root / target-i386 / helper.c @ 0d0266a5
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
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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 <assert.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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|
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//#define DEBUG_MMU
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|
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static void add_flagname_to_bitmaps(char *flagname, uint32_t *features, |
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uint32_t *ext_features, |
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uint32_t *ext2_features, |
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uint32_t *ext3_features) |
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{
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int i;
|
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/* feature flags taken from "Intel Processor Identification and the CPUID
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* Instruction" and AMD's "CPUID Specification". In cases of disagreement
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* about feature names, the Linux name is used. */
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static const char *feature_name[] = { |
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"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", |
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"cx8", "apic", NULL, "sep", "mtrr", "pge", "mca", "cmov", |
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"pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */, NULL, "ds" /* Intel dts */, "acpi", "mmx", |
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"fxsr", "sse", "sse2", "ss", "ht" /* Intel htt */, "tm", "ia64", "pbe", |
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}; |
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static const char *ext_feature_name[] = { |
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"pni" /* Intel,AMD sse3 */, NULL, NULL, "monitor", "ds_cpl", "vmx", NULL /* Linux smx */, "est", |
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"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL, |
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NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt", |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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}; |
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static const char *ext2_feature_name[] = { |
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"fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce", |
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"cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall", "mtrr", "pge", "mca", "cmov", |
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"pat", "pse36", NULL, NULL /* Linux mp */, "nx" /* Intel xd */, NULL, "mmxext", "mmx", |
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"fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp", NULL, "lm" /* Intel 64 */, "3dnowext", "3dnow", |
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}; |
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static const char *ext3_feature_name[] = { |
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"lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */, "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse", |
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"3dnowprefetch", "osvw", NULL /* Linux ibs */, NULL, "skinit", "wdt", NULL, NULL, |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
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}; |
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|
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for ( i = 0 ; i < 32 ; i++ ) |
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if (feature_name[i] && !strcmp (flagname, feature_name[i])) {
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*features |= 1 << i;
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return;
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} |
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for ( i = 0 ; i < 32 ; i++ ) |
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if (ext_feature_name[i] && !strcmp (flagname, ext_feature_name[i])) {
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*ext_features |= 1 << i;
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return;
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} |
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for ( i = 0 ; i < 32 ; i++ ) |
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if (ext2_feature_name[i] && !strcmp (flagname, ext2_feature_name[i])) {
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*ext2_features |= 1 << i;
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return;
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} |
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for ( i = 0 ; i < 32 ; i++ ) |
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if (ext3_feature_name[i] && !strcmp (flagname, ext3_feature_name[i])) {
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*ext3_features |= 1 << i;
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return;
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} |
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fprintf(stderr, "CPU feature %s not found\n", flagname);
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} |
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|
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typedef struct x86_def_t { |
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const char *name; |
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uint32_t level; |
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uint32_t vendor1, vendor2, vendor3; |
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int family;
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int model;
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int stepping;
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uint32_t features, ext_features, ext2_features, ext3_features; |
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uint32_t xlevel; |
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char model_id[48]; |
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} x86_def_t; |
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|
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#define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
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#define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
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CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX) |
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#define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
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CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \ |
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CPUID_PSE36 | CPUID_FXSR) |
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#define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
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#define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
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CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \ |
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CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \ |
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CPUID_PAE | CPUID_SEP | CPUID_APIC) |
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static x86_def_t x86_defs[] = {
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#ifdef TARGET_X86_64
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{
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.name = "qemu64",
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.level = 2,
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.vendor1 = CPUID_VENDOR_AMD_1, |
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.vendor2 = CPUID_VENDOR_AMD_2, |
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.vendor3 = CPUID_VENDOR_AMD_3, |
