root / target-i386 / helper2.c @ a049de61
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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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|
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#include "cpu.h" |
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#include "exec-all.h" |
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#include "svm.h" |
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|
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//#define DEBUG_MMU
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|
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#ifdef USE_CODE_COPY
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#include <unistd.h> |
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#include <asm/ldt.h> |
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#include <linux/unistd.h> |
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#include <linux/version.h> |
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|
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int modify_ldt(int func, void *ptr, unsigned long bytecount) |
| 41 |
{
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return syscall(__NR_modify_ldt, func, ptr, bytecount);
|
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} |
| 44 |
|
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66) |
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#define modify_ldt_ldt_s user_desc
|
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#endif
|
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#endif /* USE_CODE_COPY */ |
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|
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static struct x86_def_t *x86_cpu_def; |
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typedef struct x86_def_t x86_def_t; |
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static int cpu_x86_register (CPUX86State *env, const x86_def_t *def); |
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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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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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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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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", "mttr", "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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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_features[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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CPUX86State *cpu_x86_init(void)
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{
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CPUX86State *env; |
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static int inited; |
| 115 |
|
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env = qemu_mallocz(sizeof(CPUX86State));
|
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if (!env)
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return NULL; |
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cpu_exec_init(env); |
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|
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/* init various static tables */
|
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if (!inited) {
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inited = 1;
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optimize_flags_init(); |
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} |
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#ifdef USE_CODE_COPY
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/* testing code for code copy case */
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{
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struct modify_ldt_ldt_s ldt;
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|
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ldt.entry_number = 1;
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ldt.base_addr = (unsigned long)env; |
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ldt.limit = (sizeof(CPUState) + 0xfff) >> 12; |
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ldt.seg_32bit = 1;
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ldt.contents = MODIFY_LDT_CONTENTS_DATA; |
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ldt.read_exec_only = 0;
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ldt.limit_in_pages = 1;
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ldt.seg_not_present = 0;
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ldt.useable = 1;
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modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ |
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|
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asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7)); |
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} |
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#endif
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cpu_x86_register(env, x86_cpu_def); |
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cpu_reset(env); |
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#ifdef USE_KQEMU
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kqemu_init(env); |
| 149 |
#endif
|
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return env;
|
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} |
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|
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struct x86_def_t {
