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>

1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 4fc2da6aae7d..9f1772fd7480 100644
--- 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);