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.family = 6,
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.model = 2,
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.stepping = 3,
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.features = PPRO_FEATURES | |
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/* these features are needed for Win64 and aren't fully implemented */
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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/* this feature is needed for Solaris and isn't fully implemented */
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CPUID_PSE36, |
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.ext_features = CPUID_EXT_SSE3, |
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.ext2_features = (PPRO_FEATURES & 0x0183F3FF) |
|
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CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX | |
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CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT, |
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.ext3_features = CPUID_EXT3_SVM, |
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.xlevel = 0x8000000A,
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.model_id = "QEMU Virtual CPU version " QEMU_VERSION,
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}, |
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{
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.name = "phenom",
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.level = 5,
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.vendor1 = CPUID_VENDOR_AMD_1, |
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.vendor2 = CPUID_VENDOR_AMD_2, |
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.vendor3 = CPUID_VENDOR_AMD_3, |
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.family = 16,
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.model = 2,
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.stepping = 3,
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/* Missing: CPUID_VME, CPUID_HT */
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.features = PPRO_FEATURES | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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CPUID_PSE36, |
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/* Missing: CPUID_EXT_CX16, CPUID_EXT_POPCNT */
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR, |
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/* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
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.ext2_features = (PPRO_FEATURES & 0x0183F3FF) |
|
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CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX | |
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CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT | |
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CPUID_EXT2_FFXSR, |
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/* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
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CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
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CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
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CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
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.ext3_features = CPUID_EXT3_SVM, |
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.xlevel = 0x8000001A,
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.model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
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}, |
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{
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.name = "core2duo",
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.level = 10,
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.family = 6,
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.model = 15,
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.stepping = 11,
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/* The original CPU also implements these features:
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CPUID_VME, CPUID_DTS, CPUID_ACPI, CPUID_SS, CPUID_HT,
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CPUID_TM, CPUID_PBE */
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.features = PPRO_FEATURES | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | |
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CPUID_PSE36, |
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/* The original CPU also implements these ext features:
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CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
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CPUID_EXT_TM2, CPUID_EXT_CX16, CPUID_EXT_XTPR, CPUID_EXT_PDCM */
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3, |
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.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX, |
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/* Missing: .ext3_features = CPUID_EXT3_LAHF_LM */
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.xlevel = 0x80000008,
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.model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
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}, |
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#endif
|
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{
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.name = "qemu32",
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.level = 2,
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.family = 6,
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.model = 3,
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.stepping = 3,
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.features = PPRO_FEATURES, |
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.ext_features = CPUID_EXT_SSE3, |
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.xlevel = 0,
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.model_id = "QEMU Virtual CPU version " QEMU_VERSION,
|
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}, |
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{
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.name = "coreduo",
|
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.level = 10,
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.family = 6,
|
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.model = 14,
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.stepping = 8,
|
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/* The original CPU also implements these features:
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CPUID_DTS, CPUID_ACPI, CPUID_SS, CPUID_HT,
|
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CPUID_TM, CPUID_PBE */
|
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.features = PPRO_FEATURES | CPUID_VME | |
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CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA, |
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/* The original CPU also implements these ext features:
|
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CPUID_EXT_VMX, CPUID_EXT_EST, CPUID_EXT_TM2, CPUID_EXT_XTPR,
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CPUID_EXT_PDCM */
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.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR, |
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.ext2_features = CPUID_EXT2_NX, |
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.xlevel = 0x80000008,
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.model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
|
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}, |
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{
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.name = "486",
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.level = 0,
|
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.family = 4,
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.model = 0,