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const char *name; |
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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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}; |
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|
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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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.vendor1 = 0x68747541, /* "Auth" */ |
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.vendor2 = 0x69746e65, /* "enti" */ |
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.vendor3 = 0x444d4163, /* "cAMD" */ |
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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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.ext3_features = CPUID_EXT3_SVM, |
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.xlevel = 0x80000008,
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}, |
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#endif
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{
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.name = "qemu32",
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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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}, |
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{
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.name = "486",
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.family = 4,
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.model = 0,
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.stepping = 0,
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.features = 0x0000000B,
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.xlevel = 0,
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}, |
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{
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.name = "pentium",
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.family = 5,
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.model = 4,
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.stepping = 3,
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.features = 0x008001BF,
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.xlevel = 0,
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}, |
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{
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.name = "pentium2",
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.family = 6,
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.model = 5,
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.stepping = 2,
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.features = 0x0183F9FF,
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.xlevel = 0,
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}, |
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{
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.name = "pentium3",
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.family = 6,
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.model = 7,
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.stepping = 3,
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.features = 0x0383F9FF,
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.xlevel = 0,
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}, |
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}; |
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|
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int x86_find_cpu_by_name(const unsigned char *cpu_model) |
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{
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int ret;
|
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unsigned int i; |
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|
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char *s = strdup(cpu_model);
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char *featurestr, *name = strtok(s, ","); |
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uint32_t plus_features = 0, plus_ext_features = 0, plus_ext2_features = 0, plus_ext3_features = 0; |
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uint32_t minus_features = 0, minus_ext_features = 0, minus_ext2_features = 0, minus_ext3_features = 0; |
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int family = -1, model = -1, stepping = -1; |
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|
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ret = -1;
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x86_cpu_def = NULL;
|
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for (i = 0; i < sizeof(x86_defs) / sizeof(x86_def_t); i++) { |
| 246 |
if (strcmp(name, x86_defs[i].name) == 0) { |
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x86_cpu_def = &x86_defs[i]; |
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ret = 0;
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break;
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} |
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} |
| 252 |
if (!x86_cpu_def)
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goto error;
|
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|
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featurestr = strtok(NULL, ","); |
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|
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while (featurestr) {
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char *val;
|
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if (featurestr[0] == '+') { |
