a4d4a7c188
KVM: x86 emulator: fix group 11 decoding for reg != 0
...
These are all undefined.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:53 +02:00
b9eac5f4d1
KVM: x86 emulator: use single stage decoding for mov instructions
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:52 +02:00
6230f7fc04
KVM: x86 emulator: simplify ALU opcode block decode further
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The ALU opcode block is very regular; introduce D6ALU() to define decode
flags for 6 instructions at a time.
Suggested by Paolo Bonzini.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:43 +02:00
34d1f4905e
KVM: x86 emulator: trap and propagate #DE from DIV and IDIV
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Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:42 +02:00
f6b3597bde
KVM: x86 emulator: add macros for executing instructions that may trap
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Like DIV and IDIV.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:41 +02:00
739ae40606
KVM: x86 emulator: simplify instruction decode flags for opcodes 0F 00-FF
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:41 +02:00
d269e3961a
KVM: x86 emulator: simplify instruction decode flags for opcodes E0-FF
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:40 +02:00
d2c6c7adb1
KVM: x86 emulator: simplify instruction decode flags for opcodes C0-DF
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:39 +02:00
50748613d1
KVM: x86 emulator: simplify instruction decode flags for opcodes A0-AF
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:38 +02:00
76e8e68d44
KVM: x86 emulator: simplify instruction decode flags for opcodes 80-8F
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:38 +02:00
48fe67b5f7
KVM: x86 emulator: simplify string instruction decode flags
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:37 +02:00
5315fbb223
KVM: x86 emulator: simplify ALU block (opcodes 00-3F) decode flags
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Use the new byte/word dual opcode decode.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:36 +02:00
8d8f4e9f66
KVM: x86 emulator: support byte/word opcode pairs
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Many x86 instructions come in byte and word variants distinguished with bit
0 of the opcode. Add macros to aid in defining them.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:35 +02:00
081bca0e6b
KVM: x86 emulator: refuse SrcMemFAddr (e.g. LDS) with register operand
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SrcMemFAddr is not defined with the modrm operand designating a register
instead of a memory address.
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:35 +02:00
d2ddd1c483
KVM: x86 emulator: get rid of "restart" in emulation context.
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x86_emulate_insn() will return 1 if instruction can be restarted
without re-entering a guest.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:34 +02:00
3e2f65d57a
KVM: x86 emulator: move string instruction completion check into separate function
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Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:33 +02:00
6e2fb2cadd
KVM: x86 emulator: Rename variable that shadows another local variable.
...
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:32 +02:00
cc4feed57f
KVM: x86 emulator: add CALL FAR instruction emulation (opcode 9a)
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Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:31 +02:00
e4abac67b7
KVM: x86 emulator: add JrCXZ instruction emulation
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Add JrCXZ instruction emulation (opcode 0xe3)
Used by FreeBSD boot loader.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:20 +02:00
09b5f4d3c4
KVM: x86 emulator: add LDS/LES/LFS/LGS/LSS instruction emulation
...
Add LDS/LES/LFS/LGS/LSS instruction emulation.
(opcode 0xc4, 0xc5, 0x0f 0xb2, 0x0f 0xb4~0xb5)
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-10-24 10:51:20 +02:00
6142914280
KVM: x86 emulator: implement CWD (opcode 99)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:16 +02:00
d46164dbd9
KVM: x86 emulator: implement IMUL REG, R/M, IMM (opcode 69)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:16 +02:00
7db41eb762
KVM: x86 emulator: add Src2Imm decoding
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Needed for 3-operand IMUL.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:15 +02:00
39f21ee546
KVM: x86 emulator: consolidate immediate decode into a function
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:14 +02:00
48bb5d3c40
KVM: x86 emulator: implement RDTSC (opcode 0F 31)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:14 +02:00
7077aec0bc
KVM: x86 emulator: remove SrcImplicit
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Useless.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:13 +02:00
5c82aa2998
KVM: x86 emulator: implement IMUL REG, R/M (opcode 0F AF)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:12 +02:00
f3a1b9f496
KVM: x86 emulator: implement IMUL REG, R/M, imm8 (opcode 6B)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:12 +02:00
40ece7c729
KVM: x86 emulator: implement RET imm16 (opcode C2)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:12 +02:00
b250e60589
KVM: x86 emulator: add SrcImmU16 operand type
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Used for RET NEAR instructions.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:12 +02:00
0ef753b8c3
KVM: x86 emulator: implement CALL FAR (FF /3)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:12 +02:00
7af04fc05c
KVM: x86 emulator: implement DAS (opcode 2F)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:11 +02:00
fb2c264105
KVM: x86 emulator: Use a register for ____emulate_2op() destination
...
