diff options
Diffstat (limited to 'guest/guest64.S')
| -rw-r--r-- | guest/guest64.S | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/guest/guest64.S b/guest/guest64.S index 1862749..6629273 100644 --- a/guest/guest64.S +++ b/guest/guest64.S @@ -7,6 +7,11 @@ mov rcx, [rip + msg_len] // Len of string. rep outsb // Write ds:rsi to output port rdx. + // Trigger `KVM_EXIT_IO:KVM_EXIT_IO_IN` by reading byte to memory from input port. + mov dx, 0x1000 // Input port. + lea di, [in_dest] // Destination address. + insb // Read byte from input port dx to ds:di. + // Trigger `KVM_EXIT_HLT`. hlt @@ -15,3 +20,6 @@ msg: .asciz "Hello from Long Mode!\n" msg_len: .byte .-msg + +in_dest: + .byte 0x00 |