diff options
Diffstat (limited to 'target-i386/helper2.c')
| -rw-r--r-- | target-i386/helper2.c | 1031 |
1 files changed, 0 insertions, 1031 deletions
diff --git a/target-i386/helper2.c b/target-i386/helper2.c deleted file mode 100644 index 19af159..0000000 --- a/target-i386/helper2.c +++ /dev/null @@ -1,1031 +0,0 @@ -/* - * i386 helpers (without register variable usage) - * - * Copyright (c) 2003 Fabrice Bellard - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include <stdarg.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <inttypes.h> -#include <signal.h> -#include <assert.h> - -#include "cpu.h" -#include "exec-all.h" - -//#define DEBUG_MMU - -#ifdef USE_CODE_COPY -#include <asm/ldt.h> -#include <linux/unistd.h> -#include <linux/version.h> - -int modify_ldt(int func, void *ptr, unsigned long bytecount) -{ - return syscall(__NR_modify_ldt, func, ptr, bytecount); -} - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 5, 66) -#define modify_ldt_ldt_s user_desc -#endif -#endif /* USE_CODE_COPY */ - -CPUX86State *cpu_x86_init(void) -{ - CPUX86State *env; - static int inited; - - env = qemu_mallocz(sizeof(CPUX86State)); - if (!env) - return NULL; - cpu_exec_init(env); - - /* init various static tables */ - if (!inited) { - inited = 1; - optimize_flags_init(); - } -#ifdef USE_CODE_COPY - /* testing code for code copy case */ - { - struct modify_ldt_ldt_s ldt; - - ldt.entry_number = 1; - ldt.base_addr = (unsigned long)env; - ldt.limit = (sizeof(CPUState) + 0xfff) >> 12; - ldt.seg_32bit = 1; - ldt.contents = MODIFY_LDT_CONTENTS_DATA; - ldt.read_exec_only = 0; - ldt.limit_in_pages = 1; - ldt.seg_not_present = 0; - ldt.useable = 1; - modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */ - - asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7)); - } -#endif - { - int family, model, stepping; -#ifdef TARGET_X86_64 - env->cpuid_vendor1 = 0x68747541; /* "Auth" */ - env->cpuid_vendor2 = 0x69746e65; /* "enti" */ - env->cpuid_vendor3 = 0x444d4163; /* "cAMD" */ - family = 6; - model = 2; - stepping = 3; -#else - env->cpuid_vendor1 = 0x756e6547; /* "Genu" */ - env->cpuid_vendor2 = 0x49656e69; /* "ineI" */ - env->cpuid_vendor3 = 0x6c65746e; /* "ntel" */ -#if 0 - /* pentium 75-200 */ - family = 5; - model = 2; - stepping = 11; -#else - /* pentium pro */ - family = 6; - model = 3; - stepping = 3; -#endif -#endif - env->cpuid_level = 2; - env->cpuid_version = (family << 8) | (model << 4) | stepping; - env->cpuid_features = (CPUID_FP87 | CPUID_DE | CPUID_PSE | - CPUID_TSC | CPUID_MSR | CPUID_MCE | - CPUID_CX8 | CPUID_PGE | CPUID_CMOV | - CPUID_PAT); - env->pat = 0x0007040600070406ULL; - env->cpuid_ext_features = CPUID_EXT_SSE3; - env->cpuid_features |= CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | CPUID_PAE | CPUID_SEP; - env->cpuid_features |= CPUID_APIC; - env->cpuid_xlevel = 0; - { - const char *model_id = "QEMU Virtual CPU version " QEMU_VERSION; - int c, len, i; - len = strlen(model_id); - for(i = 0; i < 48; i++) { - if (i >= len) - c = '\0'; - else - c = model_id[i]; - env->cpuid_model[i >> 2] |= c << (8 * (i & 3)); - } - } -#ifdef TARGET_X86_64 - /* currently not enabled for std i386 because not fully tested */ - env->cpuid_ext2_features = (env->cpuid_features & 0x0183F3FF); - env->cpuid_ext2_features |= CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX; - env->cpuid_xlevel = 0x80000008; - - /* these features are needed for Win64 and aren't fully implemented */ - env->cpuid_features |= CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA; -#endif - } - cpu_reset(env); -#ifdef USE_KQEMU - kqemu_init(env); -#endif - return env; -} - -/* NOTE: must be called outside the CPU execute loop */ -void cpu_reset(CPUX86State *env) -{ - int i; - - memset(env, 0, offsetof(CPUX86State, breakpoints)); - - tlb_flush(env, 1); - - /* init to reset state */ - -#ifdef CONFIG_SOFTMMU - env->hflags |= HF_SOFTMMU_MASK; -#endif - - cpu_x86_update_cr0(env, 0x60000010); - env->a20_mask = 0xffffffff; - - env->idt.limit = 0xffff; - env->gdt.limit = 0xffff; - env->ldt.limit = 0xffff; - env->ldt.flags = DESC_P_MASK; - env->tr.limit = 0xffff; - env->tr.flags = DESC_P_MASK; - - cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff, 0); - cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff, 0); - cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff, 0); - cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff, 0); - cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff, 0); - cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff, 0); - - env->eip = 0xfff0; - env->regs[R_EDX] = 0x600; /* indicate P6 processor */ - - env->eflags = 0x2; - - /* FPU init */ - for(i = 0;i < 8; i++) - env->fptags[i] = 1; - env->fpuc = 0x37f; - - env->mxcsr = 0x1f80; -} - -void cpu_x86_close(CPUX86State *env) -{ - free(env); -} - -/***********************************************************/ -/* x86 debug */ - -static const char *cc_op_str[] = { - "DYNAMIC", - "EFLAGS", - - "MULB", - "MULW", - "MULL", - "MULQ", - - "ADDB", - "ADDW", - "ADDL", - "ADDQ", - - "ADCB", - "ADCW", - "ADCL", - "ADCQ", - - "SUBB", - "SUBW", - "SUBL", - "SUBQ", - - "SBBB", - "SBBW", - "SBBL", - "SBBQ", - - "LOGICB", - "LOGICW", - "LOGICL", - "LOGICQ", - - "INCB", - "INCW", - "INCL", - "INCQ", - - "DECB", - "DECW", - "DECL", - "DECQ", - - "SHLB", - "SHLW", - "SHLL", - "SHLQ", - - "SARB", - "SARW", - "SARL", - "SARQ", -}; - -void cpu_dump_state(CPUState *env, FILE *f, - int (*cpu_fprintf)(FILE *f, const char *fmt, ...), - int flags) -{ - int eflags, i, nb; - char cc_op_name[32]; - static const char *seg_name[6] = { "ES", "CS", "SS", "DS", "FS", "GS" }; - - eflags = env->eflags; -#ifdef TARGET_X86_64 - if (env->hflags & HF_CS64_MASK) { - cpu_fprintf(f, - "RAX=%016" PRIx64 " RBX=%016" PRIx64 " RCX=%016" PRIx64 " RDX=%016" PRIx64 "\n" - "RSI=%016" PRIx64 " RDI=%016" PRIx64 " RBP=%016" PRIx64 " RSP=%016" PRIx64 "\n" - "R8 =%016" PRIx64 " R9 =%016" PRIx64 " R10=%016" PRIx64 " R11=%016" PRIx64 "\n" - "R12=%016" PRIx64 " R13=%016" PRIx64 " R14=%016" PRIx64 " R15=%016" PRIx64 "\n" - "RIP=%016" PRIx64 " RFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d HLT=%d\n", - env->regs[R_EAX], - env->regs[R_EBX], - env->regs[R_ECX], - env->regs[R_EDX], - env->regs[R_ESI], - env->regs[R_EDI], - env->regs[R_EBP], - env->regs[R_ESP], - env->regs[8], - env->regs[9], - env->regs[10], - env->regs[11], - env->regs[12], - env->regs[13], - env->regs[14], - env->regs[15], - env->eip, eflags, - eflags & DF_MASK ? 