diff options
Diffstat (limited to 'sys/amd64/vmm/vmm_instruction_emul.c')
| -rw-r--r-- | sys/amd64/vmm/vmm_instruction_emul.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sys/amd64/vmm/vmm_instruction_emul.c b/sys/amd64/vmm/vmm_instruction_emul.c index 7172365..c83f3e0 100644 --- a/sys/amd64/vmm/vmm_instruction_emul.c +++ b/sys/amd64/vmm/vmm_instruction_emul.c @@ -178,14 +178,20 @@ static const struct vie_op one_byte_opcodes[256] = { .op_byte = 0x23, .op_type = VIE_OP_TYPE_AND, }, + [0x80] = { + /* Group 1 extended opcode */ + .op_byte = 0x80, + .op_type = VIE_OP_TYPE_GROUP1, + .op_flags = VIE_OP_F_IMM8, + }, [0x81] = { - /* XXX Group 1 extended opcode */ + /* Group 1 extended opcode */ .op_byte = 0x81, .op_type = VIE_OP_TYPE_GROUP1, .op_flags = VIE_OP_F_IMM, }, [0x83] = { - /* XXX Group 1 extended opcode */ + /* Group 1 extended opcode */ .op_byte = 0x83, .op_type = VIE_OP_TYPE_GROUP1, .op_flags = VIE_OP_F_IMM8, @@ -1066,9 +1072,13 @@ emulate_cmp(void *vm, int vcpuid, uint64_t gpa, struct vie *vie, rflags2 = getcc(size, op1, op2); break; + case 0x80: case 0x81: case 0x83: /* + * 80 /7 cmp r/m8, imm8 + * REX + 80 /7 cmp r/m8, imm8 + * * 81 /7 cmp r/m16, imm16 * 81 /7 cmp r/m32, imm32 * REX.W + 81 /7 cmp r/m64, imm32 sign-extended to 64 @@ -1084,6 +1094,8 @@ emulate_cmp(void *vm, int vcpuid, uint64_t gpa, struct vie *vie, * the status flags. * */ + if (vie->op.op_byte == 0x80) + size = 1; /* get the first operand */ error = memread(vm, vcpuid, gpa, &op1, size, arg); |