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add_flagname_to_bitmaps(featurestr + 1, &plus_features, &plus_ext_features, &plus_ext2_features, &plus_ext3_features);
|
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} else if (featurestr[0] == '-') { |
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add_flagname_to_bitmaps(featurestr + 1, &minus_features, &minus_ext_features, &minus_ext2_features, &minus_ext3_features);
|
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} else if ((val = strchr(featurestr, '='))) { |
| 264 |
*val = 0; val++;
|
| 265 |
if (!strcmp(featurestr, "family")) { |
| 266 |
char *err;
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family = strtol(val, &err, 10);
|
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if (!*val || *err || family < 0) { |
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fprintf(stderr, "bad numerical value %s\n", val);
|
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x86_cpu_def = 0;
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goto error;
|
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} |
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x86_cpu_def->family = family; |
| 274 |
} else if (!strcmp(featurestr, "model")) { |
| 275 |
char *err;
|
| 276 |
model = strtol(val, &err, 10);
|
| 277 |
if (!*val || *err || model < 0 || model > 0xf) { |
| 278 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 279 |
x86_cpu_def = 0;
|
| 280 |
goto error;
|
| 281 |
} |
| 282 |
x86_cpu_def->model = model; |
| 283 |
} else if (!strcmp(featurestr, "stepping")) { |
| 284 |
char *err;
|
| 285 |
stepping = strtol(val, &err, 10);
|
| 286 |
if (!*val || *err || stepping < 0 || stepping > 0xf) { |
| 287 |
fprintf(stderr, "bad numerical value %s\n", val);
|
| 288 |
x86_cpu_def = 0;
|
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goto error;
|
| 290 |
} |
| 291 |
x86_cpu_def->stepping = stepping; |
| 292 |
} else {
|
| 293 |
fprintf(stderr, "unregnized feature %s\n", featurestr);
|
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x86_cpu_def = 0;
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goto error;
|
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} |
| 297 |
} else {
|
| 298 |
fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
|
| 299 |
x86_cpu_def = 0;
|
| 300 |
goto error;
|
| 301 |
} |
| 302 |
featurestr = strtok(NULL, ","); |
| 303 |
} |
| 304 |
x86_cpu_def->features |= plus_features; |
| 305 |
x86_cpu_def->ext_features |= plus_ext_features; |
| 306 |
x86_cpu_def->ext2_features |= plus_ext2_features; |
| 307 |
x86_cpu_def->ext3_features |= plus_ext3_features; |
| 308 |
x86_cpu_def->features &= ~minus_features; |
| 309 |
x86_cpu_def->ext_features &= ~minus_ext_features; |
| 310 |
x86_cpu_def->ext2_features &= ~minus_ext2_features; |
| 311 |
x86_cpu_def->ext3_features &= ~minus_ext3_features; |
| 312 |
|
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error:
|
| 314 |
free(s); |
| 315 |
return ret;
|
| 316 |
} |
| 317 |
|
| 318 |
void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...)) |
| 319 |
{
|
| 320 |
unsigned int i; |
| 321 |
|
| 322 |
for (i = 0; i < sizeof(x86_defs) / sizeof(x86_def_t); i++) |
| 323 |
(*cpu_fprintf)(f, "x86 %16s\n", x86_defs[i].name);
|
| 324 |
} |
| 325 |
|
| 326 |
int cpu_x86_register (CPUX86State *env, const x86_def_t *def) |
| 327 |
{
|
| 328 |
if (def->vendor1) {
|
| 329 |
env->cpuid_vendor1 = def->vendor1; |
| 330 |
env->cpuid_vendor2 = def->vendor2; |
| 331 |
env->cpuid_vendor3 = def->vendor3; |
| 332 |
} else {
|
| 333 |
env->cpuid_vendor1 = 0x756e6547; /* "Genu" */ |
| 334 |
env->cpuid_vendor2 = 0x49656e69; /* "ineI" */ |
| 335 |
env->cpuid_vendor3 = 0x6c65746e; /* "ntel" */ |
| 336 |
} |
| 337 |
env->cpuid_level = 2;
|
| 338 |
env->cpuid_version = (def->family << 8) | (def->model << 4) | def->stepping; |
| 339 |
env->cpuid_features = def->features; |
| 340 |
env->pat = 0x0007040600070406ULL;
|
| 341 |
env->cpuid_ext_features = def->ext_features; |
| 342 |
env->cpuid_ext2_features = def->ext2_features; |
| 343 |
env->cpuid_xlevel = def->xlevel; |
| 344 |
env->cpuid_ext3_features = def->ext3_features; |
| 345 |
{
|
| 346 |
const char *model_id = "QEMU Virtual CPU version " QEMU_VERSION; |
| 347 |
int c, len, i;
|
| 348 |
len = strlen(model_id); |
| 349 |
for(i = 0; i < 48; i++) { |
| 350 |
if (i >= len)
|
| 351 |
c = '\0';
|
| 352 |
else
|
| 353 |
c = model_id[i]; |
| 354 |
env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); |
| 355 |
} |
| 356 |
} |
| 357 |
return 0; |
| 358 |
} |
| 359 |
|
| 360 |
/* NOTE: must be called outside the CPU execute loop */
|
| 361 |
void cpu_reset(CPUX86State *env)
|
| 362 |
{
|
| 363 |
int i;
|
| 364 |
|
| 365 |
memset(env, 0, offsetof(CPUX86State, breakpoints));
|
| 366 |
|
| 367 |
tlb_flush(env, 1);
|
| 368 |
|
| 369 |
env->old_exception = -1;
|
| 370 |
|
| 371 |
/* init to reset state */
|
| 372 |
|
| 373 |
#ifdef CONFIG_SOFTMMU
|
| 374 |
env->hflags |= HF_SOFTMMU_MASK; |
| 375 |
#endif
|
| 376 |
env->hflags |= HF_GIF_MASK; |
| 377 |
|
| 378 |
cpu_x86_update_cr0(env, 0x60000010);
|
| 379 |
env->a20_mask = 0xffffffff;
|
| 380 |
env->smbase = 0x30000;
|
| 381 |
|
| 382 |
env->idt.limit = 0xffff;
|
| 383 |
env->gdt.limit = 0xffff;
|
| 384 |
env->ldt.limit = 0xffff;
|
| 385 |
env->ldt.flags = DESC_P_MASK; |
| 386 |
env->tr.limit = 0xffff;
|
| 387 |
env->tr.flags = DESC_P_MASK; |
| 388 |
|
| 389 |
cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, 0); |
| 390 |
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, 0); |
| 391 |
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, 0); |
| 392 |
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, 0); |
| 393 |
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, 0); |
| 394 |
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, 0); |
