KVM: x86 emulator: call near

Implement emulation of instruction
	opcode: 0xe8
	call (near)

Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 4fc2da6..9f1772f 100644 (file)
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -150,7 +150,7 @@ static u8 opcode_table[256] = {
        /* 0xE0 - 0xE7 */
        0, 0, 0, 0, 0, 0, 0, 0,
        /* 0xE8 - 0xEF */
-       0, SrcImm|ImplicitOps, 0, SrcImmByte|ImplicitOps, 0, 0, 0, 0,
+       ImplicitOps, SrcImm|ImplicitOps, 0, SrcImmByte|ImplicitOps, 0, 0, 0, 0,
        /* 0xF0 - 0xF7 */
        0, 0, 0, 0,
        ImplicitOps, 0,
@@ -1033,6 +1033,26 @@ push:
        case 0xd2 ... 0xd3:     /* Grp2 */
                src.val = _regs[VCPU_REGS_RCX];
                goto grp2;
+       case 0xe8: /* call (near) */ {
+               long int rel;
+               switch (op_bytes) {
+               case 2:
+                       rel = insn_fetch(s16, 2, _eip);
+                       break;
+               case 4:
+                       rel = insn_fetch(s32, 4, _eip);
+                       break;
+               case 8:
+                       rel = insn_fetch(s64, 8, _eip);
+                       break;
+               default:
+                       DPRINTF("Call: Invalid op_bytes\n");
+                       goto cannot_emulate;
+               }
+               src.val = (unsigned long) _eip;
+               JMP_REL(rel);
+               goto push;
+       }
        case 0xe9: /* jmp rel */
        case 0xeb: /* jmp rel short */
                JMP_REL(src.val);