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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 "cpu.h" |
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#include "sysemu/kvm.h" |
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#ifndef CONFIG_USER_ONLY
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#include "sysemu/sysemu.h" |
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#include "monitor/monitor.h" |
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#endif
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|
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//#define DEBUG_MMU
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|
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static void cpu_x86_version(CPUX86State *env, int *family, int *model) |
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{
|
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int cpuver = env->cpuid_version;
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|
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if (family == NULL || model == NULL) { |
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return;
|
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} |
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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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|
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/* Broadcast MCA signal for processor version 06H_EH and above */
|
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int cpu_x86_support_mca_broadcast(CPUX86State *env)
|
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{
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int family = 0; |
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int model = 0; |
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|
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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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|
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return 0; |
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} |
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|
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/***********************************************************/
|
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/* x86 debug */
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|
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static const char *cc_op_str[CC_OP_NB] = { |
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"DYNAMIC",
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"EFLAGS",
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|
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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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|
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"SBBB",
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"SBBW",
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"SBBL",
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"SBBQ",
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|
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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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"BMILGB",
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"BMILGW",
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"BMILGL",
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"BMILGQ",
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"ADCX",
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"ADOX",
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"ADCOX",
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"CLR",
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}; |
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static void |
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cpu_x86_dump_seg_cache(CPUX86State *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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|
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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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|
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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 x86_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf,
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int flags)
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{
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X86CPU *cpu = X86_CPU(cs); |
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CPUX86State *env = &cpu->env; |
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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(cs); |
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|
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eflags = cpu_compute_eflags(env); |
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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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cs->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], |