| 395 |
|
| 396 |
env->eip = 0xfff0;
|
| 397 |
env->regs[R_EDX] = env->cpuid_version; |
| 398 |
|
| 399 |
env->eflags = 0x2;
|
| 400 |
|
| 401 |
/* FPU init */
|
| 402 |
for(i = 0;i < 8; i++) |
| 403 |
env->fptags[i] = 1;
|
| 404 |
env->fpuc = 0x37f;
|
| 405 |
|
| 406 |
env->mxcsr = 0x1f80;
|
| 407 |
} |
| 408 |
|
| 409 |
void cpu_x86_close(CPUX86State *env)
|
| 410 |
{
|
| 411 |
free(env); |
| 412 |
} |
| 413 |
|
| 414 |
/***********************************************************/
|
| 415 |
/* x86 debug */
|
| 416 |
|
| 417 |
static const char *cc_op_str[] = { |
| 418 |
"DYNAMIC",
|
| 419 |
"EFLAGS",
|
| 420 |
|
| 421 |
"MULB",
|
| 422 |
"MULW",
|
| 423 |
"MULL",
|
| 424 |
"MULQ",
|
| 425 |
|
| 426 |
"ADDB",
|
| 427 |
"ADDW",
|
| 428 |
"ADDL",
|
| 429 |
"ADDQ",
|
| 430 |
|
| 431 |
"ADCB",
|
| 432 |
"ADCW",
|
| 433 |
"ADCL",
|
| 434 |
"ADCQ",
|
| 435 |
|
| 436 |
"SUBB",
|
| 437 |
"SUBW",
|
| 438 |
"SUBL",
|
| 439 |
"SUBQ",
|
| 440 |
|
| 441 |
"SBBB",
|
| 442 |
"SBBW",
|
| 443 |
"SBBL",
|
| 444 |
"SBBQ",
|
| 445 |
|
| 446 |
"LOGICB",
|
| 447 |
"LOGICW",
|
| 448 |
"LOGICL",
|
| 449 |
"LOGICQ",
|
| 450 |
|
| 451 |
"INCB",
|
| 452 |
"INCW",
|
| 453 |
"INCL",
|
| 454 |
"INCQ",
|
| 455 |
|
| 456 |
"DECB",
|
| 457 |
"DECW",
|
| 458 |
"DECL",
|
| 459 |
"DECQ",
|
| 460 |
|
| 461 |
"SHLB",
|
| 462 |
"SHLW",
|
| 463 |
"SHLL",
|
| 464 |
"SHLQ",
|
| 465 |
|
| 466 |
"SARB",
|
| 467 |
"SARW",
|
| 468 |
"SARL",
|
| 469 |
"SARQ",
|
| 470 |
}; |
| 471 |
|
| 472 |
void cpu_dump_state(CPUState *env, FILE *f,
|
| 473 |
int (*cpu_fprintf)(FILE *f, const char *fmt, ...), |
| 474 |
int flags)
|
| 475 |
{
|
| 476 |
int eflags, i, nb;
|
| 477 |
char cc_op_name[32]; |
| 478 |
static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; |
| 479 |
|
| 480 |
eflags = env->eflags; |
| 481 |
#ifdef TARGET_X86_64
|
| 482 |
if (env->hflags & HF_CS64_MASK) {
|
| 483 |
cpu_fprintf(f, |
| 484 |
"RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" |
| 485 |
"RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" |
| 486 |
"R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" |
| 487 |
"R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" |
| 488 |
"RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n", |
| 489 |
env->regs[R_EAX], |
| 490 |
env->regs[R_EBX], |
| 491 |
env->regs[R_ECX], |
| 492 |
env->regs[R_EDX], |
| 493 |
env->regs[R_ESI], |
| 494 |
env->regs[R_EDI], |
| 495 |
env->regs[R_EBP], |
| 496 |
env->regs[R_ESP], |
| 497 |
env->regs[8],
|
| 498 |
env->regs[9],
|
| 499 |
env->regs[10],
|
| 500 |
env->regs[11],
|
| 501 |
env->regs[12],
|
| 502 |
env->regs[13],
|
| 503 |
env->regs[14],
|
| 504 |
env->regs[15],
|
| 505 |
env->eip, eflags, |
| 506 |
eflags & DF_MASK ? 'D' : '-', |
| 507 |
eflags & CC_O ? 'O' : '-', |
| 508 |
eflags & CC_S ? 'S' : '-', |
| 509 |
eflags & CC_Z ? 'Z' : '-', |
| 510 |
eflags & CC_A ? 'A' : '-', |
| 511 |
eflags & CC_P ? 'P' : '-', |
| 512 |
eflags & CC_C ? 'C' : '-', |
| 513 |
env->hflags & HF_CPL_MASK, |
| 514 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 515 |
(env->a20_mask >> 20) & 1, |
| 516 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 517 |
(env->hflags >> HF_HALTED_SHIFT) & 1);
|
| 518 |
} else
|
| 519 |
#endif
|
| 520 |
{
|
| 521 |
cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n"
|
| 522 |
"ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n"
|
| 523 |
"EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d SMM=%d HLT=%d\n",
|
| 524 |
(uint32_t)env->regs[R_EAX], |
| 525 |
(uint32_t)env->regs[R_EBX], |
| 526 |
(uint32_t)env->regs[R_ECX], |
| 527 |
(uint32_t)env->regs[R_EDX], |
| 528 |
(uint32_t)env->regs[R_ESI], |
| 529 |
(uint32_t)env->regs[R_EDI], |
| 530 |
(uint32_t)env->regs[R_EBP], |
| 531 |
(uint32_t)env->regs[R_ESP], |
| 532 |
(uint32_t)env->eip, eflags, |
| 533 |
eflags & DF_MASK ? 'D' : '-', |
| 534 |
eflags & CC_O ? 'O' : '-', |
| 535 |
eflags & CC_S ? 'S' : '-', |
| 536 |
eflags & CC_Z ? 'Z' : '-', |
| 537 |
eflags & CC_A ? 'A' : '-', |
| 538 |
eflags & CC_P ? 'P' : '-', |
| 539 |
eflags & CC_C ? 'C' : '-', |
| 540 |
env->hflags & HF_CPL_MASK, |
| 541 |
(env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1,
|
| 542 |
(env->a20_mask >> 20) & 1, |
| 543 |
(env->hflags >> HF_SMM_SHIFT) & 1,
|
| 544 |
(env->hflags >> HF_HALTED_SHIFT) & 1);
|
| 545 |
} |
| 546 |
|
| 547 |
#ifdef TARGET_X86_64
|
| 548 |
if (env->hflags & HF_LMA_MASK) {
|
| 549 |
for(i = 0; i < 6; i++) { |
| 550 |
SegmentCache *sc = &env->segs[i]; |
| 551 |
cpu_fprintf(f, "%s =%04x %016" PRIx64 " %08x %08x\n", |
| 552 |
seg_name[i], |
| 553 |
sc->selector, |
| 554 |
sc->base, |
| 555 |
sc->limit, |
| 556 |
sc->flags); |
| 557 |
} |
| 558 |
cpu_fprintf(f, "LDT=%04x %016" PRIx64 " %08x %08x\n", |
| 559 |
env->ldt.selector, |
| 560 |
env->ldt.base, |
| 561 |
env->ldt.limit, |
| 562 |
env->ldt.flags); |
| 563 |
cpu_fprintf(f, "TR =%04x %016" PRIx64 " %08x %08x\n", |
| 564 |
env->tr.selector, |
| 565 |
env->tr.base, |
| 566 |
env->tr.limit, |
| 567 |
env->tr.flags); |
| 568 |
cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", |
| 569 |
env->gdt.base, env->gdt.limit); |
| 570 |
cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", |
| 571 |
env->idt.base, env->idt.limit); |
| 572 |
cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", |
| 573 |
(uint32_t)env->cr[0],
|
| 574 |
env->cr[2],
|
| 575 |
env->cr[3],
|
| 576 |
(uint32_t)env->cr[4]);
|
| 577 |
} else
|
| 578 |
#endif
|
| 579 |
{
|
| 580 |
for(i = 0; i < 6; i++) { |
| 581 |
SegmentCache *sc = &env->segs[i]; |
| 582 |
cpu_fprintf(f, "%s =%04x %08x %08x %08x\n",
|
| 583 |
seg_name[i], |
| 584 |
sc->selector, |
| 585 |
(uint32_t)sc->base, |
| 586 |
sc->limit, |
| 587 |
sc->flags); |
| 588 |
} |
| 589 |
cpu_fprintf(f, "LDT=%04x %08x %08x %08x\n",
|
| 590 |
