Messages in this thread Patch in this message | | | From | Avi Kivity <> | Subject | [PATCH 057/104] KVM: x86 emulator: implement 'jmp rel' instruction (opcode 0xe9) | Date | Mon, 17 Sep 2007 10:31:39 +0200 |
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From: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com> --- 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 2b94d16..fa7aa27 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 */ -- 1.5.3 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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