|
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.stepping = 0,
|
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.features = I486_FEATURES, |
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.xlevel = 0,
|
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}, |
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{
|
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.name = "pentium",
|
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.level = 1,
|
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.family = 5,
|
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.model = 4,
|
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.stepping = 3,
|
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.features = PENTIUM_FEATURES, |
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.xlevel = 0,
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}, |
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{
|
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.name = "pentium2",
|
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.level = 2,
|
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.family = 6,
|
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.model = 5,
|
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.stepping = 2,
|
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.features = PENTIUM2_FEATURES, |
| 244 |
.xlevel = 0,
|
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}, |
| 246 |
{
|
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.name = "pentium3",
|
| 248 |
.level = 2,
|
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.family = 6,
|
| 250 |
.model = 7,
|
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.stepping = 3,
|
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.features = PENTIUM3_FEATURES, |
| 253 |
.xlevel = 0,
|
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}, |
| 255 |
{
|
| 256 |
.name = "athlon",
|
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.level = 2,
|
| 258 |
.vendor1 = 0x68747541, /* "Auth" */ |
| 259 |
.vendor2 = 0x69746e65, /* "enti" */ |
| 260 |
.vendor3 = 0x444d4163, /* "cAMD" */ |
| 261 |
.family = 6,
|
| 262 |
.model = 2,
|
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.stepping = 3,
|
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.features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA, |
| 265 |
.ext2_features = (PPRO_FEATURES & 0x0183F3FF) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
|
| 266 |
.xlevel = 0x80000008,
|
| 267 |
/* XXX: put another string ? */
|
| 268 |
.model_id = "QEMU Virtual CPU version " QEMU_VERSION,
|
| 269 |
}, |
| 270 |
{
|
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.name = "n270",
|
| 272 |
/* original is on level 10 */
|
| 273 |
.level = 5,
|
| 274 |
.family = 6,
|
| 275 |
.model = 28,
|
| 276 |
.stepping = 2,
|
| 277 |
.features = PPRO_FEATURES | |
| 278 |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME, |
| 279 |
/* Missing: CPUID_DTS | CPUID_ACPI | CPUID_SS |
|
| 280 |
* CPUID_HT | CPUID_TM | CPUID_PBE */
|
| 281 |
/* Some CPUs got no CPUID_SEP */
|
| 282 |
.ext_features = CPUID_EXT_MONITOR | |
| 283 |
CPUID_EXT_SSE3 /* PNI */ | CPUID_EXT_SSSE3,
|
| 284 |
/* Missing: CPUID_EXT_DSCPL | CPUID_EXT_EST |
|
| 285 |
* CPUID_EXT_TM2 | CPUID_EXT_XTPR */
|
| 286 |
.ext2_features = (PPRO_FEATURES & 0x0183F3FF) | CPUID_EXT2_NX,
|
| 287 |
/* Missing: .ext3_features = CPUID_EXT3_LAHF_LM */
|
| 288 |
.xlevel = 0x8000000A,
|
| 289 |
.model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
|
| 290 |
}, |
| 291 |
}; |
| 292 |
|
| 293 |
static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model) |
| 294 |
{
|
| 295 |
unsigned int i; |
| 296 |
x86_def_t *def; |
| 297 |
|
| 298 |
char *s = strdup(cpu_model);
|
| 299 |
char *featurestr, *name = strtok(s, ","); |
| 300 |
uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0; |
| 301 |
uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0; |
| 302 |
int family = -1, model = -1, stepping = -1; |
| 303 |
|
| 304 |
def = NULL;
|
| 305 |
for (i = 0; i < ARRAY_SIZE(x86_defs); i++) { |
| 306 |
if (strcmp(name, x86_defs[i].name) == 0) { |
| 307 |
def = &x86_defs[i]; |
| 308 |
break;
|
| 309 |
} |
| 310 |
} |
| 311 |
if (!def)
|
| 312 |
goto error;
|
| 313 |
memcpy(x86_cpu_def, def, sizeof(*def));
|
| 314 |
|
| 315 |
featurestr = strtok(NULL, ","); |
| 316 |
|
| 317 |
while (featurestr) {
|
| 318 |
char *val;
|
| 319 |
if (featurestr[0] == '+') { |
| 320 |
add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features);
|
| 321 |
} else if (featurestr[0] == '-') { |
| 322 |
add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features);
|
| 323 |
} else if ((val = strchr(featurestr, '='))) { |
| 324 |
*val = 0; val++;
|
| 325 |
if (!strcmp(featurestr, "family")) { |
| 326 |
char *err;
|
| 327 |
family = strtol(val, &err, 10);
|
| 328 |
if (!*val || *err || family < 0) { |
| 329 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 330 |
goto error;
|
| 331 |
} |
| 332 |
x86_cpu_def->family = family; |
| 333 |
} else if (!strcmp(featurestr, "model")) { |
| 334 |
char *err;
|
| 335 |
model = strtol(val, &err, 10);
|
| 336 |
if (!*val || *err || model < 0 || model > 0xff) { |
| 337 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 338 |
goto error;
|
| 339 |
} |
| 340 |
x86_cpu_def->model = model; |
| 341 |
} else if (!strcmp(featurestr, "stepping")) { |
| 342 |
char *err;
|
| 343 |
stepping = strtol(val, &err, 10);
|
| 344 |
if (!*val || *err || stepping < 0 || stepping > 0xf) { |
| 345 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 346 |
goto error;
|
| 347 |
} |
| 348 |
x86_cpu_def->stepping = stepping; |
| 349 |
} else if (!strcmp(featurestr, "vendor")) { |
| 350 |
if (strlen(val) != 12) { |
| 351 |
fprintf(stderr, "vendor string must be 12 chars long\n");
|
| 352 |
goto error;
|
| 353 |
} |
| 354 |
x86_cpu_def->vendor1 = 0;
|
| 355 |
x86_cpu_def->vendor2 = 0;
|
| 356 |
x86_cpu_def->vendor3 = 0;
|
| 357 |
for(i = 0; i < 4; i++) { |
| 358 |
x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
|
| 359 |
x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i); |
| 360 |
x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i); |
| 361 |
} |
| 362 |
} else if (!strcmp(featurestr, "model_id")) { |
| 363 |
pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
|
| 364 |
val); |
| 365 |
} else {
|
| 366 |
fprintf(stderr, "unrecognized feature %s\n", featurestr);
|
| 367 |
goto error;
|
| 368 |
} |
| 369 |
} else {
|
| 370 |
fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
|
| 371 |
goto error;
|
| 372 |
} |
| 373 |
featurestr = strtok(NULL, ","); |
| 374 |
} |
| 375 |
x86_cpu_def->features |= plus_features; |
| 376 |
x86_cpu_def->ext_features |= plus_ext_features; |
| 377 |
x86_cpu_def->ext2_features |= plus_ext2_features; |
| 378 |
x86_cpu_def->ext3_features |= plus_ext3_features; |
| 379 |
x86_cpu_def->features &= ~minus_features; |
| 380 |
x86_cpu_def->ext_features &= ~minus_ext_features; |
| 381 |
x86_cpu_def->ext2_features &= ~minus_ext2_features; |
| 382 |
x86_cpu_def->ext3_features &= ~minus_ext3_features; |
| 383 |
free(s); |
| 384 |
return 0; |
| 385 |
|
| 386 |
error:
|
| 387 |
free(s); |
| 388 |
return -1; |
| 389 |
} |
| 390 |
|
| 391 |
void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...)) |
| 392 |
{
|
| 393 |
unsigned int i; |
| 394 |
|
| 395 |
for (i = 0; i < ARRAY_SIZE(x86_defs); i++) |
| 396 |
(*cpu_fprintf)(f, "x86 %16s\n", x86_defs[i].name);
|
| 397 |
} |
| 398 |
|
| 399 |
static int cpu_x86_register (CPUX86State *env, const char *cpu_model) |
| 400 |
{
|
| 401 |
x86_def_t def1, *def = &def1; |
| 402 |
|
| 403 |
if (cpu_x86_find_by_name(def, cpu_model) < 0) |
| 404 |
return -1; |
| 405 |
if (def->vendor1) {
|
| 406 |
env->cpuid_vendor1 = def->vendor1; |
| 407 |
env->cpuid_vendor2 = def->vendor2; |
| 408 |
env->cpuid_vendor3 = def->vendor3; |
| 409 |
} else {
|
| 410 |
env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1; |
| 411 |
env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2; |
| 412 |
env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3; |
| 413 |
} |
| 414 |
env->cpuid_level = def->level; |
| 415 |
if (def->family > 0x0f) |
| 416 |
env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20); |
| 417 |
else
|
| 418 |
env->cpuid_version = def->family << 8;