env->ldt.selector, |
| 591 |
(uint32_t)env->ldt.base, |
| 592 |
env->ldt.limit, |
| 593 |
env->ldt.flags); |
| 594 |
cpu_fprintf(f, "TR =%04x %08x %08x %08x\n",
|
| 595 |
env->tr.selector, |
| 596 |
(uint32_t)env->tr.base, |
| 597 |
env->tr.limit, |
| 598 |
env->tr.flags); |
| 599 |
cpu_fprintf(f, "GDT= %08x %08x\n",
|
| 600 |
(uint32_t)env->gdt.base, env->gdt.limit); |
| 601 |
cpu_fprintf(f, "IDT= %08x %08x\n",
|
| 602 |
(uint32_t)env->idt.base, env->idt.limit); |
| 603 |
cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n",
|
| 604 |
(uint32_t)env->cr[0],
|
| 605 |
(uint32_t)env->cr[2],
|
| 606 |
(uint32_t)env->cr[3],
|
| 607 |
(uint32_t)env->cr[4]);
|
| 608 |
} |
| 609 |
if (flags & X86_DUMP_CCOP) {
|
| 610 |
if ((unsigned)env->cc_op < CC_OP_NB) |
| 611 |
snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); |
| 612 |
else
|
| 613 |
snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); |
| 614 |
#ifdef TARGET_X86_64
|
| 615 |
if (env->hflags & HF_CS64_MASK) {
|
| 616 |
cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", |
| 617 |
env->cc_src, env->cc_dst, |
| 618 |
cc_op_name); |
| 619 |
} else
|
| 620 |
#endif
|
| 621 |
{
|
| 622 |
cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n",
|
| 623 |
(uint32_t)env->cc_src, (uint32_t)env->cc_dst, |
| 624 |
cc_op_name); |
| 625 |
} |
| 626 |
} |
| 627 |
if (flags & X86_DUMP_FPU) {
|
| 628 |
int fptag;
|
| 629 |
fptag = 0;
|
| 630 |
for(i = 0; i < 8; i++) { |
| 631 |
fptag |= ((!env->fptags[i]) << i); |
| 632 |
} |
| 633 |
cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n",
|
| 634 |
env->fpuc, |
| 635 |
(env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, |
| 636 |
env->fpstt, |
| 637 |
fptag, |
| 638 |
env->mxcsr); |
| 639 |
for(i=0;i<8;i++) { |
| 640 |
#if defined(USE_X86LDOUBLE)
|
| 641 |
union {
|
| 642 |
long double d; |
| 643 |
struct {
|
| 644 |
uint64_t lower; |
| 645 |
uint16_t upper; |
| 646 |
} l; |
| 647 |
} tmp; |
| 648 |
tmp.d = env->fpregs[i].d; |
| 649 |
cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", |
| 650 |
i, tmp.l.lower, tmp.l.upper); |
| 651 |
#else
|
| 652 |
cpu_fprintf(f, "FPR%d=%016" PRIx64,
|
| 653 |
i, env->fpregs[i].mmx.q); |
| 654 |
#endif
|
| 655 |
if ((i & 1) == 1) |
| 656 |
cpu_fprintf(f, "\n");
|
| 657 |
else
|
| 658 |
cpu_fprintf(f, " ");
|
| 659 |
} |
| 660 |
if (env->hflags & HF_CS64_MASK)
|
| 661 |
nb = 16;
|
| 662 |
else
|
| 663 |
nb = 8;
|
| 664 |
for(i=0;i<nb;i++) { |
| 665 |
cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x",
|
| 666 |
i, |
| 667 |
env->xmm_regs[i].XMM_L(3),
|
| 668 |
env->xmm_regs[i].XMM_L(2),
|
| 669 |
env->xmm_regs[i].XMM_L(1),
|
| 670 |
env->xmm_regs[i].XMM_L(0));
|
| 671 |
if ((i & 1) == 1) |
| 672 |
cpu_fprintf(f, "\n");
|
| 673 |
else
|
| 674 |
cpu_fprintf(f, " ");
|
| 675 |
} |
| 676 |
} |
| 677 |
} |
| 678 |
|
| 679 |
/***********************************************************/
|
| 680 |
/* x86 mmu */
|
| 681 |
/* XXX: add PGE support */
|
| 682 |
|
| 683 |
void cpu_x86_set_a20(CPUX86State *env, int a20_state) |
| 684 |
{
|
| 685 |
a20_state = (a20_state != 0);
|
| 686 |
if (a20_state != ((env->a20_mask >> 20) & 1)) { |
| 687 |
#if defined(DEBUG_MMU)
|
| 688 |
printf("A20 update: a20=%d\n", a20_state);
|
| 689 |
#endif
|
| 690 |
/* if the cpu is currently executing code, we must unlink it and
|
| 691 |
all the potentially executing TB */
|
| 692 |
cpu_interrupt(env, CPU_INTERRUPT_EXITTB); |
| 693 |
|
| 694 |
/* when a20 is changed, all the MMU mappings are invalid, so
|
| 695 |
we must flush everything */
|
| 696 |
tlb_flush(env, 1);
|
| 697 |
env->a20_mask = 0xffefffff | (a20_state << 20); |
| 698 |
} |
| 699 |
} |
| 700 |
|
| 701 |
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0)
|
| 702 |
{
|
| 703 |
int pe_state;
|
| 704 |
|
| 705 |
#if defined(DEBUG_MMU)
|
| 706 |
printf("CR0 update: CR0=0x%08x\n", new_cr0);
|
| 707 |
#endif
|
| 708 |
if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) !=
|
| 709 |
(env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) {
|
| 710 |
tlb_flush(env, 1);
|
| 711 |
} |
| 712 |
|
| 713 |
#ifdef TARGET_X86_64
|
| 714 |
if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && |
| 715 |
(env->efer & MSR_EFER_LME)) {
|
| 716 |
/* enter in long mode */
|
| 717 |
/* XXX: generate an exception */
|
| 718 |
if (!(env->cr[4] & CR4_PAE_MASK)) |
| 719 |
return;
|
| 720 |
env->efer |= MSR_EFER_LMA; |
| 721 |
env->hflags |= HF_LMA_MASK; |
| 722 |
} else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && |
| 723 |
(env->efer & MSR_EFER_LMA)) {
|
| 724 |
/* exit long mode */
|
| 725 |
env->efer &= ~MSR_EFER_LMA; |
| 726 |
env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); |
| 727 |
env->eip &= 0xffffffff;
|
| 728 |
} |
| 729 |
#endif
|
| 730 |
env->cr[0] = new_cr0 | CR0_ET_MASK;
|
| 731 |
|
| 732 |
/* update PE flag in hidden flags */
|
| 733 |
pe_state = (env->cr[0] & CR0_PE_MASK);
|
| 734 |
env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); |
| 735 |
/* ensure that ADDSEG is always set in real mode */
|
| 736 |
env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT);
|
| 737 |
/* update FPU flags */
|
| 738 |
env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | |
| 739 |
((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK));
|
| 740 |
} |
| 741 |
|
| 742 |
/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in
|
| 743 |
the PDPT */
|
| 744 |
void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3)
|
| 745 |
{
|
| 746 |
env->cr[3] = new_cr3;
|
| 747 |
if (env->cr[0] & CR0_PG_MASK) { |
| 748 |
#if defined(DEBUG_MMU)
|
| 749 |
printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); |
| 750 |
#endif
|
| 751 |
tlb_flush(env, 0);
|
| 752 |
} |
| 753 |
} |
| 754 |
|
| 755 |
void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4)