'D' : '-', - eflags & CC_O ? 'O' : '-', - eflags & CC_S ? 'S' : '-', - eflags & CC_Z ? 'Z' : '-', - eflags & CC_A ? 'A' : '-', - eflags & CC_P ? 'P' : '-', - eflags & CC_C ? 'C' : '-', - env->hflags & HF_CPL_MASK, - (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1, - (env->a20_mask >> 20) & 1, - (env->hflags >> HF_HALTED_SHIFT) & 1); - } else -#endif - { - cpu_fprintf(f, "EAX=%08x EBX=%08x ECX=%08x EDX=%08x\n" - "ESI=%08x EDI=%08x EBP=%08x ESP=%08x\n" - "EIP=%08x EFL=%08x [%c%c%c%c%c%c%c] CPL=%d II=%d A20=%d HLT=%d\n", - (uint32_t)env->regs[R_EAX], - (uint32_t)env->regs[R_EBX], - (uint32_t)env->regs[R_ECX], - (uint32_t)env->regs[R_EDX], - (uint32_t)env->regs[R_ESI], - (uint32_t)env->regs[R_EDI], - (uint32_t)env->regs[R_EBP], - (uint32_t)env->regs[R_ESP], - (uint32_t)env->eip, eflags, - eflags & DF_MASK ? 'D' : '-', - eflags & CC_O ? 'O' : '-', - eflags & CC_S ? 'S' : '-', - eflags & CC_Z ? 'Z' : '-', - eflags & CC_A ? 'A' : '-', - eflags & CC_P ? 'P' : '-', - eflags & CC_C ? 'C' : '-', - env->hflags & HF_CPL_MASK, - (env->hflags >> HF_INHIBIT_IRQ_SHIFT) & 1, - (env->a20_mask >> 20) & 1, - (env->hflags >> HF_HALTED_SHIFT) & 1); - } - -#ifdef TARGET_X86_64 - if (env->hflags & HF_LMA_MASK) { - for(i = 0; i < 6; i++) { - SegmentCache *sc = &env->segs[i]; - cpu_fprintf(f, "%s =%04x %016" PRIx64 " %08x %08x\n", - seg_name[i], - sc->selector, - sc->base, - sc->limit, - sc->flags); - } - cpu_fprintf(f, "LDT=%04x %016" PRIx64 " %08x %08x\n", - env->ldt.selector, - env->ldt.base, - env->ldt.limit, - env->ldt.flags); - cpu_fprintf(f, "TR =%04x %016" PRIx64 " %08x %08x\n", - env->tr.selector, - env->tr.base, - env->tr.limit, - env->tr.flags); - cpu_fprintf(f, "GDT= %016" PRIx64 " %08x\n", - env->gdt.base, env->gdt.limit); - cpu_fprintf(f, "IDT= %016" PRIx64 " %08x\n", - env->idt.base, env->idt.limit); - cpu_fprintf(f, "CR0=%08x CR2=%016" PRIx64 " CR3=%016" PRIx64 " CR4=%08x\n", - (uint32_t)env->cr[0], - env->cr[2], - env->cr[3], - (uint32_t)env->cr[4]); - } else -#endif - { - for(i = 0; i < 6; i++) { - SegmentCache *sc = &env->segs[i]; - cpu_fprintf(f, "%s =%04x %08x %08x %08x\n", - seg_name[i], - sc->selector, - (uint32_t)sc->base, - sc->limit, - sc->flags); - } - cpu_fprintf(f, "LDT=%04x %08x %08x %08x\n", - env->ldt.selector, - (uint32_t)env->ldt.base, - env->ldt.limit, - env->ldt.flags); - cpu_fprintf(f, "TR =%04x %08x %08x %08x\n", - env->tr.selector, - (uint32_t)env->tr.base, - env->tr.limit, - env->tr.flags); - cpu_fprintf(f, "GDT= %08x %08x\n", - (uint32_t)env->gdt.base, env->gdt.limit); - cpu_fprintf(f, "IDT= %08x %08x\n", - (uint32_t)env->idt.base, env->idt.limit); - cpu_fprintf(f, "CR0=%08x CR2=%08x CR3=%08x CR4=%08x\n", - (uint32_t)env->cr[0], - (uint32_t)env->cr[2], - (uint32_t)env->cr[3], - (uint32_t)env->cr[4]); - } - if (flags & X86_DUMP_CCOP) { - if ((unsigned)env->cc_op < CC_OP_NB) - snprintf(cc_op_name, sizeof(cc_op_name), "%s", cc_op_str[env->cc_op]); - else - snprintf(cc_op_name, sizeof(cc_op_name), "[%d]", env->cc_op); -#ifdef TARGET_X86_64 - if (env->hflags & HF_CS64_MASK) { - cpu_fprintf(f, "CCS=%016" PRIx64 " CCD=%016" PRIx64 " CCO=%-8s\n", - env->cc_src, env->cc_dst, - cc_op_name); - } else -#endif - { - cpu_fprintf(f, "CCS=%08x