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| author | aurel32 | 2008-10-12 18:15:04 +0200 |
|---|---|---|
| committer | aurel32 | 2008-10-12 18:15:04 +0200 |
| commit | bad5b1ec8e5d2b68be2c0fd33db2094942e6b685 (patch) | |
| tree | 02b7b8b596b9492f1b59872da2d41b445906bf6b /hw | |
| parent | Only use __builtin_* with GCC >= 3.4 (diff) | |
| download | qemu-bad5b1ec8e5d2b68be2c0fd33db2094942e6b685.tar.gz qemu-bad5b1ec8e5d2b68be2c0fd33db2094942e6b685.tar.xz qemu-bad5b1ec8e5d2b68be2c0fd33db2094942e6b685.zip | |
Define macro QEMU_GNUC_PREREQ and use it
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5467 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/apic.c | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -20,6 +20,7 @@ #include "hw.h" #include "pc.h" #include "qemu-timer.h" +#include "osdep.h" //#define DEBUG_APIC //#define DEBUG_IOAPIC @@ -107,7 +108,7 @@ static void apic_update_irq(APICState *s); /* Find first bit starting from msb */ static int fls_bit(uint32_t value) { -#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) +#if QEMU_GNUC_PREREQ(3, 4) return 31 - __builtin_clz(value); #else unsigned int ret = 0; @@ -127,7 +128,7 @@ static int fls_bit(uint32_t value) /* Find first bit starting from lsb */ static int ffs_bit(uint32_t value) { -#if defined(__GNUC__) && ((__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) +#if QEMU_GNUC_PREREQ(3, 4) return __builtin_ffs(value) - 1; #else unsigned int ret = 0; |