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Date: Mon, 17 Sep 2007 10:31:38 +0200 From: Avi Kivity <avi@...ranet.com> To: kvm-devel@...ts.sourceforge.net Cc: linux-kernel@...r.kernel.org, Nitin A Kamble <nitin.a.kamble@...el.com> Subject: [PATCH 056/104] KVM: x86 emulator: implement 'and $imm, %{al|ax|eax}' From: Nitin A Kamble <nitin.a.kamble@...el.com> 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@...el.com> Signed-off-by: Avi Kivity <avi@...ranet.com> --- 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 b4f439c..2b94d16 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); -- 1.5.3 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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