/* Same as SVM */
static int update_map(struct v3_vm_info * vm, uint16_t port, int hook_read, int hook_write) {
- uchar_t * bitmap = (uint8_t *)(vm->io_map.arch_data);
+ uint8_t * bitmap = (uint8_t *)(vm->io_map.arch_data);
int major = port / 8;
int minor = port % 8;
PrintDebug("IN of %d bytes on port %d (0x%x)\n", read_size, io_qual.port, io_qual.port);
if (hook == NULL) {
- PrintDebug("IN operation on unhooked IO port 0x%x\n", io_qual.port);
+ PrintDebug("IN operation on unhooked IO port 0x%x - returning zeros\n", io_qual.port);
+ core->vm_regs.rax >>= 8*read_size;
+ core->vm_regs.rax <<= 8*read_size;
- /* What are the HW semantics for an IN on an invalid port?
- * Do we need to clear the register value or leave it untouched???
- */
} else {
if (hook->read(core, io_qual.port, &(core->vm_regs.rax), read_size, hook->priv_data) != read_size) {
PrintError("Read failure for IN on port %x\n", io_qual.port);
addr_t guest_va = exit_info->guest_linear_addr;
addr_t host_addr = 0;
int rdi_change = 0;
- ulong_t rep_num = 1;
+ uint32_t rep_num = 1;
struct rflags * flags = (struct rflags *)&(core->ctrl_regs.rflags);
hook = v3_get_io_hook(core->vm_info, io_qual.port);
do {
if (hook == NULL) {
- PrintDebug("INS operation on unhooked IO port 0x%x\n", io_qual.port);
+ PrintDebug("INS operation on unhooked IO port 0x%x - returning zeros\n", io_qual.port);
- /* What are the HW semantics for an INS on an invalid port?
- * Do we need to clear the memory region or leave it untouched???
- */
+ memset((char*)host_addr,0,read_size);
+
} else {
if (hook->read(core, io_qual.port, (char *)host_addr, read_size, hook->priv_data) != read_size) {
PrintError("Read Failure for INS on port 0x%x\n", io_qual.port);
PrintDebug("OUT of %d bytes on port %d (0x%x)\n", write_size, io_qual.port, io_qual.port);
if (hook == NULL) {
- PrintDebug("OUT operation on unhooked IO port 0x%x\n", io_qual.port);
+ PrintDebug("OUT operation on unhooked IO port 0x%x - ignored\n", io_qual.port);
} else {
if (hook->write(core, io_qual.port, &(core->vm_regs.rax), write_size, hook->priv_data) != write_size) {
PrintError("Write failure for out on port %x\n",io_qual.port);
addr_t guest_va = exit_info->guest_linear_addr;
addr_t host_addr;
int rsi_change;
- ulong_t rep_num = 1;
+ uint32_t rep_num = 1;
struct rflags * flags = (struct rflags *)&(core->ctrl_regs.rflags);
hook = v3_get_io_hook(core->vm_info, io_qual.port);
do {
if (hook == NULL) {
- PrintDebug("OUTS operation on unhooked IO port 0x%x\n", io_qual.port);
+ PrintDebug("OUTS operation on unhooked IO port 0x%x - ignored\n", io_qual.port);
} else {
if (hook->write(core, io_qual.port, (char *)host_addr, write_size, hook->priv_data) != write_size) {
PrintError("Read failure for INS on port 0x%x\n", io_qual.port);