|
| 756 |
{
|
| 757 |
#if defined(DEBUG_MMU)
|
| 758 |
printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); |
| 759 |
#endif
|
| 760 |
if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) !=
|
| 761 |
(env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) {
|
| 762 |
tlb_flush(env, 1);
|
| 763 |
} |
| 764 |
/* SSE handling */
|
| 765 |
if (!(env->cpuid_features & CPUID_SSE))
|
| 766 |
new_cr4 &= ~CR4_OSFXSR_MASK; |
| 767 |
if (new_cr4 & CR4_OSFXSR_MASK)
|
| 768 |
env->hflags |= HF_OSFXSR_MASK; |
| 769 |
else
|
| 770 |
env->hflags &= ~HF_OSFXSR_MASK; |
| 771 |
|
| 772 |
env->cr[4] = new_cr4;
|
| 773 |
} |
| 774 |
|
| 775 |
/* XXX: also flush 4MB pages */
|
| 776 |
void cpu_x86_flush_tlb(CPUX86State *env, target_ulong addr)
|
| 777 |
{
|
| 778 |
tlb_flush_page(env, addr); |
| 779 |
} |
| 780 |
|
| 781 |
#if defined(CONFIG_USER_ONLY)
|
| 782 |
|
| 783 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 784 |
int is_write, int mmu_idx, int is_softmmu) |
| 785 |
{
|
| 786 |
/* user mode only emulation */
|
| 787 |
is_write &= 1;
|
| 788 |
env->cr[2] = addr;
|
| 789 |
env->error_code = (is_write << PG_ERROR_W_BIT); |
| 790 |
env->error_code |= PG_ERROR_U_MASK; |
| 791 |
env->exception_index = EXCP0E_PAGE; |
| 792 |
return 1; |
| 793 |
} |
| 794 |
|
| 795 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 796 |
{
|
| 797 |
return addr;
|
| 798 |
} |
| 799 |
|
| 800 |
#else
|
| 801 |
|
| 802 |
#define PHYS_ADDR_MASK 0xfffff000 |
| 803 |
|
| 804 |
/* return value:
|
| 805 |
-1 = cannot handle fault
|
| 806 |
0 = nothing more to do
|
| 807 |
1 = generate PF fault
|
| 808 |
2 = soft MMU activation required for this block
|
| 809 |
*/
|
| 810 |
int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
|
| 811 |
int is_write1, int mmu_idx, int is_softmmu) |
| 812 |
{
|
| 813 |
uint64_t ptep, pte; |
| 814 |
uint32_t pdpe_addr, pde_addr, pte_addr; |
| 815 |
int error_code, is_dirty, prot, page_size, ret, is_write, is_user;
|
| 816 |
unsigned long paddr, page_offset; |
| 817 |
target_ulong vaddr, virt_addr; |
| 818 |
|
| 819 |
is_user = mmu_idx == MMU_USER_IDX; |
| 820 |
#if defined(DEBUG_MMU)
|
| 821 |
printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", |
| 822 |
addr, is_write1, is_user, env->eip); |
| 823 |
#endif
|
| 824 |
is_write = is_write1 & 1;
|
| 825 |
|
| 826 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 827 |
pte = addr; |
| 828 |
virt_addr = addr & TARGET_PAGE_MASK; |
| 829 |
prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; |
| 830 |
page_size = 4096;
|
| 831 |
goto do_mapping;
|
| 832 |
} |
| 833 |
|
| 834 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 835 |
uint64_t pde, pdpe; |
| 836 |
|
| 837 |
/* XXX: we only use 32 bit physical addresses */
|
| 838 |
#ifdef TARGET_X86_64
|
| 839 |
if (env->hflags & HF_LMA_MASK) {
|
| 840 |
uint32_t pml4e_addr; |
| 841 |
uint64_t pml4e; |
| 842 |
int32_t sext; |
| 843 |
|
| 844 |
/* test virtual address sign extension */
|
| 845 |
sext = (int64_t)addr >> 47;
|
| 846 |
if (sext != 0 && sext != -1) { |
| 847 |
env->error_code = 0;
|
| 848 |
env->exception_index = EXCP0D_GPF; |
| 849 |
return 1; |
| 850 |
} |
| 851 |
|
| 852 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 853 |
env->a20_mask; |
| 854 |
pml4e = ldq_phys(pml4e_addr); |
| 855 |
if (!(pml4e & PG_PRESENT_MASK)) {
|
| 856 |
error_code = 0;
|
| 857 |
goto do_fault;
|
| 858 |
} |
| 859 |
if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) {
|
| 860 |
error_code = PG_ERROR_RSVD_MASK; |
| 861 |
goto do_fault;
|
| 862 |
} |
| 863 |
if (!(pml4e & PG_ACCESSED_MASK)) {
|
| 864 |
pml4e |= PG_ACCESSED_MASK; |
| 865 |
stl_phys_notdirty(pml4e_addr, pml4e); |
| 866 |
} |
| 867 |
ptep = pml4e ^ PG_NX_MASK; |
| 868 |
pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & |
| 869 |
env->a20_mask; |
| 870 |
pdpe = ldq_phys(pdpe_addr); |
| 871 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 872 |
error_code = 0;
|
| 873 |
goto do_fault;
|
| 874 |
} |
| 875 |
if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) {
|
| 876 |
error_code = PG_ERROR_RSVD_MASK; |
| 877 |
goto do_fault;
|
| 878 |
} |
| 879 |
ptep &= pdpe ^ PG_NX_MASK; |
| 880 |
if (!(pdpe & PG_ACCESSED_MASK)) {
|
| 881 |
pdpe |= PG_ACCESSED_MASK; |
| 882 |
stl_phys_notdirty(pdpe_addr, pdpe); |
| 883 |
} |
| 884 |
} else
|
| 885 |
#endif
|
| 886 |
{
|
| 887 |
/* XXX: load them when cr3 is loaded ? */
|
| 888 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 889 |
env->a20_mask; |
| 890 |
pdpe = ldq_phys(pdpe_addr); |
| 891 |
if (!(pdpe & PG_PRESENT_MASK)) {
|
| 892 |
error_code = 0;
|
| 893 |
goto do_fault;
|
| 894 |
} |
| 895 |
ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; |
| 896 |
} |
| 897 |
|
| 898 |
pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & |
| 899 |
env->a20_mask; |
| 900 |
pde = ldq_phys(pde_addr); |
| 901 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 902 |
error_code = 0;
|
| 903 |
goto do_fault;
|
| 904 |
} |
| 905 |
if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) {
|
| 906 |
error_code = PG_ERROR_RSVD_MASK; |
| 907 |
goto do_fault;
|
| 908 |
} |
| 909 |
ptep &= pde ^ PG_NX_MASK; |
| 910 |
if (pde & PG_PSE_MASK) {
|
| 911 |
/* 2 MB page */
|
| 912 |
page_size = 2048 * 1024; |
| 913 |
ptep ^= PG_NX_MASK; |
| 914 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 915 |
goto do_fault_protect;
|
| 916 |
if (is_user) {
|
| 917 |
if (!(ptep & PG_USER_MASK))
|
| 918 |
goto do_fault_protect;
|
| 919 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 920 |
goto do_fault_protect;
|
| 921 |
} else {
|
| 922 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 923 |
is_write && !(ptep & PG_RW_MASK)) |
| 924 |
goto do_fault_protect;
|
| 925 |
} |
