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path: root/arch/x86/kvm/emulate.c
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2010-10-24KVM: x86 emulator: move ByteOp and Dst back to bits 0:3Avi Kivity
Now that the group index no longer exists, the space is free. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: drop support for old-style groupsAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 9 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 8 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 7 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 5 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 4 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 3 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 1A to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: convert group 1 to new styleAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: allow specifying group directly in opcodeAvi Kivity
Instead of having a group number, store the group table pointer directly in the opcode. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: reserve group code 0Avi Kivity
We'll be using that to distinguish between new-style and old-style groups. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: move group tables to topAvi Kivity
No code changes. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: Add wrappers for easily defining opcodesAvi Kivity
Once 'struct opcode' grows, its initializer will become more complicated. Wrap the simple initializers in a D() macro, and replace the empty initializers with an even simpler N macro. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: introduce 'struct opcode'Avi Kivity
This will hold all the information known about the opcode. Currently, this is just the decode flags. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: drop parentheses in repreat macrosAvi Kivity
The parenthese make is impossible to use the macros with initializers that require braces. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: Add IRET instructionMohammed Gamal
Ths patch adds IRET instruction (opcode 0xcf). Currently, only IRET in real mode is emulated. Protected mode support is to be added later if needed. Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Reviewed-by: Avi Kivity <avi@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: unify the two Group 3 variantsAvi Kivity
Use just one group table for byte (F6) and word (F7) opcodes. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: Allow LOCK prefix for NEG and NOTAvi Kivity
Opcodes F6/2, F6/3, F7/2, F7/3. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: simplify Group 1 decodingAvi Kivity
Move operand decoding to the opcode table, keep lock decoding in the group table. This allows us to get consolidate the four variants of Group 1 into one group. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: mix decode bits from opcode and group decode tablesAvi Kivity
Allow bits that are common to all members of a group to be specified in the opcode table instead of the group table. This allows some simplification of the decode tables. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: add Undefined decode flagAvi Kivity
Add a decode flag to indicate the instruction is invalid. Will come in useful later, when we mix decode bits from the opcode and group table. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: Make group storage bits separate from operand bitsAvi Kivity
Currently group bits are stored in bits 0:7, where operand bits are stored. Make group bits be 0:3, and move the existing bits 0:3 to 16:19, so we can mix group and operand bits. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: consolidate Jcc rel32 decodingAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: consolidate CMOVcc decodingAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: consolidate MOV reg, imm decodingAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: consolidate Jcc rel8 decodingAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: consolidate push/pop reg decodingAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: consolidate inc/dec reg decodingAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: add macros for repetitive instructionsAvi Kivity
Some instructions are repetitive in the opcode space, add macros for consolidating them. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24KVM: x86 emulator: fix handling for unemulated instructionsAvi Kivity
If an instruction is present in the decode tables but not in the execution switch, it will be emulated as a NOP. An example is IRET (0xcf). Fix by adding default: labels to the execution switches. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-09-08KVM: x86 emulator: fix regression with cmpxchg8b on i386 hostsAvi Kivity
operand::val and operand::orig_val are 32-bit on i386, whereas cmpxchg8b operands are 64-bit. Fix by adding val64 and orig_val64 union members to struct operand, and using them where needed. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-02KVM: x86: emulator: inc/dec can have lock prefixGleb Natapov
Mark inc (0xfe/0 0xff/0) and dec (0xfe/1 0xff/1) as lock prefix capable. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-02KVM: x86 emulator: re-implementing 'mov AL,moffs' instruction decodingWei Yongjun
This patch change to use DstAcc for decoding 'mov AL, moffs' and introduced SrcAcc for decoding 'mov moffs, AL'. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-02KVM: x86 emulator: fix cli/sti instruction emulationWei Yongjun
If IOPL check fail, the cli/sti emulate GP and then we should skip writeback since the default write OP is OP_REG. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-02KVM: x86 emulator: fix 'mov rm,sreg' instruction decodingWei Yongjun
The source operand of 'mov rm,sreg' is segment register, not general-purpose register, so remove SrcReg from decoding. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-02KVM: x86 emulator: fix 'and AL,imm8' instruction decodingWei Yongjun
'and AL,imm8' should be mask as ByteOp, otherwise the dest operand length will no correct and we may fill the full EAX when writeback. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-02KVM: x86 emulator: fix the comment of out instructionWei Yongjun
Fix the comment of out instruction, using the same style as the other instructions. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-02KVM: x86 emulator: fix 'mov sreg,rm16' instruction decodingWei Yongjun
Memory reads for 'mov sreg,rm16' should be 16 bits only. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-01KVM: VMX: Execute WBINVD to keep data consistency with assigned devicesSheng Yang
Some guest device driver may leverage the "Non-Snoop" I/O, and explicitly WBINVD or CLFLUSH to a RAM space. Since migration may occur before WBINVD or CLFLUSH, we need to maintain data consistency either by: 1: flushing cache (wbinvd) when the guest is scheduled out if there is no wbinvd exit, or 2: execute wbinvd on all dirty physical CPUs when guest wbinvd exits. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-01KVM: x86 emulator: fix group3 instruction decodingWei Yongjun
Group 3 instruction with ModRM reg field as 001 is defined as test instruction under AMD arch, and emulate_grp3() is ready for emulate it, so fix the decoding. static inline int emulate_grp3(...) { ... switch (c->modrm_reg) { case 0 ... 1: /* test */ emulate_2op_SrcV("test", c->src, c->dst, ctxt->eflags); ... } Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-01KVM: x86 emulator: fix pusha instruction emulationWei Yongjun
emulate pusha instruction only writeback the last EDI register, but the other registers which need to be writeback is ignored. This patch fixed it. Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-01KVM: Update Red Hat copyrightsAvi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-01KVM: x86 emulator: Add missing decoder flags for xor instructionsMohammed Gamal
This adds missing decoder flags for xor instructions (opcodes 0x34 - 0x35) Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-01KVM: x86 emulator: Add missing decoder flags for sub instructionMohammed Gamal
This adds missing decoder flags for sub instructions (opcodes 0x2c - 0x2d) Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-01KVM: x86 emulator: Add test acc, imm instruction (opcodes 0xA8 - 0xA9)Mohammed Gamal
This adds test acc, imm instruction to the x86 emulator Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-08-01KVM: x86 emulator: do not inject exception directly into vcpuGleb Natapov
Return exception as a result of instruction emulation and handle injection in KVM code. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-01KVM: x86 emulator: move interruptibility state tracking out of emulatorGleb Natapov
Emulator shouldn't access vcpu directly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-01KVM: x86 emulator: handle shadowed registers outside emulatorGleb Natapov
Emulator shouldn't access vcpu directly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2010-08-01KVM: x86 emulator: use shadowed register in emulate_sysexit()Gleb Natapov
emulate_sysexit() should use shadowed registers copy instead of looking into vcpu state directly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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