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| author | Nitin A Kamble <nitin.a.kamble@intel.com> | 2007-08-17 14:17:41 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:23 +0200 |
| commit | 19eb938e0115693414a83b6bde2b67896bd9953a (patch) | |
| tree | 16174b87dc16d32d0efe19162acba0db9ee6e190 | |
| parent | KVM: Communicate cr8 changes to userspace (diff) | |
| download | linux-19eb938e0115693414a83b6bde2b67896bd9953a.tar.xz linux-19eb938e0115693414a83b6bde2b67896bd9953a.zip | |
KVM: x86 emulator: implement 'and $imm, %{al|ax|eax}'
Implement emulation of instruction
and al imm8 (opcode 0x24)
and ax/eax imm16/imm32 (opcode 0x25)
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index b4f439cfc66e..2b94d16e9d23 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -83,7 +83,7 @@ static u8 opcode_table[256] = { /* 0x20 - 0x27 */ ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM, ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM, - 0, 0, 0, 0, + SrcImmByte, SrcImm, 0, 0, /* 0x28 - 0x2F */ ByteOp | DstMem | SrcReg | ModRM, DstMem | SrcReg | ModRM, ByteOp | DstReg | SrcMem | ModRM, DstReg | SrcMem | ModRM, @@ -882,10 +882,27 @@ done_prefixes: sbb: /* sbb */ emulate_2op_SrcV("sbb", src, dst, _eflags); break; - case 0x20 ... 0x25: + case 0x20 ... 0x23: and: /* and */ emulate_2op_SrcV("and", src, dst, _eflags); break; + case 0x24: /* and al imm8 */ + dst.type = OP_REG; + dst.ptr = &_regs[VCPU_REGS_RAX]; + dst.val = *(u8 *)dst.ptr; + dst.bytes = 1; + dst.orig_val = dst.val; + goto and; + case 0x25: /* and ax imm16, or eax imm32 */ + dst.type = OP_REG; + dst.bytes = op_bytes; + dst.ptr = &_regs[VCPU_REGS_RAX]; + if (op_bytes == 2) + dst.val = *(u16 *)dst.ptr; + else + dst.val = *(u32 *)dst.ptr; + dst.orig_val = dst.val; + goto and; case 0x28 ... 0x2d: sub: /* sub */ emulate_2op_SrcV("sub", src, dst, _eflags); |