Added three helper functions apic_match_dest(),
apic_match_physical_dest(), and apic_match_logical_dest() which
can be used to determine if a logical or physical APIC ID match a
given LAPIC under a given dest_mode. This does not account for shorthand.
Signed-off-by: James Sullivan <sullivan.jame...@gmail.com>
---
hw/intc/apic.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/hw/intc/apic.c b/hw/intc/apic.c
index 47d2fb1..c49eb26 100644
--- a/hw/intc/apic.c
+++ b/hw/intc/apic.c
@@ -241,6 +241,32 @@ static struct APICCommonState *apic_lowest_prio(const
uint32_t
}\
}
+static bool apic_match_physical_dest(struct APICCommonState *apic, uint8_t
dest)
+{
+ return (dest == 0xff || apic->id == dest);
+}
+
+static bool apic_match_logical_dest(struct APICCommonState *apic, uint8_t dest)
+{
+ if (apic->dest_mode == 0xf) {
+ return (dest & apic->log_dest) > 0;
+ } else if (apic->dest_mode == 0) {
+ return ((dest & 0xf0) == (apic->log_dest & 0xf0)) &&
+ (dest & apic->log_dest & 0x0f) > 0;
+ }
+ return false;
+}
+
+static bool apic_match_dest(struct APICCommonState *apic, uint8_t dest_mode,
+ uint8_t dest)
+{
+ if (dest_mode == 0) {
+ return apic_match_physical_dest(apic, dest);
+ } else {
+ return apic_match_logical_dest(apic, dest);
+ }
+}
+
static void apic_bus_deliver(const uint32_t *deliver_bitmask,
uint8_t delivery_mode, uint8_t vector_num,
uint8_t trigger_mode)
--
2.3.4
