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Diffstat (limited to 'ANDROID_3.4.5/arch/x86/include/asm/kvm_emulate.h')
-rw-r--r-- | ANDROID_3.4.5/arch/x86/include/asm/kvm_emulate.h | 395 |
1 files changed, 0 insertions, 395 deletions
diff --git a/ANDROID_3.4.5/arch/x86/include/asm/kvm_emulate.h b/ANDROID_3.4.5/arch/x86/include/asm/kvm_emulate.h deleted file mode 100644 index c222e1a1..00000000 --- a/ANDROID_3.4.5/arch/x86/include/asm/kvm_emulate.h +++ /dev/null @@ -1,395 +0,0 @@ -/****************************************************************************** - * x86_emulate.h - * - * Generic x86 (32-bit and 64-bit) instruction decoder and emulator. - * - * Copyright (c) 2005 Keir Fraser - * - * From: xen-unstable 10676:af9809f51f81a3c43f276f00c81a52ef558afda4 - */ - -#ifndef _ASM_X86_KVM_X86_EMULATE_H -#define _ASM_X86_KVM_X86_EMULATE_H - -#include <asm/desc_defs.h> - -struct x86_emulate_ctxt; -enum x86_intercept; -enum x86_intercept_stage; - -struct x86_exception { - u8 vector; - bool error_code_valid; - u16 error_code; - bool nested_page_fault; - u64 address; /* cr2 or nested page fault gpa */ -}; - -/* - * This struct is used to carry enough information from the instruction - * decoder to main KVM so that a decision can be made whether the - * instruction needs to be intercepted or not. - */ -struct x86_instruction_info { - u8 intercept; /* which intercept */ - u8 rep_prefix; /* rep prefix? */ - u8 modrm_mod; /* mod part of modrm */ - u8 modrm_reg; /* index of register used */ - u8 modrm_rm; /* rm part of modrm */ - u64 src_val; /* value of source operand */ - u8 src_bytes; /* size of source operand */ - u8 dst_bytes; /* size of destination operand */ - u8 ad_bytes; /* size of src/dst address */ - u64 next_rip; /* rip following the instruction */ -}; - -/* - * x86_emulate_ops: - * - * These operations represent the instruction emulator's interface to memory. - * There are two categories of operation: those that act on ordinary memory - * regions (*_std), and those that act on memory regions known to require - * special treatment or emulation (*_emulated). - * - * The emulator assumes that an instruction accesses only one 'emulated memory' - * location, that this location is the given linear faulting address (cr2), and - * that this is one of the instruction's data operands. Instruction fetches and - * stack operations are assumed never to access emulated memory. The emulator - * automatically deduces which operand of a string-move operation is accessing - * emulated memory, and assumes that the other operand accesses normal memory. - * - * NOTES: - * 1. The emulator isn't very smart about emulated vs. standard memory. - * 'Emulated memory' access addresses should be checked for sanity. - * 'Normal memory' accesses may fault, and the caller must arrange to - * detect and handle reentrancy into the emulator via recursive faults. - * Accesses may be unaligned and may cross page boundaries. - * 2. If the access fails (cannot emulate, or a standard access faults) then - * it is up to the memop to propagate the fault to the guest VM via - * some out-of-band mechanism, unknown to the emulator. The memop signals - * failure by returning X86EMUL_PROPAGATE_FAULT to the emulator, which will - * then immediately bail. - * 3. Valid access sizes are 1, 2, 4 and 8 bytes. On x86/32 systems only - * cmpxchg8b_emulated need support 8-byte accesses. - * 4. The emulator cannot handle 64-bit mode emulation on an x86/32 