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(uint32_t)env->regs[R_EBX], |
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(uint32_t)env->regs[R_ECX], |
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(uint32_t)env->regs[R_EDX], |
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(uint32_t)env->regs[R_ESI], |
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(uint32_t)env->regs[R_EDI], |
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(uint32_t)env->regs[R_EBP], |
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(uint32_t)env->regs[R_ESP], |
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(uint32_t)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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cs->halted); |
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} |
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|
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for(i = 0; i < 6; i++) { |
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cpu_x86_dump_seg_cache(env, f, cpu_fprintf, seg_name[i], |
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&env->segs[i]); |
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} |
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cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "LDT", &env->ldt);
|
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cpu_x86_dump_seg_cache(env, f, cpu_fprintf, "TR", &env->tr);
|
| 266 |
|
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#ifdef TARGET_X86_64
|
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if (env->hflags & HF_LMA_MASK) {
|
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cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
| 270 |
env->gdt.base, env->gdt.limit); |
| 271 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
| 272 |
env->idt.base, env->idt.limit); |
| 273 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
| 274 |
(uint32_t)env->cr[0],
|
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env->cr[2],
|
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env->cr[3],
|
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(uint32_t)env->cr[4]);
|
| 278 |
for(i = 0; i < 4; i++) |
| 279 |
cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
| 280 |
cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
| 281 |
env->dr[6], env->dr[7]); |
| 282 |
} else
|
| 283 |
#endif
|
| 284 |
{
|
| 285 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
| 286 |
(uint32_t)env->gdt.base, env->gdt.limit); |
| 287 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
| 288 |
(uint32_t)env->idt.base, env->idt.limit); |
| 289 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
| 290 |
(uint32_t)env->cr[0],
|
| 291 |
(uint32_t)env->cr[2],
|
| 292 |
(uint32_t)env->cr[3],
|
| 293 |
(uint32_t)env->cr[4]);
|
| 294 |
for(i = 0; i < 4; i++) { |
| 295 |
cpu_fprintf(f, "DR%d=" TARGET_FMT_lx " ", i, env->dr[i]); |
| 296 |
} |
| 297 |
cpu_fprintf(f, "\nDR6=" TARGET_FMT_lx " DR7=" TARGET_FMT_lx "\n", |
| 298 |
env->dr[6], env->dr[7]); |
| 299 |
} |
| 300 |
if (flags & CPU_DUMP_CCOP) {
|
| 301 |
if ((unsigned)env->cc_op < CC_OP_NB) |
| 302 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
| 303 |
else
|
| 304 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
| 305 |
#ifdef TARGET_X86_64
|
| 306 |
if (env->hflags & HF_CS64_MASK) {
|
| 307 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
| 308 |
env->cc_src, env->cc_dst, |
| 309 |
cc_op_name); |
| 310 |
} else
|
| 311 |
#endif
|
| 312 |
{
|
| 313 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
| 314 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
| 315 |
cc_op_name); |
| 316 |
} |
| 317 |
} |
| 318 |
cpu_fprintf(f, "EFER=%016" PRIx64 "\n", env->efer); |
| 319 |
if (flags & CPU_DUMP_FPU) {
|
| 320 |
int fptag;
|
| 321 |
fptag = 0;
|
| 322 |
for(i = 0; i < 8; i++) { |
| 323 |
fptag |= ((!env->fptags[i]) << i); |
| 324 |
} |
| 325 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
| 326 |
env->fpuc, |
| 327 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
| 328 |
env->fpstt, |
| 329 |
fptag, |
| 330 |
env->mxcsr); |
| 331 |
for(i=0;i<8;i++) { |
| 332 |
CPU_LDoubleU u; |
| 333 |
u.d = env->fpregs[i].d; |
| 334 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
| 335 |
i, u.l.lower, u.l.upper); |
| 336 |
if ((i & 1) == 1) |
| 337 |
cpu_fprintf(f, "\n");
|
| 338 |
else
|
| 339 |
cpu_fprintf(f, " ");
|
| 340 |
} |
| 341 |
if (env->hflags & HF_CS64_MASK)
|
| 342 |
nb = 16;
|
| 343 |
else
|
| 344 |
nb = 8;
|
| 345 |
for(i=0;i<nb;i++) { |
| 346 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
| 347 |
i, |
| 348 |
env->xmm_regs[i].XMM_L(3),
|
| 349 |
env->xmm_regs[i].XMM_L(2),
|
| 350 |
env->xmm_regs[i].XMM_L(1),
|
| 351 |
env->xmm_regs[i].XMM_L(0));
|
| 352 |
if ((i & 1) == 1) |
| 353 |
cpu_fprintf(f, "\n");
|
| 354 |
else
|
| 355 |
cpu_fprintf(f, " ");
|
| 356 |
} |
| 357 |
} |
| 358 |
if (flags & CPU_DUMP_CODE) {
|
| 359 |
target_ulong base = env->segs[R_CS].base + env->eip; |
| 360 |
target_ulong offs = MIN(env->eip, DUMP_CODE_BYTES_BACKWARD); |
| 361 |
uint8_t code; |
| 362 |
char codestr[3]; |
| 363 |
|
| 364 |
cpu_fprintf(f, "Code=");
|
| 365 |
for (i = 0; i < DUMP_CODE_BYTES_TOTAL; i++) { |
