diff options
| author | Nitin A Kamble <nitin.a.kamble@intel.com> | 2007-08-19 11:00:36 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 10:18:24 +0200 |
| commit | 098c937ba30acc5b7dcb6a4ad7cc8d63c7117546 (patch) | |
| tree | ce611f0ff8ebad545c6664c25602b75cfe9605a7 /drivers | |
| parent | 19eb938e0115693414a83b6bde2b67896bd9953a (diff) | |
KVM: x86 emulator: implement 'jmp rel' instruction (opcode 0xe9)
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index 2b94d16e9d2..fa7aa278956 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -145,8 +145,10 @@ static u8 opcode_table[256] = { 0, 0, 0, 0, /* 0xD8 - 0xDF */ 0, 0, 0, 0, 0, 0, 0, 0, - /* 0xE0 - 0xEF */ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + /* 0xE0 - 0xE7 */ + 0, 0, 0, 0, 0, 0, 0, 0, + /* 0xE8 - 0xEF */ + 0, SrcImm|ImplicitOps, 0, 0, 0, 0, 0, 0, /* 0xF0 - 0xF7 */ 0, 0, 0, 0, ImplicitOps, 0, @@ -447,6 +449,12 @@ struct operand { (((reg) + _inc) & ((1UL << (ad_bytes << 3)) - 1)); \ } while (0) +#define JMP_REL(rel) \ + do { \ + _eip += (int)(rel); \ + _eip = ((op_bytes == 2) ? (uint16_t)_eip : (uint32_t)_eip); \ + } while (0) + /* * Given the 'reg' portion of a ModRM byte, and a register block, return a * pointer into the block that addresses the relevant register. @@ -1023,6 +1031,10 @@ done_prefixes: case 0xd2 ... 0xd3: /* Grp2 */ src.val = _regs[VCPU_REGS_RCX]; goto grp2; + case 0xe9: /* jmp rel */ + JMP_REL(src.val); + no_wb = 1; /* Disable writeback. */ + break; case 0xf6 ... 0xf7: /* Grp3 */ switch (modrm_reg) { case 0 ... 1: /* test */ |