system. - */ -/* Access completed successfully: continue emulation as normal. */ -#define X86EMUL_CONTINUE 0 -/* Access is unhandleable: bail from emulation and return error to caller. */ -#define X86EMUL_UNHANDLEABLE 1 -/* Terminate emulation but return success to the caller. */ -#define X86EMUL_PROPAGATE_FAULT 2 /* propagate a generated fault to guest */ -#define X86EMUL_RETRY_INSTR 3 /* retry the instruction for some reason */ -#define X86EMUL_CMPXCHG_FAILED 4 /* cmpxchg did not see expected value */ -#define X86EMUL_IO_NEEDED 5 /* IO is needed to complete emulation */ -#define X86EMUL_INTERCEPTED 6 /* Intercepted by nested VMCB/VMCS */ - -struct x86_emulate_ops { - /* - * read_std: Read bytes of standard (non-emulated/special) memory. - * Used for descriptor reading. - * @addr: [IN ] Linear address from which to read. - * @val: [OUT] Value read from memory, zero-extended to 'u_long'. - * @bytes: [IN ] Number of bytes to read from memory. - */ - int (*read_std)(struct x86_emulate_ctxt *ctxt, - unsigned long addr, void *val, - unsigned int bytes, - struct x86_exception *fault); - - /* - * write_std: Write bytes of standard (non-emulated/special) memory. - * Used for descriptor writing. - * @addr: [IN ] Linear address to which to write. - * @val: [OUT] Value write to memory, zero-extended to 'u_long'. - * @bytes: [IN ] Number of bytes to write to memory. - */ - int (*write_std)(struct x86_emulate_ctxt *ctxt, - unsigned long addr, void *val, unsigned int bytes, - struct x86_exception *fault); - /* - * fetch: Read bytes of standard (non-emulated/special) memory. - * Used for instruction fetch. - * @addr: [IN ] Linear address from which to read. - * @val: [OUT] Value read from memory, zero-extended to 'u_long'. - * @bytes: [IN ] Number of bytes to read from memory. - */ - int (*fetch)(struct x86_emulate_ctxt *ctxt, - unsigned long addr, void *val, unsigned int bytes, - struct x86_exception *fault); - - /* - * read_emulated: Read bytes from emulated/special memory area. - * @addr: [IN ] Linear address from which to read. - * @val: [OUT] Value read from memory, zero-extended to 'u_long'. - * @bytes: [IN ] Number of bytes to read from memory. - */ - int (*read_emulated)(struct x86_emulate_ctxt *ctxt, - unsigned long addr, void *val, unsigned int bytes, - struct x86_exception *fault); - - /* - * write_emulated: Write bytes to emulated/special memory area. - * @addr: [IN ] Linear address to which to write. - * @val: [IN ] Value to write to memory (low-order bytes used as - * required). - * @bytes: [IN ] Number of bytes to write to memory. - */ - int (*write_emulated)(struct x86_emulate_ctxt *ctxt, - unsigned long addr, const void *val, - unsigned int bytes, - struct x86_exception *fault); - - /* - * cmpxchg_emulated: Emulate an atomic (LOCKed) CMPXCHG operation on an - * emulated/special memory area. - * @addr: [IN ] Linear address to access. - * @old: [IN ] Value expected to be current at @addr. - * @new: [IN ] Value to write to @addr. - * @bytes: [IN ] Number of bytes to access using CMPXCHG. - */ - int (*cmpxchg_emulated)(struct x86_emulate_ctxt *ctxt, - unsigned long addr, - const void *old, - const void *new, - unsigned int bytes, - struct x86_exception *fault); - void (*invlpg)(struct x86_emulate_ctxt *ctxt, ulong addr); - - int (*pio_in_emulated)(struct x86_emulate_ctxt *ctxt, - int size, unsigned short port, void *val, - unsigned int count); - - int (*pio_out_emulated)(struct x86_emulate_ctxt *ctxt, - int size, unsigned