| 366 |
if (cpu_memory_rw_debug(env, base - offs + i, &code, 1, 0) == 0) { |
| 367 |
snprintf(codestr, sizeof(codestr), "%02x", code); |
| 368 |
} else {
|
| 369 |
snprintf(codestr, sizeof(codestr), "??"); |
| 370 |
} |
| 371 |
cpu_fprintf(f, "%s%s%s%s", i > 0 ? " " : "", |
| 372 |
i == offs ? "<" : "", codestr, i == offs ? ">" : ""); |
| 373 |
} |
| 374 |
cpu_fprintf(f, "\n");
|
| 375 |
} |
| 376 |
} |
| 377 |
|
| 378 |
/***********************************************************/
|
| 379 |
/* x86 mmu */
|
| 380 |
/* XXX: add PGE support */
|
| 381 |
|
| 382 |
void x86_cpu_set_a20(X86CPU *cpu, int a20_state) |
| 383 |
{
|
| 384 |
CPUX86State *env = &cpu->env; |
| 385 |
|
| 386 |
a20_state = (a20_state != 0);
|
| 387 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
| 388 |
#if defined(DEBUG_MMU)
|
| 389 |
printf("A20 update: a20=%d\n", a20_state);
|
| 390 |
#endif
|
| 391 |
/* if the cpu is currently executing code, we must unlink it and
|
| 392 |
all the potentially executing TB */
|
| 393 |
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_EXITTB); |
| 394 |
|
| 395 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
| 396 |
we must flush everything */
|
| 397 |
tlb_flush(env, 1);
|
| 398 |
env->a20_mask = ~(1 << 20) | (a20_state << 20); |
| 399 |
} |
| 400 |
} |
| 401 |
|
| 402 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
| 403 |
{
|
| 404 |
int pe_state;
|
| 405 |
|
| 406 |
#if defined(DEBUG_MMU)
|
| 407 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
| 408 |
#endif
|
| 409 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
| 410 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
| 411 |
tlb_flush(env, 1);
|
| 412 |
} |
| 413 |
|
| 414 |
#ifdef TARGET_X86_64
|
| 415 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
| 416 |
(env->efer & MSR_EFER_LME)) {
|
| 417 |
/* enter in long mode */
|
| 418 |
/* XXX: generate an exception */
|
| 419 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
| 420 |
return;
|
| 421 |
env->efer |= MSR_EFER_LMA; |
| 422 |
env->hflags |= HF_LMA_MASK; |
| 423 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
| 424 |
(env->efer & MSR_EFER_LMA)) {
|
| 425 |
/* exit long mode */
|
| 426 |
env->efer &= ~MSR_EFER_LMA; |
| 427 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
| 428 |
env->eip &= 0xffffffff;
|
| 429 |
} |
| 430 |
#endif
|
| 431 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
| 432 |
|
| 433 |
/* update PE flag in hidden flags */
|
| 434 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
| 435 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
| 436 |
/* ensure that ADDSEG is always set in real mode */
|
| 437 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
| 438 |
/* update FPU flags */
|
| 439 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
| 440 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
| 441 |
} |
| 442 |
|
| 443 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
| 444 |
the PDPT */
|
| 445 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
| 446 |
{
|
| 447 |
env->cr[3] = new_cr3;
|
| 448 |
if (env->cr[0] & CR0_PG_MASK) { |
| 449 |
#if defined(DEBUG_MMU)
|
| 450 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
| 451 |
#endif
|
| 452 |
tlb_flush(env, 0);
|
| 453 |
} |
| 454 |
} |
| 455 |
|
| 456 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
| 457 |
{
|
| 458 |
#if defined(DEBUG_MMU)
|
| 459 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
| 460 |
#endif
|
| 461 |
if ((new_cr4 ^ env->cr[4]) & |
| 462 |
(CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK | |
| 463 |
CR4_SMEP_MASK | CR4_SMAP_MASK)) {
|
| 464 |
tlb_flush(env, 1);
|
| 465 |
} |
| 466 |
/* SSE handling */
|
| 467 |
if (!(env->features[FEAT_1_EDX] & CPUID_SSE)) {
|
| 468 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
| 469 |
} |
| 470 |
env->hflags &= ~HF_OSFXSR_MASK; |
| 471 |
if (new_cr4 & CR4_OSFXSR_MASK) {
|
| 472 |
env->hflags |= HF_OSFXSR_MASK; |
| 473 |
} |
| 474 |
|
| 475 |
if (!(env->features[FEAT_7_0_EBX] & CPUID_7_0_EBX_SMAP)) {
|
| 476 |
new_cr4 &= ~CR4_SMAP_MASK; |
| 477 |
} |
| 478 |
env->hflags &= ~HF_SMAP_MASK; |
| 479 |
if (new_cr4 & CR4_SMAP_MASK) {
|
| 480 |
env->hflags |= HF_SMAP_MASK; |
| 481 |
} |
| 482 |
|
| 483 |
env->cr[4] = new_cr4;
|
| 484 |
} |
| 485 |
|
| 486 |
#if defined(CONFIG_USER_ONLY)
|
| 487 |
|
| 488 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 489 |
int is_write, int mmu_idx) |
| 490 |
{
|
| 491 |
/* user mode only emulation */
|
| 492 |
is_write &= 1;
|
| 493 |
env->cr[2] = addr;
|
| 494 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
| 495 |
env->error_code |= PG_ERROR_U_MASK; |
| 496 |
env->exception_index = EXCP0E_PAGE; |
| 497 |
return 1; |
| 498 |
} |
| 499 |
|
| 500 |
#else
|
| 501 |
|
| 502 |
/* XXX: This value should match the one returned by CPUID
|
| 503 |
* and in exec.c */
|
| 504 |
# if defined(TARGET_X86_64)
|
| 505 |
# define PHYS_ADDR_MASK 0xfffffff000LL |
| 506 |
# else
|
| 507 |
# define PHYS_ADDR_MASK 0xffffff000LL |
| 508 |
# endif
|
| 509 |
|
| 510 |
/* return value:
|
| 511 |
-1 = cannot handle fault
|
| 512 |
0 = nothing more to do
|
| 513 |
1 = generate PF fault
|
| 514 |
*/
|
| 515 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 516 |