| 926 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 927 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 928 |
pde |= PG_ACCESSED_MASK; |
| 929 |
if (is_dirty)
|
| 930 |
pde |= PG_DIRTY_MASK; |
| 931 |
stl_phys_notdirty(pde_addr, pde); |
| 932 |
} |
| 933 |
/* align to page_size */
|
| 934 |
pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); |
| 935 |
virt_addr = addr & ~(page_size - 1);
|
| 936 |
} else {
|
| 937 |
/* 4 KB page */
|
| 938 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 939 |
pde |= PG_ACCESSED_MASK; |
| 940 |
stl_phys_notdirty(pde_addr, pde); |
| 941 |
} |
| 942 |
pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & |
| 943 |
env->a20_mask; |
| 944 |
pte = ldq_phys(pte_addr); |
| 945 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 946 |
error_code = 0;
|
| 947 |
goto do_fault;
|
| 948 |
} |
| 949 |
if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) {
|
| 950 |
error_code = PG_ERROR_RSVD_MASK; |
| 951 |
goto do_fault;
|
| 952 |
} |
| 953 |
/* combine pde and pte nx, user and rw protections */
|
| 954 |
ptep &= pte ^ PG_NX_MASK; |
| 955 |
ptep ^= PG_NX_MASK; |
| 956 |
if ((ptep & PG_NX_MASK) && is_write1 == 2) |
| 957 |
goto do_fault_protect;
|
| 958 |
if (is_user) {
|
| 959 |
if (!(ptep & PG_USER_MASK))
|
| 960 |
goto do_fault_protect;
|
| 961 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 962 |
goto do_fault_protect;
|
| 963 |
} else {
|
| 964 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 965 |
is_write && !(ptep & PG_RW_MASK)) |
| 966 |
goto do_fault_protect;
|
| 967 |
} |
| 968 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 969 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 970 |
pte |= PG_ACCESSED_MASK; |
| 971 |
if (is_dirty)
|
| 972 |
pte |= PG_DIRTY_MASK; |
| 973 |
stl_phys_notdirty(pte_addr, pte); |
| 974 |
} |
| 975 |
page_size = 4096;
|
| 976 |
virt_addr = addr & ~0xfff;
|
| 977 |
pte = pte & (PHYS_ADDR_MASK | 0xfff);
|
| 978 |
} |
| 979 |
} else {
|
| 980 |
uint32_t pde; |
| 981 |
|
| 982 |
/* page directory entry */
|
| 983 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & |
| 984 |
env->a20_mask; |
| 985 |
pde = ldl_phys(pde_addr); |
| 986 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 987 |
error_code = 0;
|
| 988 |
goto do_fault;
|
| 989 |
} |
| 990 |
/* if PSE bit is set, then we use a 4MB page */
|
| 991 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 992 |
page_size = 4096 * 1024; |
| 993 |
if (is_user) {
|
| 994 |
if (!(pde & PG_USER_MASK))
|
| 995 |
goto do_fault_protect;
|
| 996 |
if (is_write && !(pde & PG_RW_MASK))
|
| 997 |
goto do_fault_protect;
|
| 998 |
} else {
|
| 999 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 1000 |
is_write && !(pde & PG_RW_MASK)) |
| 1001 |
goto do_fault_protect;
|
| 1002 |
} |
| 1003 |
is_dirty = is_write && !(pde & PG_DIRTY_MASK); |
| 1004 |
if (!(pde & PG_ACCESSED_MASK) || is_dirty) {
|
| 1005 |
pde |= PG_ACCESSED_MASK; |
| 1006 |
if (is_dirty)
|
| 1007 |
pde |= PG_DIRTY_MASK; |
| 1008 |
stl_phys_notdirty(pde_addr, pde); |
| 1009 |
} |
| 1010 |
|
| 1011 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 1012 |
ptep = pte; |
| 1013 |
virt_addr = addr & ~(page_size - 1);
|
| 1014 |
} else {
|
| 1015 |
if (!(pde & PG_ACCESSED_MASK)) {
|
| 1016 |
pde |= PG_ACCESSED_MASK; |
| 1017 |
stl_phys_notdirty(pde_addr, pde); |
| 1018 |
} |
| 1019 |
|
| 1020 |
/* page directory entry */
|
| 1021 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & |
| 1022 |
env->a20_mask; |
| 1023 |
pte = ldl_phys(pte_addr); |
| 1024 |
if (!(pte & PG_PRESENT_MASK)) {
|
| 1025 |
error_code = 0;
|
| 1026 |
goto do_fault;
|
| 1027 |
} |
| 1028 |
/* combine pde and pte user and rw protections */
|
| 1029 |
ptep = pte & pde; |
| 1030 |
if (is_user) {
|
| 1031 |
if (!(ptep & PG_USER_MASK))
|
| 1032 |
goto do_fault_protect;
|
| 1033 |
if (is_write && !(ptep & PG_RW_MASK))
|
| 1034 |
goto do_fault_protect;
|
| 1035 |
} else {
|
| 1036 |
if ((env->cr[0] & CR0_WP_MASK) && |
| 1037 |
is_write && !(ptep & PG_RW_MASK)) |
| 1038 |
goto do_fault_protect;
|
| 1039 |
} |
| 1040 |
is_dirty = is_write && !(pte & PG_DIRTY_MASK); |
| 1041 |
if (!(pte & PG_ACCESSED_MASK) || is_dirty) {
|
| 1042 |
pte |= PG_ACCESSED_MASK; |
| 1043 |
if (is_dirty)
|
| 1044 |
pte |= PG_DIRTY_MASK; |
| 1045 |
stl_phys_notdirty(pte_addr, pte); |
| 1046 |
} |
| 1047 |
page_size = 4096;
|
| 1048 |
virt_addr = addr & ~0xfff;
|
| 1049 |
} |
| 1050 |
} |
| 1051 |
/* the page can be put in the TLB */
|
| 1052 |
prot = PAGE_READ; |
| 1053 |
if (!(ptep & PG_NX_MASK))
|
| 1054 |
prot |= PAGE_EXEC; |
| 1055 |
if (pte & PG_DIRTY_MASK) {
|
| 1056 |
/* only set write access if already dirty... otherwise wait
|
| 1057 |
for dirty access */
|
| 1058 |
if (is_user) {
|
| 1059 |
if (ptep & PG_RW_MASK)
|
| 1060 |
prot |= PAGE_WRITE; |
| 1061 |
} else {
|
| 1062 |
if (!(env->cr[0] & CR0_WP_MASK) || |
| 1063 |
(ptep & PG_RW_MASK)) |
| 1064 |
prot |= PAGE_WRITE; |
| 1065 |
} |
| 1066 |
} |
| 1067 |
do_mapping:
|
| 1068 |
pte = pte & env->a20_mask; |
| 1069 |
|
| 1070 |
/* Even if 4MB pages, we map only one 4KB page in the cache to
|
| 1071 |
avoid filling it too fast */
|
| 1072 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 1073 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 1074 |
vaddr = virt_addr + page_offset; |
| 1075 |
|
| 1076 |
ret = tlb_set_page_exec(env, vaddr, paddr, prot, mmu_idx, is_softmmu); |
| 1077 |
return ret;
|
| 1078 |
do_fault_protect:
|
| 1079 |
error_code = PG_ERROR_P_MASK; |
| 1080 |
do_fault:
|
| 1081 |
error_code |= (is_write << PG_ERROR_W_BIT); |
| 1082 |
if (is_user)
|
| 1083 |
error_code |= PG_ERROR_U_MASK; |
| 1084 |
if (is_write1 == 2 && |
| 1085 |
(env->efer & MSR_EFER_NXE) && |
| 1086 |
(env->cr[4] & CR4_PAE_MASK))
|
| 1087 |