short port, const void *val, - unsigned int count); - - bool (*get_segment)(struct x86_emulate_ctxt *ctxt, u16 *selector, - struct desc_struct *desc, u32 *base3, int seg); - void (*set_segment)(struct x86_emulate_ctxt *ctxt, u16 selector, - struct desc_struct *desc, u32 base3, int seg); - unsigned long (*get_cached_segment_base)(struct x86_emulate_ctxt *ctxt, - int seg); - void (*get_gdt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); - void (*get_idt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); - void (*set_gdt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); - void (*set_idt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); - ulong (*get_cr)(struct x86_emulate_ctxt *ctxt, int cr); - int (*set_cr)(struct x86_emulate_ctxt *ctxt, int cr, ulong val); - void (*set_rflags)(struct x86_emulate_ctxt *ctxt, ulong val); - int (*cpl)(struct x86_emulate_ctxt *ctxt); - int (*get_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong *dest); - int (*set_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong value); - int (*set_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data); - int (*get_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata); - int (*read_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc, u64 *pdata); - void (*halt)(struct x86_emulate_ctxt *ctxt); - void (*wbinvd)(struct x86_emulate_ctxt *ctxt); - int (*fix_hypercall)(struct x86_emulate_ctxt *ctxt); - void (*get_fpu)(struct x86_emulate_ctxt *ctxt); /* disables preempt */ - void (*put_fpu)(struct x86_emulate_ctxt *ctxt); /* reenables preempt */ - int (*intercept)(struct x86_emulate_ctxt *ctxt, - struct x86_instruction_info *info, - enum x86_intercept_stage stage); - - bool (*get_cpuid)(struct x86_emulate_ctxt *ctxt, - u32 *eax, u32 *ebx, u32 *ecx, u32 *edx); -}; - -typedef u32 __attribute__((vector_size(16))) sse128_t; - -/* Type, address-of, and value of an instruction's operand. */ -struct operand { - enum { OP_REG, OP_MEM, OP_IMM, OP_XMM, OP_NONE } type; - unsigned int bytes; - union { - unsigned long orig_val; - u64 orig_val64; - }; - union { - unsigned long *reg; - struct segmented_address { - ulong ea; - unsigned seg; - } mem; - unsigned xmm; - } addr; - union { - unsigned long val; - u64 val64; - char valptr[sizeof(unsigned long) + 2]; - sse128_t vec_val; - }; -}; - -struct fetch_cache { - u8 data[15]; - unsigned long start; - unsigned long end; -}; - -struct read_cache { - u8 data[1024]; - unsigned long pos; - unsigned long end; -}; - -struct x86_emulate_ctxt { - struct x86_emulate_ops *ops; - - /* Register state before/after emulation. */ - unsigned long eflags; - unsigned long eip; /* eip before instruction emulation */ - /* Emulated execution mode, represented by an X86EMUL_MODE value. */ - int mode; - - /* interruptibility state, as a result of execution of STI or MOV SS */ - int interruptibility; - - bool guest_mode; /* guest running a nested guest */ - bool perm_ok; /* do not check permissions if true */ - bool only_vendor_specific_insn; - - bool have_exception; - struct x86_exception exception; - - /* decode cache */ - u8 twobyte; - u8 b; - u8 intercept; - u8 lock_prefix; - u8 rep_prefix; - u8 op_bytes; - u8 ad_bytes; - u8 rex_prefix; - struct operand src; - struct operand src2; - struct operand dst; - bool has_seg_override; - u8 seg_override; - u64 d; - int (*execute)(struct x86_emulate_ctxt *ctxt); - int (*check_perm)(struct x86_emulate_ctxt *ctxt); - /* modrm */ - u8 modrm; - u8 modrm_mod; - u8 