|
| 419 |
env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16); |
| 420 |
env->cpuid_version |= def->stepping; |
| 421 |
env->cpuid_features = def->features; |
| 422 |
env->pat = 0x0007040600070406ULL;
|
| 423 |
env->cpuid_ext_features = def->ext_features; |
| 424 |
env->cpuid_ext2_features = def->ext2_features; |
| 425 |
env->cpuid_xlevel = def->xlevel; |
| 426 |
env->cpuid_ext3_features = def->ext3_features; |
| 427 |
{
|
| 428 |
const char *model_id = def->model_id; |
| 429 |
int c, len, i;
|
| 430 |
if (!model_id)
|
| 431 |
model_id = "";
|
| 432 |
len = strlen(model_id); |
| 433 |
for(i = 0; i < 48; i++) { |
| 434 |
if (i >= len)
|
| 435 |
c = '\0';
|
| 436 |
else
|
| 437 |
c = (uint8_t)model_id[i]; |
| 438 |
env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); |
| 439 |
} |
| 440 |
} |
| 441 |
return 0; |
| 442 |
} |
| 443 |
|
| 444 |
/* NOTE: must be called outside the CPU execute loop */
|
| 445 |
void cpu_reset(CPUX86State *env)
|
| 446 |
{
|
| 447 |
int i;
|
| 448 |
|
| 449 |
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
|
| 450 |
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
|
| 451 |
log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP); |
| 452 |
} |
| 453 |
|
| 454 |
memset(env, 0, offsetof(CPUX86State, breakpoints));
|
| 455 |
|
| 456 |
tlb_flush(env, 1);
|
| 457 |
|
| 458 |
env->old_exception = -1;
|
| 459 |
|
| 460 |
/* init to reset state */
|
| 461 |
|
| 462 |
#ifdef CONFIG_SOFTMMU
|
| 463 |
env->hflags |= HF_SOFTMMU_MASK; |
| 464 |
#endif
|
| 465 |
env->hflags2 |= HF2_GIF_MASK; |
| 466 |
|
| 467 |
cpu_x86_update_cr0(env, 0x60000010);
|
| 468 |
env->a20_mask = ~0x0;
|
| 469 |
env->smbase = 0x30000;
|
| 470 |
|
| 471 |
env->idt.limit = 0xffff;
|
| 472 |
env->gdt.limit = 0xffff;
|
| 473 |
env->ldt.limit = 0xffff;
|
| 474 |
env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
|
| 475 |
env->tr.limit = 0xffff;
|
| 476 |
env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
|
| 477 |
|
| 478 |
cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, |
| 479 |
DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK | DESC_R_MASK); |
| 480 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, |
| 481 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK); |
| 482 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, |
| 483 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK); |
| 484 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, |
| 485 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK); |
| 486 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, |
| 487 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK); |
| 488 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, |
| 489 |
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK); |
| 490 |
|
| 491 |
env->eip = 0xfff0;
|
| 492 |
env->regs[R_EDX] = env->cpuid_version; |
| 493 |
|
| 494 |
env->eflags = 0x2;
|
| 495 |
|
| 496 |
/* FPU init */
|
| 497 |
for(i = 0;i < 8; i++) |
| 498 |
env->fptags[i] = 1;
|
| 499 |
env->fpuc = 0x37f;
|
| 500 |
|
| 501 |
env->mxcsr = 0x1f80;
|
| 502 |
|
| 503 |
memset(env->dr, 0, sizeof(env->dr)); |
| 504 |
env->dr[6] = DR6_FIXED_1;
|
| 505 |
env->dr[7] = DR7_FIXED_1;
|
| 506 |
cpu_breakpoint_remove_all(env, BP_CPU); |
| 507 |
cpu_watchpoint_remove_all(env, BP_CPU); |
| 508 |
} |
| 509 |
|
| 510 |
void cpu_x86_close(CPUX86State *env)
|
| 511 |
{
|
| 512 |
qemu_free(env); |
| 513 |
} |
| 514 |
|
| 515 |
/***********************************************************/
|
| 516 |
/* x86 debug */
|
| 517 |
|
| 518 |
static const char *cc_op_str[] = { |
| 519 |
"DYNAMIC",
|
| 520 |
"EFLAGS",
|
| 521 |
|
| 522 |
"MULB",
|
| 523 |
"MULW",
|
| 524 |
"MULL",
|
| 525 |
"MULQ",
|
| 526 |
|
| 527 |
"ADDB",
|
| 528 |
"ADDW",
|
| 529 |
"ADDL",
|
| 530 |
"ADDQ",
|
| 531 |
|
| 532 |
"ADCB",
|
| 533 |
"ADCW",
|
| 534 |
"ADCL",
|
| 535 |
"ADCQ",
|
| 536 |
|
| 537 |
"SUBB",
|
| 538 |
"SUBW",
|
| 539 |
"SUBL",
|
| 540 |
"SUBQ",
|
| 541 |
|
| 542 |
"SBBB",
|
| 543 |
"SBBW",
|
| 544 |
"SBBL",
|
| 545 |
"SBBQ",
|
| 546 |
|
| 547 |
"LOGICB",
|
| 548 |
"LOGICW",
|
| 549 |
"LOGICL",
|
| 550 |
"LOGICQ",
|
| 551 |
|
| 552 |
"INCB",
|
| 553 |
"INCW",
|
| 554 |
"INCL",
|
| 555 |
"INCQ",
|
| 556 |
|
| 557 |
"DECB",
|
| 558 |
"DECW",
|
| 559 |
"DECL",
|
| 560 |
"DECQ",
|
| 561 |
|
| 562 |
"SHLB",
|
| 563 |
"SHLW",
|
| 564 |
"SHLL",
|
| 565 |
"SHLQ",
|
| 566 |
|
| 567 |
"SARB",
|
| 568 |
"SARW",
|
| 569 |
"SARL",
|
| 570 |
"SARQ",
|
| 571 |
}; |
| 572 |
|
| 573 |
void cpu_dump_state(CPUState *env, FILE *f,
|
| 574 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
| 575 |
int flags)
|
| 576 |
{
|
| 577 |
int eflags, i, nb;
|
| 578 |
char cc_op_name[32]; |
| 579 |
static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; |
| 580 |
|
| 581 |
eflags = env->eflags; |
| 582 |
#ifdef TARGET_X86_64
|
| 583 |
if (env->hflags & HF_CS64_MASK) {
|
| 584 |
cpu_fprintf(f, |
| 585 |
"RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" |
| 586 |
"RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" |
| 587 |
"R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" |
| 588 |
"R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" |
| 589 |
"RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
| 590 |
env->regs[R_EAX], |
| 591 |
env->regs[R_EBX], |
| 592 |
env->regs[R_ECX], |
| 593 |
env->regs[R_EDX], |
| 594 |
env->regs[R_ESI], |
| 595 |
env->regs[R_EDI], |
| 596 |
env->regs[R_EBP], |
| 597 |
env->regs[R_ESP], |
| 598 |
env->regs[8],
|
| 599 |
env->regs[9],
|
| 600 |
env->regs[10],
|
| 601 |
env->regs[11],
|
| 602 |
env->regs[12],
|
| 603 |
env->regs[13],
|
| 604 |
env->regs[14],
|
| 605 |
env->regs[15],
|
| 606 |
env->eip, eflags, |
| 607 |
eflags & DF_MASK ? 'D' : '-', |
| 608 |
eflags & CC_O ? 'O' : '-', |
| 609 |
eflags & CC_S ? 'S' : '-', |
| 610 |
eflags & CC_Z ? 'Z' : '-', |
| 611 |
eflags & CC_A ? 'A' : '-', |
| 612 |
eflags & CC_P ? 'P' : '-', |
| 613 |
eflags & CC_C ? 'C' : '-', |
| 614 |
env->hflags & HF_CPL_MASK, |
| 615 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 616 |
(int)(env->a20_mask >> 20) & 1, |
| 617 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 618 |
env->halted); |
| 619 |
} else
|
| 620 |
#endif
|
| 621 |
{
|
| 622 |
cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
|
| 623 |
"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
|
| 624 |
"EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
|
| 625 |
(uint32_t)env->regs[R_EAX], |
| 626 |
(uint32_t)env->regs[R_EBX], |
| 627 |
(uint32_t)env->regs[R_ECX], |
| 628 |
(uint32_t)env->regs[R_EDX], |
| 629 |
(uint32_t)env->regs[R_ESI], |
| 630 |
(uint32_t)env->regs[R_EDI], |
| 631 |
(uint32_t)env->regs[R_EBP], |
| 632 |
(uint32_t)env->regs[R_ESP], |
| 633 |
(uint32_t)env->eip, eflags, |
| 634 |
eflags & DF_MASK ? 'D' : '-', |
| 635 |
eflags & CC_O ? 'O' : '-', |
| 636 |
eflags & CC_S ? 'S' : '-', |
| 637 |
eflags & CC_Z ? 'Z' : '-', |
| 638 |
eflags & CC_A ? 'A' : '-', |
| 639 |
eflags & CC_P ? 'P' : '-', |
| 640 |
eflags & CC_C ? 'C' : '-', |
| 641 |
env->hflags & HF_CPL_MASK, |
| 642 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 643 |
(int)(env->a20_mask >> 20) & 1, |
| 644 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 645 |
env->halted); |
| 646 |
} |
| 647 |
|
| 648 |
#ifdef TARGET_X86_64
|
| 649 |
if (env->hflags & HF_LMA_MASK) {
|
| 650 |
for(i = 0; i < 6; i++) { |
| 651 |
SegmentCache *sc = &env->segs[i]; |
| 652 |
cpu_fprintf(f, "%s =%04x %016" PRIx64 " %08x %08x\n", |
| 653 |
seg_name[i], |
| 654 |
sc->selector, |
| 655 |
sc->base, |
| 656 |
sc->limit, |
| 657 |
sc->flags); |
| 658 |
} |
| 659 |
cpu_fprintf(f, "LDT=%04x %016" PRIx64 " %08x %08x\n", |
| 660 |
env->ldt.selector, |
| 661 |
env->ldt.base, |
| 662 |
env->ldt.limit, |
| 663 |
env->ldt.flags); |
| 664 |
cpu_fprintf(f, "TR =%04x %016" PRIx64 " %08x %08x\n", |
| 665 |
env->tr.selector, |
| 666 |
env->tr.base, |
| 667 |
env->tr.limit, |
| 668 |
env->tr.flags); |
| 669 |
cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
| 670 |
env->gdt.base, env->gdt.limit); |
| 671 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
| 672 |
env->idt.base, env->idt.limit); |
| 673 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
| 674 |
(uint32_t)env->cr[0],
|
| 675 |
env->cr[2],
|
| 676 |
env->cr[3],
|
| 677 |
(uint32_t)env->cr[4]);
|
| 678 |
for(i = 0; i < 4; i++) |
