adapted examples with new exit reasons

1 files changed, 13 insertions, 2 deletions

diff --git a/guest/guest16.S b/guest/guest16.S
index 4851694..9877ea9 100644
--- a/guest/guest16.S
+++ b/guest/guest16.S
@@ -6,11 +6,19 @@
     mov dx, 0x1000          // Output port.
     lea si, [msg]           // Address of string.
     mov cx, [msg_len]       // Len of string.
-    rep outsb               // Write ds:si to output port dx.
+    rep outsb               // Write byte from ds:si to output port dx.
 
-    // Trigger `KVM_EXIT_MMIO` by writing to non mapped physical address.
+    // 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_MMIO (w)` by writing to non mapped physical address.
     mov byte ptr ds:[0x2000], 0xaa
 
+    // Trigger `KVM_EXIT_MMIO (r)` by reading from non mapped physical address.
+    mov al, byte ptr ds:[0x2000]
+
     // Trigger `KVM_EXIT_HLT`.
     hlt
 
@@ -19,3 +27,6 @@ msg:
     .asciz "Hello from Real Mode!\n"
 msg_len:
     .2byte .-msg
+
+in_dest:
+    .byte 0x00