From 55bebde45ec252295b08cb3990f15df2228dbf0e Mon Sep 17 00:00:00 2001 From: Nitin A Kamble Date: Sat, 15 Sep 2007 10:25:41 +0300 Subject: [PATCH] KVM: X86 emulator: jump conditional short Implement emulation of more jump conditional instructions jcc shortrel opcodes: 0x70 - 0x7f Signed-off-by: Nitin A Kamble Signed-off-by: Avi Kivity --- drivers/kvm/x86_emulate.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index ba53e59f558a..57f1a5ad0110 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -111,8 +111,12 @@ static u8 opcode_table[256] = { 0, 0, ImplicitOps|Mov, 0, SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* insb, insw/insd */ SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* outsb, outsw/outsd */ - /* 0x70 - 0x7F */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + /* 0x70 - 0x77 */ + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, + /* 0x78 - 0x7F */ + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, + ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps, /* 0x80 - 0x87 */ ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImm | ModRM, ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM, @@ -1268,6 +1272,13 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) ) == 0) return -1; return 0; + case 0x70 ... 0x7f: /* jcc (short) */ { + int rel = insn_fetch(s8, 1, _eip); + + if (test_cc(b, _eflags)) + JMP_REL(rel); + break; + } case 0x9c: /* pushf */ src.val = (unsigned long) _eflags; goto push; -- GitLab