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KVM: X86 emulator: jump conditional short

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Implement emulation of more jump conditional instructions
    jcc shortrel
    opcodes: 0x70 - 0x7f

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Nitin A Kamble 2007-09-15 10:25:41 +03:00 committed by Avi Kivity
parent bbe9abbdac
commit 55bebde45e
1 changed files with 13 additions and 2 deletions
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15
drivers/kvm/x86_emulate.c
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@ -111,8 +111,12 @@ static u8 opcode_table[256] = {
0, 0, ImplicitOps|Mov, 0, 0, 0, ImplicitOps|Mov, 0,
SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* insb, insw/insd */ SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* insb, insw/insd */
SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* outsb, outsw/outsd */ SrcNone | ByteOp | ImplicitOps, SrcNone | ImplicitOps, /* outsb, outsw/outsd */
/* 0x70 - 0x7F */ /* 0x70 - 0x77 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
/* 0x78 - 0x7F */
ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
ImplicitOps, ImplicitOps, ImplicitOps, ImplicitOps,
/* 0x80 - 0x87 */ /* 0x80 - 0x87 */
ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImm | ModRM, ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImm | ModRM,
ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM, ByteOp | DstMem | SrcImm | ModRM, DstMem | SrcImmByte | ModRM,
@ -1268,6 +1272,13 @@ special_insn:
) == 0) ) == 0)
return -1; return -1;
return 0; 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 */ case 0x9c: /* pushf */
src.val = (unsigned long) _eflags; src.val = (unsigned long) _eflags;
goto push; goto push;