| 679 |
cpu_fprintf(f, "DR%d=%016" PRIx64 " ", i, env->dr[i]); |
| 680 |
cpu_fprintf(f, "\nDR6=%016" PRIx64 " DR7=%016" PRIx64 "\n", |
| 681 |
env->dr[6], env->dr[7]); |
| 682 |
} else
|
| 683 |
#endif
|
| 684 |
{
|
| 685 |
for(i = 0; i < 6; i++) { |
| 686 |
SegmentCache *sc = &env->segs[i]; |
| 687 |
cpu_fprintf(f, "%s =%04x %08x %08x %08x\n",
|
| 688 |
seg_name[i], |
| 689 |
sc->selector, |
| 690 |
(uint32_t)sc->base, |
| 691 |
sc->limit, |
| 692 |
sc->flags); |
| 693 |
} |
| 694 |
cpu_fprintf(f, "LDT=%04x %08x %08x %08x\n",
|
| 695 |
env->ldt.selector, |
| 696 |
(uint32_t)env->ldt.base, |
| 697 |
env->ldt.limit, |
| 698 |
env->ldt.flags); |
| 699 |
cpu_fprintf(f, "TR =%04x %08x %08x %08x\n",
|
| 700 |
env->tr.selector, |
| 701 |
(uint32_t)env->tr.base, |
| 702 |
env->tr.limit, |
| 703 |
env->tr.flags); |
| 704 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
| 705 |
(uint32_t)env->gdt.base, env->gdt.limit); |
| 706 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
| 707 |
(uint32_t)env->idt.base, env->idt.limit); |
| 708 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
| 709 |
(uint32_t)env->cr[0],
|
| 710 |
(uint32_t)env->cr[2],
|
| 711 |
(uint32_t)env->cr[3],
|
| 712 |
(uint32_t)env->cr[4]);
|
| 713 |
for(i = 0; i < 4; i++) |
| 714 |
cpu_fprintf(f, "DR%d=%08x ", i, env->dr[i]);
|
| 715 |
cpu_fprintf(f, "\nDR6=%08x DR7=%08x\n", env->dr[6], env->dr[7]); |
| 716 |
} |
| 717 |
if (flags & X86_DUMP_CCOP) {
|
| 718 |
if ((unsigned)env->cc_op < CC_OP_NB) |
| 719 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
| 720 |
else
|
| 721 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
| 722 |
#ifdef TARGET_X86_64
|
| 723 |
if (env->hflags & HF_CS64_MASK) {
|
| 724 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
| 725 |
env->cc_src, env->cc_dst, |
| 726 |
cc_op_name); |
| 727 |
} else
|
| 728 |
#endif
|
| 729 |
{
|
| 730 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
| 731 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
| 732 |
cc_op_name); |
| 733 |
} |
| 734 |
} |
| 735 |
if (flags & X86_DUMP_FPU) {
|
| 736 |
int fptag;
|
| 737 |
fptag = 0;
|
| 738 |
for(i = 0; i < 8; i++) { |
| 739 |
fptag |= ((!env->fptags[i]) << i); |
| 740 |
} |
| 741 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
| 742 |
env->fpuc, |
| 743 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
| 744 |
env->fpstt, |
| 745 |
fptag, |
| 746 |
env->mxcsr); |
| 747 |
for(i=0;i<8;i++) { |
| 748 |
#if defined(USE_X86LDOUBLE)
|
| 749 |
union {
|
| 750 |
long double d; |
| 751 |
struct {
|
| 752 |
uint64_t lower; |
| 753 |
uint16_t upper; |
| 754 |
} l; |
| 755 |
} tmp; |
| 756 |
tmp.d = env->fpregs[i].d; |
| 757 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
| 758 |
i, tmp.l.lower, tmp.l.upper); |
| 759 |
#else
|
| 760 |
cpu_fprintf(f, "FPR%d=%016" PRIx64,
|
| 761 |
i, env->fpregs[i].mmx.q); |
| 762 |
#endif
|
| 763 |
if ((i & 1) == 1) |
| 764 |
cpu_fprintf(f, "\n");
|
| 765 |
else
|
| 766 |
cpu_fprintf(f, " ");
|
| 767 |
} |
| 768 |
if (env->hflags & HF_CS64_MASK)
|
| 769 |
nb = 16;
|
| 770 |
else
|
| 771 |
nb = 8;
|
| 772 |
for(i=0;i<nb;i++) { |
| 773 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
| 774 |
i, |
| 775 |
env->xmm_regs[i].XMM_L(3),
|
| 776 |
env->xmm_regs[i].XMM_L(2),
|
| 777 |
env->xmm_regs[i].XMM_L(1),
|
| 778 |
env->xmm_regs[i].XMM_L(0));
|
| 779 |
if ((i & 1) == 1) |
| 780 |
cpu_fprintf(f, "\n");
|
| 781 |
else
|
| 782 |
cpu_fprintf(f, " ");
|
| 783 |
} |
| 784 |
} |
| 785 |
} |
| 786 |
|
| 787 |
/***********************************************************/
|
| 788 |
/* x86 mmu */
|
| 789 |
/* XXX: add PGE support */
|
| 790 |
|
| 791 |
void cpu_x86_set_a20(CPUX86State *env, int a20_state) |
| 792 |
{
|
| 793 |
a20_state = (a20_state != 0);
|
| 794 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
| 795 |
#if defined(DEBUG_MMU)
|
| 796 |
printf("A20 update: a20=%d\n", a20_state);
|
| 797 |
#endif
|
| 798 |
/* if the cpu is currently executing code, we must unlink it and
|
| 799 |
all the potentially executing TB */
|
| 800 |
cpu_interrupt(env, CPU_INTERRUPT_EXITTB); |
| 801 |
|
| 802 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
| 803 |
we must flush everything */
|
| 804 |
tlb_flush(env, 1);
|
| 805 |
env->a20_mask = (~0x100000) | (a20_state << 20); |
| 806 |
} |
| 807 |
} |
| 808 |
|
| 809 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
| 810 |
{
|
| 811 |
int pe_state;
|
| 812 |
|
| 813 |
#if defined(DEBUG_MMU)
|
| 814 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
| 815 |
#endif
|
| 816 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
| 817 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
| 818 |
tlb_flush(env, 1);
|
| 819 |
} |
| 820 |
|
| 821 |
#ifdef TARGET_X86_64
|
| 822 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
| 823 |
(env->efer & MSR_EFER_LME)) {
|
| 824 |
/* enter in long mode */
|
| 825 |
/* XXX: generate an exception */
|
| 826 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
| 827 |
return;
|
| 828 |
env->efer |= MSR_EFER_LMA; |
| 829 |
env->hflags |= HF_LMA_MASK; |
| 830 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
| 831 |
(env->efer & MSR_EFER_LMA)) {
|
| 832 |
/* exit long mode */
|
| 833 |
env->efer &= ~MSR_EFER_LMA; |
| 834 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
| 835 |
env->eip &= 0xffffffff;
|
| 836 |
} |
| 837 |
#endif
|
| 838 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
| 839 |
|
| 840 |
/* update PE flag in hidden flags */
|
| 841 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
| 842 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
| 843 |
/* ensure that ADDSEG is always set in real mode */
|
| 844 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
| 845 |
/* update FPU flags */
|
| 846 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
| 847 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
| 848 |
} |
| 849 |
|
| 850 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
| 851 |
the PDPT */
|
| 852 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
| 853 |
{
|
| 854 |
env->cr[3] = new_cr3;
|
| 855 |
if (env->cr[0] & CR0_PG_MASK) { |
| 856 |
#if defined(DEBUG_MMU)
|
| 857 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
| 858 |
#endif
|
| 859 |
tlb_flush(env, 0);
|
| 860 |
} |
| 861 |
} |
| 862 |
|
| 863 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
| 864 |
{
|
| 865 |
#if defined(DEBUG_MMU)
|
| 866 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
| 867 |
#endif
|
| 868 |
if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
|
| 869 |
(env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
|
| 870 |
tlb_flush(env, 1);
|
| 871 |
} |
| 872 |
/* SSE handling */
|
| 873 |
if (!(env->cpuid_features & CPUID_SSE))
|
| 874 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
| 875 |
if (new_cr4 & CR4_OSFXSR_MASK)
|
| 876 |
env->hflags |= HF_OSFXSR_MASK; |
| 877 |
else
|
| 878 |
env->hflags &= ~HF_OSFXSR_MASK; |
| 879 |
|
| 880 |
env->cr[4] = new_cr4;
|
| 881 |
} |
| 882 |
|
| 883 |
#if defined(CONFIG_USER_ONLY)
|
| 884 |
|
| 885 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 886 |
int is_write, int mmu_idx, int is_softmmu) |
| 887 |
{
|
| 888 |
/* user mode only emulation */
|
| 889 |
is_write &= 1;
|
| 890 |
env->cr[2] = addr;
|
| 891 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
| 892 |
env->error_code |= PG_ERROR_U_MASK; |
| 893 |
env->exception_index = EXCP0E_PAGE; |
| 894 |
return 1; |
| 895 |
} |
| 896 |
|
| 897 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 898 |
{
|
| 899 |
return addr;
|
| 900 |
} |
| 901 |
|
| 902 |
#else
|
| 903 |
|
| 904 |
/* XXX: This value should match the one returned by CPUID
|
| 905 |
* and in exec.c */
|
| 906 |
#if defined(USE_KQEMU)
|
| 907 |
#define PHYS_ADDR_MASK 0xfffff000LL |
| 908 |
#else
|
| 909 |
# if defined(TARGET_X86_64)
|
| 910 |
# define PHYS_ADDR_MASK 0xfffffff000LL |
| 911 |
# else
|
| 912 |
# define PHYS_ADDR_MASK 0xffffff000LL |
| 913 |
# endif
|
| 914 |
#endif
|
| 915 |
|
| 916 |
/* return value:
|
| 917 |
-1 = cannot handle fault
|
| 918 |
0 = nothing more to do
|
| 919 |
1 = generate PF fault
|
| 920 |
2 = soft MMU activation required for this block
|
| 921 |
*/
|
| 922 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 923 |
int is_write1, int mmu_idx, int is_softmmu) |
| 924 |
{
|
| 925 |
