MCI_STATUS_OVER;
|
| 1114 |
} |
| 1115 |
|
| 1116 |
void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status, |
| 1117 |
uint64_t mcg_status, uint64_t addr, uint64_t misc, |
| 1118 |
int broadcast)
|
| 1119 |
{
|
| 1120 |
unsigned bank_num = cenv->mcg_cap & 0xff; |
| 1121 |
CPUState *env; |
| 1122 |
int flag = 0; |
| 1123 |
|
| 1124 |
if (bank >= bank_num || !(status & MCI_STATUS_VAL)) {
|
| 1125 |
return;
|
| 1126 |
} |
| 1127 |
|
| 1128 |
if (broadcast) {
|
| 1129 |
if (!cpu_x86_support_mca_broadcast(cenv)) {
|
| 1130 |
fprintf(stderr, "Current CPU does not support broadcast\n");
|
| 1131 |
return;
|
| 1132 |
} |
| 1133 |
} |
| 1134 |
|
| 1135 |
if (kvm_enabled()) {
|
| 1136 |
if (broadcast) {
|
| 1137 |
flag |= MCE_BROADCAST; |
| 1138 |
} |
| 1139 |
|
| 1140 |
kvm_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc, flag); |
| 1141 |
} else {
|
| 1142 |
qemu_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc); |
| 1143 |
if (broadcast) {
|
| 1144 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 1145 |
if (cenv == env) {
|
| 1146 |
continue;
|
| 1147 |
} |
| 1148 |
qemu_inject_x86_mce(env, 1, MCI_STATUS_VAL | MCI_STATUS_UC,
|
| 1149 |
MCG_STATUS_MCIP | MCG_STATUS_RIPV, 0, 0); |
| 1150 |
} |
| 1151 |
} |
| 1152 |
} |
| 1153 |
} |
| 1154 |
#endif /* !CONFIG_USER_ONLY */ |
| 1155 |
|
| 1156 |
static void mce_init(CPUX86State *cenv) |
| 1157 |
{
|
| 1158 |
unsigned int bank, bank_num; |
| 1159 |
|
| 1160 |
if (((cenv->cpuid_version >> 8)&0xf) >= 6 |
| 1161 |
&& (cenv->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA)) {
|
| 1162 |
cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF; |
| 1163 |
cenv->mcg_ctl = ~(uint64_t)0;
|
| 1164 |
bank_num = MCE_BANKS_DEF; |
| 1165 |
for (bank = 0; bank < bank_num; bank++) |
| 1166 |
cenv->mce_banks[bank*4] = ~(uint64_t)0; |
| 1167 |
} |
| 1168 |
} |
| 1169 |
|
| 1170 |
int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector, |
| 1171 |
target_ulong *base, unsigned int *limit, |
| 1172 |
unsigned int *flags) |
| 1173 |
{
|
| 1174 |
SegmentCache *dt; |
| 1175 |
target_ulong ptr; |
| 1176 |
uint32_t e1, e2; |
| 1177 |
int index;
|
| 1178 |
|
| 1179 |
if (selector & 0x4) |
| 1180 |
dt = &env->ldt; |
| 1181 |
else
|
| 1182 |
dt = &env->gdt; |
| 1183 |
index = selector & ~7;
|
| 1184 |
ptr = dt->base + index; |
| 1185 |
if ((index + 7) > dt->limit |
| 1186 |
|| cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0 |
| 1187 |
|| cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0) |
| 1188 |
return 0; |
| 1189 |
|
| 1190 |
*base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
| 1191 |
*limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
| 1192 |
if (e2 & DESC_G_MASK)
|
| 1193 |
*limit = (*limit << 12) | 0xfff; |
| 1194 |
*flags = e2; |
| 1195 |
|
| 1196 |
return 1; |
| 1197 |
} |
| 1198 |
|
| 1199 |
CPUX86State *cpu_x86_init(const char *cpu_model) |
| 1200 |
{
|
| 1201 |
CPUX86State *env; |
| 1202 |
static int inited; |
| 1203 |
|
| 1204 |
env = qemu_mallocz(sizeof(CPUX86State));
|
| 1205 |
cpu_exec_init(env); |
| 1206 |
env->cpu_model_str = cpu_model; |
| 1207 |
|
| 1208 |
/* init various static tables */
|
| 1209 |
if (!inited) {
|
| 1210 |
inited = 1;
|
| 1211 |
optimize_flags_init(); |
| 1212 |
#ifndef CONFIG_USER_ONLY
|
| 1213 |
prev_debug_excp_handler = |
| 1214 |
cpu_set_debug_excp_handler(breakpoint_handler); |
| 1215 |
#endif
|
| 1216 |
} |
| 1217 |
if (cpu_x86_register(env, cpu_model) < 0) { |
| 1218 |
cpu_x86_close(env); |
| 1219 |
return NULL; |
| 1220 |
} |
| 1221 |
mce_init(env); |
| 1222 |
|
| 1223 |
qemu_init_vcpu(env); |
| 1224 |
|
| 1225 |
return env;
|
| 1226 |
} |
| 1227 |
|
| 1228 |
#if !defined(CONFIG_USER_ONLY)
|
| 1229 |
void do_cpu_init(CPUState *env)
|
| 1230 |
{
|
| 1231 |
int sipi = env->interrupt_request & CPU_INTERRUPT_SIPI;
|
| 1232 |
cpu_reset(env); |
| 1233 |
env->interrupt_request = sipi; |
| 1234 |
apic_init_reset(env->apic_state); |
| 1235 |
env->halted = !cpu_is_bsp(env); |
| 1236 |
} |
| 1237 |
|
| 1238 |
void do_cpu_sipi(CPUState *env)
|
| 1239 |
{
|
| 1240 |
apic_sipi(env->apic_state); |
| 1241 |
} |
| 1242 |
#else
|
| 1243 |
void do_cpu_init(CPUState *env)
|
| 1244 |
{
|
| 1245 |
} |
| 1246 |
void do_cpu_sipi(CPUState *env)
|
| 1247 |
{
|
| 1248 |
} |
| 1249 |
#endif
|