diff options
| -rw-r--r-- | hw/apic.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/apic.c b/hw/apic.c index 626f72fd0e..a2915f8121 100644 --- a/hw/apic.c +++ b/hw/apic.c @@ -105,6 +105,12 @@ static void apic_init_ipi(APICState *s); static void apic_set_irq(APICState *s, int vector_num, int trigger_mode); static void apic_update_irq(APICState *s); +/* Find first bit starting from msb */ +static int fls_bit(uint32_t value) +{ + return 31 - clz32(value); +} + /* Find first bit starting from lsb */ static int ffs_bit(uint32_t value) { @@ -300,7 +306,7 @@ static int get_highest_priority_int(uint32_t *tab) int i; for(i = 7; i >= 0; i--) { if (tab[i] != 0) { - return i * 32 + fls(tab[i]); + return i * 32 + fls_bit(tab[i]); } } return -1; |