int is_write1, int mmu_idx) |
| 517 |
{
|
| 518 |
uint64_t ptep, pte; |
| 519 |
target_ulong pde_addr, pte_addr; |
| 520 |
int error_code, is_dirty, prot, page_size, is_write, is_user;
|
| 521 |
hwaddr paddr; |
| 522 |
uint32_t page_offset; |
| 523 |
target_ulong vaddr, virt_addr; |
| 524 |
|
| 525 |
is_user = mmu_idx == MMU_USER_IDX; |
| 526 |
#if defined(DEBUG_MMU)
|
| 527 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
| 528 |
addr, is_write1, is_user, env->eip); |
| 529 |
#endif
|
| 530 |
is_write = is_write1 & 1;
|
| 531 |
|
| 532 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 533 |
pte = addr; |
| 534 |
virt_addr = addr & TARGET_PAGE_MASK; |
| 535 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 536 |
page_size = 4096;
|
| 537 |
goto do_mapping;
|
| 538 |
} |
| 539 |
|
| 540 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 541 |
uint64_t pde, pdpe; |
| 542 |
target_ulong pdpe_addr; |
| 543 |
|
| 544 |
#ifdef TARGET_X86_64
|
| 545 |
if (env->hflags & HF_LMA_MASK) {
|
| 546 |
uint64_t pml4e_addr, pml4e; |
| 547 |
int32_t sext; |
| 548 |
|
| 549 |
/* test virtual address sign extension */
|
| 550 |
sext = (int64_t)addr >> 47;
|
| 551 |
if (sext != 0 && sext != -1) { |
| 552 |
env->error_code = 0;
|
| 553 |
env->exception_index = EXCP0D_GPF; |
| 554 |
return 1; |
| 555 |
} |
| 556 |
|
| 557 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 558 |
env->a20_mask; |
| 559 |
pml4e = ldq_phys(pml4e_addr); |
| 560 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
| 561 |
error_code = 0;
|
| 562 |
goto do_fault;
|
| 563 |
} |
| 564 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
| 565 |
error_code = PG_ERROR_RSVD_MASK; |
| 566 |
goto do_fault;
|
| 567 |
} |
| 568 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
| 569 |
pml4e |= PG_ACCESSED_MASK; |
| 570 |
stl_phys_notdirty(pml4e_addr, pml4e); |
| 571 |
} |
| 572 |
ptep = pml4e ^ PG_NX_MASK; |
| 573 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
| 574 |
env->a20_mask; |
| 575 |
pdpe = ldq_phys(pdpe_addr); |
| 576 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 577 |
error_code = 0;
|
| 578 |
goto do_fault;
|
| 579 |
} |
| 580 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
| 581 |
error_code = PG_ERROR_RSVD_MASK; |
| 582 |
goto do_fault;
|
| 583 |
} |
| 584 |
ptep &= pdpe ^ PG_NX_MASK; |
| 585 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
| 586 |
pdpe |= PG_ACCESSED_MASK; |
| 587 |
stl_phys_notdirty(pdpe_addr, pdpe); |
| 588 |
} |
| 589 |
} else
|
| 590 |
#endif
|
| 591 |
{
|
| 592 |
/* XXX: load them when cr3 is loaded ? */
|
| 593 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 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 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| 601 |
} |
| 602 |
|
| 603 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
| 604 |
env->a20_mask; |
| 605 |
pde = ldq_phys(pde_addr); |
| 606 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 607 |
error_code = 0;
|
| 608 |
goto do_fault;
|
| 609 |
} |
| 610 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
| 611 |
error_code = PG_ERROR_RSVD_MASK; |
| 612 |
goto do_fault;
|
| 613 |
} |
| 614 |
ptep &= pde ^ PG_NX_MASK; |
| 615 |
if (pde & PG_PSE_MASK) {
|
| 616 |
/* 2 MB page */
|
| 617 |
page_size = 2048 * 1024; |
| 618 |
ptep ^= PG_NX_MASK; |
| 619 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) { |
| 620 |
goto do_fault_protect;
|
| 621 |
} |
| 622 |
switch (mmu_idx) {
|
| 623 |
case MMU_USER_IDX:
|
| 624 |
if (!(ptep & PG_USER_MASK)) {
|
| 625 |
goto do_fault_protect;
|
| 626 |
} |
| 627 |
if (is_write && !(ptep & PG_RW_MASK)) {
|
| 628 |
goto do_fault_protect;
|
| 629 |
} |
| 630 |
break;
|
| 631 |
|
| 632 |
case MMU_KERNEL_IDX:
|
| 633 |
if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) && |
| 634 |
(ptep & PG_USER_MASK)) {
|
| 635 |
goto do_fault_protect;
|
| 636 |
} |
| 637 |
/* fall through */
|
| 638 |
case MMU_KSMAP_IDX:
|
| 639 |
if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) && |
| 640 |
(ptep & PG_USER_MASK)) {
|
| 641 |
goto do_fault_protect;
|
| 642 |
} |
| 643 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 644 |
is_write && !(ptep & PG_RW_MASK)) {
|
| 645 |
goto do_fault_protect;
|
| 646 |
} |
| 647 |
break;
|
| 648 |
|
| 649 |
default: /* cannot happen */ |
| 650 |
break;
|
| 651 |
} |
| 652 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 653 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 654 |
pde |= PG_ACCESSED_MASK; |
| 655 |
if (is_dirty)
|
| 656 |
pde |= PG_DIRTY_MASK; |
| 657 |
stl_phys_notdirty(pde_addr, pde); |
| 658 |
} |
| 659 |
/* align to page_size */
|
| 660 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
| 661 |
virt_addr = addr & ~(page_size - 1);
|
| 662 |
} else {
|
| 663 |
/* 4 KB page */
|
| 664 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 665 |
pde |= PG_ACCESSED_MASK; |
| 666 |
stl_phys_notdirty(pde_addr, pde); |
| 667 |
} |
| 668 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
| 669 |
env->a20_mask; |
| 670 |
pte = ldq_phys(pte_addr); |
| 671 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 672 |
error_code = 0;
|
| 673 |
goto do_fault;
|
| 674 |
} |
| 675 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