uint64_t ptep, pte; |
| 926 |
target_ulong pde_addr, pte_addr; |
| 927 |
int error_code, is_dirty, prot, page_size, ret, is_write, is_user;
|
| 928 |
target_phys_addr_t paddr; |
| 929 |
uint32_t page_offset; |
| 930 |
target_ulong vaddr, virt_addr; |
| 931 |
|
| 932 |
is_user = mmu_idx == MMU_USER_IDX; |
| 933 |
#if defined(DEBUG_MMU)
|
| 934 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
| 935 |
addr, is_write1, is_user, env->eip); |
| 936 |
#endif
|
| 937 |
is_write = is_write1 & 1;
|
| 938 |
|
| 939 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 940 |
pte = addr; |
| 941 |
virt_addr = addr & TARGET_PAGE_MASK; |
| 942 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 943 |
page_size = 4096;
|
| 944 |
goto do_mapping;
|
| 945 |
} |
| 946 |
|
| 947 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 948 |
uint64_t pde, pdpe; |
| 949 |
target_ulong pdpe_addr; |
| 950 |
|
| 951 |
#ifdef TARGET_X86_64
|
| 952 |
if (env->hflags & HF_LMA_MASK) {
|
| 953 |
uint64_t pml4e_addr, pml4e; |
| 954 |
int32_t sext; |
| 955 |
|
| 956 |
/* test virtual address sign extension */
|
| 957 |
sext = (int64_t)addr >> 47;
|
| 958 |
if (sext != 0 && sext != -1) { |
| 959 |
env->error_code = 0;
|
| 960 |
env->exception_index = EXCP0D_GPF; |
| 961 |
return 1; |
| 962 |
} |
| 963 |
|
| 964 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 965 |
env->a20_mask; |
| 966 |
pml4e = ldq_phys(pml4e_addr); |
| 967 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
| 968 |
error_code = 0;
|
| 969 |
goto do_fault;
|
| 970 |
} |
| 971 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
| 972 |
error_code = PG_ERROR_RSVD_MASK; |
| 973 |
goto do_fault;
|
| 974 |
} |
| 975 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
| 976 |
pml4e |= PG_ACCESSED_MASK; |
| 977 |
stl_phys_notdirty(pml4e_addr, pml4e); |
| 978 |
} |
| 979 |
ptep = pml4e ^ PG_NX_MASK; |
| 980 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
| 981 |
env->a20_mask; |
| 982 |
pdpe = ldq_phys(pdpe_addr); |
| 983 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 984 |
error_code = 0;
|
| 985 |
goto do_fault;
|
| 986 |
} |
| 987 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
| 988 |
error_code = PG_ERROR_RSVD_MASK; |
| 989 |
goto do_fault;
|
| 990 |
} |
| 991 |
ptep &= pdpe ^ PG_NX_MASK; |
| 992 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
| 993 |
pdpe |= PG_ACCESSED_MASK; |
| 994 |
stl_phys_notdirty(pdpe_addr, pdpe); |
| 995 |
} |
| 996 |
} else
|
| 997 |
#endif
|
| 998 |
{
|
| 999 |
/* XXX: load them when cr3 is loaded ? */
|
| 1000 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 1001 |
env->a20_mask; |
| 1002 |
pdpe = ldq_phys(pdpe_addr); |
| 1003 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 1004 |
error_code = 0;
|
| 1005 |
goto do_fault;
|
| 1006 |
} |
| 1007 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| 1008 |
} |
| 1009 |
|
| 1010 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
| 1011 |
env->a20_mask; |
| 1012 |
pde = ldq_phys(pde_addr); |
| 1013 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 1014 |
error_code = 0;
|
| 1015 |
goto do_fault;
|
| 1016 |
} |
| 1017 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
| 1018 |
error_code = PG_ERROR_RSVD_MASK; |
| 1019 |
goto do_fault;
|
| 1020 |
} |
| 1021 |
ptep &= pde ^ PG_NX_MASK; |
| 1022 |
if (pde & PG_PSE_MASK) {
|
| 1023 |
/* 2 MB page */
|
| 1024 |
page_size = 2048 * 1024; |
| 1025 |
ptep ^= PG_NX_MASK; |
| 1026 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 1027 |
goto do_fault_protect;
|
| 1028 |
if (is_user) {
|
| 1029 |
if (!(ptep & PG_USER_MASK))
|
| 1030 |
goto do_fault_protect;
|
| 1031 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 1032 |
goto do_fault_protect;
|
| 1033 |
} else {
|
| 1034 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 1035 |
is_write && !(ptep & PG_RW_MASK)) |
| 1036 |
goto do_fault_protect;
|
| 1037 |
} |
| 1038 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 1039 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 1040 |
pde |= PG_ACCESSED_MASK; |
| 1041 |
if (is_dirty)
|
| 1042 |
pde |= PG_DIRTY_MASK; |
| 1043 |
stl_phys_notdirty(pde_addr, pde); |
| 1044 |
} |
| 1045 |
/* align to page_size */
|
| 1046 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
| 1047 |
virt_addr = addr & ~(page_size - 1);
|
| 1048 |
} else {
|
| 1049 |
/* 4 KB page */
|
| 1050 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 1051 |
pde |= PG_ACCESSED_MASK; |
| 1052 |
stl_phys_notdirty(pde_addr, pde); |
| 1053 |
} |
| 1054 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
| 1055 |
env->a20_mask; |
| 1056 |
pte = ldq_phys(pte_addr); |
| 1057 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 1058 |
error_code = 0;
|
| 1059 |
goto do_fault;
|
| 1060 |
} |
| 1061 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
| 1062 |
error_code = PG_ERROR_RSVD_MASK; |
| 1063 |
goto do_fault;
|
| 1064 |
} |
| 1065 |
/* combine pde and pte nx, user and rw protections */
|
| 1066 |
ptep &= pte ^ PG_NX_MASK; |
| 1067 |
ptep ^= PG_NX_MASK; |
| 1068 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 1069 |
goto do_fault_protect;
|
| 1070 |
if (is_user) {
|
| 1071 |
if (!(ptep & PG_USER_MASK))
|
| 1072 |
goto do_fault_protect;
|
| 1073 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 1074 |
goto do_fault_protect;
|
| 1075 |
} else {
|
| 1076 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 1077 |
is_write && !(ptep & PG_RW_MASK)) |
| 1078 |
goto do_fault_protect;
|
| 1079 |
} |
| 1080 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 1081 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 1082 |
pte |= PG_ACCESSED_MASK; |
| 1083 |
if (is_dirty)
|
| 1084 |
pte |= PG_DIRTY_MASK; |
| 1085 |
stl_phys_notdirty(pte_addr, pte); |
| 1086 |
} |
| 1087 |
page_size = 4096;
|
| 1088 |
virt_addr = addr & ~0xfff;
|
| 1089 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
| 1090 |
} |
| 1091 |
} else {
|
| 1092 |
uint32_t pde; |
| 1093 |
|
| 1094 |
/* page directory entry */
|
| 1095 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
| 1096 |
env->a20_mask; |
| 1097 |
pde = ldl_phys(pde_addr); |
| 1098 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 1099 |
error_code = 0;
|
| 1100 |
goto do_fault;
|
| 1101 |
} |
| 1102 |
/* if PSE bit is set, then we use a 4MB page */
|
| 1103 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 1104 |
page_size = 4096 * 1024; |
| 1105 |
if (is_user) {
|
| 1106 |
if (!(pde & PG_USER_MASK))
|
| 1107 |
goto do_fault_protect;
|
| 1108 |
if (is_write && !(pde & PG_RW_MASK))
|
| 1109 |
goto do_fault_protect;
|
| 1110 |
} else {
|
| 1111 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 1112 |
is_write && !(pde & PG_RW_MASK)) |
| 1113 |
goto do_fault_protect;
|
| 1114 |
} |
| 1115 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 1116 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 1117 |
pde |= PG_ACCESSED_MASK; |
| 1118 |
if (is_dirty)
|
| 1119 |
pde |= PG_DIRTY_MASK; |
| 1120 |
stl_phys_notdirty(pde_addr, pde); |
| 1121 |
} |
| 1122 |
|
| 1123 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 1124 |
ptep = pte; |
| 1125 |
virt_addr = addr & ~(page_size - 1);
|
| 1126 |
} else {
|
| 1127 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 1128 |
pde |= PG_ACCESSED_MASK; |
| 1129 |
stl_phys_notdirty(pde_addr, pde); |
| 1130 |
} |
| 1131 |
|
| 1132 |
/* page directory entry */
|
| 1133 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
| 1134 |
env->a20_mask; |
| 1135 |
pte = ldl_phys(pte_addr); |
| 1136 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 1137 |
error_code = 0;
|
| 1138 |
goto do_fault;
|
| 1139 |
} |
| 1140 |
/* combine pde and pte user and rw protections */
|
| 1141 |
ptep = pte & pde; |
| 1142 |
if (is_user) {
|
| 1143 |
if (!(ptep & PG_USER_MASK))
|
| 1144 |
goto do_fault_protect;
|
| 1145 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 1146 |
goto do_fault_protect;
|
| 1147 |
} else {
|
| 1148 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 1149 |
is_write && !(ptep & PG_RW_MASK)) |
| 1150 |
goto do_fault_protect;
|
| 1151 |
} |
| 1152 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 1153 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 1154 |
pte |= PG_ACCESSED_MASK; |
| 1155 |
if (is_dirty)
|
| 1156 |
pte |= PG_DIRTY_MASK; |
| 1157 |