modrm_reg; - u8 modrm_rm; - u8 modrm_seg; - bool rip_relative; - unsigned long _eip; - /* Fields above regs are cleared together. */ - unsigned long regs[NR_VCPU_REGS]; - struct operand memop; - struct operand *memopp; - struct fetch_cache fetch; - struct read_cache io_read; - struct read_cache mem_read; -}; - -/* Repeat String Operation Prefix */ -#define REPE_PREFIX 0xf3 -#define REPNE_PREFIX 0xf2 - -/* Execution mode, passed to the emulator. */ -#define X86EMUL_MODE_REAL 0 /* Real mode. */ -#define X86EMUL_MODE_VM86 1 /* Virtual 8086 mode. */ -#define X86EMUL_MODE_PROT16 2 /* 16-bit protected mode. */ -#define X86EMUL_MODE_PROT32 4 /* 32-bit protected mode. */ -#define X86EMUL_MODE_PROT64 8 /* 64-bit (long) mode. */ - -/* any protected mode */ -#define X86EMUL_MODE_PROT (X86EMUL_MODE_PROT16|X86EMUL_MODE_PROT32| \ - X86EMUL_MODE_PROT64) - -/* CPUID vendors */ -#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541 -#define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163 -#define X86EMUL_CPUID_VENDOR_AuthenticAMD_edx 0x69746e65 - -#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ebx 0x69444d41 -#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574 -#define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273 - -#define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547 -#define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e -#define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69 - -enum x86_intercept_stage { - X86_ICTP_NONE = 0, /* Allow zero-init to not match anything */ - X86_ICPT_PRE_EXCEPT, - X86_ICPT_POST_EXCEPT, - X86_ICPT_POST_MEMACCESS, -}; - -enum x86_intercept { - x86_intercept_none, - x86_intercept_cr_read, - x86_intercept_cr_write, - x86_intercept_clts, - x86_intercept_lmsw, - x86_intercept_smsw, - x86_intercept_dr_read, - x86_intercept_dr_write, - x86_intercept_lidt, - x86_intercept_sidt, - x86_intercept_lgdt, - x86_intercept_sgdt, - x86_intercept_lldt, - x86_intercept_sldt, - x86_intercept_ltr, - x86_intercept_str, - x86_intercept_rdtsc, - x86_intercept_rdpmc, - x86_intercept_pushf, - x86_intercept_popf, - x86_intercept_cpuid, - x86_intercept_rsm, - x86_intercept_iret, - x86_intercept_intn, - x86_intercept_invd, - x86_intercept_pause, - x86_intercept_hlt, - x86_intercept_invlpg, - x86_intercept_invlpga, - x86_intercept_vmrun, - x86_intercept_vmload, - x86_intercept_vmsave, - x86_intercept_vmmcall, - x86_intercept_stgi, - x86_intercept_clgi, - x86_intercept_skinit, - x86_intercept_rdtscp, - x86_intercept_icebp, - x86_intercept_wbinvd, - x86_intercept_monitor, - x86_intercept_mwait, - x86_intercept_rdmsr, - x86_intercept_wrmsr, - x86_intercept_in, - x86_intercept_ins, - x86_intercept_out, - x86_intercept_outs, - - nr_x86_intercepts -}; - -/* Host execution mode. */ -#if defined(CONFIG_X86_32) -#define X86EMUL_MODE_HOST X86EMUL_MODE_PROT32 -#elif defined(CONFIG_X86_64) -#define X86EMUL_MODE_HOST X86EMUL_MODE_PROT64 -#endif - -int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len); -bool x86_page_table_writing_insn(struct x86_emulate_ctxt *ctxt); -#define EMULATION_FAILED -1 -#define EMULATION_OK 0 -#define EMULATION_RESTART 1 -#define EMULATION_INTERCEPTED 2 -int x86_emulate_insn(struct x86_emulate_ctxt *ctxt); -int emulator_task_switch(struct x86_emulate_ctxt *ctxt, - u16 tss_selector, int idt_index, int reason, - bool has_error_code, u32 error_code); -int emulate_int_real(struct x86_emulate_ctxt *ctxt, int irq); -#endif /* _ASM_X86_KVM_X86_EMULATE_H */ |