| 676 |
error_code = PG_ERROR_RSVD_MASK; |
| 677 |
goto do_fault;
|
| 678 |
} |
| 679 |
/* combine pde and pte nx, user and rw protections */
|
| 680 |
ptep &= pte ^ PG_NX_MASK; |
| 681 |
ptep ^= PG_NX_MASK; |
| 682 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 683 |
goto do_fault_protect;
|
| 684 |
switch (mmu_idx) {
|
| 685 |
case MMU_USER_IDX:
|
| 686 |
if (!(ptep & PG_USER_MASK)) {
|
| 687 |
goto do_fault_protect;
|
| 688 |
} |
| 689 |
if (is_write && !(ptep & PG_RW_MASK)) {
|
| 690 |
goto do_fault_protect;
|
| 691 |
} |
| 692 |
break;
|
| 693 |
|
| 694 |
case MMU_KERNEL_IDX:
|
| 695 |
if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) && |
| 696 |
(ptep & PG_USER_MASK)) {
|
| 697 |
goto do_fault_protect;
|
| 698 |
} |
| 699 |
/* fall through */
|
| 700 |
case MMU_KSMAP_IDX:
|
| 701 |
if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) && |
| 702 |
(ptep & PG_USER_MASK)) {
|
| 703 |
goto do_fault_protect;
|
| 704 |
} |
| 705 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 706 |
is_write && !(ptep & PG_RW_MASK)) {
|
| 707 |
goto do_fault_protect;
|
| 708 |
} |
| 709 |
break;
|
| 710 |
|
| 711 |
default: /* cannot happen */ |
| 712 |
break;
|
| 713 |
} |
| 714 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 715 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 716 |
pte |= PG_ACCESSED_MASK; |
| 717 |
if (is_dirty)
|
| 718 |
pte |= PG_DIRTY_MASK; |
| 719 |
stl_phys_notdirty(pte_addr, pte); |
| 720 |
} |
| 721 |
page_size = 4096;
|
| 722 |
virt_addr = addr & ~0xfff;
|
| 723 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
| 724 |
} |
| 725 |
} else {
|
| 726 |
uint32_t pde; |
| 727 |
|
| 728 |
/* page directory entry */
|
| 729 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
| 730 |
env->a20_mask; |
| 731 |
pde = ldl_phys(pde_addr); |
| 732 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 733 |
error_code = 0;
|
| 734 |
goto do_fault;
|
| 735 |
} |
| 736 |
/* if PSE bit is set, then we use a 4MB page */
|
| 737 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 738 |
page_size = 4096 * 1024; |
| 739 |
switch (mmu_idx) {
|
| 740 |
case MMU_USER_IDX:
|
| 741 |
if (!(pde & PG_USER_MASK)) {
|
| 742 |
goto do_fault_protect;
|
| 743 |
} |
| 744 |
if (is_write && !(pde & PG_RW_MASK)) {
|
| 745 |
goto do_fault_protect;
|
| 746 |
} |
| 747 |
break;
|
| 748 |
|
| 749 |
case MMU_KERNEL_IDX:
|
| 750 |
if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) && |
| 751 |
(pde & PG_USER_MASK)) {
|
| 752 |
goto do_fault_protect;
|
| 753 |
} |
| 754 |
/* fall through */
|
| 755 |
case MMU_KSMAP_IDX:
|
| 756 |
if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) && |
| 757 |
(pde & PG_USER_MASK)) {
|
| 758 |
goto do_fault_protect;
|
| 759 |
} |
| 760 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 761 |
is_write && !(pde & PG_RW_MASK)) {
|
| 762 |
goto do_fault_protect;
|
| 763 |
} |
| 764 |
break;
|
| 765 |
|
| 766 |
default: /* cannot happen */ |
| 767 |
break;
|
| 768 |
} |
| 769 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 770 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 771 |
pde |= PG_ACCESSED_MASK; |
| 772 |
if (is_dirty)
|
| 773 |
pde |= PG_DIRTY_MASK; |
| 774 |
stl_phys_notdirty(pde_addr, pde); |
| 775 |
} |
| 776 |
|
| 777 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 778 |
ptep = pte; |
| 779 |
virt_addr = addr & ~(page_size - 1);
|
| 780 |
} else {
|
| 781 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 782 |
pde |= PG_ACCESSED_MASK; |
| 783 |
stl_phys_notdirty(pde_addr, pde); |
| 784 |
} |
| 785 |
|
| 786 |
/* page directory entry */
|
| 787 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
| 788 |
env->a20_mask; |
| 789 |
pte = ldl_phys(pte_addr); |
| 790 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 791 |
error_code = 0;
|
| 792 |
goto do_fault;
|
| 793 |
} |
| 794 |
/* combine pde and pte user and rw protections */
|
| 795 |
ptep = pte & pde; |
| 796 |
switch (mmu_idx) {
|
| 797 |
case MMU_USER_IDX:
|
| 798 |
if (!(ptep & PG_USER_MASK)) {
|
| 799 |
goto do_fault_protect;
|
| 800 |
} |
| 801 |
if (is_write && !(ptep & PG_RW_MASK)) {
|
| 802 |
goto do_fault_protect;
|
| 803 |
} |
| 804 |
break;
|
| 805 |
|
| 806 |
case MMU_KERNEL_IDX:
|
| 807 |
if (is_write1 != 2 && (env->cr[4] & CR4_SMAP_MASK) && |
| 808 |
(ptep & PG_USER_MASK)) {
|
| 809 |
goto do_fault_protect;
|
| 810 |
} |
| 811 |
/* fall through */
|
| 812 |
case MMU_KSMAP_IDX:
|
| 813 |
if (is_write1 == 2 && (env->cr[4] & CR4_SMEP_MASK) && |
| 814 |
(ptep & PG_USER_MASK)) {
|
| 815 |
goto do_fault_protect;
|
| 816 |
} |
| 817 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 818 |
is_write && !(ptep & PG_RW_MASK)) {
|
| 819 |
goto do_fault_protect;
|
| 820 |
} |
| 821 |
break;
|
| 822 |
|
| 823 |
default: /* cannot happen */ |
| 824 |
break;
|
| 825 |
} |
| 826 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 827 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 828 |
pte |= PG_ACCESSED_MASK; |
| 829 |
if (is_dirty)
|
| 830 |
pte |= PG_DIRTY_MASK; |
| 831 |
stl_phys_notdirty(pte_addr, pte); |
| 832 |
} |
| 833 |
page_size = 4096;
|
| 834 |
virt_addr = addr & ~0xfff;
|
| 835 |
} |
| 836 |
} |
| 837 |
/* the page can be put in the TLB */
