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Date: Sun, 8 Jul 2007 14:54:30 +0300 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>, Avi Kivity <avi@...ranet.com> Subject: [PATCH 01/20] KVM: Implement emulation of "pop reg" instruction (opcode 0x58-0x5f) From: Nitin A Kamble <nitin.a.kamble@...el.com> For use in real mode. Signed-off-by: Nitin A Kamble <nitin.a.kamble@...el.com> Signed-off-by: Avi Kivity <avi@...ranet.com> --- drivers/kvm/x86_emulate.c | 17 +++++++++++++++-- 1 files changed, 15 insertions(+), 2 deletions(-) diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index a4a8481..46c3806 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -98,8 +98,11 @@ static u8 opcode_table[256] = { 0, 0, 0, 0, /* 0x40 - 0x4F */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - /* 0x50 - 0x5F */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + /* 0x50 - 0x57 */ + 0, 0, 0, 0, 0, 0, 0, 0, + /* 0x58 - 0x5F */ + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, /* 0x60 - 0x6F */ 0, 0, 0, DstReg | SrcMem32 | ModRM | Mov /* movsxd (x86/64) */ , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, @@ -1153,6 +1156,16 @@ special_insn: case 0xf4: /* hlt */ ctxt->vcpu->halt_request = 1; goto done; + case 0x58 ... 0x5f: /* pop reg */ + dst.ptr = (unsigned long *)&_regs[b & 0x7]; + + if ((rc = ops->read_std(register_address(ctxt->ss_base, + _regs[VCPU_REGS_RSP]), dst.ptr, op_bytes, ctxt)) != 0) + goto done; + + register_address_increment(_regs[VCPU_REGS_RSP], dst.bytes); + dst.orig_val = dst.val; /* Disable writeback. */ + break; } goto writeback; -- 1.5.2.2 - 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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