CCD=%08x CCO=%-8s\n", - (uint32_t)env->cc_src, (uint32_t)env->cc_dst, - cc_op_name); - } - } - if (flags & X86_DUMP_FPU) { - int fptag; - fptag = 0; - for(i = 0; i < 8; i++) { - fptag |= ((!env->fptags[i]) << i); - } - cpu_fprintf(f, "FCW=%04x FSW=%04x [ST=%d] FTW=%02x MXCSR=%08x\n", - env->fpuc, - (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11, - env->fpstt, - fptag, - env->mxcsr); - for(i=0;i<8;i++) { -#if defined(USE_X86LDOUBLE) - union { - long double d; - struct { - uint64_t lower; - uint16_t upper; - } l; - } tmp; - tmp.d = env->fpregs[i].d; - cpu_fprintf(f, "FPR%d=%016" PRIx64 " %04x", - i, tmp.l.lower, tmp.l.upper); -#else - cpu_fprintf(f, "FPR%d=%016" PRIx64, - i, env->fpregs[i].mmx.q); -#endif - if ((i & 1) == 1) - cpu_fprintf(f, "\n"); - else - cpu_fprintf(f, " "); - } - if (env->hflags & HF_CS64_MASK) - nb = 16; - else - nb = 8; - for(i=0;i<nb;i++) { - cpu_fprintf(f, "XMM%02d=%08x%08x%08x%08x", - i, - env->xmm_regs[i].XMM_L(3), - env->xmm_regs[i].XMM_L(2), - env->xmm_regs[i].XMM_L(1), - env->xmm_regs[i].XMM_L(0)); - if ((i & 1) == 1) - cpu_fprintf(f, "\n"); - else - cpu_fprintf(f, " "); - } - } -} - -/***********************************************************/ -/* x86 mmu */ -/* XXX: add PGE support */ - -void cpu_x86_set_a20(CPUX86State *env, int a20_state) -{ - a20_state = (a20_state != 0); - if (a20_state != ((env->a20_mask >> 20) & 1)) { -#if defined(DEBUG_MMU) - printf("A20 update: a20=%d\n", a20_state); -#endif - /* if the cpu is currently executing code, we must unlink it and - all the potentially executing TB */ - cpu_interrupt(env, CPU_INTERRUPT_EXITTB); - - /* when a20 is changed, all the MMU mappings are invalid, so - we must flush everything */ - tlb_flush(env, 1); - env->a20_mask = 0xffefffff | (a20_state << 20); - } -} - -void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0) -{ - int pe_state; - -#if defined(DEBUG_MMU) - printf("CR0 update: CR0=0x%08x\n", new_cr0); -#endif - if ((new_cr0 & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK)) != - (env->cr[0] & (CR0_PG_MASK | CR0_WP_MASK | CR0_PE_MASK))) { - tlb_flush(env, 1); - } - -#ifdef TARGET_X86_64 - if (!(env->cr[0] & CR0_PG_MASK) && (new_cr0 & CR0_PG_MASK) && - (env->efer & MSR_EFER_LME)) { - /* enter in long mode */ - /* XXX: generate an exception */ - if (!(env->cr[4] & CR4_PAE_MASK)) - return; - env->efer |= MSR_EFER_LMA; - env->hflags |= HF_LMA_MASK; - } else if ((env->cr[0] & CR0_PG_MASK) && !(new_cr0 & CR0_PG_MASK) && - (env->efer & MSR_EFER_LMA)) { - /* exit long mode */ - env->efer &= ~MSR_EFER_LMA; - env->hflags &= ~(HF_LMA_MASK | HF_CS64_MASK); - env->eip &= 0xffffffff; - } -#endif - env->cr[0] = new_cr0 | CR0_ET_MASK; - - /* update PE flag in hidden flags */ - pe_state = (env->cr[0] & CR0_PE_MASK); - env->hflags = (env->hflags & ~HF_PE_MASK) | (pe_state << HF_PE_SHIFT); - /* ensure that ADDSEG is always set in real mode */ - env->hflags |= ((pe_state ^ 1) << HF_ADDSEG_SHIFT); - /* update FPU flags */ - env->hflags = (env->hflags & ~(HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)) | - ((new_cr0 << (HF_MP_SHIFT - 1)) & (HF_MP_MASK | HF_EM_MASK | HF_TS_MASK)); -} - -/* XXX: in legacy PAE mode, generate a GPF if reserved bits are set in - the PDPT */ -void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3) -{ - env->cr[3] = new_cr3; - if (env->cr[0] & CR0_PG_MASK) { -#if defined(DEBUG_MMU) - printf("CR3 update: CR3=" TARGET_FMT_lx "\n", new_cr3); -#endif - tlb_flush(env, 0); - } -} - -void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4) -{ -#if defined(DEBUG_MMU) - printf("CR4 update: CR4=%08x\n", (uint32_t)env->cr[4]); -#endif - if ((new_cr4 & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK)) != - (env->cr[4] & (CR4_PGE_MASK | CR4_PAE_MASK | CR4_PSE_MASK))) { - tlb_flush(env, 1); - } - /* SSE handling */ - if (!(env->cpuid_features & CPUID_SSE)) - new_cr4 &= ~CR4_OSFXSR_MASK; - if (new_cr4 & CR4_OSFXSR_MASK) - env->hflags |= HF_OSFXSR_MASK; - else - env->hflags &= ~HF_OSFXSR_MASK; - - env->cr[4] = new_cr4; -} - -/* XXX: also flush 4MB pages */ -void cpu_x86_flush_tlb(CPUX86State *env, target_ulong addr) -{ - tlb_flush_page(env, addr); -} - -#if defined(CONFIG_USER_ONLY) - -int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr, - int is_write, int is_user, int is_softmmu) -{ - /* user mode only emulation */ - is_write &= 1; - env->cr[2] = addr; - env->error_code = (is_write << PG_ERROR_W_BIT); - env->error_code |= PG_ERROR_U_MASK; - env->exception_index = EXCP0E_PAGE; - return 1; -} - -target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) -{ - return addr; -} - -#else - -#define PHYS_ADDR_MASK 0xfffff000 - -/* return value: - -1 = cannot handle fault - 0 = nothing more to do - 1 = generate PF fault - 2 = soft MMU activation required for this block -*/ -int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr, - int is_write1, int is_user, int is_softmmu) -{ - uint64_t ptep, pte; - uint32_t pdpe_addr, pde_addr, pte_addr; - int error_code, is_dirty, prot, page_size, ret, is_write; - unsigned long paddr, page_offset; - target_ulong vaddr, virt_addr; - -#if defined(DEBUG_MMU) - printf("MMU fault: addr=" TARGET_FMT_lx " w=%d u=%d eip=" TARGET_FMT_lx "\n", - addr, is_write1, is_user, env->eip); -#endif - is_write = is_write1 & 1; - - if (!(env->cr[0] & CR0_PG_MASK)) { - pte = addr; - virt_addr = addr & TARGET_PAGE_MASK; - prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; - page_size = 4096; - goto do_mapping; - } - - if (env->cr[4] & CR4_PAE_MASK) { - uint64_t pde, pdpe; - - /* XXX: we only use 32 bit physical addresses */ -#ifdef TARGET_X86_64 - if (env->hflags & HF_LMA_MASK) { - uint32_t pml4e_addr; - uint64_t pml4e; - int32_t sext; - - /* test virtual address sign extension */ - sext = (int64_t)addr >> 47; - if (sext != 0 && sext != -1) { - env->error_code = 0; - env->exception_index = EXCP0D_GPF; - return 1; - } - - pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & - env->a20_mask; - pml4e = ldq_phys(pml4e_addr); - if (!(pml4e & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - if (!(env->efer & MSR_EFER_NXE) && (pml4e & PG_NX_MASK)) { - error_code = PG_ERROR_RSVD_MASK; - goto do_fault; - } - if (!(pml4e & PG_ACCESSED_MASK)) { - pml4e |= PG_ACCESSED_MASK; - stl_phys_notdirty(pml4e_addr, pml4e); - } - ptep = pml4e ^ PG_NX_MASK; - pdpe_addr = ((pml4e & PHYS_ADDR_MASK) + (((addr >> 30) & 0x1ff) << 3)) & - env->a20_mask; - pdpe = ldq_phys(pdpe_addr); - if (!