#include "hw.h"
#include "pc.h"
#include "qemu-timer.h"
-#include "osdep.h"
+#include "host-utils.h"
//#define DEBUG_APIC
//#define DEBUG_IOAPIC
/* Find first bit starting from msb */
static int fls_bit(uint32_t value)
{
-#if QEMU_GNUC_PREREQ(3, 4)
- return 31 - __builtin_clz(value);
-#else
- unsigned int ret = 0;
-
- if (value > 0xffff)
- value >>= 16, ret = 16;
- if (value > 0xff)
- value >>= 8, ret += 8;
- if (value > 0xf)
- value >>= 4, ret += 4;
- if (value > 0x3)
- value >>= 2, ret += 2;
- return ret + (value >> 1);
-#endif
+ return 31 - clz32(value);
}
/* Find first bit starting from lsb */
static int ffs_bit(uint32_t value)
{
-#if QEMU_GNUC_PREREQ(3, 4)
- return __builtin_ffs(value) - 1;
-#else
- unsigned int ret = 0;
-
- if (!value)
- return 0;
- if (!(value & 0xffff))
- value >>= 16, ret = 16;
- if (!(value & 0xff))
- value >>= 8, ret += 8;
- if (!(value & 0xf))
- value >>= 4, ret += 4;
- if (!(value & 0x3))
- value >>= 2, ret += 2;
- if (!(value & 0x1))
- ret++;
- return ret;
-#endif
+ return ctz32(value);
}
static inline void set_bit(uint32_t *tab, int index)