Most x86 two operand instructions allow the destination to be a memory operand,
but IMUL (for example) requires that the destination be a register. Change
____emulate_2op() to take a register for both source and destination so we
can invoke IMUL.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:11 +02:00
b3b3d25a12
KVM: x86 emulator: pass destination type to ____emulate_2op()
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We'll need it later so we can use a register for the destination.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:11 +02:00
f2f3184534
KVM: x86 emulator: add LOOP/LOOPcc instruction emulation
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Add LOOP/LOOPcc instruction emulation (opcode 0xe0~0xe2).
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:11 +02:00
e8b6fa70e3
KVM: x86 emulator: add CBW/CWDE/CDQE instruction emulation
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Add CBW/CWDE/CDQE instruction emulation.(opcode 0x98)
Used by FreeBSD's boot loader.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:11 +02:00
0fa6ccbd28
KVM: x86 emulator: fix REPZ/REPNZ termination condition
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EFLAGS.ZF needs to be checked after each iteration, not before.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:10 +02:00
f6b33fc504
KVM: x86 emulator: implement SCAS (opcodes AE, AF)
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Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:10 +02:00
5c56e1cf7a
KVM: x86 emulator: fix INTn emulation not pushing EFLAGS and CS
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emulate_push() only schedules a push; it doesn't actually push anything.
Call writeback() to flush out the write.
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:09 +02:00
a13a63faa6
KVM: x86 emulator: remove dup code of in/out instruction
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Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:09 +02:00
41167be544
KVM: x86 emulator: change OUT instruction to use dst instead of src
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Change OUT instruction to use dst instead of src, so we can
reuse those code for all out instructions.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:09 +02:00
943858e275
KVM: x86 emulator: introduce DstImmUByte for dst operand decode
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Introduce DstImmUByte for dst operand decode, which
will be used for out instruction.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:09 +02:00
c483c02ad3
KVM: x86 emulator: remove useless label from x86_emulate_insn()
...
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:09 +02:00
ee45b58efe
KVM: x86 emulator: add setcc instruction emulation
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Add setcc instruction emulation (opcode 0x0f 0x90~0x9f)
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:08 +02:00
92f738a52b
KVM: x86 emulator: add XADD instruction emulation
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Add XADD instruction emulation (opcode 0x0f 0xc0~0xc1)
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:06 +02:00
31be40b398
KVM: x86 emulator: put register operand write back to a function
...
Introduce function write_register_operand() to write back the
register operand.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:06 +02:00
d9574a25af
KVM: x86 emulator: add bsf/bsr instruction emulation
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Add bsf/bsr instruction emulation (opcode 0x0f 0xbc~0xbd)
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:04 +02:00
8c5eee30a9
KVM: x86 emulator: Fix emulate_grp3 return values
...
This patch lets emulate_grp3() return X86EMUL_* return codes instead
of hardcoded ones.
Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:04 +02:00
3f9f53b0d5
KVM: x86 emulator: Add unary mul, imul, div, and idiv instructions
...
This adds unary mul, imul, div, and idiv instructions (group 3 r/m 4-7).
Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:04 +02:00
ba7ff2b76d
KVM: x86 emulator: mask group 8 instruction as BitOp
...
Mask group 8 instruction as BitOp, so we can share the
code for adjust the source operand.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2010-10-24 10:51:03 +02:00
Avi Kivity