|
| 838 |
prot = PAGE_READ; |
| 839 |
if (!(ptep & PG_NX_MASK))
|
| 840 |
prot |= PAGE_EXEC; |
| 841 |
if (pte & PG_DIRTY_MASK) {
|
| 842 |
/* only set write access if already dirty... otherwise wait
|
| 843 |
for dirty access */
|
| 844 |
if (is_user) {
|
| 845 |
if (ptep & PG_RW_MASK)
|
| 846 |
prot |= PAGE_WRITE; |
| 847 |
} else {
|
| 848 |
if (!(env->cr[0] & CR0_WP_MASK) || |
| 849 |
(ptep & PG_RW_MASK)) |
| 850 |
prot |= PAGE_WRITE; |
| 851 |
} |
| 852 |
} |
| 853 |
do_mapping:
|
| 854 |
pte = pte & env->a20_mask; |
| 855 |
|
| 856 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
| 857 |
avoid filling it too fast */
|
| 858 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 859 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 860 |
vaddr = virt_addr + page_offset; |
| 861 |
|
| 862 |
tlb_set_page(env, vaddr, paddr, prot, mmu_idx, page_size); |
| 863 |
return 0; |
| 864 |
do_fault_protect:
|
| 865 |
error_code = PG_ERROR_P_MASK; |
| 866 |
do_fault:
|
| 867 |
error_code |= (is_write << PG_ERROR_W_BIT); |
| 868 |
if (is_user)
|
| 869 |
error_code |= PG_ERROR_U_MASK; |
| 870 |
if (is_write1 == 2 && |
| 871 |
(((env->efer & MSR_EFER_NXE) && |
| 872 |
(env->cr[4] & CR4_PAE_MASK)) ||
|
| 873 |
(env->cr[4] & CR4_SMEP_MASK)))
|
| 874 |
error_code |= PG_ERROR_I_D_MASK; |
| 875 |
if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
| 876 |
/* cr2 is not modified in case of exceptions */
|
| 877 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
| 878 |
addr); |
| 879 |
} else {
|
| 880 |
env->cr[2] = addr;
|
| 881 |
} |
| 882 |
env->error_code = error_code; |
| 883 |
env->exception_index = EXCP0E_PAGE; |
| 884 |
return 1; |
| 885 |
} |
| 886 |
|
| 887 |
hwaddr cpu_get_phys_page_debug(CPUX86State *env, target_ulong addr) |
| 888 |
{
|
| 889 |
target_ulong pde_addr, pte_addr; |
| 890 |
uint64_t pte; |
| 891 |
hwaddr paddr; |
| 892 |
uint32_t page_offset; |
| 893 |
int page_size;
|
| 894 |
|
| 895 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 896 |
target_ulong pdpe_addr; |
| 897 |
uint64_t pde, pdpe; |
| 898 |
|
| 899 |
#ifdef TARGET_X86_64
|
| 900 |
if (env->hflags & HF_LMA_MASK) {
|
| 901 |
uint64_t pml4e_addr, pml4e; |
| 902 |
int32_t sext; |
| 903 |
|
| 904 |
/* test virtual address sign extension */
|
| 905 |
sext = (int64_t)addr >> 47;
|
| 906 |
if (sext != 0 && sext != -1) |
| 907 |
return -1; |
| 908 |
|
| 909 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 910 |
env->a20_mask; |
| 911 |
pml4e = ldq_phys(pml4e_addr); |
| 912 |
if (!(pml4e & PG_PRESENT_MASK))
|
| 913 |
return -1; |
| 914 |
|
| 915 |
pdpe_addr = ((pml4e & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
|
| 916 |
(((addr >> 30) & 0x1ff) << 3)) & env->a20_mask; |
| 917 |
pdpe = ldq_phys(pdpe_addr); |
| 918 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 919 |
return -1; |
| 920 |
} else
|
| 921 |
#endif
|
| 922 |
{
|
| 923 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 924 |
env->a20_mask; |
| 925 |
pdpe = ldq_phys(pdpe_addr); |
| 926 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 927 |
return -1; |
| 928 |
} |
| 929 |
|
| 930 |
pde_addr = ((pdpe & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
|
| 931 |
(((addr >> 21) & 0x1ff) << 3)) & env->a20_mask; |
| 932 |
pde = ldq_phys(pde_addr); |
| 933 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 934 |
return -1; |
| 935 |
} |
| 936 |
if (pde & PG_PSE_MASK) {
|
| 937 |
/* 2 MB page */
|
| 938 |
page_size = 2048 * 1024; |
| 939 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 940 |
} else {
|
| 941 |
/* 4 KB page */
|
| 942 |
pte_addr = ((pde & ~0xfff & ~(PG_NX_MASK | PG_HI_USER_MASK)) +
|
| 943 |
(((addr >> 12) & 0x1ff) << 3)) & env->a20_mask; |
| 944 |
page_size = 4096;
|
| 945 |
pte = ldq_phys(pte_addr); |
| 946 |
} |
| 947 |
pte &= ~(PG_NX_MASK | PG_HI_USER_MASK); |
| 948 |
if (!(pte & PG_PRESENT_MASK))
|
| 949 |
return -1; |
| 950 |
} else {
|
| 951 |
uint32_t pde; |
| 952 |
|
| 953 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 954 |
pte = addr; |
| 955 |
page_size = 4096;
|
| 956 |
} else {
|
| 957 |
/* page directory entry */
|
| 958 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
| 959 |
pde = ldl_phys(pde_addr); |
| 960 |
if (!(pde & PG_PRESENT_MASK))
|
| 961 |
return -1; |
| 962 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 963 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
| 964 |
page_size = 4096 * 1024; |
| 965 |
} else {
|
| 966 |
/* page directory entry */
|
| 967 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
| 968 |
pte = ldl_phys(pte_addr); |
| 969 |
if (!(pte & PG_PRESENT_MASK))
|
| 970 |
return -1; |
| 971 |
page_size = 4096;
|
| 972 |
} |
| 973 |
} |
| 974 |
pte = pte & env->a20_mask; |
| 975 |
} |
| 976 |
|
| 977 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 978 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 979 |
return paddr;
|
| 980 |
} |
| 981 |
|
| 982 |
void hw_breakpoint_insert(CPUX86State *env, int index) |
| 983 |
{
|
| 984 |
int type = 0, err = 0; |
| 985 |
|
| 986 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 987 |
case DR7_TYPE_BP_INST:
|
| 988 |
if (hw_breakpoint_enabled(env->dr[7], index)) { |
| 989 |