(pdpe & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - if (!(env->efer & MSR_EFER_NXE) && (pdpe & PG_NX_MASK)) { - error_code = PG_ERROR_RSVD_MASK; - goto do_fault; - } - ptep &= pdpe ^ PG_NX_MASK; - if (!(pdpe & PG_ACCESSED_MASK)) { - pdpe |= PG_ACCESSED_MASK; - stl_phys_notdirty(pdpe_addr, pdpe); - } - } else -#endif - { - /* XXX: load them when cr3 is loaded ? */ - pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 30) << 3)) & - env->a20_mask; - pdpe = ldq_phys(pdpe_addr); - if (!(pdpe & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - ptep = PG_NX_MASK | PG_USER_MASK | PG_RW_MASK; - } - - pde_addr = ((pdpe & PHYS_ADDR_MASK) + (((addr >> 21) & 0x1ff) << 3)) & - env->a20_mask; - pde = ldq_phys(pde_addr); - if (!(pde & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - if (!(env->efer & MSR_EFER_NXE) && (pde & PG_NX_MASK)) { - error_code = PG_ERROR_RSVD_MASK; - goto do_fault; - } - ptep &= pde ^ PG_NX_MASK; - if (pde & PG_PSE_MASK) { - /* 2 MB page */ - page_size = 2048 * 1024; - ptep ^= PG_NX_MASK; - if ((ptep & PG_NX_MASK) && is_write1 == 2) - goto do_fault_protect; - if (is_user) { - if (!(ptep & PG_USER_MASK)) - goto do_fault_protect; - if (is_write && !(ptep & PG_RW_MASK)) - goto do_fault_protect; - } else { - if ((env->cr[0] & CR0_WP_MASK) && - is_write && !(ptep & PG_RW_MASK)) - goto do_fault_protect; - } - is_dirty = is_write && !(pde & PG_DIRTY_MASK); - if (!(pde & PG_ACCESSED_MASK) || is_dirty) { - pde |= PG_ACCESSED_MASK; - if (is_dirty) - pde |= PG_DIRTY_MASK; - stl_phys_notdirty(pde_addr, pde); - } - /* align to page_size */ - pte = pde & ((PHYS_ADDR_MASK & ~(page_size - 1)) | 0xfff); - virt_addr = addr & ~(page_size - 1); - } else { - /* 4 KB page */ - if (!(pde & PG_ACCESSED_MASK)) { - pde |= PG_ACCESSED_MASK; - stl_phys_notdirty(pde_addr, pde); - } - pte_addr = ((pde & PHYS_ADDR_MASK) + (((addr >> 12) & 0x1ff) << 3)) & - env->a20_mask; - pte = ldq_phys(pte_addr); - if (!(pte & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - if (!(env->efer & MSR_EFER_NXE) && (pte & PG_NX_MASK)) { - error_code = PG_ERROR_RSVD_MASK; - goto do_fault; - } - /* combine pde and pte nx, user and rw protections */ - ptep &= pte ^ PG_NX_MASK; - ptep ^= PG_NX_MASK; - if ((ptep & PG_NX_MASK) && is_write1 == 2) - goto do_fault_protect; - if (is_user) { - if (!(ptep & PG_USER_MASK)) - goto do_fault_protect; - if (is_write && !(ptep & PG_RW_MASK)) - goto do_fault_protect; - } else { - if ((env->cr[0] & CR0_WP_MASK) && - is_write && !(ptep & PG_RW_MASK)) - goto do_fault_protect; - } - is_dirty = is_write && !(pte & PG_DIRTY_MASK); - if (!(pte & PG_ACCESSED_MASK) || is_dirty) { - pte |= PG_ACCESSED_MASK; - if (is_dirty) - pte |= PG_DIRTY_MASK; - stl_phys_notdirty(pte_addr, pte); - } - page_size = 4096; - virt_addr = addr & ~0xfff; - pte = pte & (PHYS_ADDR_MASK | 0xfff); - } - } else { - uint32_t pde; - - /* page directory entry */ - pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & ~3)) & - env->a20_mask; - pde = ldl_phys(pde_addr); - if (!(pde & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - /* if PSE bit is set, then we use a 4MB page */ - if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { - page_size = 4096 * 1024; - if (is_user) { - if (!