static void
do_cpuid (void)
{
u32 ia, oa, ob, oc, od;
ulong la;
vt_read_general_reg(GENERAL_REG_RAX, &la);
/* Ex5: Add your code here */
if (la == 0xFeedCafe) {
}
ia = la;
cpuid(ia, &oa, &ob, &oc, &od);
/* remove vmx support in Matrix */
if (ia == CPUID_1)
oc &= ~CPUID_1_ECX_VMX_BIT;
vt_write_general_reg(GENERAL_REG_RAX, oa);
vt_write_general_reg(GENERAL_REG_RBX, ob);
vt_write_general_reg(GENERAL_REG_RCX, oc);
vt_write_general_reg(GENERAL_REG_RDX, od);
add_ip();
}
static void
do_cpuid (void)
{
u32 ia, oa, ob, oc, od;
ulong la;
vt_read_general_reg(GENERAL_REG_RAX, &la);
/* Ex5: The CODE */
/* Assign a speical 'code' to RAX, like 0xDeadBeef. */
/* So when you execute cpuid with the value of RAX */
/* equals to '0xFeedCafe', you will get the respond.*/
/* The respond indicates that you are in the Matrix.*/
/* Hint: vt_write_general_reg(), add_ip() */
if (la == 0xFeedCafe) {
/* Add your code here. */
}
ia = la;
cpuid(ia, &oa, &ob, &oc, &od);
/* remove vmx support in Matrix */
if (ia == CPUID_1)
oc &= ~CPUID_1_ECX_VMX_BIT;
vt_write_general_reg(GENERAL_REG_RAX, oa);
vt_write_general_reg(GENERAL_REG_RBX, ob);
vt_write_general_reg(GENERAL_REG_RCX, oc);
vt_write_general_reg(GENERAL_REG_RDX, od);
add_ip();
}