err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU, |
| 990 |
&env->cpu_breakpoint[index]); |
| 991 |
} |
| 992 |
break;
|
| 993 |
case DR7_TYPE_DATA_WR:
|
| 994 |
type = BP_CPU | BP_MEM_WRITE; |
| 995 |
break;
|
| 996 |
case DR7_TYPE_IO_RW:
|
| 997 |
/* No support for I/O watchpoints yet */
|
| 998 |
break;
|
| 999 |
case DR7_TYPE_DATA_RW:
|
| 1000 |
type = BP_CPU | BP_MEM_ACCESS; |
| 1001 |
break;
|
| 1002 |
} |
| 1003 |
|
| 1004 |
if (type != 0) { |
| 1005 |
err = cpu_watchpoint_insert(env, env->dr[index], |
| 1006 |
hw_breakpoint_len(env->dr[7], index),
|
| 1007 |
type, &env->cpu_watchpoint[index]); |
| 1008 |
} |
| 1009 |
|
| 1010 |
if (err) {
|
| 1011 |
env->cpu_breakpoint[index] = NULL;
|
| 1012 |
} |
| 1013 |
} |
| 1014 |
|
| 1015 |
void hw_breakpoint_remove(CPUX86State *env, int index) |
| 1016 |
{
|
| 1017 |
if (!env->cpu_breakpoint[index])
|
| 1018 |
return;
|
| 1019 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 1020 |
case DR7_TYPE_BP_INST:
|
| 1021 |
if (hw_breakpoint_enabled(env->dr[7], index)) { |
| 1022 |
cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]); |
| 1023 |
} |
| 1024 |
break;
|
| 1025 |
case DR7_TYPE_DATA_WR:
|
| 1026 |
case DR7_TYPE_DATA_RW:
|
| 1027 |
cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]); |
| 1028 |
break;
|
| 1029 |
case DR7_TYPE_IO_RW:
|
| 1030 |
/* No support for I/O watchpoints yet */
|
| 1031 |
break;
|
| 1032 |
} |
| 1033 |
} |
| 1034 |
|
| 1035 |
bool check_hw_breakpoints(CPUX86State *env, bool force_dr6_update) |
| 1036 |
{
|
| 1037 |
target_ulong dr6; |
| 1038 |
int reg;
|
| 1039 |
bool hit_enabled = false; |
| 1040 |
|
| 1041 |
dr6 = env->dr[6] & ~0xf; |
| 1042 |
for (reg = 0; reg < DR7_MAX_BP; reg++) { |
| 1043 |
bool bp_match = false; |
| 1044 |
bool wp_match = false; |
| 1045 |
|
| 1046 |
switch (hw_breakpoint_type(env->dr[7], reg)) { |
| 1047 |
case DR7_TYPE_BP_INST:
|
| 1048 |
if (env->dr[reg] == env->eip) {
|
| 1049 |
bp_match = true;
|
| 1050 |
} |
| 1051 |
break;
|
| 1052 |
case DR7_TYPE_DATA_WR:
|
| 1053 |
case DR7_TYPE_DATA_RW:
|
| 1054 |
if (env->cpu_watchpoint[reg] &&
|
| 1055 |
env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT) {
|
| 1056 |
wp_match = true;
|
| 1057 |
} |
| 1058 |
break;
|
| 1059 |
case DR7_TYPE_IO_RW:
|
| 1060 |
break;
|
| 1061 |
} |
| 1062 |
if (bp_match || wp_match) {
|
| 1063 |
dr6 |= 1 << reg;
|
| 1064 |
if (hw_breakpoint_enabled(env->dr[7], reg)) { |
| 1065 |
hit_enabled = true;
|
| 1066 |
} |
| 1067 |
} |
| 1068 |
} |
| 1069 |
|
| 1070 |
if (hit_enabled || force_dr6_update) {
|
| 1071 |
env->dr[6] = dr6;
|
| 1072 |
} |
| 1073 |
|
| 1074 |
return hit_enabled;
|
| 1075 |
} |
| 1076 |
|
| 1077 |
void breakpoint_handler(CPUX86State *env)
|
| 1078 |
{
|
| 1079 |
CPUBreakpoint *bp; |
| 1080 |
|
| 1081 |
if (env->watchpoint_hit) {
|
| 1082 |
if (env->watchpoint_hit->flags & BP_CPU) {
|
| 1083 |
env->watchpoint_hit = NULL;
|
| 1084 |
if (check_hw_breakpoints(env, false)) { |
| 1085 |
raise_exception(env, EXCP01_DB); |
| 1086 |
} else {
|
| 1087 |
cpu_resume_from_signal(env, NULL);
|
| 1088 |
} |
| 1089 |
} |
| 1090 |
} else {
|
| 1091 |
QTAILQ_FOREACH(bp, &env->breakpoints, entry) |
| 1092 |
if (bp->pc == env->eip) {
|
| 1093 |
if (bp->flags & BP_CPU) {
|
| 1094 |
check_hw_breakpoints(env, true);
|
| 1095 |
raise_exception(env, EXCP01_DB); |
| 1096 |
} |
| 1097 |
break;
|
| 1098 |
} |
| 1099 |
} |
| 1100 |
} |
| 1101 |
|
| 1102 |
typedef struct MCEInjectionParams { |
| 1103 |
Monitor *mon; |
| 1104 |
X86CPU *cpu; |
| 1105 |
int bank;
|
| 1106 |
uint64_t status; |
| 1107 |
uint64_t mcg_status; |
| 1108 |
uint64_t addr; |
| 1109 |
uint64_t misc; |
| 1110 |
int flags;
|
| 1111 |
} MCEInjectionParams; |
| 1112 |
|
| 1113 |
static void do_inject_x86_mce(void *data) |
| 1114 |
{
|
| 1115 |
MCEInjectionParams *params = data; |
| 1116 |
CPUX86State *cenv = ¶ms->cpu->env; |
| 1117 |
CPUState *cpu = CPU(params->cpu); |
| 1118 |
uint64_t *banks = cenv->mce_banks + 4 * params->bank;
|
| 1119 |
|
| 1120 |
cpu_synchronize_state(cpu); |
| 1121 |
|
| 1122 |
/*
|
| 1123 |
* If there is an MCE exception being processed, ignore this SRAO MCE
|
| 1124 |
* unless unconditional injection was requested.
|
| 1125 |
*/
|
| 1126 |
if (!(params->flags & MCE_INJECT_UNCOND_AO)
|
| 1127 |
&& !(params->status & MCI_STATUS_AR) |
| 1128 |
&& (cenv->mcg_status & MCG_STATUS_MCIP)) {
|
| 1129 |
return;
|
| 1130 |
} |
| 1131 |
|
| 1132 |
if (params->status & MCI_STATUS_UC) {
|
| 1133 |
/*
|
| 1134 |
* if MSR_MCG_CTL is not all 1s, the uncorrected error
|
| 1135 |
* reporting is disabled
|
| 1136 |
*/
|
| 1137 |
if ((cenv->mcg_cap & MCG_CTL_P) && cenv->mcg_ctl != ~(uint64_t)0) { |
| 1138 |
monitor_printf(params->mon, |
| 1139 |
"CPU %d: Uncorrected error reporting disabled\n",
|
| 1140 |
cpu->cpu_index); |
| 1141 |
return;
|
| 1142 |
} |
| 1143 |
|
| 1144 |
/*
|
| 1145 |
* if MSR_MCi_CTL is not all 1s, the uncorrected error
|
| 1146 |
* reporting is disabled for the bank
|
| 1147 |
*/
|
| 1148 |
if (banks[0] != ~(uint64_t)0) { |
| 1149 |
monitor_printf(params->mon, |
| 1150 |
"CPU %d: Uncorrected error reporting disabled for"
|
| 1151 |
" bank %d\n",
|
| 1152 |
cpu->cpu_index, params->bank); |
| 1153 |
return;
|
| 1154 |
} |
| 1155 |
|
| 1156 |