stl_phys_notdirty(pte_addr, pte); |
| 1158 |
} |
| 1159 |
page_size = 4096;
|
| 1160 |
virt_addr = addr & ~0xfff;
|
| 1161 |
} |
| 1162 |
} |
| 1163 |
/* the page can be put in the TLB */
|
| 1164 |
prot = PAGE_READ; |
| 1165 |
if (!(ptep & PG_NX_MASK))
|
| 1166 |
prot |= PAGE_EXEC; |
| 1167 |
if (pte & PG_DIRTY_MASK) {
|
| 1168 |
/* only set write access if already dirty... otherwise wait
|
| 1169 |
for dirty access */
|
| 1170 |
if (is_user) {
|
| 1171 |
if (ptep & PG_RW_MASK)
|
| 1172 |
prot |= PAGE_WRITE; |
| 1173 |
} else {
|
| 1174 |
if (!(env->cr[0] & CR0_WP_MASK) || |
| 1175 |
(ptep & PG_RW_MASK)) |
| 1176 |
prot |= PAGE_WRITE; |
| 1177 |
} |
| 1178 |
} |
| 1179 |
do_mapping:
|
| 1180 |
pte = pte & env->a20_mask; |
| 1181 |
|
| 1182 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
| 1183 |
avoid filling it too fast */
|
| 1184 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 1185 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 1186 |
vaddr = virt_addr + page_offset; |
| 1187 |
|
| 1188 |
ret = tlb_set_page_exec(env, vaddr, paddr, prot, mmu_idx, is_softmmu); |
| 1189 |
return ret;
|
| 1190 |
do_fault_protect:
|
| 1191 |
error_code = PG_ERROR_P_MASK; |
| 1192 |
do_fault:
|
| 1193 |
error_code |= (is_write << PG_ERROR_W_BIT); |
| 1194 |
if (is_user)
|
| 1195 |
error_code |= PG_ERROR_U_MASK; |
| 1196 |
if (is_write1 == 2 && |
| 1197 |
(env->efer & MSR_EFER_NXE) && |
| 1198 |
(env->cr[4] & CR4_PAE_MASK))
|
| 1199 |
error_code |= PG_ERROR_I_D_MASK; |
| 1200 |
if (env->intercept_exceptions & (1 << EXCP0E_PAGE)) { |
| 1201 |
/* cr2 is not modified in case of exceptions */
|
| 1202 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2),
|
| 1203 |
addr); |
| 1204 |
} else {
|
| 1205 |
env->cr[2] = addr;
|
| 1206 |
} |
| 1207 |
env->error_code = error_code; |
| 1208 |
env->exception_index = EXCP0E_PAGE; |
| 1209 |
return 1; |
| 1210 |
} |
| 1211 |
|
| 1212 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 1213 |
{
|
| 1214 |
target_ulong pde_addr, pte_addr; |
| 1215 |
uint64_t pte; |
| 1216 |
target_phys_addr_t paddr; |
| 1217 |
uint32_t page_offset; |
| 1218 |
int page_size;
|
| 1219 |
|
| 1220 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 1221 |
target_ulong pdpe_addr; |
| 1222 |
uint64_t pde, pdpe; |
| 1223 |
|
| 1224 |
#ifdef TARGET_X86_64
|
| 1225 |
if (env->hflags & HF_LMA_MASK) {
|
| 1226 |
uint64_t pml4e_addr, pml4e; |
| 1227 |
int32_t sext; |
| 1228 |
|
| 1229 |
/* test virtual address sign extension */
|
| 1230 |
sext = (int64_t)addr >> 47;
|
| 1231 |
if (sext != 0 && sext != -1) |
| 1232 |
return -1; |
| 1233 |
|
| 1234 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 1235 |
env->a20_mask; |
| 1236 |
pml4e = ldq_phys(pml4e_addr); |
| 1237 |
if (!(pml4e & PG_PRESENT_MASK))
|
| 1238 |
return -1; |
| 1239 |
|
| 1240 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
| 1241 |
env->a20_mask; |
| 1242 |
pdpe = ldq_phys(pdpe_addr); |
| 1243 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 1244 |
return -1; |
| 1245 |
} else
|
| 1246 |
#endif
|
| 1247 |
{
|
| 1248 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 1249 |
env->a20_mask; |
| 1250 |
pdpe = ldq_phys(pdpe_addr); |
| 1251 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 1252 |
return -1; |
| 1253 |
} |
| 1254 |
|
| 1255 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
| 1256 |
env->a20_mask; |
| 1257 |
pde = ldq_phys(pde_addr); |
| 1258 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 1259 |
return -1; |
| 1260 |
} |
| 1261 |
if (pde & PG_PSE_MASK) {
|
| 1262 |
/* 2 MB page */
|
| 1263 |
page_size = 2048 * 1024; |
| 1264 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 1265 |
} else {
|
| 1266 |
/* 4 KB page */
|
| 1267 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
| 1268 |
env->a20_mask; |
| 1269 |
page_size = 4096;
|
| 1270 |
pte = ldq_phys(pte_addr); |
| 1271 |
} |
| 1272 |
if (!(pte & PG_PRESENT_MASK))
|
| 1273 |
return -1; |
| 1274 |
} else {
|
| 1275 |
uint32_t pde; |
| 1276 |
|
| 1277 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 1278 |
pte = addr; |
| 1279 |
page_size = 4096;
|
| 1280 |
} else {
|
| 1281 |
/* page directory entry */
|
| 1282 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
| 1283 |
pde = ldl_phys(pde_addr); |
| 1284 |
if (!(pde & PG_PRESENT_MASK))
|
| 1285 |
return -1; |
| 1286 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 1287 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
| 1288 |
page_size = 4096 * 1024; |
| 1289 |
} else {
|
| 1290 |
/* page directory entry */
|
| 1291 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
| 1292 |
pte = ldl_phys(pte_addr); |
| 1293 |
if (!(pte & PG_PRESENT_MASK))
|
| 1294 |
return -1; |
| 1295 |
page_size = 4096;
|
| 1296 |
} |
| 1297 |
} |
| 1298 |
pte = pte & env->a20_mask; |
| 1299 |
} |
| 1300 |
|
| 1301 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 1302 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 1303 |
return paddr;
|
| 1304 |
} |
| 1305 |
|
| 1306 |
void hw_breakpoint_insert(CPUState *env, int index) |
| 1307 |
{
|
| 1308 |
int type, err = 0; |
| 1309 |
|
| 1310 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 1311 |
case 0: |
| 1312 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
| 1313 |
err = cpu_breakpoint_insert(env, env->dr[index], BP_CPU, |
| 1314 |
&env->cpu_breakpoint[index]); |
| 1315 |
break;
|
| 1316 |
case 1: |
| 1317 |
type = BP_CPU | BP_MEM_WRITE; |
| 1318 |
goto insert_wp;
|
| 1319 |
case 2: |
| 1320 |
/* No support for I/O watchpoints yet */
|
| 1321 |
break;
|
| 1322 |
case 3: |
| 1323 |
type = BP_CPU | BP_MEM_ACCESS; |
| 1324 |
insert_wp:
|
| 1325 |
err = cpu_watchpoint_insert(env, env->dr[index], |
| 1326 |
hw_breakpoint_len(env->dr[7], index),
|
| 1327 |
type, &env->cpu_watchpoint[index]); |
| 1328 |
break;
|
| 1329 |
} |
| 1330 |
if (err)
|
| 1331 |
env->cpu_breakpoint[index] = NULL;
|
| 1332 |
} |
| 1333 |
|
| 1334 |
void hw_breakpoint_remove(CPUState *env, int index) |
| 1335 |
{
|
| 1336 |
if (!env->cpu_breakpoint[index])
|
| 1337 |
return;
|
| 1338 |
switch (hw_breakpoint_type(env->dr[7], index)) { |
| 1339 |
case 0: |
| 1340 |
if (hw_breakpoint_enabled(env->dr[7], index)) |
| 1341 |
cpu_breakpoint_remove_by_ref(env, env->cpu_breakpoint[index]); |
| 1342 |
break;
|
| 1343 |
case 1: |
| 1344 |
case 3: |
| 1345 |
cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[index]); |
| 1346 |
break;
|
| 1347 |
case 2: |
| 1348 |
/* No support for I/O watchpoints yet */
|
| 1349 |
break;
|
| 1350 |
} |
| 1351 |
} |
| 1352 |
|
| 1353 |
int check_hw_breakpoints(CPUState *env, int force_dr6_update) |
| 1354 |
{
|
| 1355 |
target_ulong dr6; |
| 1356 |
int reg, type;
|
| 1357 |
int hit_enabled = 0; |
| 1358 |
|
| 1359 |
dr6 = env->dr[6] & ~0xf; |
| 1360 |
for (reg = 0; reg < 4; reg++) { |
| 1361 |
type = hw_breakpoint_type(env->dr[7], reg);
|
| 1362 |
if ((type == 0 && env->dr[reg] == env->eip) || |
| 1363 |
((type & 1) && env->cpu_watchpoint[reg] &&
|
| 1364 |
(env->cpu_watchpoint[reg]->flags & BP_WATCHPOINT_HIT))) {
|
| 1365 |
dr6 |= 1 << reg;
|
| 1366 |
if (hw_breakpoint_enabled(env->dr[7], reg)) |
| 1367 |
hit_enabled = 1;
|
| 1368 |
} |
| 1369 |
} |
| 1370 |
if (hit_enabled || force_dr6_update)
|
| 1371 |
env->dr[6] = dr6;
|
| 1372 |
return hit_enabled;
|
| 1373 |
} |
| 1374 |
|
| 1375 |
static CPUDebugExcpHandler *prev_debug_excp_handler;
|
| 1376 |
|
| 1377 |
void raise_exception(int exception_index); |
| 1378 |
|
| 1379 |
static void breakpoint_handler(CPUState *env) |
| 1380 |
{
|
| 1381 |
CPUBreakpoint *bp; |
| 1382 |
|
| 1383 |
if (env->watchpoint_hit) {
|
| 1384 |
if (env->watchpoint_hit->flags & BP_CPU) {
|
| 1385 |
env->watchpoint_hit = NULL;
|
| 1386 |
if (check_hw_breakpoints(env, 0)) |
| 1387 |
raise_exception(EXCP01_DB); |
| 1388 |
else
|
| 1389 |
cpu_resume_from_signal(env, NULL);
|
| 1390 |
} |
| 1391 |
} else {
|
| 1392 |
TAILQ_FOREACH(bp, &env->breakpoints, entry) |
| 1393 |
if (bp->pc == env->eip) {
|
| 1394 |
if (bp->flags & BP_CPU) {
|
| 1395 |
check_hw_breakpoints(env, 1);
|
| 1396 |
raise_exception(EXCP01_DB); |
| 1397 |
} |
| 1398 |
break;
|
| 1399 |
} |
| 1400 |
} |
| 1401 |
if (prev_debug_excp_handler)
|
| 1402 |
prev_debug_excp_handler(env); |
| 1403 |
} |
| 1404 |
#endif /* !CONFIG_USER_ONLY */ |
| 1405 |
|
| 1406 |
static void host_cpuid(uint32_t function, uint32_t *eax, uint32_t *ebx, |
