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monitor: Add port write command 

Useful for testing hardware emulations or manipulating its state to
stress guest drivers.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jan Kiszka 2009-07-14 10:20:11 +02:00 committed by Anthony Liguori
parent ef74679a81
commit f114784f69
2 changed files with 24 additions and 0 deletions
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19
monitor.c
View File

@ -1185,6 +1185,25 @@ static void do_ioport_read(Monitor *mon, int count, int format, int size,
suffix, addr, size * 2, val);
}
static void do_ioport_write(Monitor *mon, int count, int format, int size,
int addr, int val)
{
addr &= IOPORTS_MASK;
switch (size) {
default:
case 1:
cpu_outb(NULL, addr, val);
break;
case 2:
cpu_outw(NULL, addr, val);
break;
case 4:
cpu_outl(NULL, addr, val);
break;
}
}
static void do_boot_set(Monitor *mon, const char *bootdevice)
{
int res;

5
qemu-monitor.hx
View File

@ -306,6 +306,11 @@ STEXI
Read I/O port.
ETEXI
{ "o", "/ii", do_ioport_write,
"/fmt addr value", "I/O port write" },
STEXI
Write to I/O port.
ETEXI
{ "sendkey", "si?", do_sendkey,
"keys [hold_ms]", "send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)" },