(pde & PG_USER_MASK)) - goto do_fault_protect; - if (is_write && !(pde & PG_RW_MASK)) - goto do_fault_protect; - } else { - if ((env->cr[0] & CR0_WP_MASK) && - is_write && !(pde & PG_RW_MASK)) - goto do_fault_protect; - } - is_dirty = is_write && !(pde & PG_DIRTY_MASK); - if (!(pde & PG_ACCESSED_MASK) || is_dirty) { - pde |= PG_ACCESSED_MASK; - if (is_dirty) - pde |= PG_DIRTY_MASK; - stl_phys_notdirty(pde_addr, pde); - } - - pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ - ptep = pte; - virt_addr = addr & ~(page_size - 1); - } else { - if (!(pde & PG_ACCESSED_MASK)) { - pde |= PG_ACCESSED_MASK; - stl_phys_notdirty(pde_addr, pde); - } - - /* page directory entry */ - pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & - env->a20_mask; - pte = ldl_phys(pte_addr); - if (!(pte & PG_PRESENT_MASK)) { - error_code = 0; - goto do_fault; - } - /* combine pde and pte user and rw protections */ - ptep = pte & pde; - if (is_user) { - if (!(ptep & PG_USER_MASK)) - goto do_fault_protect; - if (is_write && !(ptep & PG_RW_MASK)) - goto do_fault_protect; - } else { - if ((env->cr[0] & CR0_WP_MASK) && - is_write && !(ptep & PG_RW_MASK)) - goto do_fault_protect; - } - is_dirty = is_write && !(pte & PG_DIRTY_MASK); - if (!(pte & PG_ACCESSED_MASK) || is_dirty) { - pte |= PG_ACCESSED_MASK; - if (is_dirty) - pte |= PG_DIRTY_MASK; - stl_phys_notdirty(pte_addr, pte); - } - page_size = 4096; - virt_addr = addr & ~0xfff; - } - } - /* the page can be put in the TLB */ - prot = PAGE_READ; - if (!(ptep & PG_NX_MASK)) - prot |= PAGE_EXEC; - if (pte & PG_DIRTY_MASK) { - /* only set write access if already dirty... otherwise wait - for dirty access */ - if (is_user) { - if (ptep & PG_RW_MASK) - prot |= PAGE_WRITE; - } else { - if (!(env->cr[0] & CR0_WP_MASK) || - (ptep & PG_RW_MASK)) - prot |= PAGE_WRITE; - } - } - do_mapping: - pte = pte & env->a20_mask; - - /* Even if 4MB pages, we map only one 4KB page in the cache to - avoid filling it too fast */ - page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1); - paddr = (pte & TARGET_PAGE_MASK) + page_offset; - vaddr = virt_addr + page_offset; - - ret = tlb_set_page_exec(env, vaddr, paddr, prot, is_user, is_softmmu); - return ret; - do_fault_protect: - error_code = PG_ERROR_P_MASK; - do_fault: - env->cr[2] = addr; - error_code |= (is_write << PG_ERROR_W_BIT); - if (is_user) - error_code |= PG_ERROR_U_MASK; - if (is_write1 == 2 && - (env->efer & MSR_EFER_NXE) && - (env->cr[4] & CR4_PAE_MASK)) - error_code |= PG_ERROR_I_D_MASK; - env->error_code = error_code; - env->exception_index = EXCP0E_PAGE; - return 1; -} - -target_ulong cpu_get_phys_page_debug(CPUState *env, target_ulong addr) -{ - uint32_t pde_addr, pte_addr; - uint32_t pde, pte, paddr, page_offset, page_size; - - if (env->cr[4] & CR4_PAE_MASK) { - uint32_t pdpe_addr, pde_addr, pte_addr; - uint32_t pdpe; - - /* XXX: we only use 32 bit physical addresses */ -#ifdef TARGET_X86_64 - if (env->hflags & HF_LMA_MASK) { - uint32_t pml4e_addr, pml4e; - int32_t sext; - - /* test virtual address sign extension */ - sext = (int64_t)addr >> 47; - if (sext != 0 && sext != -1) - return -1; - - pml4e_addr = ((env->cr[3] & ~0xfff) + (((addr >> 39) & 0x1ff) << 3)) & - env->a20_mask; - pml4e = ldl_phys(pml4e_addr); - if (!