if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
|
| 1157 |
!(cenv->cr[4] & CR4_MCE_MASK)) {
|
| 1158 |
monitor_printf(params->mon, |
| 1159 |
"CPU %d: Previous MCE still in progress, raising"
|
| 1160 |
" triple fault\n",
|
| 1161 |
cpu->cpu_index); |
| 1162 |
qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
|
| 1163 |
qemu_system_reset_request(); |
| 1164 |
return;
|
| 1165 |
} |
| 1166 |
if (banks[1] & MCI_STATUS_VAL) { |
| 1167 |
params->status |= MCI_STATUS_OVER; |
| 1168 |
} |
| 1169 |
banks[2] = params->addr;
|
| 1170 |
banks[3] = params->misc;
|
| 1171 |
cenv->mcg_status = params->mcg_status; |
| 1172 |
banks[1] = params->status;
|
| 1173 |
cpu_interrupt(cpu, CPU_INTERRUPT_MCE); |
| 1174 |
} else if (!(banks[1] & MCI_STATUS_VAL) |
| 1175 |
|| !(banks[1] & MCI_STATUS_UC)) {
|
| 1176 |
if (banks[1] & MCI_STATUS_VAL) { |
| 1177 |
params->status |= MCI_STATUS_OVER; |
| 1178 |
} |
| 1179 |
banks[2] = params->addr;
|
| 1180 |
banks[3] = params->misc;
|
| 1181 |
banks[1] = params->status;
|
| 1182 |
} else {
|
| 1183 |
banks[1] |= MCI_STATUS_OVER;
|
| 1184 |
} |
| 1185 |
} |
| 1186 |
|
| 1187 |
void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank, |
| 1188 |
uint64_t status, uint64_t mcg_status, uint64_t addr, |
| 1189 |
uint64_t misc, int flags)
|
| 1190 |
{
|
| 1191 |
CPUState *cs = CPU(cpu); |
| 1192 |
CPUX86State *cenv = &cpu->env; |
| 1193 |
MCEInjectionParams params = {
|
| 1194 |
.mon = mon, |
| 1195 |
.cpu = cpu, |
| 1196 |
.bank = bank, |
| 1197 |
.status = status, |
| 1198 |
.mcg_status = mcg_status, |
| 1199 |
.addr = addr, |
| 1200 |
.misc = misc, |
| 1201 |
.flags = flags, |
| 1202 |
}; |
| 1203 |
unsigned bank_num = cenv->mcg_cap & 0xff; |
| 1204 |
|
| 1205 |
if (!cenv->mcg_cap) {
|
| 1206 |
monitor_printf(mon, "MCE injection not supported\n");
|
| 1207 |
return;
|
| 1208 |
} |
| 1209 |
if (bank >= bank_num) {
|
| 1210 |
monitor_printf(mon, "Invalid MCE bank number\n");
|
| 1211 |
return;
|
| 1212 |
} |
| 1213 |
if (!(status & MCI_STATUS_VAL)) {
|
| 1214 |
monitor_printf(mon, "Invalid MCE status code\n");
|
| 1215 |
return;
|
| 1216 |
} |
| 1217 |
if ((flags & MCE_INJECT_BROADCAST)
|
| 1218 |
&& !cpu_x86_support_mca_broadcast(cenv)) {
|
| 1219 |
monitor_printf(mon, "Guest CPU does not support MCA broadcast\n");
|
| 1220 |
return;
|
| 1221 |
} |
| 1222 |
|
| 1223 |
run_on_cpu(cs, do_inject_x86_mce, ¶ms); |
| 1224 |
if (flags & MCE_INJECT_BROADCAST) {
|
| 1225 |
CPUState *other_cs; |
| 1226 |
|
| 1227 |
params.bank = 1;
|
| 1228 |
params.status = MCI_STATUS_VAL | MCI_STATUS_UC; |
| 1229 |
params.mcg_status = MCG_STATUS_MCIP | MCG_STATUS_RIPV; |
| 1230 |
params.addr = 0;
|
| 1231 |
params.misc = 0;
|
| 1232 |
for (other_cs = first_cpu; other_cs != NULL; |
| 1233 |
other_cs = other_cs->next_cpu) {
|
| 1234 |
if (other_cs == cs) {
|
| 1235 |
continue;
|
| 1236 |
} |
| 1237 |
params.cpu = X86_CPU(other_cs); |
| 1238 |
run_on_cpu(other_cs, do_inject_x86_mce, ¶ms); |
| 1239 |
} |
| 1240 |
} |
| 1241 |
} |
| 1242 |
|
| 1243 |
void cpu_report_tpr_access(CPUX86State *env, TPRAccess access)
|
| 1244 |
{
|
| 1245 |
if (kvm_enabled()) {
|
| 1246 |
env->tpr_access_type = access; |
| 1247 |
|
| 1248 |
cpu_interrupt(CPU(x86_env_get_cpu(env)), CPU_INTERRUPT_TPR); |
| 1249 |
} else {
|
| 1250 |
cpu_restore_state(env, env->mem_io_pc); |
| 1251 |
|
| 1252 |
apic_handle_tpr_access_report(env->apic_state, env->eip, access); |
| 1253 |
} |
| 1254 |
} |
| 1255 |
#endif /* !CONFIG_USER_ONLY */ |
| 1256 |
|
| 1257 |
int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector, |
| 1258 |
target_ulong *base, unsigned int *limit, |
| 1259 |
unsigned int *flags) |
| 1260 |
{
|
| 1261 |
SegmentCache *dt; |
| 1262 |
target_ulong ptr; |
| 1263 |
uint32_t e1, e2; |
| 1264 |
int index;
|
| 1265 |
|
| 1266 |
if (selector & 0x4) |
| 1267 |
dt = &env->ldt; |
| 1268 |
else
|
| 1269 |
dt = &env->gdt; |
| 1270 |
index = selector & ~7;
|
| 1271 |
ptr = dt->base + index; |
| 1272 |
if ((index + 7) > dt->limit |
| 1273 |
|| cpu_memory_rw_debug(env, ptr, (uint8_t *)&e1, sizeof(e1), 0) != 0 |
| 1274 |
|| cpu_memory_rw_debug(env, ptr+4, (uint8_t *)&e2, sizeof(e2), 0) != 0) |
| 1275 |
return 0; |
| 1276 |
|
| 1277 |
*base = ((e1 >> 16) | ((e2 & 0xff) << 16) | (e2 & 0xff000000)); |
| 1278 |
*limit = (e1 & 0xffff) | (e2 & 0x000f0000); |
| 1279 |
if (e2 & DESC_G_MASK)
|
| 1280 |
*limit = (*limit << 12) | 0xfff; |
| 1281 |
*flags = e2; |
| 1282 |
|
| 1283 |
return 1; |
| 1284 |
} |
| 1285 |
|
| 1286 |
#if !defined(CONFIG_USER_ONLY)
|
| 1287 |
void do_cpu_init(X86CPU *cpu)
|
| 1288 |
{
|
| 1289 |
CPUState *cs = CPU(cpu); |
| 1290 |
CPUX86State *env = &cpu->env; |
| 1291 |
int sipi = cs->interrupt_request & CPU_INTERRUPT_SIPI;
|
| 1292 |
uint64_t pat = env->pat; |
| 1293 |
|
| 1294 |
cpu_reset(cs); |
| 1295 |
cs->interrupt_request = sipi; |
| 1296 |
env->pat = pat; |
| 1297 |
apic_init_reset(env->apic_state); |
| 1298 |
} |
| 1299 |
|
| 1300 |
void do_cpu_sipi(X86CPU *cpu)
|
| 1301 |
{
|
| 1302 |
CPUX86State *env = &cpu->env; |
| 1303 |
|
| 1304 |
apic_sipi(env->apic_state); |
| 1305 |
} |
| 1306 |
#else
|
| 1307 |
void do_cpu_init(X86CPU *cpu)
|
| 1308 |
{
|
| 1309 |
} |
| 1310 |
void do_cpu_sipi(X86CPU *cpu)
|
| 1311 |
{
|
| 1312 |
} |
| 1313 |
#endif
|