error_code |= PG_ERROR_I_D_MASK; |
| 1088 |
if (INTERCEPTEDl(_exceptions, 1 << EXCP0E_PAGE)) { |
| 1089 |
stq_phys(env->vm_vmcb + offsetof(struct vmcb, control.exit_info_2), addr);
|
| 1090 |
} else {
|
| 1091 |
env->cr[2] = addr;
|
| 1092 |
} |
| 1093 |
env->error_code = error_code; |
| 1094 |
env->exception_index = EXCP0E_PAGE; |
| 1095 |
/* the VMM will handle this */
|
| 1096 |
if (INTERCEPTEDl(_exceptions, 1 << EXCP0E_PAGE)) |
| 1097 |
return 2; |
| 1098 |
return 1; |
| 1099 |
} |
| 1100 |
|
| 1101 |
target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) |
| 1102 |
{
|
| 1103 |
uint32_t pde_addr, pte_addr; |
| 1104 |
uint32_t pde, pte, paddr, page_offset, page_size; |
| 1105 |
|
| 1106 |
if (env->cr[4] & CR4_PAE_MASK) { |
| 1107 |
uint32_t pdpe_addr, pde_addr, pte_addr; |
| 1108 |
uint32_t pdpe; |
| 1109 |
|
| 1110 |
/* XXX: we only use 32 bit physical addresses */
|
| 1111 |
#ifdef TARGET_X86_64
|
| 1112 |
if (env->hflags & HF_LMA_MASK) {
|
| 1113 |
uint32_t pml4e_addr, pml4e; |
| 1114 |
int32_t sext; |
| 1115 |
|
| 1116 |
/* test virtual address sign extension */
|
| 1117 |
sext = (int64_t)addr >> 47;
|
| 1118 |
if (sext != 0 && sext != -1) |
| 1119 |
return -1; |
| 1120 |
|
| 1121 |
pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & |
| 1122 |
env->a20_mask; |
| 1123 |
pml4e = ldl_phys(pml4e_addr); |
| 1124 |
if (!(pml4e & PG_PRESENT_MASK))
|
| 1125 |
return -1; |
| 1126 |
|
| 1127 |
pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & |
| 1128 |
env->a20_mask; |
| 1129 |
pdpe = ldl_phys(pdpe_addr); |
| 1130 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 1131 |
return -1; |
| 1132 |
} else
|
| 1133 |
#endif
|
| 1134 |
{
|
| 1135 |
pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 27) & 0x18)) & |
| 1136 |
env->a20_mask; |
| 1137 |
pdpe = ldl_phys(pdpe_addr); |
| 1138 |
if (!(pdpe & PG_PRESENT_MASK))
|
| 1139 |
return -1; |
| 1140 |
} |
| 1141 |
|
| 1142 |
pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & |
| 1143 |
env->a20_mask; |
| 1144 |
pde = ldl_phys(pde_addr); |
| 1145 |
if (!(pde & PG_PRESENT_MASK)) {
|
| 1146 |
return -1; |
| 1147 |
} |
| 1148 |
if (pde & PG_PSE_MASK) {
|
| 1149 |
/* 2 MB page */
|
| 1150 |
page_size = 2048 * 1024; |
| 1151 |
pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ |
| 1152 |
} else {
|
| 1153 |
/* 4 KB page */
|
| 1154 |
pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & |
| 1155 |
env->a20_mask; |
| 1156 |
page_size = 4096;
|
| 1157 |
pte = ldl_phys(pte_addr); |
| 1158 |
} |
| 1159 |
} else {
|
| 1160 |
if (!(env->cr[0] & CR0_PG_MASK)) { |
| 1161 |
pte = addr; |
| 1162 |
page_size = 4096;
|
| 1163 |
} else {
|
| 1164 |
/* page directory entry */
|
| 1165 |
pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & 0xffc)) & env->a20_mask; |
| 1166 |
pde = ldl_phys(pde_addr); |
| 1167 |
if (!(pde & PG_PRESENT_MASK))
|
| 1168 |
return -1; |
| 1169 |
if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { |
| 1170 |
pte = pde & ~0x003ff000; /* align to 4MB */ |
| 1171 |
page_size = 4096 * 1024; |
| 1172 |
} else {
|
| 1173 |
/* page directory entry */
|
| 1174 |
pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; |
| 1175 |
pte = ldl_phys(pte_addr); |
| 1176 |
if (!(pte & PG_PRESENT_MASK))
|
| 1177 |
return -1; |
| 1178 |
page_size = 4096;
|
| 1179 |
} |
| 1180 |
} |
| 1181 |
pte = pte & env->a20_mask; |
| 1182 |
} |
| 1183 |
|
| 1184 |
page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1);
|
| 1185 |
paddr = (pte & TARGET_PAGE_MASK) + page_offset; |
| 1186 |
return paddr;
|
| 1187 |
} |
| 1188 |
#endif /* !CONFIG_USER_ONLY */ |
| 1189 |
|
| 1190 |
#if defined(USE_CODE_COPY)
|
| 1191 |
struct fpstate {
|
| 1192 |
uint16_t fpuc; |
| 1193 |
uint16_t dummy1; |
| 1194 |
uint16_t fpus; |
| 1195 |
uint16_t dummy2; |
| 1196 |
uint16_t fptag; |
| 1197 |
uint16_t dummy3; |
| 1198 |
|
| 1199 |
uint32_t fpip; |
| 1200 |
uint32_t fpcs; |
| 1201 |
uint32_t fpoo; |
| 1202 |
uint32_t fpos; |
| 1203 |
uint8_t fpregs1[8 * 10]; |
| 1204 |
}; |
| 1205 |
|
| 1206 |
void restore_native_fp_state(CPUState *env)
|
| 1207 |
{
|
| 1208 |
int fptag, i, j;
|
| 1209 |
struct fpstate fp1, *fp = &fp1;
|
| 1210 |
|
| 1211 |
fp->fpuc = env->fpuc; |
| 1212 |
fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; |
| 1213 |
fptag = 0;
|
| 1214 |
for (i=7; i>=0; i--) { |
| 1215 |
fptag <<= 2;
|
| 1216 |
if (env->fptags[i]) {
|
| 1217 |
fptag |= 3;
|
| 1218 |
} else {
|
| 1219 |
/* the FPU automatically computes it */
|
| 1220 |
} |
| 1221 |
} |
| 1222 |
fp->fptag = fptag; |
| 1223 |
j = env->fpstt; |
| 1224 |
for(i = 0;i < 8; i++) { |
| 1225 |
memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10); |
| 1226 |
j = (j + 1) & 7; |
| 1227 |
} |
| 1228 |
asm volatile ("frstor %0" : "=m" (*fp)); |
| 1229 |
env->native_fp_regs = 1;
|
| 1230 |
} |
| 1231 |
|
| 1232 |
void save_native_fp_state(CPUState *env)
|
| 1233 |
{
|
| 1234 |
int fptag, i, j;
|
| 1235 |
uint16_t fpuc; |
| 1236 |
struct fpstate fp1, *fp = &fp1;
|
| 1237 |
|
| 1238 |
asm volatile ("fsave %0" : : "m" (*fp)); |
| 1239 |
env->fpuc = fp->fpuc; |
| 1240 |
env->fpstt = (fp->fpus >> 11) & 7; |
| 1241 |
env->fpus = fp->fpus & ~0x3800;
|
| 1242 |
fptag = fp->fptag; |
| 1243 |
for(i = 0;i < 8; i++) { |
| 1244 |
env->fptags[i] = ((fptag & 3) == 3); |
| 1245 |
fptag >>= 2;
|
| 1246 |
} |
| 1247 |
j = env->fpstt; |
| 1248 |
for(i = 0;i < 8; i++) { |
| 1249 |
memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10); |
| 1250 |
j = (j + 1) & 7; |
| 1251 |
} |
| 1252 |
/* we must restore the default rounding state */
|
| 1253 |
/* XXX: we do not restore the exception state */
|
| 1254 |
fpuc = 0x037f | (env->fpuc & (3 << 10)); |
| 1255 |
asm volatile("fldcw %0" : : "m" (fpuc)); |
| 1256 |
env->native_fp_regs = 0;
|
| 1257 |
} |
| 1258 |
#endif
|