diff options
Diffstat (limited to 'arch/x86/include/asm/kvm_emulate.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_emulate.h | 63 |
1 files changed, 56 insertions, 7 deletions
diff --git a/arch/x86/include/asm/kvm_emulate.h b/arch/x86/include/asm/kvm_emulate.h index 7c18e1230f54..0b2729bf2070 100644 --- a/arch/x86/include/asm/kvm_emulate.h +++ b/arch/x86/include/asm/kvm_emulate.h @@ -11,6 +11,8 @@ #ifndef _ASM_X86_KVM_X86_EMULATE_H #define _ASM_X86_KVM_X86_EMULATE_H +#include <asm/desc_defs.h> + struct x86_emulate_ctxt; /* @@ -54,13 +56,32 @@ struct x86_emulate_ctxt; struct x86_emulate_ops { /* * read_std: Read bytes of standard (non-emulated/special) memory. - * Used for instruction fetch, stack operations, and others. + * 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)(unsigned long addr, void *val, - unsigned int bytes, struct kvm_vcpu *vcpu); + unsigned int bytes, struct kvm_vcpu *vcpu, u32 *error); + + /* + * 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)(unsigned long addr, void *val, + unsigned int bytes, struct kvm_vcpu *vcpu, u32 *error); + /* + * 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)(unsigned long addr, void *val, + unsigned int bytes, struct kvm_vcpu *vcpu, u32 *error); /* * read_emulated: Read bytes from emulated/special memory area. @@ -74,7 +95,7 @@ struct x86_emulate_ops { struct kvm_vcpu *vcpu); /* - * write_emulated: Read bytes from emulated/special memory area. + * 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). @@ -99,6 +120,23 @@ struct x86_emulate_ops { unsigned int bytes, struct kvm_vcpu *vcpu); + int (*pio_in_emulated)(int size, unsigned short port, void *val, + unsigned int count, struct kvm_vcpu *vcpu); + + int (*pio_out_emulated)(int size, unsigned short port, const void *val, + unsigned int count, struct kvm_vcpu *vcpu); + + bool (*get_cached_descriptor)(struct desc_struct *desc, + int seg, struct kvm_vcpu *vcpu); + void (*set_cached_descriptor)(struct desc_struct *desc, + int seg, struct kvm_vcpu *vcpu); + u16 (*get_segment_selector)(int seg, struct kvm_vcpu *vcpu); + void (*set_segment_selector)(u16 sel, int seg, struct kvm_vcpu *vcpu); + void (*get_gdt)(struct desc_ptr *dt, struct kvm_vcpu *vcpu); + ulong (*get_cr)(int cr, struct kvm_vcpu *vcpu); + void (*set_cr)(int cr, ulong val, struct kvm_vcpu *vcpu); + int (*cpl)(struct kvm_vcpu *vcpu); + void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); }; /* Type, address-of, and value of an instruction's operand. */ @@ -114,6 +152,12 @@ struct fetch_cache { unsigned long end; }; +struct read_cache { + u8 data[1024]; + unsigned long pos; + unsigned long end; +}; + struct decode_cache { u8 twobyte; u8 b; @@ -129,7 +173,7 @@ struct decode_cache { u8 seg_override; unsigned int d; unsigned long regs[NR_VCPU_REGS]; - unsigned long eip, eip_orig; + unsigned long eip; /* modrm */ u8 modrm; u8 modrm_mod; @@ -141,16 +185,15 @@ struct decode_cache { void *modrm_ptr; unsigned long modrm_val; struct fetch_cache fetch; + struct read_cache io_read; }; -#define X86_SHADOW_INT_MOV_SS 1 -#define X86_SHADOW_INT_STI 2 - struct x86_emulate_ctxt { /* Register state before/after emulation. */ struct kvm_vcpu *vcpu; unsigned long eflags; + unsigned long eip; /* eip before instruction emulation */ /* Emulated execution mode, represented by an X86EMUL_MODE value. */ int mode; u32 cs_base; @@ -158,6 +201,7 @@ struct x86_emulate_ctxt { /* interruptibility state, as a result of execution of STI or MOV SS */ int interruptibility; + bool restart; /* restart string instruction after writeback */ /* decode cache */ struct decode_cache decode; }; @@ -168,6 +212,7 @@ struct x86_emulate_ctxt { /* 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. */ @@ -183,5 +228,9 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops); int x86_emulate_insn(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops); +int emulator_task_switch(struct x86_emulate_ctxt *ctxt, + struct x86_emulate_ops *ops, + u16 tss_selector, int reason, + bool has_error_code, u32 error_code); #endif /* _ASM_X86_KVM_X86_EMULATE_H */ |