(pml4e & PG_PRESENT_MASK)) - return -1; - - pdpe_addr = ((pml4e & ~0xfff) + (((addr >> 30) & 0x1ff) << 3)) & - env->a20_mask; - pdpe = ldl_phys(pdpe_addr); - if (!(pdpe & PG_PRESENT_MASK)) - return -1; - } else -#endif - { - pdpe_addr = ((env->cr[3] & ~0x1f) + ((addr >> 30) << 3)) & - env->a20_mask; - pdpe = ldl_phys(pdpe_addr); - if (!(pdpe & PG_PRESENT_MASK)) - return -1; - } - - pde_addr = ((pdpe & ~0xfff) + (((addr >> 21) & 0x1ff) << 3)) & - env->a20_mask; - pde = ldl_phys(pde_addr); - if (!(pde & PG_PRESENT_MASK)) { - return -1; - } - if (pde & PG_PSE_MASK) { - /* 2 MB page */ - page_size = 2048 * 1024; - pte = pde & ~( (page_size - 1) & ~0xfff); /* align to page_size */ - } else { - /* 4 KB page */ - pte_addr = ((pde & ~0xfff) + (((addr >> 12) & 0x1ff) << 3)) & - env->a20_mask; - page_size = 4096; - pte = ldl_phys(pte_addr); - } - } else { - if (!(env->cr[0] & CR0_PG_MASK)) { - pte = addr; - page_size = 4096; - } else { - /* page directory entry */ - pde_addr = ((env->cr[3] & ~0xfff) + ((addr >> 20) & ~3)) & env->a20_mask; - pde = ldl_phys(pde_addr); - if (!(pde & PG_PRESENT_MASK)) - return -1; - if ((pde & PG_PSE_MASK) && (env->cr[4] & CR4_PSE_MASK)) { - pte = pde & ~0x003ff000; /* align to 4MB */ - page_size = 4096 * 1024; - } else { - /* page directory entry */ - pte_addr = ((pde & ~0xfff) + ((addr >> 10) & 0xffc)) & env->a20_mask; - pte = ldl_phys(pte_addr); - if (!(pte & PG_PRESENT_MASK)) - return -1; - page_size = 4096; - } - } - pte = pte & env->a20_mask; - } - - page_offset = (addr & TARGET_PAGE_MASK) & (page_size - 1); - paddr = (pte & TARGET_PAGE_MASK) + page_offset; - return paddr; -} -#endif /* !CONFIG_USER_ONLY */ - -#if defined(USE_CODE_COPY) -struct fpstate { - uint16_t fpuc; - uint16_t dummy1; - uint16_t fpus; - uint16_t dummy2; - uint16_t fptag; - uint16_t dummy3; - - uint32_t fpip; - uint32_t fpcs; - uint32_t fpoo; - uint32_t fpos; - uint8_t fpregs1[8 * 10]; -}; - -void restore_native_fp_state(CPUState *env) -{ - int fptag, i, j; - struct fpstate fp1, *fp = &fp1; - - fp->fpuc = env->fpuc; - fp->fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; - fptag = 0; - for (i=7; i>=0; i--) { - fptag <<= 2; - if (env->fptags[i]) { - fptag |= 3; - } else { - /* the FPU automatically computes it */ - } - } - fp->fptag = fptag; - j = env->fpstt; - for(i = 0;i < 8; i++) { - memcpy(&fp->fpregs1[i * 10], &env->fpregs[j].d, 10); - j = (j + 1) & 7; - } - asm volatile ("frstor %0" : "=m" (*fp)); - env->native_fp_regs = 1; -} - -void save_native_fp_state(CPUState *env) -{ - int fptag, i, j; - uint16_t fpuc; - struct fpstate fp1, *fp = &fp1; - - asm volatile ("fsave %0" : : "m" (*fp)); - env->fpuc = fp->fpuc; - env->fpstt = (fp->fpus >> 11) & 7; - env->fpus = fp->fpus & ~0x3800; - fptag = fp->fptag; - for(i = 0;i < 8; i++) { - env->fptags[i] = ((fptag & 3) == 3); - fptag >>= 2; - } - j = env->fpstt; - for(i = 0;i < 8; i++) { - memcpy(&env->fpregs[j].d, &fp->fpregs1[i * 10], 10); - j = (j + 1) & 7; - } - /* we must restore the default rounding state */ - /* XXX: we do not restore the exception state */ - fpuc = 0x037f | (env->fpuc & (3 << 10)); - asm volatile("fldcw %0" : : "m" (fpuc)); - env->native_fp_regs = 0; -} -#endif |