| 1407 |
uint32_t *ecx, uint32_t *edx) |
| 1408 |
{
|
| 1409 |
#if defined(CONFIG_KVM)
|
| 1410 |
uint32_t vec[4];
|
| 1411 |
|
| 1412 |
#ifdef __x86_64__
|
| 1413 |
asm volatile("cpuid" |
| 1414 |
: "=a"(vec[0]), "=b"(vec[1]), |
| 1415 |
"=c"(vec[2]), "=d"(vec[3]) |
| 1416 |
: "0"(function) : "cc"); |
| 1417 |
#else
|
| 1418 |
asm volatile("pusha \n\t" |
| 1419 |
"cpuid \n\t"
|
| 1420 |
"mov %%eax, 0(%1) \n\t"
|
| 1421 |
"mov %%ebx, 4(%1) \n\t"
|
| 1422 |
"mov %%ecx, 8(%1) \n\t"
|
| 1423 |
"mov %%edx, 12(%1) \n\t"
|
| 1424 |
"popa"
|
| 1425 |
: : "a"(function), "S"(vec) |
| 1426 |
: "memory", "cc"); |
| 1427 |
#endif
|
| 1428 |
|
| 1429 |
if (eax)
|
| 1430 |
*eax = vec[0];
|
| 1431 |
if (ebx)
|
| 1432 |
*ebx = vec[1];
|
| 1433 |
if (ecx)
|
| 1434 |
*ecx = vec[2];
|
| 1435 |
if (edx)
|
| 1436 |
*edx = vec[3];
|
| 1437 |
#endif
|
| 1438 |
} |
| 1439 |
|
| 1440 |
void cpu_x86_cpuid(CPUX86State *env, uint32_t index,
|
| 1441 |
uint32_t *eax, uint32_t *ebx, |
| 1442 |
uint32_t *ecx, uint32_t *edx) |
| 1443 |
{
|
| 1444 |
/* test if maximum index reached */
|
| 1445 |
if (index & 0x80000000) { |
| 1446 |
if (index > env->cpuid_xlevel)
|
| 1447 |
index = env->cpuid_level; |
| 1448 |
} else {
|
| 1449 |
if (index > env->cpuid_level)
|
| 1450 |
index = env->cpuid_level; |
| 1451 |
} |
| 1452 |
|
| 1453 |
switch(index) {
|
| 1454 |
case 0: |
| 1455 |
*eax = env->cpuid_level; |
| 1456 |
*ebx = env->cpuid_vendor1; |
| 1457 |
*edx = env->cpuid_vendor2; |
| 1458 |
*ecx = env->cpuid_vendor3; |
| 1459 |
|
| 1460 |
/* sysenter isn't supported on compatibility mode on AMD. and syscall
|
| 1461 |
* isn't supported in compatibility mode on Intel. so advertise the
|
| 1462 |
* actuall cpu, and say goodbye to migration between different vendors
|
| 1463 |
* is you use compatibility mode. */
|
| 1464 |
if (kvm_enabled())
|
| 1465 |
host_cpuid(0, NULL, ebx, ecx, edx); |
| 1466 |
break;
|
| 1467 |
case 1: |
| 1468 |
*eax = env->cpuid_version; |
| 1469 |
*ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */ |
| 1470 |
*ecx = env->cpuid_ext_features; |
| 1471 |
*edx = env->cpuid_features; |
| 1472 |
|
| 1473 |
/* "Hypervisor present" bit required for Microsoft SVVP */
|
| 1474 |
if (kvm_enabled())
|
| 1475 |
*ecx |= (1 << 31); |
| 1476 |
break;
|
| 1477 |
case 2: |
| 1478 |
/* cache info: needed for Pentium Pro compatibility */
|
| 1479 |
*eax = 1;
|
| 1480 |
*ebx = 0;
|
| 1481 |
*ecx = 0;
|
| 1482 |
*edx = 0x2c307d;
|
| 1483 |
break;
|
| 1484 |
case 4: |
| 1485 |
/* cache info: needed for Core compatibility */
|
| 1486 |
switch (*ecx) {
|
| 1487 |
case 0: /* L1 dcache info */ |
| 1488 |
*eax = 0x0000121;
|
| 1489 |
*ebx = 0x1c0003f;
|
| 1490 |
*ecx = 0x000003f;
|
| 1491 |
*edx = 0x0000001;
|
| 1492 |
break;
|
| 1493 |
case 1: /* L1 icache info */ |
| 1494 |
*eax = 0x0000122;
|
| 1495 |
*ebx = 0x1c0003f;
|
| 1496 |
*ecx = 0x000003f;
|
| 1497 |
*edx = 0x0000001;
|
| 1498 |
break;
|
| 1499 |
case 2: /* L2 cache info */ |
| 1500 |
*eax = 0x0000143;
|
| 1501 |
*ebx = 0x3c0003f;
|
| 1502 |
*ecx = 0x0000fff;
|
| 1503 |
*edx = 0x0000001;
|
| 1504 |
break;
|
| 1505 |
default: /* end of info */ |
| 1506 |
*eax = 0;
|
| 1507 |
*ebx = 0;
|
| 1508 |
*ecx = 0;
|
| 1509 |
*edx = 0;
|
| 1510 |
break;
|
| 1511 |
} |
| 1512 |
|
| 1513 |
break;
|
| 1514 |
case 5: |
| 1515 |
/* mwait info: needed for Core compatibility */
|
| 1516 |
*eax = 0; /* Smallest monitor-line size in bytes */ |
| 1517 |
*ebx = 0; /* Largest monitor-line size in bytes */ |
| 1518 |
*ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE; |
| 1519 |
*edx = 0;
|
| 1520 |
break;
|
| 1521 |
case 6: |
| 1522 |
/* Thermal and Power Leaf */
|
| 1523 |
*eax = 0;
|
| 1524 |
*ebx = 0;
|
| 1525 |
*ecx = 0;
|
| 1526 |
*edx = 0;
|
| 1527 |
break;
|
| 1528 |
case 9: |
| 1529 |
/* Direct Cache Access Information Leaf */
|
| 1530 |
*eax = 0; /* Bits 0-31 in DCA_CAP MSR */ |
| 1531 |
*ebx = 0;
|
| 1532 |
*ecx = 0;
|
| 1533 |
*edx = 0;
|
| 1534 |
break;
|
| 1535 |
case 0xA: |
| 1536 |
/* Architectural Performance Monitoring Leaf */
|
| 1537 |
*eax = 0;
|
| 1538 |
*ebx = 0;
|
| 1539 |
*ecx = 0;
|
| 1540 |
*edx = 0;
|
| 1541 |
break;
|
| 1542 |
case 0x80000000: |
| 1543 |
*eax = env->cpuid_xlevel; |
| 1544 |
*ebx = env->cpuid_vendor1; |
| 1545 |
*edx = env->cpuid_vendor2; |
| 1546 |
*ecx = env->cpuid_vendor3; |
| 1547 |
break;
|
| 1548 |
case 0x80000001: |
| 1549 |
*eax = env->cpuid_features; |
| 1550 |
*ebx = 0;
|
| 1551 |
*ecx = env->cpuid_ext3_features; |
| 1552 |
*edx = env->cpuid_ext2_features; |
| 1553 |
|
| 1554 |
if (kvm_enabled()) {
|
| 1555 |
uint32_t h_eax, h_edx; |
| 1556 |
|
| 1557 |
host_cpuid(0x80000001, &h_eax, NULL, NULL, &h_edx); |
| 1558 |
|
| 1559 |
/* disable CPU features that the host does not support */
|
| 1560 |
|
| 1561 |
/* long mode */
|
| 1562 |
if ((h_edx & 0x20000000) == 0 /* || !lm_capable_kernel */) |
| 1563 |
*edx &= ~0x20000000;
|
| 1564 |
/* syscall */
|
| 1565 |
if ((h_edx & 0x00000800) == 0) |
| 1566 |
*edx &= ~0x00000800;
|
| 1567 |
/* nx */
|
| 1568 |
if ((h_edx & 0x00100000) == 0) |
| 1569 |
*edx &= ~0x00100000;
|
| 1570 |
|
| 1571 |
/* disable CPU features that KVM cannot support */
|
| 1572 |
|
| 1573 |
/* svm */
|
| 1574 |
*ecx &= ~4UL;
|
| 1575 |
/* 3dnow */
|
| 1576 |
*edx &= ~0xc0000000;
|
| 1577 |
} |
| 1578 |
break;
|
| 1579 |
case 0x80000002: |
| 1580 |
case 0x80000003: |
| 1581 |
case 0x80000004: |
| 1582 |
*eax = env->cpuid_model[(index - 0x80000002) * 4 + 0]; |
| 1583 |
*ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1]; |
| 1584 |
*ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2]; |
| 1585 |
*edx = env->cpuid_model[(index - 0x80000002) * 4 + 3]; |
| 1586 |
break;
|
| 1587 |
case 0x80000005: |
| 1588 |
/* cache info (L1 cache) */
|
| 1589 |
*eax = 0x01ff01ff;
|
| 1590 |
*ebx = 0x01ff01ff;
|
| 1591 |
*ecx = 0x40020140;
|
| 1592 |
*edx = 0x40020140;
|
| 1593 |
break;
|
| 1594 |
case 0x80000006: |
| 1595 |
/* cache info (L2 cache) */
|
| 1596 |
*eax = 0;
|
| 1597 |
*ebx = 0x42004200;
|
| 1598 |
*ecx = 0x02008140;
|
| 1599 |
*edx = 0;
|
| 1600 |
break;
|
| 1601 |
case 0x80000008: |
| 1602 |
/* virtual & phys address size in low 2 bytes. */
|
| 1603 |
/* XXX: This value must match the one used in the MMU code. */
|
| 1604 |
if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
|
| 1605 |
/* 64 bit processor */
|
| 1606 |
#if defined(USE_KQEMU)
|
| 1607 |
*eax = 0x00003020; /* 48 bits virtual, 32 bits physical */ |
| 1608 |
#else
|
| 1609 |
/* XXX: The physical address space is limited to 42 bits in exec.c. */
|
| 1610 |
*eax = 0x00003028; /* 48 bits virtual, 40 bits physical */ |
| 1611 |
#endif
|
| 1612 |
} else {
|
| 1613 |
#if defined(USE_KQEMU)
|
| 1614 |
*eax = 0x00000020; /* 32 bits physical */ |
| 1615 |
#else
|
| 1616 |
if (env->cpuid_features & CPUID_PSE36)
|
| 1617 |
*eax = 0x00000024; /* 36 bits physical */ |
| 1618 |
else
|
| 1619 |
*eax = 0x00000020; /* 32 bits physical */ |
| 1620 |
#endif
|
| 1621 |
} |
| 1622 |
*ebx = 0;
|
| 1623 |
*ecx = 0;
|
| 1624 |
*edx = 0;
|
| 1625 |
break;
|
| 1626 |
case 0x8000000A: |
| 1627 |
*eax = 0x00000001; /* SVM Revision */ |
| 1628 |
*ebx = 0x00000010; /* nr of ASIDs */ |
| 1629 |
*ecx = 0;
|
| 1630 |
*edx = 0; /* optional features */ |
| 1631 |
break;
|
| 1632 |
default:
|
| 1633 |
/* reserved values: zero */
|
| 1634 |
*eax = 0;
|
| 1635 |
*ebx = 0;
|
| 1636 |
*ecx = 0;
|
| 1637 |
*edx = 0;
|
| 1638 |
break;
|
| 1639 |
} |
| 1640 |
} |
| 1641 |
|
| 1642 |
CPUX86State *cpu_x86_init(const char *cpu_model) |
| 1643 |
{
|
| 1644 |
CPUX86State *env; |
| 1645 |
static int inited; |
| 1646 |
|
| 1647 |
env = qemu_mallocz(sizeof(CPUX86State));
|
| 1648 |
cpu_exec_init(env); |
| 1649 |
env->cpu_model_str = cpu_model; |
| 1650 |
|
| 1651 |
/* init various static tables */
|
| 1652 |
if (!inited) {
|
| 1653 |
inited = 1;
|
| 1654 |
optimize_flags_init(); |
| 1655 |
#ifndef CONFIG_USER_ONLY
|
| 1656 |
prev_debug_excp_handler = |
| 1657 |
cpu_set_debug_excp_handler(breakpoint_handler); |
| 1658 |
#endif
|
| 1659 |
} |
| 1660 |
if (cpu_x86_register(env, cpu_model) < 0) { |
| 1661 |
cpu_x86_close(env); |
| 1662 |
return NULL; |
| 1663 |
} |
| 1664 |
cpu_reset(env); |
| 1665 |
#ifdef USE_KQEMU
|
| 1666 |
kqemu_init(env); |
| 1667 |
#endif
|
| 1668 |
if (kvm_enabled())
|
| 1669 |
kvm_init_vcpu(env); |
| 1670 |
return env;
|
| 1671 |
} |